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First cut at x86 build environment

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3336 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-03-04 22:25:03 +00:00
parent 8a8e7670ba
commit 167040b9e1
46 changed files with 4319 additions and 86 deletions
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121
arch/README.txt
View file

@ -50,20 +50,20 @@ subdirectory). Each architecture must provide a subdirectory <arch-name>
under arch/ with the following characteristics:
<arch-name>/
|-- include/
| |--<chip-name>/
| | `-- (chip-specific header files)
| |--<other-chips>/
| |-- arch.h
| |-- irq.h
| `-- types.h
`-- src/
|--<chip-name>/
| `-- (chip-specific source files)
|--<other-chips>/
|-- Makefile
`-- (architecture-specific source files)
<arch-name>/
|-- include/
| |--<chip-name>/
| | `-- (chip-specific header files)
| |--<other-chips>/
| |-- arch.h
| |-- irq.h
| `-- types.h
`-- src/
|--<chip-name>/
| `-- (chip-specific source files)
|--<other-chips>/
|-- Makefile
`-- (architecture-specific source files)
Summary of Files
^^^^^^^^^^^^^^^^
@ -158,10 +158,10 @@ arch/arm - ARM-based micro-controllers
complete, verified, and included in the NuttX release 0.2.1.
arch/arm/include/imx and arch/arm/src/imx
Freescale MC9328MX1 or i.MX1. This port uses the Freescale MX1ADS
development board with a GNU arm-elf toolchain* under either Linux or Cygwin.
STATUS: This port has stalled because of development tool issues. Coding
is complete on the basic port (timer, serial console, SPI).
Freescale MC9328MX1 or i.MX1. This port uses the Freescale MX1ADS
development board with a GNU arm-elf toolchain* under either Linux or Cygwin.
STATUS: This port has stalled because of development tool issues. Coding
is complete on the basic port (timer, serial console, SPI).
arch/arm/include/lm3s and arch/arm/src/lm3s
These directories contain support for the Luminary LMS family, particularly
@ -178,43 +178,43 @@ arch/arm - ARM-based micro-controllers
support. A verifed NuttShell (NSH) configuration is also available.
arch/arm/include/lpc2378 and arch/arm/src/lpc2378.
NXP LPC2378. Support is provided for the NXP LPC2378 MCU. This port was
contributed by Rommel Marcelo is was first released in NuttX-5.3.
STATUS: This port boots and passes the OS test (examples/ostest) and
includes a working implementation of the NuttShell (NSH). The port is
complete and verified. As of NuttX 5.3, the port includes only basic
timer interrupts and serial console support.
NXP LPC2378. Support is provided for the NXP LPC2378 MCU. This port was
contributed by Rommel Marcelo is was first released in NuttX-5.3.
STATUS: This port boots and passes the OS test (examples/ostest) and
includes a working implementation of the NuttShell (NSH). The port is
complete and verified. As of NuttX 5.3, the port includes only basic
timer interrupts and serial console support.
arch/arm/include/lpc313x and arch/arm/src/lpc313x
These directories provide support for NXP LPC313x family of
ARM926EJ-S processors. The port for the NXP LPC3131 was first
released in NuttX-5.1 (but was not functional until NuttX-5.2).
STATUS: The basic EA3131 port is complete and verified in NuttX-5.2
This basic port includes basic boot-up, serial console, and timer
interrupts. This port was extended in NuttX 5.3 with a USB high
speed driver contributed by David Hewson. This port has been
verified using the NuttX OS test, USB serial and mass storage tests
and includes a working implementation of the NuttShell ((NSH)).
released in NuttX-5.1 (but was not functional until NuttX-5.2).
STATUS: The basic EA3131 port is complete and verified in NuttX-5.2
This basic port includes basic boot-up, serial console, and timer
interrupts. This port was extended in NuttX 5.3 with a USB high
speed driver contributed by David Hewson. This port has been
verified using the NuttX OS test, USB serial and mass storage tests
and includes a working implementation of the NuttShell ((NSH)).
arch/arm/include/sam3u and arch/arm/src/sam3u
Atmel AT91SAM3U. This port is for Atmel AT91SAM3U4E MCU.
STATUS: The basic AT91SAM3U port was released in NuttX version 5.1.
The basic port includes boot-up logic, interrupt driven serial
console, and system timer interrupts. That release passes the
NuttX OS test and is proven to have a valid OS implementation. A
onfiguration to support the NuttShell is also included.
Atmel AT91SAM3U. This port is for Atmel AT91SAM3U4E MCU.
STATUS: The basic AT91SAM3U port was released in NuttX version 5.1.
The basic port includes boot-up logic, interrupt driven serial
console, and system timer interrupts. That release passes the
NuttX OS test and is proven to have a valid OS implementation. A
onfiguration to support the NuttShell is also included.
arch/arm/include/stm32 and arch/arm/src/stm32
These directories contain support for the STMicro STM32 family, particularly
for the STM32F103ZET6.
STATUS: The basic STM32 port was released in NuttX version 0.4.12.
The basic port includes boot-up logic, interrupt driven serial console,
and system timer interrupts. The 0.4.13 release added support for SPI,
serial FLASH, and USB device.; The 4.14 release added support for
buttons and SDIO-based MMC/SD and verifed DMA support. Verified
configurations are available for NuttX OS test, the NuttShell (NSH)
example, the USB serial device class, and the USB mass storage device
lass example.
These directories contain support for the STMicro STM32 family, particularly
for the STM32F103ZET6.
STATUS: The basic STM32 port was released in NuttX version 0.4.12.
The basic port includes boot-up logic, interrupt driven serial console,
and system timer interrupts. The 0.4.13 release added support for SPI,
serial FLASH, and USB device.; The 4.14 release added support for
buttons and SDIO-based MMC/SD and verifed DMA support. Verified
configurations are available for NuttX OS test, the NuttShell (NSH)
example, the USB serial device class, and the USB mass storage device
lass example.
arch/arm/include/str71x and arch/arm/src/str71x
These directories provide support for the STMicro STR71x processors.
@ -236,14 +236,15 @@ arch/avr
arch/hc
This directory is dedicated to ports to the Freescale HC family.
arch/arm/include/hcs12 and arch/arm/src/hcs12
These directories provide support for the Freescale m68hcs12 family.
STATUS: Fragments of this port were released in nuttx-5.0, but porting effort
has been stalled because of higher priority tasks.
arch/arm/include/m9s12 and arch/arm/src/m9s12
These directories provide support for the Freescale mc9s12x family.
STATUS: Fragments of this port were first released in nuttx-5.0 and
the port was "code-complete" as nuttx-5.18. However, the final
verification effort has been stalled because of higher priority tasks.
arch/m68322
A work in progress.
STATUS: Stalled for the moment.
STATUS: Stalled for the time being.
arch/sh - SuperH and related Hitachi/Renesas microcontrollers
@ -256,6 +257,22 @@ arch/sh - SuperH and related Hitachi/Renesas microcontrollers
arch/8051 - 8051/52 microcontrollers
8051 Microcontroller. This port is not quite ready for prime time.
arch/x86 - Intel x86 architectures
This directory holds related, 32- and 64-bit architectures from Intel.
At present, this includes the following subdirectories:
arch/x86/include and arch/x86/src/common
Common x86 logic.
arch/x86/include/i486 and arch/x86/src/i486
These directories hold definitions and logic appropriate for any
instantiation of the 32-bit i486 architecture.
arch/x86/include/qemu and arch/x86/src/qemu
This is the implementation of NuttX on the QEMU x86 simulation.
STATUS: This is a work in progress and not yet ready for prime time.
arch/z16 - ZiLOG 16-bit processors
This directory holds related, 16-bit architectures from ZiLOG. At
present, this includes the following subdirectories:

4
arch/arm/include/irq.h
View file

@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/include/irq.h
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -52,7 +52,7 @@
#include <arch/chip/irq.h>
/* Include ARM architectgure-specific IRQ definitions (including register
/* Include ARM architecture-specific IRQ definitions (including register
* save structure and irqsave()/irqrestore() macros
*/

9
arch/arm/include/serial.h
View file

@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/include/serial.h
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -41,17 +41,12 @@
****************************************************************************/
#include <sys/types.h>
#include <nuttx/ioctl.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* IOCTL commands supported by the ARM serial driver */
#define TIOCSBRK 0x5401 /* BSD compatibility */
#define TIOCCBRK 0x5402 /* " " " " */
#define TIOCSERGSTRUCT 0x5403 /* Get up_dev_t for port */
/****************************************************************************
* Public Data
****************************************************************************/

