There is no CONFIG_UEFI_SECURE_BOOT, and there was never any.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
by verifying a signature (or message digest) of image with certificates.
This feature on U-Boot is enabled with::
- CONFIG_UEFI_SECURE_BOOT=y
+ CONFIG_EFI_SECURE_BOOT=y
To make the boot sequence safe, you need to establish a chain of trust;
In UEFI secure boot the chain trust is defined by the following UEFI variables