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3a6eaccf | 1 | /** @file\r |
2 | *\r | |
bb5420bb | 3 | * Copyright (c) 2011-2014, ARM Limited. All rights reserved.\r |
3a6eaccf | 4 | *\r |
5 | * This program and the accompanying materials\r | |
6 | * are licensed and made available under the terms and conditions of the BSD License\r | |
7 | * which accompanies this distribution. The full text of the license may be found at\r | |
8 | * http://opensource.org/licenses/bsd-license.php\r | |
9 | *\r | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | *\r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiPei.h>\r | |
16 | \r | |
17 | #include <Library/ArmPlatformLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/HobLib.h>\r | |
20 | #include <Library/MemoryAllocationLib.h>\r | |
21 | #include <Library/PcdLib.h>\r | |
22 | \r | |
3a6eaccf | 23 | VOID\r |
24 | BuildMemoryTypeInformationHob (\r | |
25 | VOID\r | |
26 | );\r | |
27 | \r | |
28 | VOID\r | |
29 | InitMmu (\r | |
30 | VOID\r | |
31 | )\r | |
32 | {\r | |
33 | ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r | |
34 | VOID *TranslationTableBase;\r | |
35 | UINTN TranslationTableSize;\r | |
6f050ad6 | 36 | RETURN_STATUS Status;\r |
3a6eaccf | 37 | \r |
38 | // Get Virtual Memory Map from the Platform Library\r | |
b34e4db3 | 39 | ArmPlatformGetVirtualMemoryMap (&MemoryTable);\r |
3a6eaccf | 40 | \r |
41 | //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r | |
42 | // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r | |
6f050ad6 OM |
43 | Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r |
44 | if (EFI_ERROR (Status)) {\r | |
45 | DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));\r | |
46 | }\r | |
3a6eaccf | 47 | }\r |
48 | \r | |
49 | /*++\r | |
50 | \r | |
51 | Routine Description:\r | |
52 | \r | |
53 | \r | |
54 | \r | |
55 | Arguments:\r | |
56 | \r | |
57 | FileHandle - Handle of the file being invoked.\r | |
58 | PeiServices - Describes the list of possible PEI Services.\r | |
59 | \r | |
60 | Returns:\r | |
61 | \r | |
62 | Status - EFI_SUCCESS if the boot mode could be set\r | |
63 | \r | |
64 | --*/\r | |
65 | EFI_STATUS\r | |
66 | EFIAPI\r | |
67 | MemoryPeim (\r | |
68 | IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r | |
69 | IN UINT64 UefiMemorySize\r | |
70 | )\r | |
71 | {\r | |
d269095b | 72 | EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r |
73 | UINT64 ResourceLength;\r | |
74 | EFI_PEI_HOB_POINTERS NextHob;\r | |
75 | EFI_PHYSICAL_ADDRESS FdTop;\r | |
76 | EFI_PHYSICAL_ADDRESS SystemMemoryTop;\r | |
77 | EFI_PHYSICAL_ADDRESS ResourceTop;\r | |
78 | BOOLEAN Found;\r | |
3a6eaccf | 79 | \r |
80 | // Ensure PcdSystemMemorySize has been set\r | |
c357fd6a | 81 | ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);\r |
3a6eaccf | 82 | \r |
3a6eaccf | 83 | //\r |
84 | // Now, the permanent memory has been installed, we can call AllocatePages()\r | |
85 | //\r | |
d269095b | 86 | ResourceAttributes = (\r |
3a6eaccf | 87 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
88 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
89 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
90 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
91 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
92 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r | |
93 | EFI_RESOURCE_ATTRIBUTE_TESTED\r | |
94 | );\r | |
95 | \r | |
d269095b | 96 | // Reserved the memory space occupied by the firmware volume\r |
3a6eaccf | 97 | BuildResourceDescriptorHob (\r |
98 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
d269095b | 99 | ResourceAttributes,\r |
c357fd6a OM |
100 | PcdGet64 (PcdSystemMemoryBase),\r |
101 | PcdGet64 (PcdSystemMemorySize)\r | |
3a6eaccf | 102 | );\r |
103 | \r | |
