Wonkyu Kim has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/75769?usp=email )
Change subject: mb/google/rex: change ramstage compression to LZ4 ......................................................................
mb/google/rex: change ramstage compression to LZ4
for saving boot time, change ramstage compression from LZMA to LZ4. Boot time saving is around 35ms(30-37ms) while SPI size imact is 230KB. For detail, refer below.
Exising: 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)
Signed-off-by: Wonkyu Kim wonkyu.kim@intel.com Change-Id: I6610f405d287bff2eb4eee6f09026e3361405ded --- M src/mainboard/google/rex/Kconfig 1 file changed, 1 insertion(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/75769/1
diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig index 0fb4176..0b0f395 100644 --- a/src/mainboard/google/rex/Kconfig +++ b/src/mainboard/google/rex/Kconfig @@ -23,6 +23,7 @@ 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
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Wonkyu Kim (Code Review)