On 2/16/26 11:31, Shakhrukh Shakirov wrote:
Hi guys,
I need consultation regarding U-BOOT, how to realize following on Raspberry pi
5:
We have 1 SD card which stores: U-BOOT, OS1, OS2, OS config
So UBOOT starts OS1 with OS config.
From OS1 I can upgrade OS2, and change boot orders (so it will run not OS1,
instead will run OS2 with OS config).
From OS2 I can update firmware of OS1.
In case of failure of OS1 or OS2, it will run other OS version.
With who can I consult and what would be the rate?
Thanks in advance.
Hello Shakrush,
The Raspberry Pi has a firmware that supports A/B booting without
needing U-Boot, see
https://www.raspberrypi.com/documentation/computers/config_txt.html#example-update-flow-for-ab-booting
E.g. Ubuntu 26.04 uses this when updating the Linux kernel.
If you don't have any specific requirement that needs U-Boot (like
loading the kernel via HTTP), I would go for the Raspberry firmware
solution.
Best regards
Heinrich
