mirror of https://github.com/acidanthera/audk.git
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
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/** @file
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*
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* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
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* Copyright (c) 2014, Linaro Limited. All rights reserved.
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*
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* This program and the accompanying materials
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* are licensed and made available under the terms and conditions of the BSD License
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* which accompanies this distribution. The full text of the license may be found at
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* http://opensource.org/licenses/bsd-license.php
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*
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* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*
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**/
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#include <PiPei.h>
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#include <Library/ArmPlatformLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PcdLib.h>
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VOID
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BuildMemoryTypeInformationHob (
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VOID
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);
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VOID
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InitMmu (
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VOID
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)
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{
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ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;
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VOID *TranslationTableBase;
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UINTN TranslationTableSize;
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RETURN_STATUS Status;
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// Get Virtual Memory Map from the Platform Library
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ArmPlatformGetVirtualMemoryMap (&MemoryTable);
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//Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in
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// DRAM (even at the top of DRAM as it is the first permanent memory allocation)
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Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));
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}
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}
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EFI_STATUS
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EFIAPI
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MemoryPeim (
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IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,
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IN UINT64 UefiMemorySize
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)
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{
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EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
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// Ensure PcdSystemMemorySize has been set
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ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
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//
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// Now, the permanent memory has been installed, we can call AllocatePages()
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//
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ResourceAttributes = (
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EFI_RESOURCE_ATTRIBUTE_PRESENT |
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EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
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EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
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EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_TESTED
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);
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BuildResourceDescriptorHob (
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EFI_RESOURCE_SYSTEM_MEMORY,
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ResourceAttributes,
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PcdGet64 (PcdSystemMemoryBase),
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PcdGet64 (PcdSystemMemorySize)
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);
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// Build Memory Allocation Hob
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InitMmu ();
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if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
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// Optional feature that helps prevent EFI memory map fragmentation.
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BuildMemoryTypeInformationHob ();
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}
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return EFI_SUCCESS;
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}
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