soc/intel/common/block/cse: Retrieve CSE RW FW version conditionally

This patch introduces a newer config to store the CSE RW FW version into
the CBMEM. Prior to that CSE RW FW version was fetched unconditionally
and ended up increasing the boot time by 7ms to 20ms depending on the
SoC arch (including CSE arch).

The way to retrieve the CSE firmware version is by sending the HECI
command to read the CSE Boot Partition (BP) info. The cost of sending
HECI command to read the CSE FW version is between 7ms-20ms (depending
on the SoC architecture) hence,ensure this feature is platform specific
and only enabled for the platformthat would like to store the CSE version into the CBMEM.

TEST=Build and boot google/rex to avoid getting CSE RW FW version
to save 18ms of the boot time.

w/o this patch:
  10:start of ramstage                            722,215 (43)
  17:starting LZ4 decompress (ignore for x86)     741,415 (19,200)

w/ this patch:
  10:start of ramstage                            722,257 (43)
  17:starting LZ4 decompress (ignore for x86)     723,777 (1,520)

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I94f9f0f99706724c7d7e05668390f3deb603bd32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75998
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>

0 files changed, 0 insertions, 0 deletions