[S] Change in coreboot[master]: vc/google: Add and use POST_CODE_CLEAR definition

[Martin L Roth (Code Review)]

Martin L Roth has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/71592 )

Change subject: vc/google: Add and use POST_CODE_CLEAR definition
......................................................................

vc/google: Add and use POST_CODE_CLEAR definition

The CR50 code clears the post code value.  Add this as a #define.

Signed-off-by: Martin Roth 
Change-Id: If3b73a3159ac8ac9ab08c6ff705b0ca289ab453c
---
M src/commonlib/include/commonlib/console/post_codes.h
M src/vendorcode/google/chromeos/cr50_enable_update.c
2 files changed, 20 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/71592/1

diff --git a/src/commonlib/include/commonlib/console/post_codes.h b/src/commonlib/include/commonlib/console/post_codes.h
index d838815..ef296bd 100644
--- a/src/commonlib/include/commonlib/console/post_codes.h
+++ b/src/commonlib/include/commonlib/console/post_codes.h
@@ -28,6 +28,12 @@
 #define POST_CODES_H

/**
+ * \brief Not an actual post-code - used to clear port80h
+ *
+ */
+#define POST_CODE_CLEAR				0x00
+
+/**
  * \brief  Entry into 'crt0.s'. reset code jumps to here
  *
  * First instruction that gets executed after the reset vector jumps.
diff --git a/src/vendorcode/google/chromeos/cr50_enable_update.c b/src/vendorcode/google/chromeos/cr50_enable_update.c
index 9ac33a5..6beea91 100644
--- a/src/vendorcode/google/chromeos/cr50_enable_update.c
+++ b/src/vendorcode/google/chromeos/cr50_enable_update.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

#include <bootstate.h>
+#include <commonlib/console/post_codes.h>
 #include <console/console.h>
 #include <ec/google/chromeec/ec.h>
 #include <elog.h>
@@ -133,7 +134,7 @@
    mainboard_prepare_cr50_reset();

/* clear current post code avoid chatty eventlog on subsequent boot*/
-	post_code(0);
+	post_code(POST_CODE_CLEAR);

/*
     * Older Cr50 firmware doesn't support the timeout parameter for the