sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Extend CMOS POST code logging to store extra data

Browse Source 
This can be used to indicate sub-state within a POST
code range which can assist in debugging BIOS hangs.

For example this can be used to indicate which device
is about to be initialized so if the system hangs
while talking to that device it can be identified.

Change-Id: I2f8155155f09fe9e242ebb7204f0b5cba3a1fa1e
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/58104
Reviewed-on: http://review.coreboot.org/4229
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Duncan Laurie
2013-06-10 10:21:41 -07:00
committed by Stefan Reinauer
parent e807c34a5e
commit d5686fe23b
6 changed files with 61 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/console/post.c
View File

@ -25,6 +25,9 @@
#include <pc80/mc146818rtc.h>
#include <smp/spinlock.h>
#endif
#if CONFIG_CMOS_POST_EXTRA
#include <device/device.h>
#endif
#include <elog.h>
/* Write POST information */
@ -51,6 +54,9 @@ DECLARE_SPIN_LOCK(cmos_post_lock)
void cmos_post_log(void)
{
u8 code = 0;
#if CONFIG_CMOS_POST_EXTRA
u32 extra = 0;
#endif
spin_lock(&cmos_post_lock);
@ -58,9 +64,15 @@ void cmos_post_log(void)
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
case CMOS_POST_BANK_0_MAGIC:
code = cmos_read(CMOS_POST_BANK_1_OFFSET);
#if CONFIG_CMOS_POST_EXTRA
extra = cmos_read32(CMOS_POST_BANK_1_EXTRA);
#endif
break;
case CMOS_POST_BANK_1_MAGIC:
code = cmos_read(CMOS_POST_BANK_0_OFFSET);
#if CONFIG_CMOS_POST_EXTRA
extra = cmos_read32(CMOS_POST_BANK_0_EXTRA);
#endif
break;
}
@ -78,9 +90,31 @@ void cmos_post_log(void)
"in previous boot: 0x%02x\n", code);
#if CONFIG_ELOG
elog_add_event_word(ELOG_TYPE_LAST_POST_CODE, code);
#if CONFIG_CMOS_POST_EXTRA
if (extra)
elog_add_event_dword(ELOG_TYPE_POST_EXTRA, extra);
#endif
#endif
}
}
#if CONFIG_CMOS_POST_EXTRA
void post_log_extra(u32 value)
{
spin_lock(&cmos_post_lock);
switch (cmos_read(CMOS_POST_BANK_OFFSET)) {
case CMOS_POST_BANK_0_MAGIC:
cmos_write32(CMOS_POST_BANK_0_EXTRA, value);
break;
case CMOS_POST_BANK_1_MAGIC:
cmos_write32(CMOS_POST_BANK_1_EXTRA, value);
break;
}
spin_unlock(&cmos_post_lock);
}
#endif /* CONFIG_CMOS_POST_EXTRA */
#endif /* !__PRE_RAM__ */
static void cmos_post_code(u8 value)