How to replace kernel without building entire upgrade_image GPT

Chip Platform Rockchip
1

I have compiled a new kernel with some patches and I have not been able to just swap kernels like before with the new GPT system. I have the parameter-recovery.text and parameter-ubuntu.txt files and boot.img, but am not sure how to proceed. I get an error message about “Config file not found DMA reset” I’ve tried writing the .img to the SD card with

dd if=boot.img of=/dev/sdb3

Was unsuccessful. Also noticed that to get the SD card back to bootable I had to re-write the whole beginning of the SD card starting from 0 count=24575 instead of just sdb3 to make it bootable again.

Can anyone shed some light on this?

2

I did end up making it work by following the instructions on page http://wiki.t-firefly.com/en/Firefly-RK3399/linux_compile_gpt.html and substituting rootfs for a DD image of the rootfs on the card where I was trying to update the kernel and running ./build.sh sdbootimg but still, quite a bit of overhead just to build the kernel.

Also the kernel compile was successful on the board itself with some tweaks but I’m not sure it would have worked, maybe cross-compiling is more reliable. I guess I can just leave the sdk on my local computer and make the changes there, re-running the scripts to re-build the kernel in the future unless someone has a quick and easy way to update the kernel

3

you could check the build.sh to see how the firmware is built,
then you’ll have the idea of how to replace the kernel image only.

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