u-boot-brain/arch
Simon Glass d1cd045982 x86: Emit post codes in startup code for Chromebooks
On x86 it is common to use 'post codes' which are 8-bit hex values emitted
from the code and visible to the user. Traditionally two 7-segment displays
were made available on the motherboard to show the last post code that was
emitted. This allows diagnosis of a boot problem since it is possible to
see where the code got to before it died.

On modern hardware these codes are not normally visible. On Chromebooks
they are displayed by the Embedded Controller (EC), so it is useful to emit
them. We must enable this feature for the EC to see the codes, so add an
option for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2014-11-21 07:34:11 +01:00
..
arc kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
arm ARM: atmel: add sama5d4 xplained ultra board support 2014-11-17 08:47:18 -05:00
avr32 kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
blackfin Merge branch 'master' of git://git.denx.de/u-boot-blackfin 2014-11-10 16:25:28 -05:00
m68k kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
microblaze kconfig: add CONFIG_SUPPORT_SPL 2014-10-27 17:54:10 -04:00
mips MIPS: add .padding section to linker script 2014-11-01 18:18:05 +01:00
nds32 kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
nios2 kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
openrisc kconfig: remove redundant "string" type in arch and board Kconfigs 2014-09-13 16:43:55 -04:00
powerpc Merge branch 'master' of git://git.denx.de/u-boot-mpc5xxx 2014-11-19 23:17:13 -05:00
sandbox sandbox: init cli for -c 2014-11-07 16:27:05 -05:00
sh Merge branch 'master' of git://git.denx.de/u-boot-sh 2014-11-17 08:43:40 -05:00
sparc sparc: merge CONFIG_SYS_CPU and CONFIG_SYS_VENDOR defines 2014-11-04 15:01:38 -05:00
x86 x86: Emit post codes in startup code for Chromebooks 2014-11-21 07:34:11 +01:00
.gitignore .gitignore: drop include/asm/proc from ignore pattern 2014-06-19 11:18:54 -04:00
Kconfig kconfig: move CONFIG_USE_PRIVATE_LIBGCC to Kconfig 2014-10-23 13:19:09 -04:00