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 <gaumless@gmail.com>
Change-Id: If3b73a3159ac8ac9ab08c6ff705b0ca289ab453c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
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