nuttx/arch/risc-v/include
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
..
allwinner-d1 risc-v/allwinner-d1: Add initial Allwinner D1 board support. 2026-08-19 11:54:47 -03:00
bl602
bl808
c906
eic7700x arch/risc-v/eic7700x: Add support for ESWIN EIC7700X SoC 2025-03-04 09:27:48 -05:00
esp32c3
esp32c3-legacy
esp32c6
esp32h2
esp32p4 arch/risc-v/espressif/esp32p4: Support ESP32-P4 on NuttX 2026-03-09 21:40:25 +01:00
fe310
gd32vw55x risc-v/gd32vw55x: add GigaDevice GD32VW553 port (Wi-Fi 6) 2026-07-16 10:03:16 -03:00
hpm6000
hpm6750
jh7110
k210 arch/risc-v/k210: Remove QEMU support 2026-03-23 14:25:29 +08:00
k230
litex
mpfs
qemu-rv
rp23xx-rv arch/risc-v/rp23xx-riscv: Add rp23xx RISC-V cores support (Hazard3) 2025-08-11 08:56:27 +08:00
rv32m1
sg2000
thead
.gitignore
arch.h arch/risc-v/rp23xx-riscv: Add rp23xx RISC-V cores support (Hazard3) 2025-08-11 08:56:27 +08:00
barriers.h arch/riscv: Add CONFIG_ARCH_RV_ISA_ZICSR_ZIFENCEI for fence.i 2026-06-28 02:17:03 +08:00
csr.h
elf.h
inttypes.h
irq.h arch: rename STACK_ALIGNMENT to STACKFRAME_ALIGN across all architectures 2026-01-22 15:37:24 +08:00
limits.h
mode.h
setjmp.h
spinlock.h
stdarg.h
syscall.h arch/risc-v: preserve ra across ecall for fp-chain backtrace 2026-07-16 15:24:12 +08:00
types.h