296 lines
11 KiB
C
296 lines
11 KiB
C
/****************************************************************************
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* include/nuttx/mtd/nand_raw.h
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*
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* Copyright (c) 2012, Atmel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the names NuttX nor Atmel nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_MTD_NAND_RAW_H
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#define __INCLUDE_NUTTX_MTD_NAND_RAW_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/mtd/nand_config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/mtd/nand_model.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Nand flash commands */
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#define COMMAND_READ_1 0x00
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#define COMMAND_READ_2 0x30
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#define COMMAND_COPYBACK_READ_1 0x00
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#define COMMAND_COPYBACK_READ_2 0x35
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#define COMMAND_COPYBACK_PROGRAM_1 0x85
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#define COMMAND_COPYBACK_PROGRAM_2 0x10
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#define COMMAND_RANDOM_OUT 0x05
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#define COMMAND_RANDOM_OUT_2 0xe0
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#define COMMAND_RANDOM_IN 0x85
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#define COMMAND_READID 0x90
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#define COMMAND_WRITE_1 0x80
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#define COMMAND_WRITE_2 0x10
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#define COMMAND_ERASE_1 0x60
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#define COMMAND_ERASE_2 0xd0
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#define COMMAND_STATUS 0x70
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#define COMMAND_RESET 0xff
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/* Nand flash commands (small blocks) */
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#define COMMAND_READ_A 0x00
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#define COMMAND_READ_C 0x50
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/* Type of ECC to be performed (may also need to be enabled in the
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* configuration)
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*
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* NANDECC_NONE No ECC, only raw NAND FLASH accesses
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* NANDECC_SWECC Software ECC. Handled by the common MTD logic.
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* NANDECC_HWECC Values >= 2 are various hardware ECC implementations
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* all handled by the lower-half, raw NAND FLASH driver.
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* These hardware ECC types may be extended beginning
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* with the value NANDECC_HWECC.
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*
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* Software ECC is performed by common, upper-half MTD logic; All
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* hardware assisted ECC operations are handled by the platform-specific,
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* lower-half driver.
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*/
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#define NANDECC_NONE 0
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#define NANDECC_SWECC 1
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#define NANDECC_HWECC 2
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/* NAND access macros */
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#define WRITE_COMMAND8(raw, command) \
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{*((volatile uint8_t *)(raw)->cmdaddr) = (uint8_t)command;}
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#define WRITE_COMMAND16(raw, command) \
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{*((volatile uint16_t *)(raw)->cmdaddr) = (uint16_t)command;}
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#define WRITE_ADDRESS8(raw, address) \
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{*((volatile uint8_t *)(raw)->addraddr) = (uint8_t)address;}
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#define WRITE_ADDRESS16(raw, address) \
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{*((volatile uint16_t *)(raw)->addraddr) = (uint16_t)address;}
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#define WRITE_DATA8(raw, data) \
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{*((volatile uint8_t *)(raw)->dataaddr) = (uint8_t)data;}
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#define READ_DATA8(raw) \
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(*((volatile uint8_t *)(raw)->dataaddr))
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#define WRITE_DATA16(raw, data) \
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{*((volatile uint16_t *)(raw)->dataaddr) = (uint16_t)data;}
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#define READ_DATA16(raw) \
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(*((volatile uint16_t *)(raw)->dataaddr))
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/* struct nand_raw_s operations */
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/****************************************************************************
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* Name: NAND_ERASEBLOCK
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*
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* Description:
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* Erases the specified block of the device.
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*
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* Input Parameters:
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* raw - Lower-half, raw NAND FLASH interface
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* block - Number of the physical block to erase.
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*
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* Returned Value:
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* OK is returned in success; a negated errno value is returned on failure.
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*
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****************************************************************************/
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#define NAND_ERASEBLOCK(r,b) ((r)->eraseblock(r,b))
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/****************************************************************************
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* Name: NAND_RAWREAD
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*
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* Description:
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* Reads the data and/or the spare areas of a page of a NAND FLASH into the
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* provided buffers. This is a raw read of the flash contents.
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*
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* Input Parameters:
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* raw - Lower-half, raw NAND FLASH interface
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* block - Number of the block where the page to read resides.
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* page - Number of the page to read inside the given block.
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* data - Buffer where the data area will be stored.
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* spare - Buffer where the spare area will be stored.
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*
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* Returned Value:
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* OK is returned in success; a negated errno value is returned on failure.
