nuttx/arch
lanceharvie 6c923291fd risc-v/allwinner-d1: Add initial Allwinner D1 board support.
Add initial Apache NuttX support for the Allwinner D1 / T-Head C906
running in supervisor mode under OpenSBI.

Add support for:
- RV64 D1 architecture definitions
- Lichee RV 86 Panel board configuration
- UART0 console at 115200 baud
- D1 PLIC interrupt controller
- native D1 Timer1 scheduler tick
- early inherited-watchdog disable
- FLAT S-mode NSH configuration

The port has been tested on physical Sipeed Lichee RV / 86 Panel
hardware and boots to an interactive NuttShell.

The scheduler tick uses OSC24M Timer1 at 1000 Hz. The Timer1 interval
register is programmed with 23999 to produce exactly 24000 input clocks
per tick on the physical D1.

Assisted-by: OpenAI Codex:gpt-5.6-sol
Signed-off-by: Lance Harvie <lanceharvie@gmail.com>
2026-08-19 11:54:47 -03:00
..
arm boards/arm: Add support for the original BeagleBone 2026-08-19 10:11:38 +08:00
arm64 arch/arm64: Build fork() children from the caller's syscall frame. 2026-08-10 08:57:30 -03:00
avr tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
ceva !sched/arch/libc: Give fork() and vfork() their real, separate semantics. 2026-08-10 08:57:30 -03:00
dummy
hc tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
mips mips/Makefile: Add nuttx build with CONFIG_ALLSYMS enabled. 2026-08-11 09:53:38 -03:00
misoc tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
or1k tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
renesas tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
risc-v risc-v/allwinner-d1: Add initial Allwinner D1 board support. 2026-08-19 11:54:47 -03:00
sim sim: update Makefile to match Cmake config 2026-08-14 19:57:07 +08:00
sparc tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
tricore arch/tricore: perf.c donot depend on illd 2026-08-13 12:38:45 +02:00
x86 arch/x86: Provide vfork(). 2026-08-15 09:00:20 -03:00
x86_64 arch/x86_64: align the user signal frame and skip the ABI red zone 2026-08-11 22:06:32 +08:00
xtensa xtensa/esp32s3: Let a protected build boot from simple boot. 2026-08-11 23:49:21 +08:00
z16 tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
z80 style: fix checkpatch issues after debug.h move 2026-04-07 07:50:06 -03:00
CMakeLists.txt cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
Kconfig arch/x86: Provide vfork(). 2026-08-15 09:00:20 -03:00