Duncan Laurie cf4fc17903 Log device path into CMOS during probe stages ... One of the most common hangs during coreboot execution is during ramstage device init steps. Currently there are a set of (somewhat misleading) post codes during this phase which give some indication as to where execution stopped, but it provides no information on what device was actually being initialized at that point. This uses the new CMOS "extra" log banks to store the encoded device path of the device that is about to be touched by coreboot. This way if the system hangs when talking to the device there will be some indication where to investigate next. BUG=chrome-os-partner:19980 BRANCH=none TEST=manual: interrupted boot with reset button and gathered the eventlog after several test runs: 26 | 2013-06-10 10:32:48 | System boot | 120 27 | 2013-06-10 10:32:48 | Last post code in previous boot | 0x75 | Device Initialize 28 | 2013-06-10 10:32:48 | Extra info from previous boot | PCI | 00:16.0 29 | 2013-06-10 10:32:48 | Reset Button 30 | 2013-06-10 10:32:48 | System Reset Change-Id: I6045bd4c384358b8a4e464eb03ccad639283939c Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/58105		2013-06-10 18:08:24 -07:00
..
i8254.h	Drop prototype guarding for romcc	2013-05-10 11:55:20 -07:00
i8259.h	GPLv2 notice: Unify all files to just use one space in »MA 02110-1301«	2013-03-01 10:16:08 +01:00
isa-dma.h	- Bump the LinuxBIOS major version	2004-10-21 10:44:08 +00:00
keyboard.h	Remove nonsensical wrapper for function in	2010-02-23 20:31:37 +00:00
mc146818rtc.h	Log device path into CMOS during probe stages	2013-06-10 18:08:24 -07:00
tpm.h	Add TPM support to coreboot	2012-03-30 02:04:20 +02:00
vga.h	GPLv2 notice: Unify all files to just use one space in »MA 02110-1301«	2013-03-01 10:16:08 +01:00
vga_io.h	GPLv2 notice: Unify all files to just use one space in »MA 02110-1301«	2013-03-01 10:16:08 +01:00