[PATCH 2/6] efi_loader: Add device path related functions for initrd via Boot####

[Heinrich Schuchardt]

On 3/11/21 2:31 PM, Ilias Apalodimas wrote:
>> I am not referring to efidebug.
>>
>> The user can update EFI variables with any binary content using an EFI binary or OS functions.
>>
>> E.g. copy a binary file to the efi variables file system in Linux.
>
> Right, I was mostly thinking SetVariable which still goes through u-boot.
> Copying an entire file is possiible though I guess

dd if=foo
of=/sys/firmware/efi/efivars/Boot0123-8be4df61-93ca-11d2-aa0d-00e098032b8c

But Linux makes some consistency checks.

Best regards

Heinrich