soc/amd/common/psp_smi_flash: implement SPI read/write/erase command

Use coreboot's SPI flash access infrastructure to do the flash read,
write, or erase operations as requested from the PSP.

This patch is a modified version of parts of CB:65523.

Document #55758 Rev. 2.04 was used as a reference.

Test=When selecting SOC_AMD_COMMON_BLOCK_PSP_SMI, Mandolin still builds

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Ritul Guru <ritul.bits@gmail.com>
Change-Id: I4957a6d316015cc7037acf52facb6cc69188d446
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions