[XS] Change in coreboot[main]: vboot: Add catchall recovery reason for unspecified phase 4 errors

[Julius Werner (Code Review)]

Attention is currently required from: Yu-Ping Wu.

Hello Yu-Ping Wu,

I'd like you to do a code review.
Please visit

https://review.coreboot.org/c/coreboot/+/78821?usp=email

to review the following change.

Change subject: vboot: Add catchall recovery reason for unspecified phase 4 errors
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vboot: Add catchall recovery reason for unspecified phase 4 errors

The code for "phase 4" of firmware verification currently only sets a
recovery reason when there's an actual hash mismatch detected in
vb2api_check_hash_get_digest(). This is the most likely way how this
section of code can fail but not the only one. If any other unexpected
issue occurs, we should still set a recovery reason rather than just
reboot and risk an infinite boot loop.

This patch adds a catchall recovery reason for any error code that falls
out of this block of code. If a more specific recovery reason had
already been set beforehand, we'll continue to use that -- if not, we'll
set VB2_RECOVERY_FW_GET_FW_BODY.

Change-Id: If00f8f8a5d17aa113e0325aad58d367f244aca49
Signed-off-by: Julius Werner 
---
M src/security/vboot/vboot_logic.c
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/78821/1

diff --git a/src/security/vboot/vboot_logic.c b/src/security/vboot/vboot_logic.c
index 11983b9..93a188c 100644
--- a/src/security/vboot/vboot_logic.c
+++ b/src/security/vboot/vboot_logic.c
@@ -374,7 +374,7 @@
    }

if (rv)
-		vboot_save_and_reboot(ctx, rv);
+		vboot_fail_and_reboot(ctx, VB2_RECOVERY_FW_GET_FW_BODY, rv);
    vboot_save_data(ctx);

/* Only extend PCRs once on boot. */