8
arch/arm/include/watchdog.h
View file

@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/include/watchdog.h
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -40,14 +40,12 @@
* Included Files
****************************************************************************/
#include <nuttx/ioctl.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* IOCTL commands supported by the C5471 watchdog driver */
#define WDIOC_KEEPALIVE 0x5701 /* Restart the watchdog timer */
/****************************************************************************
* Private Data
****************************************************************************/

16
arch/arm/src/common/up_createstack.c
View file

@ -109,18 +109,18 @@ int up_create_stack(_TCB *tcb, size_t stack_size)
size_t size_of_stack;
/* The ARM uses a push-down stack: the stack grows
* toward loweraddresses in memory. The stack pointer
* register, points to the lowest, valid work address
* (the "top" of the stack). Items on the stack are
* referenced as positive word offsets from sp.
*/
* toward loweraddresses in memory. The stack pointer
* register, points to the lowest, valid work address
* (the "top" of the stack). Items on the stack are
* referenced as positive word offsets from sp.
*/
top_of_stack = (uint32_t)tcb->stack_alloc_ptr + stack_size - 4;
/* The ARM stack must be aligned at word (4 byte)
* boundaries. If necessary top_of_stack must be rounded
* down to the next boundary
*/
* boundaries. If necessary top_of_stack must be rounded
* down to the next boundary
*/
top_of_stack &= ~3;
size_of_stack = top_of_stack - (uint32_t)tcb->stack_alloc_ptr + 4;

4
arch/sh/include/serial.h
View file

@ -1,7 +1,7 @@
/****************************************************************************
* arch/sh/include/serial.h
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2008, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -40,6 +40,8 @@
* Included Files
****************************************************************************/
#include <nuttx/ioctl.h>
/****************************************************************************
* Definitions
****************************************************************************/

31
arch/x86/include/README.txt Executable file
View file

@ -0,0 +1,31 @@
arch/x86/include/README.txt
^^^^^^^^^^^^^^^^^^^^^^^^^^^
This directory holds x86-specific header files. The top-level header files in
arch/x86/include simply include corresponding header files from lower lower-
level chip-specific and architecture-specific directories.
Architecture-Specific Directories
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Architecture-specific directories hold common header files for specific x86
architectures. Separating these header file makes it easy to manage such
things as differences in sizeof(long) on 32- and 64-bit x86 architectures.
i486
This directory holds definitions appropriate for any instantiation of the
32-bit i486 architecture.
Chip-Specific directories
^^^^^^^^^^^^^^^^^^^^^^^^^
The same x86 architecture may be realized in different chip implementations.
For SoC chips, in particular, on-chip devices and differing interrupt
structures may require special, chip-specific definitions in these chip-
specific directories.
qemu
This is the implementation of NuttX on the QEMU x86 simulation.

91
arch/x86/include/arch.h Executable file
View file

@ -0,0 +1,91 @@
/****************************************************************************
* arch/x86/include/arch.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather, only indirectly
* through arch/arch.h
*/
#ifndef __ARCH_X86_INCLUDE_ARCH_H
#define __ARCH_X86_INCLUDE_ARCH_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/* Include chip-specific definitions */
# include <arch/chip/arch.h>
/* Include architecture-specific definitions */
#ifdef CONFIG_ARCH_I486
# include <arch/i486/arch.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_X86_INCLUDE_ARCH_H */

108
arch/x86/include/i486/arch.h Executable file
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@ -0,0 +1,108 @@
/****************************************************************************
* arch/x86/include/i486/arch.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/arch.h
*/
#ifndef __ARCH_X86_INCLUDE_I486_ARCH_H
#define __ARCH_X86_INCLUDE_I486_ARCH_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Definitions
****************************************************************************/
/* FLAGS bits */
#define X86_FLAGS_CF (1 << 0) /* Bit 0: Carry Flag */
/* Bit 1: Reserved */
#define X86_FLAGS_PF (1 << 2) /* Bit 2: Parity Flag */
/* Bit 3: Reserved */
#define X86_FLAGS_AF (1 << 4) /* Bit 4: Auxillary carry Flag */
/* Bit 5: Reserved */
#define X86_FLAGS_ZF (1 << 6) /* Bit 6: Zero Flag */
#define X86_FLAGS_SF (1 << 7) /* Bit 7: Sign Flag */
#define X86_FLAGS_TF (1 << 8) /* Bit 8: Trap Flag */
#define X86_FLAGS_IF (1 << 9) /* Bit 9: Interrupt Flag */
#define X86_FLAGS_DF (1 << 10) /* Bit 10: Direction Flag */
#define X86_FLAGS_OF (1 << 11) /* Bit 11: Overflow Flag */
#define X86_FLAGS_IOPL_SHIFT (12) /* Bits 12-13: IOPL mask (286+ only)*/
#define X86_FLAGS_IOPL_MASK (3 << X86_FLAGS_IOPL_SHIFT)
#define X86_FLAGS_NT (1 << 14) /* Bit 14: Nested Task */
/* Bit 15: Reserved */
/* EFLAGS bits (Extend the basic FLAGS bit definitions) */
#define X86_EFLAGS_RF (1 << 16) /* Bit 16: Resume Flag (386+ only) */
#define X86_EFLAGS_VM (1 << 17) /* Bit 17: Virtual Mode (386+ only) */
#define X86_EFLAGS_AC (1 << 18) /* Bit 18: Alignment Check (486SX+ only) */
#define X86_EFLAGS_VIF (1 << 19) /* Bit 19: Virtual Interrupt Flag (Pentium+) */
#define X86_EFLAGS_VIP (1 << 20) /* Bit 20: Virtual Interrupt Pending (Pentium+) */
#define X86_EFLAGS_ID (1 << 21) /* Bit 21: CPUID detection flag (Pentium+) */
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_X86_INCLUDE_I486_ARCH_H */

153
arch/x86/include/i486/io.h Normal file
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@ -0,0 +1,153 @@
/****************************************************************************
* arch/x86/include/i486/io.h
* arch/chip/io.h
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather, only indirectly
* through arch/io.h
*/
#ifndef __ARCH_X86_INCLUDE_I486_IO_H
#define __ARCH_X86_INCLUDE_I486_IO_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdint.h>
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Inline functions
****************************************************************************/
/* Standard x86 Port I/O */
static inline void outb(uint8_t regval, uint16_t port)
{
asm volatile(
"\toutb %0,%1\n"
:
: "a" (regval), "dN" (port)
);
}
static inline uint8_t inb(uint16_t port)
{
uint8_t regval;
asm volatile(
"\tinb %1,%0\n"
: "=a" (regval)
: "dN" (port)
);
return regval;
}
static inline void outw(uint16_t regval, uint16_t port)
{
asm volatile(
"\toutw %0,%1\n"
:
: "a" (regval), "dN" (port)
);
}
static inline uint16_t inw(uint16_t port)
{
uint16_t regval;
asm volatile(
"\tinw %1,%0\n"
: "=a" (regval)
: "dN" (port)
);
return regval;
}
static inline void outl(uint32_t regval, uint16_t port)
{
asm volatile(
"\toutl %0,%1\n"
:
: "a" (regval), "dN" (port)
);
}
static inline uint32_t inl(uint32_t port)
{
uint32_t regval;
asm volatile(
"\tinl %1,%0\n"
: "=a" (regval)
: "dN" (port)
);
return regval;
}
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN void outp(char p, char c);
EXTERN char inp(char p);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_X86_INCLUDE_I486_IO_H */

