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Hung-Te Lin 342f087249 Google/Snow: Temporary fix for resume failure. 
The DDR3 memory initialization (with "mem_reset" set on normal boot) will cause
resume to be unstable, especially when X is running. System may show X screen
for few seconds, then crash randomly and unable to recover - although text
console may still work for a while.  Probably caused by corrupted memory pages.

'mem_reset' (which refers to RESET# in DDR3 spec) should be enabled according
to DDR3 spec. But it seems that on Exynos 5, memory can be initialized without
setting mem_reset for both normal boot and resume - at least no known failure
cases are found yet.  So this can be a temporary workaround.

Verified by booting a Google/Snow device with X Window and ChromeOS, entering
browser session with fancy web pages, closing LID to suspend for 5 seconds, then
re-opening to resume.  Suspend/resume worked as expected.

Also tried the "suspend_stress_test" with X running and finished 100 iterations
of suspend/resume test without failure.

Change-Id: I7185b362ce8b545fe77b35a552245736c89d465e
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3148
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-04-30 19:43:22 -07:00
..
a-trend x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
aaeon GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
abit x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
advansus x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
advantech x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
amd Partially revert "AMD Inagua: broadcom.c: Add missing prototype for broadcom_init()" 2013-04-03 19:29:30 +02:00
aopen x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
arima x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
artecgroup x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
asi x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
asrock ASRock E350M1: Kconfig: Remove WARNINGS_ARE_ERRORS to treat warnings as errors 2013-04-03 17:20:03 +02:00
asus AMD Hudson boards: Use hudson.h for pm_ioread and delete pmio.h 2013-03-30 14:18:27 +01:00
avalue x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
axus x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
azza x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
bachmann OT200: reset MFGTP7 (backlight pwm) 2013-03-14 16:32:45 +01:00
bcom x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
bifferos x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
biostar x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
broadcom x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
compaq x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
digitallogic x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
eaglelion x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
ecs GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
emulation x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
getac smi: Update mainboard_smi_gpi() to have 32bit argument 2013-04-30 13:47:43 -07:00
gigabyte x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
google Google/Snow: Temporary fix for resume failure. 2013-04-30 19:43:22 -07:00
hp x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
ibase Unify and clean up remaining INT15 handlers 2013-04-25 18:13:05 -07:00
ibm x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
iei x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
intel Unify and clean up remaining INT15 handlers 2013-04-25 18:13:05 -07:00
iwave x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
iwill x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
jetway x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
kontron Unify and clean up remaining INT15 handlers 2013-04-25 18:13:05 -07:00
lanner x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
lenovo smi: Update mainboard_smi_gpi() to have 32bit argument 2013-04-30 13:47:43 -07:00
lippert FrontRunner/Toucan-AF: Use SPD read code from F14 wrapper 2013-03-22 01:05:46 +01:00
mitac GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
msi x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
nec GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
newisys x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
nokia x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
nvidia x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
pcengines x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
rca x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
roda smi: Update mainboard_smi_gpi() to have 32bit argument 2013-04-30 13:47:43 -07:00
samsung smi: Update mainboard_smi_gpi() to have 32bit argument 2013-04-30 13:47:43 -07:00
siemens x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
soyo x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
sunw x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
supermicro x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
technexion x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
technologic x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
televideo x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
thomson Unify and clean up remaining INT15 handlers 2013-04-25 18:13:05 -07:00
traverse GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
tyan x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
via x86: Unify arch/io.h and arch/romcc_io.h 2013-03-22 00:00:09 +01:00
winent GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
wyse GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« 2013-03-01 10:16:08 +01:00
Kconfig Add minimal mainboard support for snow 2012-12-12 06:01:26 +01:00