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soc/intel/meteorlake: Enable LZ4 compression for logo CBFS file 

This patch selects LZ4 decompression for logo CBFS file. Able to save
2ms of the boot time when HAVE_FSP_LOGO_SUPPORT config is enabled.
However, the compressed BMP logo size is increased by ~2KB.

Raw BMP Image size is ~97KB.

BUG=b:284799726
TEST=Able to see pre-boot splash screen while booting google/rex
with 32MB (W25Q256JWEIM) SPI-Flash.

w/o this patch:
  sudo cbfstool image-screebo4es.bin print -r FW_MAIN_A
  FMAP REGION: FW_MAIN_A
  Name         Offset     Type  Size   Comp
  ...
  ...
  logo.bmp     0x167480   raw   6172 LZMA (97078 decompressed)
  ...

  15:starting LZMA decompress (ignore for x86)  849,090 (1,022)
  16:finished LZMA decompress (ignore for x86)  851,207 (2,116)

w/ this patch:
  sudo cbfstool image-screebo4es.bin print -r FW_MAIN_A
  FMAP REGION: FW_MAIN_A
  Name         Offset     Type  Size   Comp
  ...
  ...
  logo.bmp     0x167480   raw   8568 LZ4  (97078 decompressed)
  ...

  17:starting LZ4 decompress (ignore for x86)   849,419 (1,279)
  18:finished LZ4 decompress (ignore for x86)   849,559 (140)

Change-Id: I856c39146a5ec0faf44c1cd37fa7c0d7296bf673
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76930
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Subrata Banik 2023-08-04 23:43:53 +05:30
parent 7a6f888e8c
commit 36d612c0aa
1 changed files with 3 additions and 0 deletions
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3
src/soc/intel/meteorlake/Kconfig
View File

@ -426,4 +426,7 @@ config IOE_DIE_CLOCK_START
int
default 6 if SOC_INTEL_METEORLAKE_U_H
config HAVE_BMP_LOGO_COMPRESS_LZMA
default n
endif