178
arch/x86/include/i486/irq.h Executable file
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@ -0,0 +1,178 @@
/****************************************************************************
* arch/x86/include/i486/irq.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather, only indirectly
* through nuttx/irq.h
*/
#ifndef __ARCH_X86_INCLUDE_I486_IRQ_H
#define __ARCH_X86_INCLUDE_I486_IRQ_H
/****************************************************************************
* Included Files
****************************************************************************/
#ifdef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
# include <arch/arch.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
#ifdef __ASSEMBLY__
# define REG_EBX (0*4)
# define REG_ESI (1*4)
# define REG_EDI (2*4)
# define REG_EBP (3*4)
# define REG_SP (4*4)
# define REG_PC (5*4)
#else
# define REG_EBX (0)
# define REG_ESI (1)
# define REG_EDI (2)
# define REG_EBP (3)
# define REG_SP (4)
# define REG_PC (5)
#endif /* __ASSEMBLY__ */
#define XCPTCONTEXT_REGS (6)
#define XCPTCONTEXT_SIZE (6 * XCPTCONTEXT_REGS)
/****************************************************************************
* Public Types
****************************************************************************/
/* This struct defines the way the registers are stored */
#ifndef __ASSEMBLY__
struct xcptcontext
{
void *sigdeliver; /* Actual type is sig_deliver_t */
/* Storage order: %ebx, $esi, %edi, %ebp, sp, and return PC */
uint32_t regs[XCPTCONTEXT_REGS];
};
#endif
/****************************************************************************
* Inline functions
****************************************************************************/
#ifndef __ASSEMBLY__
/* Get the current FLAGS register contents */
static inline irqstate_t irqflags()
{
irqstate_t flags;
asm volatile(
"\tpushf\n"
"\tpop %0\n"
: "=rm" (flags)
:
: "memory");
return flags;
}
/* Get a sample of the FLAGS register, determine if interrupts are disabled */
static inline bool irqdisabled(irqstate_t flags)
{
return ((flags & X86_FLAGS_IF) == 0);
}
/* Disable interrupts unconditionally */
static inline void irqdisable(void)
{
asm volatile("cli": : :"memory");
}
/* Enable interrupts unconditionally */
static inline void irqenable(void)
{
asm volatile("sti": : :"memory");
}
/* Disable interrupts, but return previous interrupt state */
static inline irqstate_t irqsave(void)
{
irqstate_t flags = irqflags();
irqdisable();
return flags;
}
/* Conditionally disable interrupts */
static inline void irqrestore(irqstate_t flags)
{
if (irqdisabled(flags))
{
irqdisable();
}
}
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_X86_INCLUDE_I486_IRQ_H */

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/****************************************************************************
* arch/x86/include/i486/limits.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __ARCH_X86_INCLUDE_I486_LIMITS_H
#define __ARCH_X86_INCLUDE_I486_LIMITS_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Definitions
****************************************************************************/
#define CHAR_BIT 8
#define SCHAR_MIN 0x80
#define SCHAR_MAX 0x7f
#define UCHAR_MAX 0xff
/* These could be different on machines where char is unsigned */
#define CHAR_MIN SCHAR_MIN
#define CHAR_MAX SCHAR_MAX
#define SHRT_MIN 0x8000
#define SHRT_MAX 0x7fff
#define USHRT_MAX 0xffff
#define INT_MIN 0x80000000
#define INT_MAX 0x7fffffff
#define UINT_MAX 0xffffffff
/* These change on 32-bit and 64-bit platforms */
#define LONG_MAX 0x80000000
#define LONG_MIN 0x7fffffff
#define ULONG_MAX 0xffffffff
#define LLONG_MAX 0x8000000000000000
#define LLONG_MIN 0x7fffffffffffffff
#define ULLONG_MAX 0xffffffffffffffff
/* A pointer is 4 bytes */
#define PTR_MIN 0x80000000
#define PTR_MAX 0x7fffffff
#define UPTR_MAX 0xffffffff
#endif /* __ARCH_X86_INCLUDE_I486_LIMITS_H */

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/************************************************************************
* arch/x86/include/i486/types.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************/
/* This file should never be included directed but, rather, only
* indirectly through arch/types.h (which is, in turn only accessed
* through sys/types.h or stdint.h).
*/
#ifndef __ARCH_X86_INCLUDE_I486_TYPES_H
#define __ARCH_X86_INCLUDE_I486_TYPES_H
/************************************************************************
* Included Files
************************************************************************/
/************************************************************************
* Definitions
************************************************************************/
/************************************************************************
* Type Declarations
************************************************************************/
#ifndef __ASSEMBLY__
/* These are the sizes of the standard integer types. NOTE that these type
* names have a leading underscore character. This file will be included
* (indirectly) by include/stdint.h and typedef'ed to the final name without
* the underscore character. This roundabout way of doings things allows
* the stdint.h to be removed from the include/ directory in the event that
* the user prefers to use the definitions provided by their toolchain header
* files
*/
typedef char _int8_t;
typedef unsigned char _uint8_t;
typedef short _int16_t;
typedef unsigned short _uint16_t;
typedef int _int32_t;
typedef unsigned int _uint32_t;
typedef long long _int64_t;
typedef unsigned long long _uint64_t;
#define __INT64_DEFINED
/* A pointer is 4 bytes */
typedef unsigned int _intptr_t;
typedef unsigned int _uintptr_t;
/* This is the size of the interrupt state save returned by
* irqsave()
*/
typedef unsigned int irqstate_t;
#endif /* __ASSEMBLY__ */
/************************************************************************
* Global Function Prototypes
************************************************************************/
#endif /* __ARCH_X86_INCLUDE_I486_TYPES_H */

86
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/****************************************************************************
* arch/x86/include/io.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __ARCH_X86_INCLUDE_IO_H
#define __ARCH_X86_INCLUDE_IO_H
/****************************************************************************
* Included Files
****************************************************************************/
/* Include architecture-specific IO definitions (These are probably common
* across all architectures, but this gives a little bit of flexibility).
*/
#ifdef CONFIG_ARCH_I486
# include <arch/i486/io.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_X86_INCLUDE_IO_H */

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/****************************************************************************
* arch/x86/include/irq.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather, only indirectly
* through nuttx/irq.h
*/
#ifndef __ARCH_X86_INCLUDE_IRQ_H
#define __ARCH_X86_INCLUDE_IRQ_H
/****************************************************************************
* Included Files
****************************************************************************/
/* Include NuttX-specific IRQ definitions */
#include <nuttx/irq.h>
/* Include chip-specific IRQ definitions (including IRQ numbers) */
#include <arch/chip/irq.h>
/* Include architecture-specific IRQ definitions (including register save
* structure and irqsave()/irqrestore() macros).
*/
#ifdef CONFIG_ARCH_I486
# include <arch/i486/irq.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_X86_INCLUDE_IRQ_H */

53
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/****************************************************************************
* arch/x86/include/limits.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __ARCH_X86_INCLUDE_LIMITS_H
#define __ARCH_X86_INCLUDE_LIMITS_H
/****************************************************************************
* Included Files
****************************************************************************/
/* Include architecture-specific limits */
#ifdef CONFIG_ARCH_I486
# include <arch/i486/limits.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
#endif /* __ARCH_X86_INCLUDE_LIMITS_H */

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/****************************************************************************
* arch/x86/include/qemu/arch.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/arch.h
*/
#ifndef __ARCH_X86_INCLUDE_QEMU_ARCH_H
#define __ARCH_X86_INCLUDE_QEMU_ARCH_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_X86_INCLUDE_QEMU_ARCH_H */

82
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/****************************************************************************
* arch/x86/include/qemu/irq.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather,
* only indirectly through nuttx/irq.h
*/
#ifndef __ARCH_X86_INCLUDE_QEMU_IRQ_H
#define __ARCH_X86_INCLUDE_QEMU_IRQ_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Definitions
****************************************************************************/
#define NR_IRQS 0
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Inline functions
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_X86_INCLUDE_QEMU_IRQ_H */

65
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/****************************************************************************
* arch/x86/include/types.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* This file should never be included directed but, rather, only indirectly
* through sys/types.h
*/
#ifndef __ARCH_X86_INCLUDE_TYPES_H
#define __ARCH_X86_INCLUDE_TYPES_H
/****************************************************************************
* Included Files
****************************************************************************/
/* Include architecture-specific limits */
#ifdef CONFIG_ARCH_I486
# include <arch/i486/types.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Type Declarations
****************************************************************************/
/****************************************************************************
* Global Function Prototypes
****************************************************************************/
#endif /* __ARCH_X86_INCLUDE_TYPES_H */

