Re: [PATCH v7 3/5] efi: Add tee-based EFI variable driver

On Tue, 1 Aug 2023 at 00:05, Randy Dunlap [off-list ref] wrote:

On 7/30/23 23:50, Masahisa Kojima wrote:

quoted

diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 043ca31c114e..aa38089d1e4a 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig

@@ -287,3 +287,18 @@ config UEFI_CPER_X86
      bool
      depends on UEFI_CPER && X86
      default y
+
+config TEE_STMM_EFI
+     tristate "TEE based EFI runtime variable service driver"

                  TEE-based

OK.

quoted

+     depends on EFI && OPTEE && !EFI_VARS_PSTORE
+     help
+       Select this config option if TEE is compiled to include StandAloneMM
+       as a separate secure partition it has the ability to check and store

                               partition. It has the ability

OK.

Thank you for your review.

Regards,
Masahisa Kojima

quoted

+       EFI variables on an RPMB or any other non-volatile medium used by
+       StandAloneMM.
+
+       Enabling this will change the EFI runtime services from the firmware
+       provided functions to TEE calls.
+
+       To compile this driver as a module, choose M here: the module
+       will be called tee_stmm_efi.

--
~Randy

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