Apache NuttX RTOS on Sophgo SG2000 RISC-V SoC (Milk-V Duo S SBC)
But there’s a quicker way: Boot NuttX over the Network, thanks to U-Boot Bootloader and TFTP (Trivial File Transfer Protocol)
SG2000 UART0 Controller is at 0x0414_0000 (previous section). To print something, we write to the UART Output Register at that address: bl808_head.S
See the “123”? That’s proof that our NuttX Boot Code is actually running on SG2000 and Milk-V Duo S. We port some more…
After fixing the Interrupt Controller and UART Interrupts: Our Final NuttX Image boots all the way to NuttX Shell! (Pic above)
We’re eagerly awaiting the new 64-bit RISC-V SBCs based on the Sophgo SG2000 RISC-V SoC. Meanwhile we’re all prepped and ready…
Many Thanks to my GitHub Sponsors (and the awesome NuttX Community) for supporting my work! This article wouldn’t have been possible without your support.
SG2000 uses a RAM Disk because it runs in NuttX Kernel Mode (instead of the typical Flat Mode). This means we can do Memory Protection and Virtual Memory for Apps. (Pic above)
