diff options
Diffstat (limited to 'lib/efi_loader/Kconfig')
| -rw-r--r-- | lib/efi_loader/Kconfig | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig index a22e47616f7..1cefdf0d217 100644 --- a/lib/efi_loader/Kconfig +++ b/lib/efi_loader/Kconfig @@ -55,13 +55,55 @@ config EFI_VARIABLE_FILE_STORE stored as file /ubootefi.var on the EFI system partition. config EFI_MM_COMM_TEE - bool "UEFI variables storage service via OP-TEE" - depends on OPTEE + bool "UEFI variables storage service via the trusted world" + select ARM_FFA_TRANSPORT + select TEE + select OPTEE help + Allowing access to the MM SP services (SPs such as StandAlonneMM, smm-gateway). + When using the u-boot OP-TEE driver, StandAlonneMM is supported. + When using the u-boot FF-A driver any MM SP is supported. + If OP-TEE is present and running StandAloneMM, dispatch all UEFI variable related operations to that. The application will verify, authenticate and store the variables on an RPMB. + When ARM_FFA_TRANSPORT is used, dispatch all UEFI variable related + operations to the MM SP running in the secure world. + A door bell mechanism is used to notify the SP when there is data in the shared + MM buffer. The data is copied by u-boot to the shared buffer before issuing + the door bell event. + +config FFA_SHARED_MM_BUF_SIZE + int "Memory size of the shared MM communication buffer" + default 0 + depends on EFI_MM_COMM_TEE + help + This defines the size in bytes of the memory area reserved for the shared + buffer used for communication between the MM feature in U-Boot and + the MM SP in secure world. + The size of the memory region must be a multiple of the size of the maximum + translation granule size that is specified in the ID_AA64MMFR0_EL1 System register. + It is assumed that the MM SP knows the size of the shared MM communication buffer. + +config FFA_SHARED_MM_BUF_OFFSET + int "Data offset in the shared MM communication buffer" + default 0 + depends on EFI_MM_COMM_TEE + help + This defines the offset in bytes of the data read or written to in the shared + buffer by the MM SP. + +config FFA_SHARED_MM_BUF_ADDR + hex "Define the address of the shared MM communication buffer" + default 0x0 + depends on EFI_MM_COMM_TEE + help + This defines the address of the shared MM communication buffer + used for communication between the MM feature in U-Boot and + the MM SP in secure world. + It is assumed that the MM SP knows the address of the shared MM communication buffer. + config EFI_VARIABLE_NO_STORE bool "Don't persist non-volatile UEFI variables" help |