143
arch/x86/src/Makefile Normal file
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############################################################################
# arch/x86/src/Makefile
#
# Copyright (C) 2010 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
-include $(TOPDIR)/Make.defs
-include chip/Make.defs
ARCH_SRCDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src
ifeq ($(CONFIG_ARCH_I486),y)
ARCH_SUBDIR = i486
endif
ifeq ($(WINTOOL),y)
NUTTX = "${shell cygpath -w $(TOPDIR)/nuttx}"
CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
-I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
-I "${shell cygpath -w $(ARCH_SRCDIR)/$(ARCH_SUBDIR)}" \
-I "${shell cygpath -w $(TOPDIR)/sched}"
else
NUTTX = $(TOPDIR)/nuttx
CFLAGS += -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common \
-I$(ARCH_SRCDIR)/$(ARCH_SUBDIR) -I$(TOPDIR)/sched
endif
HEAD_AOBJ = $(HEAD_ASRC:.S=$(OBJEXT))
ASRCS = $(CHIP_ASRCS) $(CMN_ASRCS)
AOBJS = $(ASRCS:.S=$(OBJEXT))
CSRCS = $(CHIP_CSRCS) $(CMN_CSRCS)
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)
OBJS = $(AOBJS) $(COBJS)
LDFLAGS = $(ARCHSCRIPT)
EXTRA_LIBS =
LINKLIBS =
ifeq ($(WINTOOL),y)
LIBPATHS = ${shell for path in $(LINKLIBS); do dir=`dirname $(TOPDIR)/$$path`;echo "-L\"`cygpath -w $$dir`\"";done}
LIBPATHS += -L"${shell cygpath -w $(BOARDDIR)}"
else
LIBPATHS = $(addprefix -L$(TOPDIR)/,$(dir $(LINKLIBS)))
LIBPATHS += -L"$(BOARDDIR)"
endif
LDLIBS = $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))
BOARDDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board
LIBGCC = "${shell $(CC) -print-libgcc-file-name}"
VPATH = chip:common:$(ARCH_SUBDIR)
all: $(HEAD_OBJ) libarch$(LIBEXT)
$(AOBJS) $(HEAD_AOBJ): %$(OBJEXT): %.S
$(call ASSEMBLE, $<, $@)
$(COBJS): %$(OBJEXT): %.c
$(call COMPILE, $<, $@)
libarch$(LIBEXT): $(OBJS)
@( for obj in $(OBJS) ; do \
$(call ARCHIVE, $@, $${obj}); \
done ; )
board/libboard$(LIBEXT):
@$(MAKE) -C board TOPDIR="$(TOPDIR)" libboard$(LIBEXT)
nuttx: $(HEAD_AOBJ) board/libboard$(LIBEXT)
@echo "LD: nuttx"
@$(LD) --entry=__start $(LDFLAGS) $(LIBPATHS) -o $(NUTTX)$(EXEEXT) $(HEAD_AOBJ) $(EXTRA_OBJS) \
--start-group $(LDLIBS) -lboard --end-group $(EXTRA_LIBS) $(LIBGCC)
ifeq ($(CONFIG_BOOT_RUNFROMFLASH),y)
@export flashloc=`$(OBJDUMP) --all-headers $(NUTTX)$(EXEEXT) | grep _eronly | cut -d' ' -f1`; \
$(OBJCOPY) $(OBJCOPYARGS) --adjust-section-vma=.data=0x$$flashloc $(NUTTX)$(EXEEXT) $(NUTTX).flashimage
@mv $(NUTTX).flashimage $(NUTTX)$(EXEEXT)
endif
@$(NM) $(NUTTX)$(EXEEXT) | \
grep -v '\(compiled\)\|\(\$(OBJEXT)$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
sort > $(TOPDIR)/System.map
@export vflashstart=`$(OBJDUMP) --all-headers $(NUTTX)$(EXEEXT) | grep _vflashstart | cut -d' ' -f1`; \
if [ ! -z "$$vflashstart" ]; then \
$(OBJCOPY) $(OBJCOPYARGS) --adjust-section-vma=.vector=0x$$vflashstart $(NUTTX)$(EXEEXT) $(NUTTX).flashimage; \
mv $(NUTTX).flashimage $(NUTTX)$(EXEEXT); \
fi
.depend: Makefile chip/Make.defs $(SRCS)
@if [ -e board/Makefile ]; then \
$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
fi
@$(MKDEP) --dep-path chip --dep-path common --dep-path $(ARCH_SUBDIR) \
$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
@touch $@
depend: .depend
clean:
@if [ -e board/Makefile ]; then \
$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
fi
@rm -f libarch$(LIBEXT) *~ .*.swp
$(call CLEAN)
distclean: clean
@if [ -e board/Makefile ]; then \
$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
fi
@rm -f Make.dep .depend
-include Make.dep

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arch/x86/src/README.txt Executable file
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arch/x86/src/README.txt
^^^^^^^^^^^^^^^^^^^^^^^
This directory holds x86-specific source files. All x86 source reside in
lower-level common, chip-specific, and architecture-specific directories.
common/ Directory
^^^^^^^^^^^^^^^^^
This directory holds source files common to all x86 architectures.
Architecture-Specific Directories
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Architecture-specific directories hold common source files shared for by
implementations of specific x86 architectures.
i486
This directory holds logic appropriate for any instantiation of the 32-bit
i486 architecture.
Chip-Specific directories
^^^^^^^^^^^^^^^^^^^^^^^^^
The same x86 architecture may be realized in different chip implementations.
For SoC chips, in particular, on-chip devices and differing interrupt
structures may require special, chip-specific definitions in these chip-
specific directories.
qemu
This is the implementation of NuttX on the QEMU x86 simulation.

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/****************************************************************************
* arch/x86/src/common/up_allocateheap.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_allocate_heap
*
* Description:
* The heap may be statically allocated by defining CONFIG_HEAP_BASE and
* CONFIG_HEAP_SIZE. If these are not defined, then this function will be
* called to dynamically set aside the heap region.
*
****************************************************************************/
void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
{
up_ledon(LED_HEAPALLOCATE);
*heap_start = (FAR void*)g_heapbase;
*heap_size = CONFIG_DRAM_END - g_heapbase;
}

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/****************************************************************************
* arch/x86/src/common/up_arch.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef ___ARCH_X86_SRC_COMMON_UP_ARCH_H
#define ___ARCH_X86_SRC_COMMON_UP_ARCH_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
#include <arch/io.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Inline Functions
****************************************************************************/
#ifndef __ASSEMBLY__
# define getreg8(p) inb(p)
# define putreg8(v,p) outb(v,p)
# define getreg16(p) inw(p)
# define putreg16(v,p) outw(v,p)
# define getreg32(p) inl(p)
# define putreg32(v,p) outl(v,p)
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/* Atomic modification of registers */
EXTERN void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits);
EXTERN void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits);
EXTERN void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* ___ARCH_X86_SRC_COMMON_UP_ARCH_H */

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/****************************************************************************
* common/up_exit.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
#ifdef CONFIG_DUMP_ON_EXIT
#include <nuttx/fs.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: _up_dumponexit
*
* Description:
* Dump the state of all tasks whenever on task exits. This is debug
* instrumentation that was added to check file-related reference counting
* but could be useful again sometime in the future.
*
****************************************************************************/
#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
static void _up_dumponexit(FAR _TCB *tcb, FAR void *arg)
{
#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NFILE_STREAMS > 0
int i;
#endif
sdbg(" TCB=%p name=%s pid=%d\n", tcb, tcb->argv[0], tcb->pid);
sdbg(" priority=%d state=%d\n", tcb->sched_priority, tcb->task_state);
#if CONFIG_NFILE_DESCRIPTORS > 0
if (tcb->filelist)
{
sdbg(" filelist refcount=%d\n",
tcb->filelist->fl_crefs);
for (i = 0; i < CONFIG_NFILE_DESCRIPTORS; i++)
{
struct inode *inode = tcb->filelist->fl_files[i].f_inode;
if (inode)
{
sdbg(" fd=%d refcount=%d\n",
i, inode->i_crefs);
}
}
}
#endif
#if CONFIG_NFILE_STREAMS > 0
if (tcb->streams)
{
sdbg(" streamlist refcount=%d\n",
tcb->streams->sl_crefs);
for (i = 0; i < CONFIG_NFILE_STREAMS; i++)
{
struct file_struct *filep = &tcb->streams->sl_streams[i];
if (filep->fs_filedes >= 0)
{
#if CONFIG_STDIO_BUFFER_SIZE > 0
sdbg(" fd=%d nbytes=%d\n",
filep->fs_filedes,
filep->fs_bufpos - filep->fs_bufstart);
#else
sdbg(" fd=%d\n", filep->fs_filedes);
#endif
}
}
}
#endif
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: _exit
*
* Description:
* This function causes the currently executing task to cease to exist.
* This is a special case of task_delete() where the task to be deleted is
* the currently executing task. It is more complex because a context
* switch must be perform to the next ready to run task.
*
****************************************************************************/
void _exit(int status)
{
_TCB* tcb;
/* Disable interrupts. They will be restored when the next
* task is started.
*/
(void)irqsave();
slldbg("TCB=%p exitting\n", g_readytorun.head);
#if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG)
slldbg("Other tasks:\n");
sched_foreach(_up_dumponexit, NULL);
#endif
/* Destroy the task at the head of the ready to run list. */
(void)task_deletecurrent();
/* Now, perform the context switch to the new ready-to-run task at the
* head of the list.
*/
tcb = (_TCB*)g_readytorun.head;
/* Then switch contexts */
up_fullcontextrestore(tcb->xcp.regs);
}

