efi_loader: Allow capsule update on-disk without checking OsIndications
Although U-Boot supports capsule update on-disk, it's lack of support for
SetVariable at runtime prevents applications like fwupd from using it.
In order to perform the capsule update on-disk the spec says that the OS
must copy the capsule to the \EFI\UpdateCapsule directory and set a bit in
the OsIndications variable. The firmware then checks for the
EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED bit in OsIndications
variable, which is set by the submitter to trigger processing of the
capsule on the next reboot.
Let's add a config option which ignores the bit and just relies on the
capsule being present. Since U-Boot deletes the capsule while processing
it, we won't end up applying it multiple times.
Note that this is allowed for all capsules. In the future, once
authenticated capsules are fully supported, we can limit the functionality
to those only.
Signed-off-by: apalos <ilias.apalodimas@linaro.org>
Reword Kconfig description.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 684adfb..156b391 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -137,6 +137,16 @@
under a specific directory on UEFI system partition instead of
via UpdateCapsule API.
+config EFI_IGNORE_OSINDICATIONS
+ bool "Ignore OsIndications for CapsuleUpdate on-disk"
+ depends on EFI_CAPSULE_ON_DISK
+ default n
+ help
+ There are boards where U-Boot does not support SetVariable at runtime.
+ Select this option if you want to use the capsule-on-disk feature
+ without setting the EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED
+ flag in variable OsIndications.
+
config EFI_CAPSULE_ON_DISK_EARLY
bool "Initiate capsule-on-disk at U-Boot boottime"
depends on EFI_CAPSULE_ON_DISK