UEFI Secure variable support can be enabled using Standalone MM
for FVP RevC model.
The following steps enable UEFI variable service using StandaloneMm:
1. Add MmComminucationDxe.
- Enables communication with StandaloneMm.
The PcdMmBufferBase & PcdBufferSize definitions are used
as the NS Shared Buffer for communication.
2. Use VariableSmmRuntimeDxe
- Use Standalone MM instance of Variable Runtime Dxe.
3. Disable caching of variable data as this is cached on the
normal world side. This is done to prevent arbitrary accesses.
Therefore, set PcdEnableVariableRuntimeCache to FALSE.
4. Although MmUnblockMemoryLib is required for supporting variable
caching (which we disabled), we need a NULL instance of the
MmUnblockMemoryLib for the build to succeed.
Also, the Arm implementation does not support modification of
the StandaloneMm memory map from normal world, so we have no
real need for MmUnblockMemoryLib.
Signed-off-by: levi.yun <yeoreum....@arm.com>
---
Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc | 49 +++++++++++++++++++-
Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf | 9 ++++
2 files changed, 57 insertions(+), 1 deletion(-)
diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
index
f70a4d52ba06f570e017ab5286f06d87193753e5..e7c011cc8abe874ad24f7b6a0c8b8d0ab0d933f7
100644
--- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
+++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc
@@ -25,6 +25,15 @@ [Defines]
SKUID_IDENTIFIER = DEFAULT
FLASH_DEFINITION =
Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
+ # To allow the use of ueif secure variable feature, set this to TRUE.
+ DEFINE ENABLE_UEFI_SECURE_VARIABLE = FALSE
+
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+ DEFINE ENABLE_STMM = TRUE
+!else
+ DEFINE ENABLE_STMM = FALSE
+!endif
+
!ifndef ARM_FVP_RUN_NORFLASH
DEFINE EDK2_SKIP_PEICORE=1
!endif
@@ -53,6 +62,10 @@ [LibraryClasses.common]
FileExplorerLib|MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
!endif
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+
MmUnblockMemoryLib|MdePkg/Library/MmUnblockMemoryLib/MmUnblockMemoryLibNull.inf
+!endif
+
DtPlatformDtbLoaderLib|Platform/ARM/VExpressPkg/Library/ArmVExpressDtPlatformDtbLoaderLib/ArmVExpressDtPlatformDtbLoaderLib.inf
[LibraryClasses.common.DXE_RUNTIME_DRIVER]
@@ -71,7 +84,9 @@ [LibraryClasses.common.UEFI_DRIVER,
LibraryClasses.common.UEFI_APPLICATION, Libr
[BuildOptions]
GCC:*_*_AARCH64_PLATFORM_FLAGS ==
-I$(WORKSPACE)/Platform/ARM/VExpressPkg/Include/Platform/RTSM
-
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+ GCC:*_*_*_CC_FLAGS = -DENABLE_UEFI_SECURE_VARIABLE
+!endif
################################################################################
#
@@ -85,6 +100,11 @@ [PcdsFeatureFlag.common]
# It could be set FALSE to save size.
gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+ ## Disable Runtime Variable Cache.
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache|FALSE
+!endif
+
[PcdsFixedAtBuild.common]
# Only one core enters UEFI, and PSCI is implemented in EL3 by ATF
gArmPlatformTokenSpaceGuid.PcdCoreCount|1
@@ -92,12 +112,26 @@ [PcdsFixedAtBuild.common]
#
# NV Storage PCDs. Use base of 0x0C000000 for NOR1
#
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase|0x0FFC0000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize|0x00010000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0x0FFD0000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize|0x00010000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0x0FFE0000
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize|0x00010000
+!endif
+
+ #
+ # Set the base address and size of the buffer used
+ # by MM_COMMUNICATE for communication between the
+ # Normal world edk2 and the StandaloneMm image at S-EL0.
+ # This buffer is allocated in TF-A.
+ #
+!if $(ENABLE_STMM) == TRUE
+ ## MM Communicate
+ gArmTokenSpaceGuid.PcdMmBufferBase|0xFF600000
+ gArmTokenSpaceGuid.PcdMmBufferSize|0x10000
+!endif
gArmTokenSpaceGuid.PcdVFPEnabled|1
@@ -252,6 +286,10 @@ [Components.common]
MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf
!endif
MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
+
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+ MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.inf
+!else
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf {
<LibraryClasses>
NULL|EmbeddedPkg/Library/NvVarStoreFormattedLib/NvVarStoreFormattedLib.inf
@@ -259,6 +297,8 @@ [Components.common]
BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
}
MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+!endif
+
MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystemRuntimeDxe.inf
EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf
@@ -368,3 +408,10 @@ [Components.common]
# SATA Controller
#
MdeModulePkg/Bus/Pci/SataControllerDxe/SataControllerDxe.inf
+
+!if $(ENABLE_STMM) == TRUE
+ ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf {
+ <LibraryClasses>
+
NULL|StandaloneMmPkg/Library/VariableMmDependency/VariableMmDependency.inf
+ }
+!endif
diff --git a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
index
e836691ddf6f9fd7e9abff97a560af6886b14ccb..612535caa7ee518a0bb083461f2573e182c78281
100644
--- a/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
+++ b/Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.fdf
@@ -80,8 +80,14 @@ [FV.FvMain]
!if $(SECURE_BOOT_ENABLE) == TRUE
INF
SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigDxe.inf
!endif
+
+!if $(ENABLE_UEFI_SECURE_VARIABLE) == TRUE
+ INF MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmmRuntimeDxe.inf
+!else
INF MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
INF MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+!endif
+
INF
MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
INF MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystemRuntimeDxe.inf
INF EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf
@@ -168,6 +174,9 @@ [FV.FvMain]
INF MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
INF MdeModulePkg/Application/UiApp/UiApp.inf
+!if $(ENABLE_STMM) == TRUE
+ INF ArmPkg/Drivers/MmCommunicationDxe/MmCommunication.inf
+!endif
#
# PCI Support
--
Guid("CE165669-3EF3-493F-B85D-6190EE5B9759")
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