google/chromeos: Add recovery module in vboot2

Add recovery module in vboot2 that checks if a recovery request is
pending and returns appropriate reason code:
1. Checks if recovery mode is initiated by EC.
2. Checks if recovery request is present in VBNV.
3. Checks if recovery request is present in handoff for post-cbmem
stages.
4. Checks if vboot verification is complete and looks up selected region
to identify if recovery is requested by vboot library.

BUG=chrome-os-partner:55431

Change-Id: I31e332a4d014a185df2434c3730954e08dc27281
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15800
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)

1 files changed, 6 insertions, 0 deletions

diff --git a/src/vendorcode/google/chromeos/vboot2/Makefile.inc b/src/vendorcode/google/chromeos/vboot2/Makefile.inc
index b0a3c125ab..31889e25a6 100644
--- a/src/vendorcode/google/chromeos/vboot2/Makefile.inc
+++ b/src/vendorcode/google/chromeos/vboot2/Makefile.inc
@@ -28,6 +28,12 @@ romstage-y += ../vboot_common.c
 ramstage-y += ../vboot_common.c
 postcar-y += ../vboot_common.c
 
+bootblock-y += recovery.c
+romstage-y += recovery.c
+ramstage-y += recovery.c
+verstage-y += recovery.c
+postcar-y += recovery.c
+
 bootblock-y += common.c
 libverstage-y += vboot_logic.c
 verstage-y += common.c