diff options
| author | Jamie Chen <jamie.chen@intel.com> | 2020-04-16 01:42:51 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-05-13 12:04:32 +0000 |
| commit | 741099239194b01ef153a7b41a9d8389b0b06f8e (patch) | |
| tree | a3856989ebd1b74fa2e66d5590c53f5192e1d82c /src/mainboard/google/hatch/chromeos-spd.fmd | |
| parent | 92ba06fb3e6a5ba089305b6739b1b4344984ba37 (diff) | |
mb/google/puff: add a region to cache SPD data
This patch adds a SPI rom region RW_SPD_CACHE on Puff and it can be used
on spd_cache to reduce reading SPD data from SODIMM by smbus. It's for
saving the boot time and it can be used to trigger MRC retraining when
memory DIMM is changed.
BUG=b:146457985
BRANCH=None
TEST=Build puff successfully and verified below two items.
1. To change memory DIMM can trigger retraining.
2. one DIMM save the boot time : 158ms
two DIMM save the boot time : 265ms
Change-Id: I8d07fddf113a767d62394cb31e33b56f22f74351
Signed-off-by: Jamie Chen <jamie.chen@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40415
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Diffstat (limited to 'src/mainboard/google/hatch/chromeos-spd.fmd')
| -rw-r--r-- | src/mainboard/google/hatch/chromeos-spd.fmd | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/mainboard/google/hatch/chromeos-spd.fmd b/src/mainboard/google/hatch/chromeos-spd.fmd new file mode 100644 index 0000000000..37bc1bd832 --- /dev/null +++ b/src/mainboard/google/hatch/chromeos-spd.fmd @@ -0,0 +1,48 @@ +FLASH@0xfe000000 0x2000000 { + SI_ALL@0x0 0x400000 { + SI_DESC@0x0 0x1000 + SI_ME@0x1000 0x3ff000 + } + SI_BIOS@0x400000 0x1c00000 { + # Place RW_LEGACY at the start of BIOS region such that the rest + # of BIOS regions start at 16MiB boundary. Since this is a 32MiB + # SPI flash only the top 16MiB actually gets memory mapped. + RW_LEGACY(CBFS)@0x0 0x1000000 + RW_SECTION_A@0x1000000 0x3e0000 { + VBLOCK_A@0x0 0x10000 + FW_MAIN_A(CBFS)@0x10000 0x3cffc0 + RW_FWID_A@0x3dffc0 0x40 + } + RW_SECTION_B@0x13e0000 0x3e0000 { + VBLOCK_B@0x0 0x10000 + FW_MAIN_B(CBFS)@0x10000 0x3cffc0 + RW_FWID_B@0x3dffc0 0x40 + } + RW_MISC@0x17c0000 0x40000 { + UNIFIED_MRC_CACHE(PRESERVE)@0x0 0x30000 { + RECOVERY_MRC_CACHE@0x0 0x10000 + RW_MRC_CACHE@0x10000 0x20000 + } + RW_ELOG(PRESERVE)@0x30000 0x4000 + RW_SHARED@0x34000 0x4000 { + SHARED_DATA@0x0 0x2000 + VBLOCK_DEV@0x2000 0x2000 + } + RW_VPD(PRESERVE)@0x38000 0x2000 + RW_NVRAM(PRESERVE)@0x3a000 0x5000 + RW_SPD_CACHE(PRESERVE)@0x3f000 0x1000 + } + # Make WP_RO region align with SPI vendor + # memory protected range specification. + WP_RO@0x1800000 0x400000 { + RO_VPD(PRESERVE)@0x0 0x4000 + RO_SECTION@0x4000 0x3fc000 { + FMAP@0x0 0x800 + RO_FRID@0x800 0x40 + RO_FRID_PAD@0x840 0x7c0 + GBB@0x1000 0x3000 + COREBOOT(CBFS)@0x4000 0x3f8000 + } + } + } +} |