Revision: 16962
http://sourceforge.net/p/edk2/code/16962
Author: lersek
Date: 2015-02-28 20:31:08 +0000 (Sat, 28 Feb 2015)
Log Message:
-----------
ArmVirtualizationPkg: implement custom MemoryInitPeiLib
This implements a MemoryInitPeiLib instance that differs from the
stock ArmPlatformPkg version only in the fact that it does not remove
the memory used by the flash device (FD). The reason is that, when using
PrePi, the DXE core is started immediately and never returns so there is
no reason to preserve any of the memory that the flash device occupied
originally, and it is preferable to release is so that the OS loader
can reuse it. This is especially important for the relocatable PrePi
configuration, which is aimed at being launched from a boot loader that
itself adheres to the Linux arm64 boot protocol.
Contributed-under: TianoCore Contribution Agreement 1.0
Acked-by: Laszlo Ersek <[email protected]>
Reviewed-by: Olivier Martin <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Laszlo Ersek <[email protected]>
Added Paths:
-----------
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.c
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.inf
Added:
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.c
===================================================================
---
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.c
(rev 0)
+++
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.c
2015-02-28 20:31:08 UTC (rev 16962)
@@ -0,0 +1,91 @@
+/** @file
+*
+* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
+* Copyright (c) 2014, Linaro Limited. All rights reserved.
+*
+* This program and the accompanying materials
+* are licensed and made available under the terms and conditions of the BSD
License
+* which accompanies this distribution. The full text of the license may be
found at
+* http://opensource.org/licenses/bsd-license.php
+*
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
+*
+**/
+
+#include <PiPei.h>
+
+#include <Library/ArmPlatformLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+
+VOID
+BuildMemoryTypeInformationHob (
+ VOID
+ );
+
+VOID
+InitMmu (
+ VOID
+ )
+{
+ ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;
+ VOID *TranslationTableBase;
+ UINTN TranslationTableSize;
+ RETURN_STATUS Status;
+
+ // Get Virtual Memory Map from the Platform Library
+ ArmPlatformGetVirtualMemoryMap (&MemoryTable);
+
+ //Note: Because we called PeiServicesInstallPeiMemory() before to call
InitMmu() the MMU Page Table resides in
+ // DRAM (even at the top of DRAM as it is the first permanent memory
allocation)
+ Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase,
&TranslationTableSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));
+ }
+}
+
+EFI_STATUS
+EFIAPI
+MemoryPeim (
+ IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,
+ IN UINT64 UefiMemorySize
+ )
+{
+ EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
+
+ // Ensure PcdSystemMemorySize has been set
+ ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
+
+ //
+ // Now, the permanent memory has been installed, we can call AllocatePages()
+ //
+ ResourceAttributes = (
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
+ EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_TESTED
+ );
+
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ PcdGet64 (PcdSystemMemoryBase),
+ PcdGet64 (PcdSystemMemorySize)
+ );
+
+ // Build Memory Allocation Hob
+ InitMmu ();
+
+ if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
+ // Optional feature that helps prevent EFI memory map fragmentation.
+ BuildMemoryTypeInformationHob ();
+ }
+
+ return EFI_SUCCESS;
+}
Added:
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.inf
===================================================================
---
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.inf
(rev 0)
+++
trunk/edk2/ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationMemoryInitPeiLib/ArmVirtualizationMemoryInitPeiLib.inf
2015-02-28 20:31:08 UTC (rev 16962)
@@ -0,0 +1,66 @@
+#/** @file
+#
+# Copyright (c) 2011-2014, ARM Ltd. All rights reserved.<BR>
+# Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD
License
+# which accompanies this distribution. The full text of the license may be
found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
IMPLIED.
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = ArmVirtMemoryInitPeiLib
+ FILE_GUID = 021b6156-3cc8-4e99-85ee-13d8a871edf2
+ MODULE_TYPE = SEC
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = MemoryInitPeiLib
+
+[Sources]
+ ArmVirtualizationMemoryInitPeiLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ ArmPkg/ArmPkg.dec
+ ArmPlatformPkg/ArmPlatformPkg.dec
+
+[LibraryClasses]
+ DebugLib
+ HobLib
+ ArmLib
+ ArmPlatformLib
+
+[Guids]
+ gEfiMemoryTypeInformationGuid
+
+[FeaturePcd]
+ gEmbeddedTokenSpaceGuid.PcdPrePiProduceMemoryTypeInformationHob
+
+[FixedPcd]
+ gArmTokenSpaceGuid.PcdFdSize
+
+ gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
+
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIMemoryNVS
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiReservedMemoryType
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesData
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiBootServicesCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiBootServicesData
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderCode
+ gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiLoaderData
+
+[Pcd]
+ gArmTokenSpaceGuid.PcdSystemMemoryBase
+ gArmTokenSpaceGuid.PcdSystemMemorySize
+ gArmTokenSpaceGuid.PcdFdBaseAddress
+
+[Depex]
+ TRUE
------------------------------------------------------------------------------
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