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| author | Ard Biesheuvel <ardb@kernel.org> | 2022-07-02 19:24:13 +0200 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-10-26 17:28:39 +0000 |
| commit | a26050f74dfe865fb4e7bd39d412250d6eabb8e8 (patch) | |
| tree | 8680605a428d09fbce922586702c249c235a9ba5 /ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf | |
| parent | 2eff4ddc77874b8e5088b08c52f2e94491f745f2 (diff) | |
| download | edk2-a26050f74dfe865fb4e7bd39d412250d6eabb8e8.tar.gz edk2-a26050f74dfe865fb4e7bd39d412250d6eabb8e8.tar.bz2 edk2-a26050f74dfe865fb4e7bd39d412250d6eabb8e8.zip | |
ArmVirtPkg/ArmVirtQemu: use first 128 MiB as permanent PEI memory
In order to allow booting with the MMU and caches enabled really early,
we need to ensure that the code that populates the page tables can
access those page tables with the statically defined ID map active.
So let's put the permanent PEI RAM in the first 128 MiB of memory, which
we will cover with this initial ID map (as it is the minimum supported
DRAM size for ArmVirtQemu).
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf')
| -rw-r--r-- | ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf b/ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf new file mode 100644 index 0000000000..2039f71a0e --- /dev/null +++ b/ArmVirtPkg/MemoryInitPei/MemoryInitPeim.inf @@ -0,0 +1,59 @@ +## @file
+# Implementation of MemoryInitPeim that uses the first 128 MiB at the base of
+# DRAM as permanent PEI memory
+#
+# Copyright (c) 2011-2014, ARM Ltd. All rights reserved.<BR>
+# Copyright (c) 2022, Google LLC. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 1.27
+ BASE_NAME = MemoryInit
+ FILE_GUID = 0fbffd44-f98f-4e1c-9922-e9b21f13c3f8
+ MODULE_TYPE = PEIM
+ VERSION_STRING = 1.0
+ ENTRY_POINT = InitializeMemory
+
+[Sources]
+ MemoryInitPeim.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ ArmPkg/ArmPkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
+
+[LibraryClasses]
+ PeimEntryPoint
+ DebugLib
+ HobLib
+ ArmLib
+ ArmPlatformLib
+ MemoryInitPeiLib
+
+[Guids]
+ gEfiMemoryTypeInformationGuid
+
+[FeaturePcd]
+ gEmbeddedTokenSpaceGuid.PcdPrePiProduceMemoryTypeInformationHob
+
+[FixedPcd]
+ gArmTokenSpaceGuid.PcdSystemMemoryBase
+ gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
+
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIMemoryNVS
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiReservedMemoryType
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesData
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiBootServicesCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiBootServicesData
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderData
+
+[Depex]
+ TRUE
|