mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-29 12:35:53 +01:00
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/** @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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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <PiPei.h>
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#include <Library/ArmMmuLib.h>
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#include <Library/ArmVirtMemInfoLib.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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#include <Library/CacheMaintenanceLib.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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ArmVirtGetMemoryMap (&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 ((DEBUG_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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UINT64 SystemMemoryTop;
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UINT64 SystemMemorySize;
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VOID *Hob;
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// Ensure PcdSystemMemorySize has been set
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ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
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SystemMemorySize = PcdGet64 (PcdSystemMemorySize);
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Hob = GetFirstGuidHob (&gArmVirtSystemMemorySizeGuid);
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if (Hob != NULL) {
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SystemMemorySize = *(UINT64 *)GET_GUID_HOB_DATA (Hob);
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}
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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_WRITE_BACK_CACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_TESTED
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);
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SystemMemoryTop = PcdGet64 (PcdSystemMemoryBase) + SystemMemorySize;
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if (SystemMemoryTop - 1 > MAX_ALLOC_ADDRESS) {
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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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(UINT64)MAX_ALLOC_ADDRESS - PcdGet64 (PcdSystemMemoryBase) + 1
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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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(UINT64)MAX_ALLOC_ADDRESS + 1,
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SystemMemoryTop - MAX_ALLOC_ADDRESS - 1
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);
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} else {
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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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SystemMemorySize
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);
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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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