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*
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****************************************************************************/
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#define NAND_RAWREAD(r,b,p,d,s) ((r)->rawread(r,b,p,d,s))
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/****************************************************************************
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* Name: NAND_RAWWRITE
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*
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* Description:
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* Writes the data and/or the spare area of a page on a NAND FLASH chip.
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* This is a raw write of the flash contents.
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*
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* Input Parameters:
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* raw - Lower-half, raw NAND FLASH interface
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* block - Number of the block where the page to write resides.
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* page - Number of the page to write inside the given block.
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* data - Buffer containing the data to be writing
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* spare - Buffer containing the spare data to be written.
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*
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* Returned Value:
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* OK is returned in success; a negated errno value is returned on failure.
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*
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****************************************************************************/
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#define NAND_RAWWRITE(r,b,p,d,s) ((r)->rawwrite(r,b,p,d,s))
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/****************************************************************************
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* Name: NAND_READPAGE
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*
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* Description:
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* Reads the data and/or the spare areas of a page of a NAND FLASH into the
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* provided buffers. Hardware ECC checking will be performed if so
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* configured.
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*
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* Input Parameters:
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* raw - Lower-half, raw NAND FLASH interface
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* block - Number of the block where the page to read resides.
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* page - Number of the page to read inside the given block.
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* data - Buffer where the data area will be stored.
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* spare - Buffer where the spare area will be stored.
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*
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* Returned Value:
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* OK is returned in success; a negated errno value is returned on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_MTD_NAND_HWECC
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# define NAND_READPAGE(r,b,p,d,s) ((r)->readpage(r,b,p,d,s))
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#else
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# define NAND_READPAGE(r,b,p,d,s) ((r)->rawread(r,b,p,d,s))
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#endif
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/****************************************************************************
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* Name: NAND_WRITEPAGE
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*
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* Description:
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* Writes the data and/or the spare area of a page on a NAND FLASH chip.
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* Hardware ECC checking will be performed if so configured.
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*
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* Input Parameters:
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* raw - Lower-half, raw NAND FLASH interface
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* block - Number of the block where the page to write resides.
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* page - Number of the page to write inside the given block.
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* data - Buffer containing the data to be writing
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* spare - Buffer containing the spare data to be written.
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*
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* Returned Value:
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* OK is returned in success; a negated errno value is returned on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_MTD_NAND_HWECC
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# define NAND_WRITEPAGE(r,b,p,d,s) ((r)->writepage(r,b,p,d,s))
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#else
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# define NAND_WRITEPAGE(r,b,p,d,s) ((r)->rawwrite(r,b,p,d,s))
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* This type represents the visible portion of the lower-half, raw NAND MTD
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* device. The lower-half driver may freely append additional information
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* after this required header information.
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*/
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struct nand_raw_s
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{
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/* NAND data description */
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struct nand_model_s model; /* The NAND model storage */
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uintptr_t cmdaddr; /* NAND command address base */
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uintptr_t addraddr; /* NAND address address base */
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uintptr_t dataaddr; /* NAND data address */
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uint8_t ecctype; /* See NANDECC_* definitions */
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/* NAND operations */
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CODE int (*eraseblock)(FAR struct nand_raw_s *raw, off_t block);
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CODE int (*rawread)(FAR struct nand_raw_s *raw, off_t block,
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unsigned int page, FAR void *data, FAR void *spare);
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CODE int (*rawwrite)(FAR struct nand_raw_s *raw, off_t block,
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unsigned int page, FAR const void *data,
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FAR const void *spare);
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#ifdef CONFIG_MTD_NAND_HWECC
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CODE int (*readpage)(FAR struct nand_raw_s *raw, off_t block,
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unsigned int page, FAR void *data, FAR void *spare);
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CODE int (*writepage)(FAR struct nand_raw_s *raw, off_t block,
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unsigned int page, FAR const void *data,
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FAR const void *spare);
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#endif
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#if defined(CONFIG_MTD_NAND_SWECC) || defined(CONFIG_MTD_NAND_HWECC)
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/* ECC working buffers */
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uint8_t spare[CONFIG_MTD_NAND_MAXPAGESPARESIZE];
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uint8_t ecc[CONFIG_MTD_NAND_MAXSPAREECCBYTES];
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#endif
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __INCLUDE_NUTTX_MTD_NAND_RAW_H */
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