3 * Copyright (c) 2011-2015, ARM Limited. All rights reserved.
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 #include <Library/ArmMmuLib.h>
18 #include <Library/ArmPlatformLib.h>
19 #include <Library/DebugLib.h>
20 #include <Library/HobLib.h>
21 #include <Library/MemoryAllocationLib.h>
22 #include <Library/PcdLib.h>
25 BuildMemoryTypeInformationHob (
32 IN ARM_MEMORY_REGION_DESCRIPTOR
*MemoryTable
36 VOID
*TranslationTableBase
;
37 UINTN TranslationTableSize
;
40 //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in
41 // DRAM (even at the top of DRAM as it is the first permanent memory allocation)
42 Status
= ArmConfigureMmu (MemoryTable
, &TranslationTableBase
, &TranslationTableSize
);
43 if (EFI_ERROR (Status
)) {
44 DEBUG ((EFI_D_ERROR
, "Error: Failed to enable MMU\n"));
56 FileHandle - Handle of the file being invoked.
57 PeiServices - Describes the list of possible PEI Services.
61 Status - EFI_SUCCESS if the boot mode could be set
67 IN EFI_PHYSICAL_ADDRESS UefiMemoryBase
,
68 IN UINT64 UefiMemorySize
71 ARM_MEMORY_REGION_DESCRIPTOR
*MemoryTable
;
72 EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes
;
73 EFI_PEI_HOB_POINTERS NextHob
;
76 // Get Virtual Memory Map from the Platform Library
77 ArmPlatformGetVirtualMemoryMap (&MemoryTable
);
79 // Ensure PcdSystemMemorySize has been set
80 ASSERT (PcdGet64 (PcdSystemMemorySize
) != 0);
83 // Now, the permanent memory has been installed, we can call AllocatePages()
85 ResourceAttributes
= (
86 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
87 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
88 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
89 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
90 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
|
91 EFI_RESOURCE_ATTRIBUTE_TESTED
95 // Check if the resource for the main system memory has been declared
98 NextHob
.Raw
= GetHobList ();
99 while ((NextHob
.Raw
= GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
, NextHob
.Raw
)) != NULL
) {
100 if ((NextHob
.ResourceDescriptor
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
) &&
101 (PcdGet64 (PcdSystemMemoryBase
) >= NextHob
.ResourceDescriptor
->PhysicalStart
) &&
102 (NextHob
.ResourceDescriptor
->PhysicalStart
+ NextHob
.ResourceDescriptor
->ResourceLength
<= PcdGet64 (PcdSystemMemoryBase
) + PcdGet64 (PcdSystemMemorySize
)))
107 NextHob
.Raw
= GET_NEXT_HOB (NextHob
);
111 // Reserved the memory space occupied by the firmware volume
112 BuildResourceDescriptorHob (
113 EFI_RESOURCE_SYSTEM_MEMORY
,
115 PcdGet64 (PcdSystemMemoryBase
),
116 PcdGet64 (PcdSystemMemorySize
)
120 // Build Memory Allocation Hob
121 InitMmu (MemoryTable
);
123 if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob
)) {
124 // Optional feature that helps prevent EFI memory map fragmentation.
125 BuildMemoryTypeInformationHob ();