nuttx

History

Ville Juven c15b6701ce RISC-V: Implement option to run NuttX in supervisor mode (S-mode)

- Add config "ARCH_USE_S_MODE" which controls whether the kernel
  runs in M-mode or S-mode
- Add more MSTATUS and most of the SSTATUS register definitions
- Add more MIP flags for interrupt delegation
- Add handling of interrupts from S-mode
- Add handling of FPU from S-mode
- Add new context handling functions that are not dependent on the trap
  handlers / ecall

NOTE: S-mode requires a companion SW (SBI) which is not yet implemented,
      thus S-mode is not usable as is, yet.

2022-04-01 16:19:42 -03:00

configs

arch: Remove SYS_RESERVED from Kconfg

2022-02-27 22:54:13 +08:00

include

…

kernel

boards: Replace CONFIG_CYGWIN_WINTOOL with CONVERT_PATH

2022-02-20 21:15:36 +01:00

scripts

xtensa|risc-v: Make CXX exception and RTTI depend on Kconfig options

2022-03-30 11:19:29 +08:00

src

RISC-V: Implement option to run NuttX in supervisor mode (S-mode)

2022-04-01 16:19:42 -03:00

Kconfig

…

README-qemu.txt

arch:rv64:c906:demo protect build without PMP.

2021-03-16 11:43:10 -03:00

README.txt

…

README.txt

1. Download and install toolchain

  https://occ.t-head.cn/community/download

2. Download and install qemu

  https://occ.t-head.cn/community/download

3. Modify defconfig

4. Configure and build NuttX

  $ make distclean
  $ ./tools/configure.sh smartl-c906:nsh
  $ make -j

5. Run the nuttx by downloading elf to RAM via HW debugger

6. TODO

  Support FPU
  Support ELF based file applications
  Support RISC-V User mode