[coreboot-gerrit] Change in coreboot[master]: drivers/spi: Add BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES config

[Shelley Chen (Code Review)]

Hello build bot (Jenkins), Furquan Shaikh, Damien Zammit, David Guckian, Vanessa Eusebio, Julius Werner, Angel Pons, Andrey Petrov, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/45740

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

Change subject: drivers/spi: Add BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES config
......................................................................

drivers/spi: Add BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES config

Added new config BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES to accomodate
older x86 platforms that don't allow writing to SPI flash when early
stages are running XIP from flash.  We are maintaining the use of
cbmem for these older platforms because we have no way of validating
the earlier write back to mrc_cache at this time.  If
BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES is not selected,
BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY will get auto-selected if
BOOT_DEVICE_SPI_FLASH_RW_NOMMAP=y.  This allows for current platforms
that write to flash in the earlier stages, assuming that they have
that capability.

BUG=b:150502246
BRANCH=None
TEST=./util/abuild/abuild -p none -t GOOGLE_NAMI -x -a

Change-Id: I3aef8be702f55873233610b8e20d0662aa951ca7
Signed-off-by: Shelley Chen 
---
M src/cpu/intel/haswell/Kconfig
M src/cpu/intel/model_2065x/Kconfig
M src/cpu/intel/model_206ax/Kconfig
M src/drivers/spi/Kconfig
M src/northbridge/intel/x4x/Kconfig
M src/soc/amd/picasso/Kconfig
M src/soc/amd/stoneyridge/Kconfig
M src/soc/intel/alderlake/Kconfig
M src/soc/intel/apollolake/Kconfig
M src/soc/intel/baytrail/Kconfig
M src/soc/intel/braswell/Kconfig
M src/soc/intel/broadwell/Kconfig
M src/soc/intel/cannonlake/Kconfig
M src/soc/intel/denverton_ns/Kconfig
M src/soc/intel/elkhartlake/Kconfig
M src/soc/intel/icelake/Kconfig
M src/soc/intel/jasperlake/Kconfig
M src/soc/intel/skylake/Kconfig
M src/soc/intel/tigerlake/Kconfig
M src/soc/intel/xeon_sp/Kconfig
20 files changed, 19 insertions(+), 12 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/40/45740/3