s-matyukevich/raspberry-pi-os

Is it possible to boot up raspberry-pi-os from Uboot?

imilk23 opened this issue · 2 comments

imilk23 commented

I want to use tftpboot instead of copying the binary to sdcard each lesson so I curious that is there someone trying to boot up raspberry-pi-os from Uboot?

nicolasmesa commented

@rhett511 , I created a project to boot via UART with a few changes to the kernel in this project. I wrote a detailed blog post on what I did and mistakes I made along the way. I've made a few improvements since then. Feel free to take a look at the source.

I hope this helps.

imilk23 commented

Hi @nicolasmesa,
Thank you for responding to me.
However, I want to use u-boot instead of writing my own bootloader code.

I found the answer to this question.
U-boot finds the kernel image with the special format. And we can create it by mkimage tool that supported by u-boot:

MKIMAGE?=~/workspace/u-boot/tools/mkimage
$(MKIMAGE) -A arm64 -C none -O linux -T kernel -d $(BUILD_DIR)/kernel8.img -a 0x80000 -e 0x80000 $(BUILD_DIR)/kernel8.uimg

I close this issue.