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elog: Add function to log boot reason in ChromeOS case

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This adds a generic helper function for adding boot reason in the
ChromeOS case. If vboot is enabled, it will use information passed
in via the vboot handoff table in cbmem to determine mode and
reason in the case of recovery.

BUG=chromium:373467
BRANCH=nyan
TEST=built along with follow-up CL and booted on Big under various
modes, verified entry was added to eventlog with "mosys eventlog list"
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: I50a7aa6d55eb46413fe9929e732d6eb18c758d4b
Reviewed-on: https://chromium-review.googlesource.com/199690
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
David Hendricks 2014-05-13 20:28:49 -07:00 • committed by chrome-internal-fetch
commit 961c0bd1dd
3 changed files with 60 additions and 0 deletions
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1
src/vendorcode/google/chromeos/Makefile.inc
View file

@ -24,6 +24,7 @@ ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += vbnv_cmos.c
romstage-$(CONFIG_ARCH_ROMSTAGE_ARM) += vbnv_ec.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_ARM) += vbnv_ec.c
romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += vboot.c
ramstage-$(CONFIG_ELOG) += elog.c
ramstage-y += gnvs.c
romstage-y += fmap.c
ramstage-y += fmap.c

4
src/vendorcode/google/chromeos/chromeos.h
View file

@ -48,11 +48,15 @@ int vboot_skip_display_init(void);
/* functions implemented in vboot.c */
void init_chromeos(int bootmode);
/* functions implemented in elog.c */
void elog_add_boot_reason(void);
#else
static inline int developer_mode_enabled(void) { return 0; }
static inline int recovery_mode_enabled(void) { return 0; }
static inline int vboot_skip_display_init(void) { return 0; }
static inline void init_chromeos(int bootmode) { }
static inline void elog_add_boot_reason(void) { return; }
#endif /* CONFIG_CHROMEOS */
struct romstage_handoff;

55
src/vendorcode/google/chromeos/elog.c Normal file
View file

@ -0,0 +1,55 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#include <cbmem.h>
#include <console/console.h>
#include <elog.h>
#include <vendorcode/google/chromeos/chromeos.h>
#if CONFIG_VBOOT_VERIFY_FIRMWARE
#include "vboot_handoff.h"
#include <vboot_struct.h>
#endif
void elog_add_boot_reason(void)
{
if (developer_mode_enabled()) {
elog_add_event(ELOG_TYPE_CROS_DEVELOPER_MODE);
printk(BIOS_DEBUG, "%s: Logged dev mode boot\n", __func__);
} else if (recovery_mode_enabled()) {
u8 reason = 0;
#if CONFIG_VBOOT_VERIFY_FIRMWARE
struct vboot_handoff *vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
reason = get_recovery_mode_from_vbnv();
if (vbho && !reason) {
VbSharedDataHeader *sd = (VbSharedDataHeader *)
vbho->shared_data;
reason = sd->recovery_reason;
}
#endif
elog_add_event_byte(ELOG_TYPE_CROS_RECOVERY_MODE,
reason ? reason : ELOG_CROS_RECOVERY_MODE_BUTTON);
printk(BIOS_DEBUG, "%s: Logged recovery mode boot, "
"reason: 0x%02x\n", __func__, reason);
} else {
printk(BIOS_DEBUG, "%s: Normal mode boot, nothing "
"interesting to log\n", __func__);
}
}