| ## SPDX-License-Identifier: GPL-2.0-only |
| |
| config SMMSTORE |
| bool "Support for flash based, SMM mediated data store" |
| depends on BOOT_DEVICE_SUPPORTS_WRITES && HAVE_SMI_HANDLER |
| default y if PAYLOAD_TIANOCORE |
| select SPI_FLASH_SMM if BOOT_DEVICE_SPI_FLASH_RW_NOMMAP |
| |
| config SMMSTORE_V2 |
| bool "Use version 2 of SMMSTORE API" |
| depends on SMMSTORE |
| default y if TIANOCORE_UEFIPAYLOAD |
| default n |
| help |
| Version 2 of SMMSTORE allows secure communication with SMM and |
| makes no assumptions on the structure of the data stored within. |
| It splits the store into chunks to allows fault tolerant writes. |
| |
| By using version 2 you cannot make use of software that expects |
| a version 1 SMMSTORE. |
| |
| config SMMSTORE_IN_CBFS |
| bool |
| default n |
| help |
| Select this if you want to add an SMMSTORE region to a |
| cbfsfile in a cbfs FMAP region |
| |
| if SMMSTORE |
| config SMMSTORE_REGION |
| string "fmap region in which SMM store file is kept" if SMMSTORE_IN_CBFS |
| default "RW_LEGACY" if CHROMEOS && SMMSTORE_IN_CBFS |
| default "COREBOOT" if SMMSTORE_IN_CBFS |
| default "SMMSTORE" |
| |
| config SMMSTORE_FILENAME |
| string "SMM store file name" if SMMSTORE_IN_CBFS |
| default "smm_store" |
| |
| config SMMSTORE_SIZE |
| hex "size of the SMMSTORE FMAP region" |
| depends on !SMMSTORE_IN_CBFS |
| default 0x40000 |
| help |
| Sets the size of the default SMMSTORE FMAP region. |
| If using an UEFI payload, note that UEFI specifies at least 64K. |
| The current implementation of SMMSTORE is append only, so until |
| garbage collection is implemented it is better to set this to |
| a rather large value. |
| |
| endif |
