efi: Capsule update support
The EFI capsule mechanism allows data blobs to be passed to the EFI
firmware. This patch just introduces the main infrastruture for
interacting with the firmware.
Once a capsule has been passed to the firmware, the next reboot will
always be performed using the ResetSystem() EFI runtime service, which
may involve overriding the reboot type specified by reboot=. This
ensures the reset value returned by QueryCapsuleCapabilities() is used
to reset the system, which is required for the capsule to be processed.
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
5 files changed
