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3a6eaccf | 1 | /** @file\r |
2 | *\r | |
40a3f38f | 3 | * Copyright (c) 2011-2015, ARM Limited. All rights reserved.\r |
3a6eaccf | 4 | *\r |
f4dfad05 | 5 | * SPDX-License-Identifier: BSD-2-Clause-Patent\r |
3a6eaccf | 6 | *\r |
7 | **/\r | |
8 | \r | |
9 | #include <PiPei.h>\r | |
10 | \r | |
5db1cce1 | 11 | #include <Library/ArmMmuLib.h>\r |
3a6eaccf | 12 | #include <Library/ArmPlatformLib.h>\r |
13 | #include <Library/DebugLib.h>\r | |
14 | #include <Library/HobLib.h>\r | |
15 | #include <Library/MemoryAllocationLib.h>\r | |
16 | #include <Library/PcdLib.h>\r | |
17 | \r | |
3a6eaccf | 18 | VOID\r |
19 | BuildMemoryTypeInformationHob (\r | |
20 | VOID\r | |
21 | );\r | |
22 | \r | |
40a3f38f | 23 | STATIC\r |
3a6eaccf | 24 | VOID\r |
25 | InitMmu (\r | |
40a3f38f | 26 | IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable\r |
3a6eaccf | 27 | )\r |
28 | {\r | |
40a3f38f | 29 | \r |
3a6eaccf | 30 | VOID *TranslationTableBase;\r |
31 | UINTN TranslationTableSize;\r | |
6f050ad6 | 32 | RETURN_STATUS Status;\r |
3a6eaccf | 33 | \r |
3a6eaccf | 34 | //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r |
35 | // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r | |
6f050ad6 OM |
36 | Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r |
37 | if (EFI_ERROR (Status)) {\r | |
38 | DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));\r | |
39 | }\r | |
3a6eaccf | 40 | }\r |
41 | \r | |
42 | /*++\r | |
43 | \r | |
44 | Routine Description:\r | |
45 | \r | |
46 | \r | |
47 | \r | |
48 | Arguments:\r | |
49 | \r | |
50 | FileHandle - Handle of the file being invoked.\r | |
51 | PeiServices - Describes the list of possible PEI Services.\r | |
52 | \r | |
53 | Returns:\r | |
54 | \r | |
55 | Status - EFI_SUCCESS if the boot mode could be set\r | |
56 | \r | |
57 | --*/\r | |
58 | EFI_STATUS\r | |
59 | EFIAPI\r | |
60 | MemoryPeim (\r | |
61 | IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r | |
62 | IN UINT64 UefiMemorySize\r | |
63 | )\r | |
64 | {\r | |
40a3f38f OM |
65 | ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r |
66 | EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r | |
e7f0a829 | 67 | UINT64 ResourceLength;\r |
40a3f38f | 68 | EFI_PEI_HOB_POINTERS NextHob;\r |
e7f0a829 AB |
69 | EFI_PHYSICAL_ADDRESS FdTop;\r |
70 | EFI_PHYSICAL_ADDRESS SystemMemoryTop;\r | |
71 | EFI_PHYSICAL_ADDRESS ResourceTop;\r | |
40a3f38f OM |
72 | BOOLEAN Found;\r |
73 | \r | |
74 | // Get Virtual Memory Map from the Platform Library\r | |
75 | ArmPlatformGetVirtualMemoryMap (&MemoryTable);\r | |
3a6eaccf | 76 | \r |
77 | // Ensure PcdSystemMemorySize has been set\r | |
c357fd6a | 78 | ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);\r |
3a6eaccf | 79 | \r |
3a6eaccf | 80 | //\r |
81 | // Now, the permanent memory has been installed, we can call AllocatePages()\r | |
82 | //\r | |
d269095b | 83 | ResourceAttributes = (\r |
3a6eaccf | 84 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
85 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
3a6eaccf | 86 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r |
87 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
88 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r | |
89 | EFI_RESOURCE_ATTRIBUTE_TESTED\r | |
90 | );\r | |
91 | \r | |
40a3f38f OM |
92 | //\r |
93 | // Check if the resource for the main system memory has been declared\r | |
94 | //\r | |
95 | Found = FALSE;\r | |
96 | NextHob.Raw = GetHobList ();\r | |
97 | while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r | |
98 | if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r | |
99 | (PcdGet64 (PcdSystemMemoryBase) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r | |
100 | (NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength <= PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize)))\r | |
101 | {\r | |
102 | Found = TRUE;\r | |
103 | break;\r | |
104 | }\r | |
105 | NextHob.Raw = GET_NEXT_HOB (NextHob);\r | |
106 | }\r | |
107 | \r | |
108 | if (!Found) {\r | |
109 | // Reserved the memory space occupied by the firmware volume\r | |
110 | BuildResourceDescriptorHob (\r | |
