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This PR adds support for the Allwinner A527 Arm64 SoC. This will be used by the upcoming port of NuttX for PINE64 Yuzuki Avaota-A1 SBC. Most of the code was derived from NuttX for QEMU Arm64 Kernel Build qemu-armv8a:knsh. The modified code is explained here: https://lupyuen.github.io/articles/avaota#appendix-port-nuttx-to-avaota-a1 Modified Files in arch/arm64: Kconfig: Added ARCH_CHIP_SUNXI for Allwinner 64-bit SoCs. Added ARCH_CHIP_SUNXI_A527 for A527 SoC. New Files in arch/arm64: include/a527/chip.h: A527 Definitions include/a527/irq.h: External Interrupts src/a527/chip.h: Memory Map src/a527/a527_boot.c, a527_boot.h: Startup Code src/a527/a527_initialize.c: Power Management src/a527/a527_lowputc.S: UART Output src/a527/a527_serial.c: Serial Driver src/a527/a527_textheap.c: Text Heap src/a527/a527_timer.c: A527 Timer src/a527/Kconfig: A527 Config src/a527/Make.defs, CMakeLists.txt: Makefiles Signed-off-by: Lup Yuen Lee <luppy@appkaki.com> |
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| .github | ||
| arch | ||
| audio | ||
| binfmt | ||
| boards | ||
| cmake | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| dummy | ||
| fs | ||
| graphics | ||
| include | ||
| libs | ||
| mm | ||
| net | ||
| openamp | ||
| pass1 | ||
| sched | ||
| syscall | ||
| tools | ||
| video | ||
| wireless | ||
| .asf.yaml | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| .yamllint | ||
| AUTHORS | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
| Makefile | ||
| NOTICE | ||
| README.md | ||
| ReleaseNotes | ||
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
Getting Started
First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.
Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.