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/****************************************************************************
* arch/x86/src/common/up_initialize.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/fs.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_calibratedelay
*
* Description:
* Delay loops are provided for short timing loops. This function, if
* enabled, will just wait for 100 seconds. Using a stopwatch, you can
* can then determine if the timing loops are properly calibrated.
*
****************************************************************************/
#if defined(CONFIG_ARCH_CALIBRATION) && defined(CONFIG_DEBUG)
static void up_calibratedelay(void)
{
int i;
lldbg("Beginning 100s delay\n");
for (i = 0; i < 100; i++)
{
up_mdelay(1000);
}
lldbg("End 100s delay\n");
}
#else
# define up_calibratedelay()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_initialize
*
* Description:
* up_initialize will be called once during OS initialization after the
* basic OS services have been initialized. The architecture specific
* details of initializing the OS will be handled here. Such things as
* setting up interrupt service routines, starting the clock, and
* registering device drivers are some of the things that are different
* for each processor and hardware platform.
*
* up_initialize is called after the OS initialized but before the user
* initialization logic has been started and before the libraries have
* been initialized. OS services and driver services are available.
*
****************************************************************************/
void up_initialize(void)
{
/* Initialize global variables */
current_regs = NULL;
/* Calibrate the timing loop */
up_calibratedelay();
/* Add any extra memory fragments to the memory manager */
up_addregion();
/* Initialize the interrupt subsystem */
up_irqinitialize();
/* Initialize the DMA subsystem if the weak function stm32_dmainitialize has been
* brought into the build
*/
#ifdef CONFIG_ARCH_DMA
#ifdef CONFIG_HAVE_WEAKFUNCTIONS
if (up_dmainitialize)
#endif
{
up_dmainitialize();
}
#endif
/* Initialize the system timer interrupt */
#if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
up_timerinit();
#endif
/* Register devices */
#if CONFIG_NFILE_DESCRIPTORS > 0
devnull_register(); /* Standard /dev/null */
#endif
/* Initialize the serial device driver */
#ifdef CONFIG_USE_SERIALDRIVER
up_serialinit();
#elif defined(CONFIG_DEV_LOWCONSOLE)
lowconsole_init();
#endif
/* Initialize the netwok */
up_netinitialize();
/* Initialize USB -- device and/or host */
up_usbinitialize();
up_ledon(LED_IRQSENABLED);
}

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/****************************************************************************
* arch/x86/src/common/up_internal.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __ARCH_X86_SRC_COMMON_UP_INTERNAL_H
#define __ARCH_X86_SRC_COMMON_UP_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Bring-up debug configurations. These are here (vs defconfig) because
* these should only be controlled during low level board bring-up and not
* part of normal platform configuration.
*/
#undef CONFIG_SUPPRESS_INTERRUPTS /* DEFINED: Do not enable interrupts */
#undef CONFIG_SUPPRESS_TIMER_INTS /* DEFINED: No timer */
#undef CONFIG_SUPPRESS_SERIAL_INTS /* DEFINED: Console will poll */
#undef CONFIG_SUPPRESS_UART_CONFIG /* DEFINED: Do not reconfig UART */
#undef CONFIG_DUMP_ON_EXIT /* DEFINED: Dump task state on exit */
/* Determine which (if any) console driver to use */
#if CONFIG_NFILE_DESCRIPTORS == 0 || defined(CONFIG_DEV_LOWCONSOLE)
# undef CONFIG_USE_SERIALDRIVER
# undef CONFIG_USE_EARLYSERIALINIT
#elif defined(CONFIG_DEV_CONSOLE) && CONFIG_NFILE_DESCRIPTORS > 0
# define CONFIG_USE_SERIALDRIVER 1
# define CONFIG_USE_EARLYSERIALINIT 1
#endif
/* Check if an interrupt stack size is configured */
#ifndef CONFIG_ARCH_INTERRUPTSTACK
# define CONFIG_ARCH_INTERRUPTSTACK 0
#endif
/* Macros to handle saving and restore interrupt state. In the current
* model, the state is copied from the stack to the TCB, but only a
* referenced is passed to get the state from the TCB.
*/
#define up_savestate(regs) up_copystate(regs, current_regs)
#define up_restorestate(regs) (current_regs = regs)
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
typedef void (*up_vector_t)(void);
#endif
/****************************************************************************
* Public Variables
****************************************************************************/
#ifndef __ASSEMBLY__
/* This holds a references to the current interrupt level register storage
* structure. If is non-NULL only during interrupt processing.
*/
extern uint32_t *current_regs;
/* This is the beginning of heap as provided from up_head.S. This is the first
* address in DRAM after the loaded program+bss+idle stack. The end of the
* heap is CONFIG_DRAM_END
*/
extern uint32_t g_heapbase;
/* Address of the saved user stack pointer */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
extern uint32_t g_userstack;
#endif
/* These 'addresses' of these values are setup by the linker script. They are
* not actual uint32_t storage locations! They are only used meaningfully in the
* following way:
*
* - The linker script defines, for example, the symbol_sdata.
* - The declareion extern uint32_t _sdata; makes C happy. C will believe
* that the value _sdata is the address of a uint32_t variable _data (it is
* not!).
* - We can recoved the linker value then by simply taking the address of
* of _data. like: uint32_t *pdata = &_sdata;
*/
extern uint32_t _stext; /* Start of .text */
extern uint32_t _etext; /* End_1 of .text + .rodata */
extern const uint32_t _eronly; /* End+1 of read only section (.text + .rodata) */
extern uint32_t _sdata; /* Start of .data */
extern uint32_t _edata; /* End+1 of .data */
extern uint32_t _sbss; /* Start of .bss */
extern uint32_t _ebss; /* End+1 of .bss */
#endif
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
/* Defined in files with the same name as the function */
extern void up_boot(void);
extern void up_copystate(uint32_t *dest, uint32_t *src);
extern void up_decodeirq(uint32_t *regs);
extern void up_irqinitialize(void);
#ifdef CONFIG_ARCH_DMA
extern void weak_function up_dmainitialize(void);
#endif
extern int up_saveusercontext(uint32_t *saveregs);
extern void up_fullcontextrestore(uint32_t *restoreregs) __attribute__ ((noreturn));
extern void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
extern void up_sigdeliver(void);
extern int up_timerisr(int irq, uint32_t *regs);
extern void up_lowputc(char ch);
extern void up_puts(const char *str);
extern void up_lowputs(const char *str);
extern void up_doirq(int irq, uint32_t *regs);
#ifdef CONFIG_PAGING
extern void up_pginitialize(void);
extern uint32_t *up_va2pte(uintptr_t vaddr);
extern void up_dataabort(uint32_t *regs, uint32_t far, uint32_t fsr);
#else /* CONFIG_PAGING */
# define up_pginitialize()
extern void up_dataabort(uint32_t *regs);
#endif /* CONFIG_PAGING */
extern void up_prefetchabort(uint32_t *regs);
extern void up_syscall(uint32_t *regs);
extern void up_undefinedinsn(uint32_t *regs);
/* Defined in up_vectors.S */
extern void up_vectorundefinsn(void);
extern void up_vectorswi(void);
extern void up_vectorprefetch(void);
extern void up_vectordata(void);
extern void up_vectoraddrexcptn(void);
extern void up_vectorirq(void);
extern void up_vectorfiq(void);
/* Defined in up_allocateheap.c */
#if CONFIG_MM_REGIONS > 1
void up_addregion(void);
#else
# define up_addregion()
#endif
/* Defined in up_serial.c */
#if CONFIG_NFILE_DESCRIPTORS > 0
extern void up_earlyserialinit(void);
extern void up_serialinit(void);
#else
# define up_earlyserialinit()
# define up_serialinit()
#endif
/* Defined in drivers/lowconsole.c */
#ifdef CONFIG_DEV_LOWCONSOLE
extern void lowconsole_init(void);
#else
# define lowconsole_init()
#endif
/* Defined in up_watchdog.c */
extern void up_wdtinit(void);
/* Defined in up_timerisr.c */
extern void up_timerinit(void);
/* Defined in up_irq.c */
extern void up_maskack_irq(int irq);
/* Defined in board/up_leds.c */
#ifdef CONFIG_ARCH_LEDS
extern void up_ledinit(void);
extern void up_ledon(int led);
extern void up_ledoff(int led);
#else
# define up_ledinit()
# define up_ledon(led)
# define up_ledoff(led)
#endif
/* Defined in board/up_network.c */
#ifdef CONFIG_NET
extern void up_netinitialize(void);
#else
# define up_netinitialize()
#endif
#ifdef CONFIG_USBDEV
extern void up_usbinitialize(void);
extern void up_usbuninitialize(void);
#else
# define up_usbinitialize()
# define up_usbuninitialize()
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_X86_SRC_COMMON_UP_INTERNAL_H */

