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panic: Send host event on panic detect

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If a panic caused us to reboot, send a host event to notify the AP.

BUG=chrome-os-partner:36985
TEST=Manual on Samus. Trigger EC panic, verify that "Panic Reset in
previous boot" is seen in /var/log/eventlog.
BRANCH=Samus

Change-Id: Icf0d00a8cfc7aa788f3ceadd65fe3139f40df503
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/252410
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
This commit is contained in:
Shawn Nematbakhsh
2015-02-23 15:26:11 -08:00
committed by ChromeOS Commit Bot
parent accd0da789
commit a8628526a3
3 changed files with 22 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
common/panic_output.c
View File

@@ -115,6 +115,20 @@ struct panic_data *panic_get_data(void)
return pdata_ptr->magic == PANIC_DATA_MAGIC ? pdata_ptr : NULL;
}
static void panic_init(void)
{
#ifdef CONFIG_HOSTCMD_EVENTS
struct panic_data *addr = panic_get_data();
/* Notify host of new panic event */
if (addr && !(addr->flags & PANIC_DATA_FLAG_OLD_HOSTEVENT)) {
host_set_single_event(EC_HOST_EVENT_PANIC);
addr->flags |= PANIC_DATA_FLAG_OLD_HOSTEVENT;
}
#endif
}
DECLARE_HOOK(HOOK_INIT, panic_init, HOOK_PRIO_DEFAULT);
#ifdef CONFIG_CMD_STACKOVERFLOW
static void stack_overflow_recurse(int n)
{

3
include/ec_commands.h
View File

@@ -279,6 +279,9 @@ enum host_event_code {
/* Battery Status flags have changed */
EC_HOST_EVENT_BATTERY_STATUS = 23,
/* EC encountered a panic, triggering a reset */
EC_HOST_EVENT_PANIC = 24,
/*
* The high bit of the event mask is not used as a host event code. If
* it reads back as set, then the entire event mask should be

8
include/panic.h
View File

@@ -62,11 +62,13 @@ struct panic_data {
/* Flags for panic_data.flags */
/* panic_data.frame is valid */
#define PANIC_DATA_FLAG_FRAME_VALID (1 << 0)
#define PANIC_DATA_FLAG_FRAME_VALID (1 << 0)
/* Already printed at console */
#define PANIC_DATA_FLAG_OLD_CONSOLE (1 << 1)
#define PANIC_DATA_FLAG_OLD_CONSOLE (1 << 1)
/* Already returned via host command */
#define PANIC_DATA_FLAG_OLD_HOSTCMD (1 << 2)
#define PANIC_DATA_FLAG_OLD_HOSTCMD (1 << 2)
/* Already reported via host event */
#define PANIC_DATA_FLAG_OLD_HOSTEVENT (1 << 3)
/**
* Write a string to the panic reporting device