From 62e79d2c1ed6a52092b6912ccd477dd97b7c00e0 Mon Sep 17 00:00:00 2001 From: Shelley Chen Date: Fri, 4 Oct 2019 12:38:47 -0700 Subject: mb/google/hatch: Preserve MRC training data across FW update Add PRESERVE to UNIFIED_MRC_CACHE so that we don't retain the memory training data upon a FW update unless we need to. We have had users complaining that a 15 second memory training upon update makes them believe that their device is not booting, thus many of them hard resetting before bootup. BUG=b:142084637 BRANCH=None TEST=flash RW_SECTION_A, RW_SECTION_B, and WP_RO sections and make sure memory training doesn't occur on following bootup. Change-Id: Ia5eb228b1f665a8371982544723dab3dfc40d401 Signed-off-by: Shelley Chen Reviewed-on: https://review.coreboot.org/c/coreboot/+/35803 Reviewed-by: Angel Pons Reviewed-by: Tim Wawrzynczak Reviewed-by: Paul Fagerburg Tested-by: build bot (Jenkins) --- src/mainboard/google/hatch/chromeos.fmd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/mainboard/google/hatch') diff --git a/src/mainboard/google/hatch/chromeos.fmd b/src/mainboard/google/hatch/chromeos.fmd index 393ac808b5..45dbc81716 100644 --- a/src/mainboard/google/hatch/chromeos.fmd +++ b/src/mainboard/google/hatch/chromeos.fmd @@ -19,7 +19,7 @@ FLASH@0xfe000000 0x2000000 { RW_FWID_B@0x3dffc0 0x40 } RW_MISC@0x17c0000 0x40000 { - UNIFIED_MRC_CACHE@0x0 0x30000 { + UNIFIED_MRC_CACHE(PRESERVE)@0x0 0x30000 { RECOVERY_MRC_CACHE@0x0 0x10000 RW_MRC_CACHE@0x10000 0x20000 } -- cgit v1.2.3