[coreboot-gerrit] Change in coreboot[master]: soc/intel/cmn/fast_spi: Add API to check if SPI Cycle In Progress

[Subrata Banik (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Angel Pons, Arthur Heymans, Lean Sheng Tan, Werner Zeh.
Hello build bot (Jenkins), Tim Wawrzynczak, Angel Pons, Arthur Heymans, Eric Lai, Lean Sheng Tan, Werner Zeh,

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

https://review.coreboot.org/c/coreboot/+/63624

to look at the new patch set (#3).

Change subject: soc/intel/cmn/fast_spi: Add API to check if SPI Cycle In Progress
......................................................................

soc/intel/cmn/fast_spi: Add API to check if SPI Cycle In Progress

This patch creates a helper function to check if any SPI transaction
is pending.

As per Intel PCH BIOS spec section 3.6 Flash Security Recommendation,
it's important to ensure there is no pending SPI transaction before
setting SPI lock bits.

BUG=b:211954778
TEST=Able to build google/brya with this patch and no error msg seen
due to `SPI transaction is pending`.

Signed-off-by: Subrata Banik 
Change-Id: Ibd3f67ae60bfcb3610cd0950b057da97ff74b5b9
---
M src/soc/intel/common/block/fast_spi/fast_spi_flash.c
M src/soc/intel/common/block/include/intelblocks/fast_spi.h
2 files changed, 14 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/63624/3