diff options
Diffstat (limited to 'src/soc/amd/common/block/psp/Kconfig')
| -rw-r--r-- | src/soc/amd/common/block/psp/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/psp/Kconfig b/src/soc/amd/common/block/psp/Kconfig index 266a6ba10e..34a0642893 100644 --- a/src/soc/amd/common/block/psp/Kconfig +++ b/src/soc/amd/common/block/psp/Kconfig @@ -88,6 +88,25 @@ config PSP_PLATFORM_SECURE_BOOT Refer AMD PSB user guide doc# 56654, Revision# 1.00, this document is only available with NDA customers. +config SOC_AMD_COMMON_BLOCK_PSP_SMI + bool + default n + select SPI_FLASH_SMM if BOOT_DEVICE_SPI_FLASH_RW_NOMMAP + help + Add PSP SMI handler for SPI flash access. + + When ROM armor isn't enabled, the x86 part owns the SPI controller, + so when the PSP wants to access the SPI flash, it sends an SMI to the + x86 side and the corresponding SMI handler will do the SPI flash + access for the PSP. + + WARNING: Since the flash access in the SMI handler is a blocking + operation during which all cores stay in SMM, an erase operation may + lock up the system for a long enough time to be noticeable. Reads and + writes with small data sizes are less problematic. This is AMD + specific design and should be enabled when PSP requires to access the + SPI flash after the BOOT_DONE PSP command. + config PSP_INCLUDES_HSP bool depends on SOC_AMD_COMMON_BLOCK_PSP |