From: "Sughosh Ganu" <sughosh.ganu@linaro.org>
To: devel@edk2.groups.io
Cc: Sami Mujawar <sami.mujawar@arm.com>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Ard Biesheuvel <ardb+tianocore@kernel.org>
Subject: [PATCH v4 13/14] MdeModulePkg/VariableStandaloneMm: Set PcdFlashNvStorageVariableBase to Pcd
Date: Wed, 17 Feb 2021 16:57:16 +0530 [thread overview]
Message-ID: <20210217112717.6820-14-sughosh.ganu@linaro.org> (raw)
In-Reply-To: <20210217112717.6820-1-sughosh.ganu@linaro.org>
From: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Instead of running StMM in SPM, OP-TEE creates a new secure partition,
which emulates SPM and isolates StMM from the rest of the Trusted
Applications (TAs). We can then compile StMM as an FD image and run it
in OP-TEE. With the addition of a new RPMB driver, we can leverage OP-TEE
and store variables to an RPMB device.
Since EDK2 upper layers expect byte addressable code, for the RPMB to
work, we need to allocate memory and sync it with the hardware on
read/writes. Since DynamicPCDs are not supported in that context we
can only use PatchablePCDs. So let's switch them to Pcd instead of
FixedPcd and accomodate the new driver.
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
---
Changes since V3: None
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf
index fada0bf3c5..2a25fbdada 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf
@@ -119,10 +119,12 @@
## SOMETIMES_PRODUCES ## Variable:L"VarErrorFlag"
gEdkiiVarErrorFlagGuid
-[FixedPcd]
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize ## CONSUMES
+[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ## SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize ## CONSUMES
+
+[FixedPcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVolatileVariableSize ## CONSUMES
--
2.17.1
next prev parent reply other threads:[~2021-02-17 11:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 11:27 [PATCH v4 00/14] Add support for using FF-A calls Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 01/14] ArmPkg/IndustryStandard: Add barebones FF-A header Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 02/14] ArmPkg/ArmSvcLib: Return x4-x7 in output parameters Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 03/14] StandaloneMmPkg: Use FF-A header file in Standalone MM Core entry point Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 04/14] ArmPkg: Introduce support for PcdFfaEnable Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 05/14] ArmPkg: Add macros for SPM version Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 06/14] StandaloneMmPkg: Use macros for SPM version check Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 07/14] ArmPkg: Add macros for SPM version with FF-A support enabled Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 08/14] StandaloneMmPkg: Add option to use FF-A calls for getting SPM version Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 09/14] StandaloneMmPkg: Add option to use FF-A calls for communication with SPM Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 10/14] ArmPkg: Use FF-A header file in Standalone MM Arm MMU library Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 11/14] ArmPkg: Allow FF-A calls to get memory region's attributes Sughosh Ganu
2021-02-17 11:27 ` [PATCH v4 12/14] ArmPkg: Allow FF-A calls to set " Sughosh Ganu
2021-02-17 11:27 ` Sughosh Ganu [this message]
2021-02-18 3:13 ` 回复: [edk2-devel] [PATCH v4 13/14] MdeModulePkg/VariableStandaloneMm: Set PcdFlashNvStorageVariableBase to Pcd gaoliming
2021-02-18 9:17 ` Ilias Apalodimas
2021-02-19 1:15 ` 回复: " gaoliming
2021-02-17 11:27 ` [PATCH v4 14/14] StandaloneMmPkg: Allow sending FFA Direct Request message to StandaloneMm Sughosh Ganu
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