i.MX ProcessorsのトピックSPL to u-boot

SPL to u-boot

Arm7 — Wed, 17 May 2023 16:11:34 GMT

Hello,

Is there a way to pass info from SPL to u-boot ?

In SPL I read a fuse and I have to pass it to u-boot.

Thank you!

Re: SPL to u-boot

Harvey021 — Mon, 22 May 2023 03:25:06 GMT

Hi @Arm7

The uboot will query storage first, if there is no env, it will directly use the env at compile time.

Best regards

Harvey

Re: SPL to u-boot

dtony — Tue, 23 May 2023 07:01:45 GMT

Maybe you can try HANDOFF

config HANDOFF
bool "Pass hand-off information from SPL to U-Boot proper"
depends on BLOBLIST
help
It is useful to be able to pass information from SPL to U-Boot
proper to preserve state that is known in SPL and is needed in U-Boot.
Enable this to locate the handoff information in U-Boot proper, early
in boot. It is available in gd->handoff. The state state is set up
in SPL (or TPL if that is being used).