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samus: Disable self refresh and MRC cache on broadwell 

Add workarounds for power and/or lpddr3 issues on Broadwell SKU.

BUG=chrome-os-partner:29787,chrome-os-partner:29117
BRANCH=None
TEST=build and boot on samus

Original-Change-Id: If99346212c10ad6026250e48bedd916611e2cb8c
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/208154
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit c3ee57114315320b542f53645ffb168ad654b756)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ie28f3ad65000a627ba64486e0f16493e8101cef3
Reviewed-on: http://review.coreboot.org/8214
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Duncan Laurie 2014-07-15 13:40:21 -07:00 committed by Marc Jones
parent 515d3d2e2c
commit 6a342cb699
1 changed files with 10 additions and 0 deletions
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10
src/mainboard/google/samus/romstage.c
View File

@ -22,6 +22,7 @@
#include <console/console.h>
#include <string.h>
#include <ec/google/chromeec/ec.h>
#include <broadwell/cpu.h>
#include <broadwell/gpio.h>
#include <broadwell/pei_data.h>
#include <broadwell/pei_wrapper.h>
@ -54,6 +55,15 @@ void mainboard_romstage_entry(struct romstage_params *rp)
mainboard_fill_spd_data(&pei_data);
rp->pei_data = &pei_data;
/*
* Disable use of PEI saved data to work around memory issues.
*/
if (cpu_family_model() == BROADWELL_FAMILY_ULT) {
pei_data.disable_self_refresh = 1;
pei_data.disable_saved_data = 1;
}
/* Initalize memory */
romstage_common(rp);
/*