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/****************************************************************************
* arch/x86/src/common/up_interruptcontext.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include "up_internal.h"
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: up_interrupt_context
*
* Description:
* Return true is we are currently executing in the interrupt handler
* context.
*
****************************************************************************/
bool up_interrupt_context(void)
{
return current_regs != NULL;
}

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/****************************************************************************
* arch/x86/src/common/up_lowputs.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_lowputs
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void up_lowputs(const char *str)
{
while(*str)
{
up_lowputc(*str++);
}
}

90
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/****************************************************************************
* arch/x86/src/common/up_mdelay.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/arch.h>
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_mdelay
*
* Description:
* Delay inline for the requested number of milliseconds.
* *** NOT multi-tasking friendly ***
*
* ASSUMPTIONS:
* The setting CONFIG_BOARD_LOOPSPERMSEC has been calibrated
*
****************************************************************************/
void up_mdelay(unsigned int milliseconds)
{
volatile int i;
volatile int j;
for (i = 0; i < milliseconds; i++)
{
for (j = 0; j < CONFIG_BOARD_LOOPSPERMSEC; j++)
{
}
}
}

85
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/****************************************************************************
* arch/x86/src/common/up_modifyreg16.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <arch/irq.h>
#include <nuttx/arch.h>
#include "up_arch.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg16
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits)
{
irqstate_t flags;
uint16_t regval;
flags = irqsave();
regval = getreg16((uint16_t)addr);
regval &= ~clearbits;
regval |= setbits;
putreg16(regval, (uint16_t)addr);
irqrestore(flags);
}

85
arch/x86/src/common/up_modifyreg32.c Normal file
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/****************************************************************************
* arch/x86/src/common/up_modifyreg32.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <arch/irq.h>
#include <nuttx/arch.h>
#include "up_arch.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg32
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits)
{
irqstate_t flags;
uint32_t regval;
flags = irqsave();
regval = getreg32((uint16_t)addr);
regval &= ~clearbits;
regval |= setbits;
putreg32(regval, (uint16_t)addr);
irqrestore(flags);
}

85
arch/x86/src/common/up_modifyreg8.c Normal file
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/****************************************************************************
* arch/x86/src/common/up_modifyreg8.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <arch/irq.h>
#include <nuttx/arch.h>
#include "up_arch.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg8
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits)
{
irqstate_t flags;
uint8_t regval;
flags = irqsave();
regval = getreg8((uint16_t)addr);
regval &= ~clearbits;
regval |= setbits;
putreg8(regval, (uint16_t)addr);
irqrestore(flags);
}

75
arch/x86/src/common/up_puts.c Normal file
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/****************************************************************************
* arch/x86/src/common/up_puts.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_puts
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void up_puts(const char *str)
{
while(*str)
{
up_putc(*str++);
}
}

129
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/****************************************************************************
* arch/x86/src/common/up_udelay.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
/****************************************************************************
* Definitions
****************************************************************************/
#define CONFIG_BOARD_LOOPSPER100USEC ((CONFIG_BOARD_LOOPSPERMSEC+5)/10)
#define CONFIG_BOARD_LOOPSPER10USEC ((CONFIG_BOARD_LOOPSPERMSEC+50)/100)
#define CONFIG_BOARD_LOOPSPERUSEC ((CONFIG_BOARD_LOOPSPERMSEC+500)/1000)
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_udelay
*
* Description:
* Delay inline for the requested number of microseconds. NOTE: Because
* of all of the setup, several microseconds will be lost before the actual
* timing looop begins. Thus, the delay will always be a few microseconds
* longer than requested.
*
* *** NOT multi-tasking friendly ***
*
* ASSUMPTIONS:
* The setting CONFIG_BOARD_LOOPSPERMSEC has been calibrated
*
****************************************************************************/
void up_udelay(useconds_t microseconds)
{
volatile int i;
/* We'll do this a little at a time because we expect that the
* CONFIG_BOARD_LOOPSPERUSEC is very inaccurate during to truncation in
* the divisions of its calculation. We'll use the largest values that
* we can in order to prevent significant error buildup in the loops.
*/
while (microseconds > 1000)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPERMSEC; i++)
{
}
microseconds -= 1000;
}
while (microseconds > 100)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPER100USEC; i++)
{
}
microseconds -= 100;
}
while (microseconds > 10)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPER10USEC; i++)
{
}
microseconds -= 10;
}
while (microseconds > 0)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPERUSEC; i++)
{
}
microseconds--;
}
}

135
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/****************************************************************************
* arch/x86/src/i486/up_createstack.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: up_create_stack
*
* Description:
* Allocate a stack for a new thread and setup up stack-related information
* in the TCB.
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware, processor,
* etc. This value is retained only for debug purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The initial value of
* the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The requested stack size. At least this much must be
* allocated.
*
****************************************************************************/
int up_create_stack(_TCB *tcb, size_t stack_size)
{
if (tcb->stack_alloc_ptr && tcb->adj_stack_size != stack_size)
{
sched_free(tcb->stack_alloc_ptr);
tcb->stack_alloc_ptr = NULL;
}
if (!tcb->stack_alloc_ptr)
{
#ifdef CONFIG_DEBUG
tcb->stack_alloc_ptr = (uint32_t*)zalloc(stack_size);
#else
tcb->stack_alloc_ptr = (uint32_t*)malloc(stack_size);
#endif
}
if (tcb->stack_alloc_ptr)
{
size_t top_of_stack;
size_t size_of_stack;
/* The i486 uses a push-down stack: the stack grows toward lower
* addresses in memory. The stack pointer register, points to the
* lowest, valid work address (the "top" of the stack). Items on
* the stack are referenced as positive word offsets from sp.
*/
top_of_stack = (uint32_t)tcb->stack_alloc_ptr + stack_size - 4;
/* The i486 stack must be aligned at word (4 byte) boundaries. If
* necessary top_of_stack must be rounded down to the next boundary
*/
top_of_stack &= ~3;
size_of_stack = top_of_stack - (uint32_t)tcb->stack_alloc_ptr + 4;
/* Save the adjusted stack values in the _TCB */
tcb->adj_stack_ptr = (uint32_t*)top_of_stack;
tcb->adj_stack_size = size_of_stack;
up_ledon(LED_STACKCREATED);
return OK;
}
return ERROR;
}

79
arch/x86/src/i486/up_releasestack.c Normal file
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/****************************************************************************
* arch/x86/src/common/up_releasestack.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "up_internal.h"
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: up_release_stack
*
* Description:
* A task has been stopped. Free all stack related resources retained in
* the defunct TCB.
*
****************************************************************************/
void up_release_stack(_TCB *dtcb)
{
if (dtcb->stack_alloc_ptr)
{
sched_free(dtcb->stack_alloc_ptr);
dtcb->stack_alloc_ptr = NULL;
}
dtcb->adj_stack_size = 0;
}

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arch/x86/src/i486/up_usestack.c Normal file
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/****************************************************************************
* arch/x86/src/common/up_usestack.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: up_use_stack
*
* Description:
* Setup up stack-related information in the TCB using pre-allocated stack
* memory
*
* The following TCB fields must be initialized:
* adj_stack_size: Stack size after adjustment for hardware, processor,
* etc. This value is retained only for debug purposes.
* stack_alloc_ptr: Pointer to allocated stack
* adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The initial value of
* the stack pointer.
*
* Inputs:
* tcb: The TCB of new task
* stack_size: The allocated stack size.
*
****************************************************************************/
int up_use_stack(_TCB *tcb, void *stack, size_t stack_size)
{
size_t top_of_stack;
size_t size_of_stack;
if (tcb->stack_alloc_ptr)
{
sched_free(tcb->stack_alloc_ptr);
}
/* Save the stack allocation */
tcb->stack_alloc_ptr = stack;
/* The i486 uses a push-down stack: the stack grows toward loweraddresses in
* memory. The stack pointer register, points to the lowest, valid work
* address (the "top" of the stack). Items on the stack are referenced as
* positive word offsets from sp.
*/
top_of_stack = (uint32_t)tcb->stack_alloc_ptr + stack_size - 4;
/* The i486 stack must be aligned at word (4 byte) boundaries. If necessary
* top_of_stack must be rounded down to the next boundary
*/
top_of_stack &= ~3;
size_of_stack = top_of_stack - (uint32_t)tcb->stack_alloc_ptr + 4;
/* Save the adjusted stack values in the _TCB */
tcb->adj_stack_ptr = (uint32_t*)top_of_stack;
tcb->adj_stack_size = size_of_stack;
return OK;
}

