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drivers/intel/fsp2_0: Ensure EC is in right mode before memory init 

If EC_GOOGLE_CHROMEEC is enabled, ensure that the EC is in correct mode
before running memory init. This saves additional memory training
required in recovery path because of reboot later in ramstage.

BUG=chrome-os-partner:54245

Change-Id: Ic71c054afdcd0001cea95563fe513783b56f3e60
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/16034
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh 2016-08-02 14:04:59 -07:00
parent 44d0ddcc81
commit 35cca5a923
1 changed files with 9 additions and 0 deletions
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9
src/drivers/intel/fsp2_0/memory_init.c
View File

@ -17,6 +17,7 @@
#include <cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include <elog.h>
#include <fsp/api.h>
#include <fsp/util.h>
@ -295,6 +296,14 @@ void fsp_memory_init(bool s3wake)
if (IS_ENABLED(CONFIG_ELOG_BOOT_COUNT) && !s3wake)
boot_count_increment();
/*
* Before doing any memory init/training, ensure that the EC is in the
* right mode. This saves an additional memory training when in recovery
* mode.
*/
if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC))
google_chromeec_early_init();
if (cbfs_boot_locate(&file_desc, name, NULL)) {
printk(BIOS_CRIT, "Could not locate %s in CBFS\n", name);
die("FSPM not available!\n");