Re: [PATCH] efi: loader: accept NULL DevicePath in LoadImage when SourceBuffer is given

[Sascha Hauer <s.hauer@pengutronix.de>]

On Wed, 26 Aug 2026 13:45:01 +0200, Ahmad Fatoum wrote:
> The UEFI specification only requires DevicePath when no SourceBuffer is
> given. Loading an image from memory with a NULL DevicePath is valid and
> results in a loaded image without device handle and file path. That's what
> EDK2 does and what the U-Boot code this was imported from does as well, as
> it ignores the result of efi_dp_split_file_path().
> 
> barebox on the other hand checks the result and as efi_dp_dup(NULL) returns
> NULL, LoadImage fails with the misleading EFI_OUT_OF_RESOURCES. This breaks
> chainloading from a barebox EFI payload running on top of the barebox EFI
> loader: the payload passes the device path of its own device handle, which
> it doesn't have when it was booted via QEMU's fw_cfg, so it passes NULL.
> 
> [...]

Applied, thanks!

[1/1] efi: loader: accept NULL DevicePath in LoadImage when SourceBuffer is given
      https://git.pengutronix.de/cgit/barebox/commit/?id=5e86781197ad (link may not be stable)

Best regards,
-- 
Sascha Hauer <s.hauer@pengutronix.de>