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| author | Olivier Martin <olivier.martin@arm.com> | 2015-05-29 13:50:43 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@Edk2> | 2015-05-29 13:50:43 +0000 |
| commit | 7fbd1eb2312d3dfab2ac8cdfcefc234c73d8aeeb (patch) | |
| tree | 0062d16f930c05cb0fe7e7eececca5f8fb91b18e /ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c | |
| parent | 4c31caef17170dfd5bd7fe82b890078547750370 (diff) | |
| download | edk2-7fbd1eb2312d3dfab2ac8cdfcefc234c73d8aeeb.zip edk2-7fbd1eb2312d3dfab2ac8cdfcefc234c73d8aeeb.tar.gz edk2-7fbd1eb2312d3dfab2ac8cdfcefc234c73d8aeeb.tar.bz2 | |
Renamed ArmPlatformPkg/ArmVirtualizationPkg into ArmVirtPkg
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17537 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c')
| -rw-r--r-- | ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c new file mode 100644 index 0000000..8ce63b4 --- /dev/null +++ b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c @@ -0,0 +1,101 @@ +/** @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>
+#include <Library/CacheMaintenanceLib.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)
+ );
+
+ //
+ // When running under virtualization, the PI/UEFI memory region may be
+ // clean but not invalidated in system caches or in lower level caches
+ // on other CPUs. So invalidate the region by virtual address, to ensure
+ // that the contents we put there with the caches and MMU off will still
+ // be visible after turning them on.
+ //
+ InvalidateDataCacheRange ((VOID*)(UINTN)UefiMemoryBase, UefiMemorySize);
+
+ // Build Memory Allocation Hob
+ InitMmu ();
+
+ if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
+ // Optional feature that helps prevent EFI memory map fragmentation.
+ BuildMemoryTypeInformationHob ();
+ }
+
+ return EFI_SUCCESS;
+}
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