Change in coreboot[master]: verstage: Add debug print when returning from verstage

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/52086 )

Change subject: verstage: Add debug print when returning from verstage
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verstage: Add debug print when returning from verstage

RETURN_FROM_VERSTAGE is a somewhat tricky construct that we don't
normally do otherwise in coreboot. While it works remarkably well in
general, new development can lead to unintentional interactions with
confusing results. This patch adds a debug print to the verstage right
before returning to the bootblock so that it's obvious this happens,
because otherwise in some cases the last printout in the verstage is
about some TPM commands which can be misleading when execution hangs
after that point.

Signed-off-by: Julius Werner 
Change-Id: I9ca68a32d7a50c95d9a6948d35816fee583611bc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52086
Reviewed-by: Furquan Shaikh 
Reviewed-by: Aaron Durbin 
Tested-by: build bot (Jenkins) 
---
M src/security/vboot/verstage.c
1 file changed, 1 insertion(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Aaron Durbin: Looks good to me, approved
  Furquan Shaikh: Looks good to me, approved

diff --git a/src/security/vboot/verstage.c b/src/security/vboot/verstage.c
index d2a9705..d785e0e 100644
--- a/src/security/vboot/verstage.c
+++ b/src/security/vboot/verstage.c
@@ -19,6 +19,7 @@

if (CONFIG(VBOOT_RETURN_FROM_VERSTAGE)) {
    	verstage_main();
+		printk(BIOS_DEBUG, "VBOOT: Returning from verstage.\n");
    } else {
    	run_romstage();
    	hlt();