52
arch/x86/src/qemu/Make.defs Executable file
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############################################################################
# arch/x86/src/qemu/Make.defs
#
# Copyright (C) 2011 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
# The start-up, "head", file
HEAD_ASRC = qemu_head.S
# Common x86 and i486 files
CMN_ASRCS =
CMN_CSRCS = up_createstack.c up_mdelay.c up_udelay.c up_exit.c up_initialize.c \
up_interruptcontext.c up_modifyreg8.c up_modifyreg16.c \
up_modifyreg32.c up_releasestack.c up_usestack.c
# Required QEMU files
CHIP_ASRCS = qemu_saveusercontext.S qemu_fullcontextrestore.S
CHIP_CSRCS = qemu_idle.c
# Configuration-dependent QEMU files

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arch/x86/src/qemu/chip.h Executable file
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/************************************************************************************
* arch/x86/src/qemu/chip.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_X86_SRC_QEMU_QEMU_CHIP_H
#define __ARCH_X86_SRC_QEMU_QEMU_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Get customizations for each supported QEMU emulation */
#ifdef CONFIG_ARCH_CHIP_QEMU
#else
# error "Unsupported STM32 chip"
#endif
/* Include only the memory map. Other chip hardware files should then include this
* file for the proper setup
*/
#include "qemu_memorymap.h"
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_X86_SRC_QEMU_QEMU_CHIP_H */

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arch/x86/src/qemu/qemu_fullcontextrestore.S Normal file
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/**************************************************************************
* arch/x86/src/qemu/qemu_fullcontextrestore.S
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Conditional Compilation Options
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include <arch/irq.h>
#include "up_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
#ifdef __CYGWIN__
# define SYMBOL(s) _##s
#else
# define SYMBOL(s) s
#endif
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_fullcontextrestore
*
* Full C prototype:
* void up_fullcontextrestore(uint32_t *regs) __attribute__ ((noreturn));
*
**************************************************************************/
#ifdef CONFIG_X86_NASM
# warning "No Nasm support"
#else
.text
.globl SYMBOL(up_fullcontextrestore)
#ifndef __CYGWIN__
.type SYMBOL(up_fullcontextrestore), @function
#endif
SYMBOL(up_fullcontextrestore):
movl 4(%esp), %ecx /* U_pthread_jmpbuf in %ecx. */
movl 8(%esp), %eax /* Second argument is return value. */
/* Save the return address now. */
movl (JB_PC)(%ecx), %edx
/* Restore registers. */
movl (JB_EBX)(%ecx), %ebx
movl (JB_ESI)(%ecx), %esi
movl (JB_EDI)(%ecx), %edi
movl (JB_EBP)(%ecx), %ebp
movl (JB_SP)(%ecx), %esp
/* Jump to saved PC. */
jmp *%edx
#ifndef __CYGWIN__
.size SYMBOL(up_fullcontextrestore), . - SYMBOL(up_fullcontextrestore)
#endif
.end
#endif /* CONFIG_X86_NASM */

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arch/x86/src/qemu/qemu_head.S Executable file
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/****************************************************************************
* arch/x86/src/qemu/qemu_head.S
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* .text
****************************************************************************/
#ifdef CONFIG_X86_NASM
global loader /* Making entry point visible to linker */
extern os_start /* os_start is defined elsewhere */
extern up_lowsetup /* up_lowsetup is defined elsewhere */
/* Setting up the Multiboot header - see GRUB docs for details */
MODULEALIGN equ 1<<0 /* Align loaded modules on page boundaries */
MEMINFO equ 1<<1 /* Provide memory map */
FLAGS equ MODULEALIGN | MEMINFO /* This is the Multiboot 'flag' field */
MAGIC equ 0x1BADB002 /* 'magic number' lets bootloader find the header */
CHECKSUM equ -(MAGIC + FLAGS) /* Checksum required */
section .text
align 4
MultiBootHeader:
dd MAGIC
dd FLAGS
dd CHECKSUM
/* Reserve initial kernel stack space */
STACKSIZE equ 0x4000 /* That's 16k */
loader:
mov esp, stack+STACKSIZE /* Set up the stack */
push eax /* Pass Multiboot magic number */
push ebx /* Pass Multiboot info structure */
call up_lowsetup /* Low-level, pre-OS initialization */
call os_start /* Start NuttX */
cli
hang:
hlt /* Halt machine should NuttX return */
jmp hang
section .bss
align 4
stack:
resb STACKSIZE /* Reserve 16k stack on a doubleword boundary */
#else /* GAS */
.global loader /* Making entry point visible to linker */
.global os_start /* os_start is defined elsewhere */
.global up_lowsetup /* up_lowsetup is defined elsewhere */
/* Setting up the Multiboot header - see GRUB docs for details */
.set ALIGN, 1<<0 /* Align loaded modules on page boundaries */
.set MEMINFO, 1<<1 /* Provide memory map */
.set FLAGS, ALIGN | MEMINFO /* This is the Multiboot 'flag' field */
.set MAGIC, 0x1BADB002 /* 'magic number' lets bootloader find the header */
.set CHECKSUM, -(MAGIC + FLAGS) /* Checksum required */
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM
/* Reserve initial kernel stack space */
.set STACKSIZE, 0x4000 /* That is, 16k */
.comm stack, STACKSIZE, 32 /* Reserve 16k stack on a quadword boundary */
loader:
mov $(stack + STACKSIZE), %esp /* Set up the stack */
push %eax /* Multiboot magic number */
push %ebx /* Multiboot data structure */
call up_lowsetup /* Low-level, pre-OS initialization */
call os_start /* Start NuttX */
cli
hang:
hlt /* Halt machine should NuttX return */
jmp hang
#endif
.end
#endif

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arch/x86/src/qemu/qemu_idle.c Normal file
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/****************************************************************************
* arch/x86/src/qemu/qemu_idle.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_idle
*
* Description:
* up_idle() is the logic that will be executed when their is no other
* ready-to-run task. This is processor idle time and will continue until
* some interrupt occurs to cause a context switch from the idle task.
*
* Processing in this state may be processor-specific. e.g., this is where
* power management operations might be performed.
*
****************************************************************************/
void up_idle(void)
{
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
/* If the system is idle and there are no timer interrupts, then process
* "fake" timer interrupts. Hopefully, something will wake up.
*/
sched_process_timer();
#else
/* Sleep until an interrupt occurs to save power */
#endif
}