c357fd6a | 104 | SystemMemoryTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemoryBase) + (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemorySize);\r |
bb5420bb | 105 | FdTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFdBaseAddress) + (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdFdSize);\r |
d269095b | 106 | \r |
107 | // EDK2 does not have the concept of boot firmware copied into DRAM. To avoid the DXE\r | |
108 | // core to overwrite this area we must mark the region with the attribute non-present\r | |
bb5420bb | 109 | if ((PcdGet64 (PcdFdBaseAddress) >= PcdGet64 (PcdSystemMemoryBase)) && (FdTop <= SystemMemoryTop)) {\r |
d269095b | 110 | Found = FALSE;\r |
111 | \r | |
112 | // Search for System Memory Hob that contains the firmware\r | |
113 | NextHob.Raw = GetHobList ();\r | |
114 | while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r | |
115 | if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r | |
bb5420bb | 116 | (PcdGet64 (PcdFdBaseAddress) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r |
d269095b | 117 | (FdTop <= NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength))\r |
118 | {\r | |
119 | ResourceAttributes = NextHob.ResourceDescriptor->ResourceAttribute;\r | |
120 | ResourceLength = NextHob.ResourceDescriptor->ResourceLength;\r | |
121 | ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;\r | |
122 | \r | |
bb5420bb | 123 | if (PcdGet64 (PcdFdBaseAddress) == NextHob.ResourceDescriptor->PhysicalStart) {\r |
d269095b | 124 | if (SystemMemoryTop == FdTop) {\r |
125 | NextHob.ResourceDescriptor->ResourceAttribute = ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT;\r | |
126 | } else {\r | |
127 | // Create the System Memory HOB for the firmware with the non-present attribute\r | |
128 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r | |
129 | ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,\r | |
bb5420bb LL |
130 | PcdGet64 (PcdFdBaseAddress),\r |
131 | PcdGet32 (PcdFdSize));\r | |
d269095b | 132 | \r |
133 | // Top of the FD is system memory available for UEFI\r | |
f92b93c9 | 134 | NextHob.ResourceDescriptor->PhysicalStart += PcdGet32(PcdFdSize);\r |
135 | NextHob.ResourceDescriptor->ResourceLength -= PcdGet32(PcdFdSize);\r | |
d269095b | 136 | }\r |
137 | } else {\r | |
138 | // Create the System Memory HOB for the firmware with the non-present attribute\r | |
139 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r | |
140 | ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,\r | |
bb5420bb LL |
141 | PcdGet64 (PcdFdBaseAddress),\r |
142 | PcdGet32 (PcdFdSize));\r | |
d269095b | 143 | \r |
144 | // Update the HOB\r | |
bb5420bb | 145 | NextHob.ResourceDescriptor->ResourceLength = PcdGet64 (PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;\r |
d269095b | 146 | \r |
147 | // If there is some memory available on the top of the FD then create a HOB\r | |
148 | if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + ResourceLength) {\r | |
149 | // Create the System Memory HOB for the remaining region (top of the FD)\r | |
150 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r | |
151 | ResourceAttributes,\r | |
152 | FdTop,\r | |
153 | ResourceTop - FdTop);\r | |
154 | }\r | |
155 | }\r | |
156 | Found = TRUE;\r | |
157 | break;\r | |
158 | }\r | |
159 | NextHob.Raw = GET_NEXT_HOB (NextHob);\r | |
3a6eaccf | 160 | }\r |
d269095b | 161 | \r |
162 | ASSERT(Found);\r | |
3a6eaccf | 163 | }\r |
164 | \r | |
165 | // Build Memory Allocation Hob\r | |
166 | InitMmu ();\r | |
167 | \r | |
168 | if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r | |
169 | // Optional feature that helps prevent EFI memory map fragmentation.\r | |
170 | BuildMemoryTypeInformationHob ();\r | |
171 | }\r | |
172 | \r | |
173 | return EFI_SUCCESS;\r | |
174 | }\r |