[XS] Change in coreboot[master]: soc/intel/meteorlake: Enable LZ4 compression for logo CBFS file

[Subrata Banik (Code Review)]

Attention is currently required from: Eran Mitrani, Jakub Czapiga, Kapil Porwal, Paul Menzel, Tarun Tuli.

Hello Eran Mitrani, Jakub Czapiga, Kapil Porwal, Tarun Tuli, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/76930?usp=email

to look at the new patch set (#4).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

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

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.

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 
---
M src/soc/intel/meteorlake/Kconfig
1 file changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/76930/4