389
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/************************************************************************************
* arch/x86/src/qemu/qemu_internal.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_X86_SRC_QEMU_QEMU_INTERNAL_H
#define __ARCH_X86_SRC_QEMU_QEMU_INTERNAL_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include "up_internal.h"
#include "chip.h"
/************************************************************************************
* Definitions
************************************************************************************/
/* Configuration ********************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Inline Functions
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Public Data
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: i486_clockconfig
*
* Description:
* Called to initialize the LPC17XX. This does whatever setup is needed to put the
* MCU in a usable state. This includes the initialization of clocking using the
* settings in board.h.
*
************************************************************************************/
EXTERN void i486_clockconfig(void);
/************************************************************************************
* Name: i486_lowsetup
*
* Description:
* Called at the very beginning of _start. Performs low level initialization
* including setup of the console UART. This UART done early so that the serial
* console is available for debugging very early in the boot sequence.
*
************************************************************************************/
EXTERN void i486_lowsetup(void);
/************************************************************************************
* Name: i486_gpioirqinitialize
*
* Description:
* Initialize logic to support a second level of interrupt decoding for GPIO pins.
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
EXTERN void i486_gpioirqinitialize(void);
#else
# define i486_gpioirqinitialize()
#endif
/************************************************************************************
* Name: i486_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
EXTERN int i486_configgpio(uint16_t cfgset);
/************************************************************************************
* Name: i486_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
EXTERN void i486_gpiowrite(uint16_t pinset, bool value);
/************************************************************************************
* Name: i486_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
EXTERN bool i486_gpioread(uint16_t pinset);
/************************************************************************************
* Name: i486_gpioirqenable
*
* Description:
* Enable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
EXTERN void i486_gpioirqenable(int irq);
#else
# define i486_gpioirqenable(irq)
#endif
/************************************************************************************
* Name: i486_gpioirqdisable
*
* Description:
* Disable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
EXTERN void i486_gpioirqdisable(int irq);
#else
# define i486_gpioirqdisable(irq)
#endif
/************************************************************************************
* Function: i486_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the base address of the provided pinset.
*
************************************************************************************/
#ifdef CONFIG_DEBUG_GPIO
EXTERN int i486_dumpgpio(uint16_t pinset, const char *msg);
#else
# define i486_dumpgpio(p,m)
#endif
/************************************************************************************
* Name: i486_spi/ssp0/ssp1select, i486_spi/ssp0/ssp1status, and
* i486_spi/ssp0/ssp1cmddata
*
* Description:
* These external functions must be provided by board-specific logic. They are
* implementations of the select, status, and cmddata methods of the SPI interface
* defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods
* including up_spiinitialize()) are provided by common LPC17xx logic. To use
* this common SPI logic on your board:
*
* 1. Provide logic in i486_boardinitialize() to configure SPI/SSP chip select
* pins.
* 2. Provide i486_spi/ssp0/ssp1select() and i486_spi/ssp0/ssp1status() functions
* in your board-specific logic. These functions will perform chip selection
* and status operations using GPIOs in the way your board is configured.
* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
* i486_spi/ssp0/ssp1cmddata() functions in your board-specific logic. These
* functions will perform cmd/data selection operations using GPIOs in the way
* your board is configured.
* 3. Add a call to up_spiinitialize() in your low level application
* initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
*
************************************************************************************/
struct spi_dev_s;
enum spi_dev_e;
#ifdef CONFIG_I486_SPI
EXTERN void i486_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t i486_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int i486_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#endif
/****************************************************************************
* Name: ssp_flush
*
* Description:
* Flush and discard any words left in the RX fifo. This can be called
* from ssp0/1select after a device is deselected (if you worry about such
* things).
*
* Input Parameters:
* dev - Device-specific state data
*
* Returned Value:
* None
*
****************************************************************************/
struct spi_dev_s;
#ifdef CONFIG_I486_SPI
EXTERN void spi_flush(FAR struct spi_dev_s *dev);
#endif
#if defined(CONFIG_I486_SSP0) || defined(CONFIG_I486_SSP1)
EXTERN void ssp_flush(FAR struct spi_dev_s *dev);
#endif
/****************************************************************************
* Name: i486_dmainitialize
*
* Description:
* Initialize the GPDMA subsystem.
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN void i486_dmainitilaize(void);
#endif
/****************************************************************************
* Name: i486_dmachannel
*
* Description:
* Allocate a DMA channel. This function sets aside a DMA channel and
* gives the caller exclusive access to the DMA channel.
*
* Returned Value:
* One success, this function returns a non-NULL, void* DMA channel
* handle. NULL is returned on any failure. This function can fail only
* if no DMA channel is available.
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN DMA_HANDLE i486_dmachannel(void);
#endif
/****************************************************************************
* Name: i486_dmafree
*
* Description:
* Release a DMA channel. NOTE: The 'handle' used in this argument must
* NEVER be used again until i486_dmachannel() is called again to re-gain
* a valid handle.
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN void i486_dmafree(DMA_HANDLE handle);
#endif
/****************************************************************************
* Name: i486_dmasetup
*
* Description:
* Configure DMA for one transfer.
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN int i486_dmarxsetup(DMA_HANDLE handle,
uint32_t control, uint32_t config,
uint32_t srcaddr, uint32_t destaddr,
size_t nbytes);
#endif
/****************************************************************************
* Name: i486_dmastart
*
* Description:
* Start the DMA transfer
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN int i486_dmastart(DMA_HANDLE handle, dma_callback_t callback, void *arg);
#endif
/****************************************************************************
* Name: i486_dmastop
*
* Description:
* Cancel the DMA. After i486_dmastop() is called, the DMA channel is
* reset and i486_dmasetup() must be called before i486_dmastart() can be
* called again
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
EXTERN void i486_dmastop(DMA_HANDLE handle);
#endif
/****************************************************************************
* Name: i486_dmasample
*
* Description:
* Sample DMA register contents
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
#ifdef CONFIG_DEBUG_DMA
EXTERN void i486_dmasample(DMA_HANDLE handle, struct i486_dmaregs_s *regs);
#else
# define i486_dmasample(handle,regs)
#endif
#endif
/****************************************************************************
* Name: i486_dmadump
*
* Description:
* Dump previously sampled DMA register contents
*
****************************************************************************/
#ifdef CONFIG_I486_GPDMA
#ifdef CONFIG_DEBUG_DMA
EXTERN void i486_dmadump(DMA_HANDLE handle, const struct i486_dmaregs_s *regs,
const char *msg);
#else
# define i486_dmadump(handle,regs,msg)
#endif
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_X86_SRC_QEMU_QEMU_INTERNAL_H */

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/************************************************************************************
* arch/x86/src/qemu/qemu_memorymap.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_X86_SRC_QEMU_QEMU_MEMORYMAP_H
#define __ARCH_X86_SRC_QEMU_QEMU_MEMORYMAP_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Memory Map ***********************************************************************/
/* Peripheral Base Addresses ********************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_X86_SRC_QEMU_QEMU_MEMORYMAP_H */

130
arch/x86/src/qemu/qemu_saveusercontext.S Normal file
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@ -0,0 +1,130 @@
/**************************************************************************
* arch/x86/src/qemu/up_saveusercontext.S
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Conditional Compilation Options
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include <arch/irq.h>
#include "up_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
#ifdef __CYGWIN__
# define SYMBOL(s) _##s
#else
# define SYMBOL(s) s
#endif
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_saveusercontext
*
* Full C prototype:
* int up_saveusercontext(uint32_t *regs);
*
**************************************************************************/
#ifdef CONFIG_X86_NASM
# warning "No Nasm support"
#else
.text
.globl SYMBOL(up_saveusercontext)
#ifndef __CYGWIN__
.type SYMBOL(up_saveusercontext), @function
#endif
SYMBOL(up_saveusercontext):
/* %ebx, %esi, %edi, and %ebp must be preserved.
* save %ebx, $esi, and %edi now... */
movl 4(%esp), %eax
movl %ebx, (REG_EBX)(%eax)
movl %esi, (REG_ESI)(%eax)
movl %edi, (REG_EDI)(%eax)
/* Save the value of SP as will be after we return */
leal 4(%esp), %ecx
movl %ecx, (REG_SP)(%eax)
/* Save the return PC */
movl 0(%esp), %ecx
movl %ecx, (REG_PC)(%eax)
/* Save the framepointer */
movl %ebp, (REG_EBP)(%eax)
/* And return 0 */
xorl %eax, %eax
ret
#ifndef __CYGWIN__
.size SYMBOL(up_saveusercontext), . - SYMBOL(up_saveusercontext)
#endif
.end
#endif

18
arch/z80/include/serial.h
View file

@ -1,7 +1,7 @@
/****************************************************************************
* arch/serial.h
* arch/z80/include/serial.h
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -33,23 +33,19 @@
*
****************************************************************************/
#ifndef __ARCH_SERIAL_H
#define __ARCH_SERIAL_H
#ifndef __ARCH_Z80_INCLUDE_SERIAL_TYPES_H
#define __ARCH_Z80_INCLUDE_SERIAL_TYPES_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/ioctl.h>
/****************************************************************************
* Definitions
****************************************************************************/
/* IOCTL commands supported by the z80 serial driver */
#define TIOCSBRK 0x5401 /* BSD compatibility */
#define TIOCCBRK 0x5402 /* " " " " */
#define TIOCSERGSTRUCT 0x5403 /* Get up_dev_t for port */
/****************************************************************************
* Public Data
****************************************************************************/
@ -58,4 +54,4 @@
* Public Functions
****************************************************************************/
#endif /* __ARCH_SERIAL_H */
#endif /* __ARCH_Z80_INCLUDE_SERIAL_TYPES_H */