Apache NuttX RTOS on 64-bit QEMU RISC-V Emulator

Apache NuttX RTOS on 64-bit RISC-V

Read the articles...

• "64-bit RISC-V with Apache NuttX Real-Time Operating System"

• "NuttX for Star64 JH7110 SBC"

• "NuttX for Ox64 BL808 SBC"

• "NuttX for Oz64 SG2000 SBC"

• "Rolling to RISC-V"

Apache NuttX RTOS is now built and tested daily on QEMU RISC-V...

• qemu-riscv-nsh64.yml: GitHub Actions Workflow

• qemu-riscv-nsh64.exp: Expect Script

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1. So we're moving from Arm64 to RISC-V?

   Yep! We have a fresh new opportunity to teach the RISC-V 64-bit Architecture from scratch.

   And hopefully RISC-V Devices will still be around after 8 years!

2. We're porting NuttX to a RISC-V Phone?

   Sadly there isn't a RISC-V Phone yet.

   Thus we'll port NuttX to a RISC-V Tablet instead: PineTab-V

3. But PineTab-V isn't shipping yet!

   That's OK, we'll begin by porting NuttX to the Star64 SBC

   Which runs on the same RISC-V SoC as PineTab-V: StarFive JH7110

   (Hopefully we have better docs and tidier code than the older Arm64 SoCs)

4. Hopping from Arm64 to RISC-V sounds like a major migration...

   Actually we planned for this one year ago.

   NuttX already runs OK on the (64-bit) QEMU RISC-V Emulator. (Pic below)

   So the migration might not be so challenging after all!