Lup Yuen Lee 李立源 @lupyuen@qoto.org

🤔 Chocolate Banana Sourdough with Baked Beans

Here's how we modify Apache #NuttX RTOS to load the Initial RAM Disk (initrd) ... On #Star64 JH7110 #RISCV SBC

Source: https://github.com/lupyuen/nuttx-star64#modify-nuttx-star64-to-load-initial-ram-disk

#RISCV Code runs at 3 Privilege Levels: Machine, Supervisor or User

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#risc-v-privilege-levels

😂 Semihosting Horror Story

Source: https://lupyuen.codeberg.page/articles/semihost.html

Apache #NuttX RTOS fails to get the Hart ID (CPU ID) ... On #Star64 JH7110 #RISCV SBC

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#nuttx-fails-to-get-hart-id

Now we modify Apache #NuttX RTOS to load the Initial RAM Disk (initrd) ... On #Star64 JH7110 #RISCV SBC

Source: https://github.com/lupyuen/nuttx-star64#modify-nuttx-star64-to-load-initial-ram-disk

Here's how we modify Apache #NuttX RTOS for #RISCV QEMU ... To load an Initial RAM Disk (initrd)

Source: https://github.com/lupyuen/nuttx-star64#modify-nuttx-qemu-to-load-initial-ram-disk

Apache #NuttX RTOS boots a tiny bit on #Star64 JH7110 #RISCV SBC 🎉 ... And crashes

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#boot-nuttx-on-star64

Watch what happens when we boot Apache #NuttX RTOS on #Star64 JH7110 #RISCV SBC

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#boot-nuttx-on-star64

Let's modify Apache #NuttX RTOS for #RISCV QEMU ... To load an Initial RAM Disk (initrd)

Source: https://github.com/lupyuen/nuttx-star64#modify-nuttx-qemu-to-load-initial-ram-disk

Apache #NuttX RTOS on #RISCV QEMU ... Reads the Apps Filesystem over Semihosting

Source: https://github.com/lupyuen/nuttx-star64#qemu-semihosting-in-nuttx

Magical Start Address of Apache #NuttX RTOS ... On #Star64 JH7110 #RISCV SBC

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#start-address-of-nuttx-kernel

To boot Apache #NuttX RTOS on #Star64 JH7110 SBC ... We need this #RISCV Linux Kernel Header

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#risc-v-linux-kernel-header

#NuttX RAM Disk for #RISCV LiteX Arty-A7 ... Here's how it works

Source: https://github.com/lupyuen/nuttx-star64#initial-ram-disk-for-litex-arty-a7

All about the UART Controller on #Star64 JH7110 #RISCV SBC

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#uart-controller-on-star64

Time to talk about Apache #NuttX RTOS on #PinePhone 👍

Source: https://lupyuen.github.io/nuttx

Printing to QEMU Console ... In #RISCV Assembly

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#print-to-qemu-console

Apache #NuttX RTOS loads the Apps Filesystem over QEMU Semihosting ... Let's change this for #Star64 JH7110 #RISCV SBC

Source: https://github.com/lupyuen/nuttx-star64#nuttx-apps-filesystem

Here's how we print to the Serial Console on QEMU #RISCV Emulator ... By writing to the UART Address

Article: https://lupyuen.codeberg.page/articles/nuttx2.html#print-to-qemu-console

Apache #NuttX RTOS for #Star64 JH7110 SBC ... Boots with Initial RAM Disk 🎉

Source: https://github.com/lupyuen/nuttx-star64#modify-nuttx-star64-to-load-initial-ram-disk