diff options
| author | Wonkyu Kim <wonkyu.kim@intel.com> | 2023-06-12 16:44:07 -0700 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-07-11 12:15:25 +0000 |
| commit | 6d6831e5bad899137e07183f9517a5b801c4e47b (patch) | |
| tree | 3de45bbcab1601892c65eed4a79929328d1ed0ae | |
| parent | ccbfe76a707256a947477680c18ff22c24e7a06e (diff) | |
mb/google/rex: LZ4 compress ramstage instead of LZMA
for saving boot time, change ramstage compression from LZMA to LZ4.
Boot time saving is around 35ms (30-37ms) while SPI size impact is 230KB.
For detail, refer below.
Existing: LZMA(55.6 ms)
8:starting to load ramstage 894,519 (0)
15:starting LZMA decompress (ignore for x86) 903,556 (9,036)
16:finished LZMA decompress (ignore for x86) 949,997 (46,441)
9:finished loading ramstage 950,179 (182)
Changed: LZ4(17.8ms)
8:starting to load ramstage 900,876 (0)
17:starting LZ4 decompress (ignore for x86) 917,650 (16,774)
18:finished LZ4 decompress (ignore for x86) 918,690 (1,040)
9:finished loading ramstage 918,849 (158)
Size impact (73KB * 3 = 219KB)
fallback/ramstage 0x62940 stage 240281 LZ4 (405524 decompressed)
fallback/ramstage 0x62940 stage 165452 LZMA (405524 decompressed)
BUG=b:286930648
TEST= Boot to OS and check boot time
Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com>
Change-Id: I6610f405d287bff2eb4eee6f09026e3361405ded
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75769
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
| -rw-r--r-- | src/mainboard/google/rex/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig index dcdc0d9e8f..257555463c 100644 --- a/src/mainboard/google/rex/Kconfig +++ b/src/mainboard/google/rex/Kconfig @@ -23,6 +23,7 @@ config BOARD_GOOGLE_REX_COMMON select INTEL_LPSS_UART_FOR_CONSOLE select MAINBOARD_DISABLE_STAGE_CACHE select MAINBOARD_HAS_TPM2 + select MB_COMPRESS_RAMSTAGE_LZ4 select PMC_IPC_ACPI_INTERFACE select SOC_INTEL_COMMON_BLOCK_VARIANT_POWER_LIMIT select SOC_INTEL_CSE_LITE_SKU |