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3a6eaccf | 1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved.\r | |
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 | |
23 | #include <Chipset/ArmV7.h>\r | |
24 | \r | |
25 | VOID\r | |
26 | BuildMemoryTypeInformationHob (\r | |
27 | VOID\r | |
28 | );\r | |
29 | \r | |
30 | VOID\r | |
31 | InitMmu (\r | |
32 | VOID\r | |
33 | )\r | |
34 | {\r | |
35 | ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r | |
36 | VOID *TranslationTableBase;\r | |
37 | UINTN TranslationTableSize;\r | |
38 | \r | |
39 | // Get Virtual Memory Map from the Platform Library\r | |
40 | ArmPlatformGetVirtualMemoryMap(&MemoryTable);\r | |
41 | \r | |
42 | //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r | |
43 | // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r | |
44 | ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r | |
45 | }\r | |
46 | \r | |
47 | /*++\r | |
48 | \r | |
49 | Routine Description:\r | |
50 | \r | |
51 | \r | |
52 | \r | |
53 | Arguments:\r | |
54 | \r | |
55 | FileHandle - Handle of the file being invoked.\r | |
56 | PeiServices - Describes the list of possible PEI Services.\r | |
57 | \r | |
58 | Returns:\r | |
59 | \r | |
60 | Status - EFI_SUCCESS if the boot mode could be set\r | |
61 | \r | |
62 | --*/\r | |
63 | EFI_STATUS\r | |
64 | EFIAPI\r | |
65 | MemoryPeim (\r | |
66 | IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r | |
67 | IN UINT64 UefiMemorySize\r | |
68 | )\r | |
69 | {\r | |
70 | EFI_STATUS Status;\r | |
71 | EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;\r | |
72 | ARM_SYSTEM_MEMORY_REGION_DESCRIPTOR* EfiMemoryMap;\r | |
73 | UINTN Index;\r | |
74 | EFI_PHYSICAL_ADDRESS SystemMemoryTop;\r | |
75 | \r | |
76 | // Ensure PcdSystemMemorySize has been set\r | |
77 | ASSERT (PcdGet32 (PcdSystemMemorySize) != 0);\r | |
78 | \r | |
79 | SystemMemoryTop = (EFI_PHYSICAL_ADDRESS)((UINT32)PcdGet32 (PcdSystemMemoryBase) + (UINT32)PcdGet32 (PcdSystemMemorySize));\r | |
80 | \r | |
81 | //\r | |
82 | // Now, the permanent memory has been installed, we can call AllocatePages()\r | |
83 | //\r | |
84 | Attributes = (\r | |
85 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r | |
86 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
87 | EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r | |
88 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
89 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
90 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r | |
91 | EFI_RESOURCE_ATTRIBUTE_TESTED\r | |
92 | );\r | |
93 | \r | |
94 | // If it is not a standalone build we must reserved the space above the base address of the firmware volume\r | |
95 | if (!PcdGet32(PcdStandalone)) {\r | |
96 | // Check if firmware volume has not be copied at the top of DRAM then we must reserve the extra space\r | |
97 | // between the firmware and the top\r | |
98 | if (SystemMemoryTop != PcdGet32 (PcdNormalFdBaseAddress) + PcdGet32 (PcdNormalFdSize)) {\r | |
99 | BuildResourceDescriptorHob (\r | |
100 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
101 | Attributes & (~EFI_RESOURCE_ATTRIBUTE_TESTED),\r | |
102 | PcdGet32 (PcdNormalFdBaseAddress) + PcdGet32 (PcdNormalFdSize),\r | |
103 | SystemMemoryTop - (PcdGet32 (PcdNormalFdBaseAddress) + PcdGet32 (PcdNormalFdSize))\r | |
104 | );\r | |
105 | }\r | |
106 | \r | |
107 | // Reserved the memory space occupied by the firmware volume\r | |
108 | BuildResourceDescriptorHob (\r | |
109 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
110 | Attributes & (~EFI_RESOURCE_ATTRIBUTE_PRESENT),\r | |
111 | (UINT32)PcdGet32 (PcdNormalFdBaseAddress),\r | |
112 | (UINT32)PcdGet32 (PcdNormalFdSize)\r | |
113 | );\r | |
114 | }\r | |
115 | \r | |
116 | // Check there is no overlap between UEFI and Fix Address Regions\r | |
117 | ASSERT (PcdGet32 (PcdSystemMemoryBase) + PcdGet32 (PcdSystemMemoryFixRegionSize) <= UefiMemoryBase);\r | |
118 | \r | |
119 | // Reserved the UEFI Memory Region\r | |
120 | BuildResourceDescriptorHob (\r | |
121 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
122 | Attributes,\r | |
123 | UefiMemoryBase,\r | |
124 | UefiMemorySize\r | |
125 | );\r | |
126 | \r | |
127 | // Reserved the Fix Address Region\r | |
128 | BuildResourceDescriptorHob (\r | |
129 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
130 | Attributes,\r | |
131 | PcdGet32 (PcdSystemMemoryBase),\r | |
132 | PcdGet32 (PcdSystemMemoryFixRegionSize)\r | |
133 | );\r | |
134 | \r | |
135 | // Reserved the memory between UEFI and Fix Address regions\r | |
136 | if (PcdGet32 (PcdSystemMemoryBase) + PcdGet32 (PcdSystemMemoryFixRegionSize) != UefiMemoryBase) {\r | |
137 | BuildResourceDescriptorHob (\r | |
138 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
139 | Attributes & (~EFI_RESOURCE_ATTRIBUTE_TESTED),\r | |
140 | PcdGet32 (PcdSystemMemoryBase) + PcdGet32 (PcdSystemMemoryFixRegionSize),\r | |
141 | UefiMemoryBase - (PcdGet32 (PcdSystemMemoryBase) + PcdGet32 (PcdSystemMemoryFixRegionSize))\r | |
142 | );\r | |
143 | }\r | |
144 | \r | |
145 | // If a platform has system memory extensions, it can declare those in this function\r | |
146 | Status = ArmPlatformGetAdditionalSystemMemory (&EfiMemoryMap);\r | |
147 | if (!EFI_ERROR(Status)) {\r | |
148 | // Install the EFI Memory Map\r | |
149 | for (Index = 0; EfiMemoryMap[Index].ResourceAttribute != 0; Index++) {\r | |
150 | BuildResourceDescriptorHob (\r | |
151 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
152 | EfiMemoryMap[Index].ResourceAttribute,\r | |
153 | EfiMemoryMap[Index].PhysicalStart,\r | |
154 | EfiMemoryMap[Index].NumberOfBytes\r | |
155 | );\r | |
156 | }\r | |
157 | FreePool (EfiMemoryMap);\r | |
158 | }\r | |
159 | \r | |
160 | // Build Memory Allocation Hob\r | |
161 | InitMmu ();\r | |
162 | \r | |
163 | if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r | |
164 | // Optional feature that helps prevent EFI memory map fragmentation.\r | |
165 | BuildMemoryTypeInformationHob ();\r | |
166 | }\r | |
167 | \r | |
168 | return EFI_SUCCESS;\r | |
169 | }\r |