111 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
112 | ResourceAttributes,\r | |
113 | PcdGet64 (PcdSystemMemoryBase),\r | |
114 | PcdGet64 (PcdSystemMemorySize)\r | |
115 | );\r | |
116 | }\r | |
117 | \r | |
e7f0a829 AB |
118 | //\r |
119 | // Reserved the memory space occupied by the firmware volume\r | |
120 | //\r | |
121 | \r | |
122 | SystemMemoryTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemoryBase) + (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdSystemMemorySize);\r | |
123 | FdTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFdBaseAddress) + (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdFdSize);\r | |
124 | \r | |
125 | // EDK2 does not have the concept of boot firmware copied into DRAM. To avoid the DXE\r | |
44d2e8d7 AB |
126 | // core to overwrite this area we must create a memory allocation HOB for the region,\r |
127 | // but this only works if we split off the underlying resource descriptor as well.\r | |
e7f0a829 AB |
128 | if ((PcdGet64 (PcdFdBaseAddress) >= PcdGet64 (PcdSystemMemoryBase)) && (FdTop <= SystemMemoryTop)) {\r |
129 | Found = FALSE;\r | |
130 | \r | |
131 | // Search for System Memory Hob that contains the firmware\r | |
132 | NextHob.Raw = GetHobList ();\r | |
133 | while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r | |
134 | if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r | |
135 | (PcdGet64 (PcdFdBaseAddress) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r | |
136 | (FdTop <= NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength))\r | |
137 | {\r | |
138 | ResourceAttributes = NextHob.ResourceDescriptor->ResourceAttribute;\r | |
139 | ResourceLength = NextHob.ResourceDescriptor->ResourceLength;\r | |
140 | ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;\r | |
141 | \r | |
142 | if (PcdGet64 (PcdFdBaseAddress) == NextHob.ResourceDescriptor->PhysicalStart) {\r | |
44d2e8d7 AB |
143 | if (SystemMemoryTop != FdTop) {\r |
144 | // Create the System Memory HOB for the firmware\r | |
e7f0a829 | 145 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r |
44d2e8d7 | 146 | ResourceAttributes,\r |
e7f0a829 AB |
147 | PcdGet64 (PcdFdBaseAddress),\r |
148 | PcdGet32 (PcdFdSize));\r | |
149 | \r | |
150 | // Top of the FD is system memory available for UEFI\r | |
151 | NextHob.ResourceDescriptor->PhysicalStart += PcdGet32(PcdFdSize);\r | |
152 | NextHob.ResourceDescriptor->ResourceLength -= PcdGet32(PcdFdSize);\r | |
153 | }\r | |
154 | } else {\r | |
44d2e8d7 | 155 | // Create the System Memory HOB for the firmware\r |
e7f0a829 | 156 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r |
44d2e8d7 | 157 | ResourceAttributes,\r |
e7f0a829 AB |
158 | PcdGet64 (PcdFdBaseAddress),\r |
159 | PcdGet32 (PcdFdSize));\r | |
160 | \r | |
161 | // Update the HOB\r | |
162 | NextHob.ResourceDescriptor->ResourceLength = PcdGet64 (PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;\r | |
163 | \r | |
164 | // If there is some memory available on the top of the FD then create a HOB\r | |
165 | if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + ResourceLength) {\r | |
166 | // Create the System Memory HOB for the remaining region (top of the FD)\r | |
167 | BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,\r | |
168 | ResourceAttributes,\r | |
169 | FdTop,\r | |
170 | ResourceTop - FdTop);\r | |
171 | }\r | |
172 | }\r | |
44d2e8d7 AB |
173 | \r |
174 | // Mark the memory covering the Firmware Device as boot services data\r | |
175 | BuildMemoryAllocationHob (PcdGet64 (PcdFdBaseAddress),\r | |
176 | PcdGet32 (PcdFdSize),\r | |
177 | EfiBootServicesData);\r | |
178 | \r | |
e7f0a829 AB |
179 | Found = TRUE;\r |
180 | break;\r | |
181 | }\r | |
182 | NextHob.Raw = GET_NEXT_HOB (NextHob);\r | |
183 | }\r | |
184 | \r | |
185 | ASSERT(Found);\r | |
186 | }\r | |
187 | \r | |
3a6eaccf | 188 | // Build Memory Allocation Hob\r |
40a3f38f | 189 | InitMmu (MemoryTable);\r |
3a6eaccf | 190 | \r |
191 | if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r | |
192 | // Optional feature that helps prevent EFI memory map fragmentation.\r | |
193 | BuildMemoryTypeInformationHob ();\r | |
194 | }\r | |
195 | \r | |
196 | return EFI_SUCCESS;\r | |
197 | }\r |