Re: EFI Secure boot default keys

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

On Wed, Jun 28, 2023 at 04:26:58PM +0000, Neil Jones wrote:
> Please can someone describe the format of the file needed for the default / built-in EFI secure boot keys (ubootefi.var)
> 
> The only docs I have found suggest its best to enroll the keys from within u-boot onto some removable media, then copy this off and use this as the default, this is not very helpful and doesn't work for me:
> 
> => fatload mmc 0:1 ${loadaddr} PK.aut
> 2053 bytes read in 18 ms (111.3 KiB/s)
> => setenv -e -nv -bs -rt -at -i ${loadaddr}:$filesize PK
> setenv - set environment variables
> 
> Usage:
> setenv setenv [-f] name value ...
>     - [forcibly] set environment variable 'name' to 'value ...'
> setenv [-f] name
>     - [forcibly] delete environment variable 'name'
> 
> my setenv doesn't support all the extra switches ? This is with 2022.04, all other EFI options seem to be in this release and I can boot unsigned EFI images ok.

Please turn on CONFIG_CMD_NVEDIT_EFI when building your U-Boot.

This option was disabled by the commit:
        commit 3b728f8728fa (tag: efi-2020-01-rc1)
        Author: Heinrich Schuchardt <xypron.glpk@gmx.de>
        Date:   Sun Oct 6 15:44:22 2019 +0200

            cmd: disable CMD_NVEDIT_EFI by default

The binary size of efi has grown much since in the past, though.

-Takahiro Akashi

> Cheers,
> 
> Neil
> 
> 
>