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ELOG: Refactor watchdog_tombstone 

The symbol watchdog_tombstone is not really about ChromeOS
but ELOG instead. This prepares for furher move of the
watchdog_tombstone implementation.

Change-Id: I8446fa1a395b2d17912a23b87b83277c80828874
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63300
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Kyösti Mälkki 2021-02-11 07:18:29 +02:00 committed by Felix Held
parent 24a20e4d21
commit 662353ac3e
4 changed files with 13 additions and 16 deletions
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1
src/include/symbols.h
View File

@ -76,6 +76,7 @@ DECLARE_REGION(pdpt)
DECLARE_OPTIONAL_REGION(opensbi)
DECLARE_OPTIONAL_REGION(bl31)
DECLARE_REGION(transfer_buffer)
DECLARE_OPTIONAL_REGION(watchdog_tombstone)
/* Returns true when pre-RAM symbols are known to the linker.
* (Does not necessarily mean that the memory is accessible.) */

1
src/vendorcode/google/chromeos/chromeos.h
View File

@ -11,6 +11,7 @@
/* functions implemented in watchdog.c */
void mark_watchdog_tombstone(void);
void reboot_from_watchdog(void);
bool reset_watchdog_tombstone(void);
#else
static inline void mark_watchdog_tombstone(void) { return; }
static inline void reboot_from_watchdog(void) { return; }

10
src/vendorcode/google/chromeos/symbols.h
View File

@ -1,10 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __CHROMEOS_SYMBOLS_H
#define __CHROMEOS_SYMBOLS_H
#include <symbols.h>
DECLARE_OPTIONAL_REGION(watchdog_tombstone)
#endif /* __CHROMEOS_SYMBOLS_H */

17
src/vendorcode/google/chromeos/watchdog.c
View File

@ -10,7 +10,6 @@
#include <symbols.h>
#include "chromeos.h"
#include "symbols.h"
#define WATCHDOG_TOMBSTONE_MAGIC 0x9d2f41a7
@ -21,11 +20,7 @@ static void elog_handle_watchdog_tombstone(void *unused)
if (CONFIG(CHROMEOS_USE_EC_WATCHDOG_FLAG))
flag |= google_chromeec_get_ap_watchdog_flag();
if (REGION_SIZE(watchdog_tombstone)) {
flag |= (read32(_watchdog_tombstone) ==
WATCHDOG_TOMBSTONE_MAGIC);
write32(_watchdog_tombstone, 0);
}
flag |= reset_watchdog_tombstone();
if (flag)
elog_add_event(ELOG_TYPE_ASYNC_HW_TIMER_EXPIRED);
@ -34,6 +29,16 @@ static void elog_handle_watchdog_tombstone(void *unused)
BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY,
elog_handle_watchdog_tombstone, NULL);
bool reset_watchdog_tombstone(void)
{
if (!REGION_SIZE(watchdog_tombstone))
return false;
bool flag = (read32(_watchdog_tombstone) == WATCHDOG_TOMBSTONE_MAGIC);
write32(_watchdog_tombstone, 0);
return flag;
}
void mark_watchdog_tombstone(void)
{
assert(REGION_SIZE(watchdog_tombstone));