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3a6eaccf | 1 | /** @file\r |
5a5440d0 PG |
2 | \r |
3 | Copyright (c) 2011-2015, ARM Limited. All rights reserved.\r | |
4 | \r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
3a6eaccf | 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 | |
40b0b23e MK |
29 | VOID *TranslationTableBase;\r |
30 | UINTN TranslationTableSize;\r | |
31 | RETURN_STATUS Status;\r | |
40a3f38f | 32 | \r |
40b0b23e | 33 | // Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r |
3a6eaccf | 34 | // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r |
6f050ad6 OM |
35 | Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r |
36 | if (EFI_ERROR (Status)) {\r | |
1d2482e1 | 37 | DEBUG ((DEBUG_ERROR, "Error: Failed to enable MMU\n"));\r |
6f050ad6 | 38 | }\r |
3a6eaccf | 39 | }\r |
40 | \r | |
41 | /*++\r | |
42 | \r | |
43 | Routine Description:\r | |
44 | \r | |
45 | \r | |
46 | \r | |
47 | Arguments:\r | |
48 | \r | |
49 | FileHandle - Handle of the file being invoked.\r | |
50 | PeiServices - Describes the list of possible PEI Services.\r | |
51 | \r | |
52 | Returns:\r | |
53 | \r | |
54 | Status - EFI_SUCCESS if the boot mode could be set\r | |
55 | \r | |
56 | --*/\r | |
57 | EFI_STATUS\r | |
58 | EFIAPI\r | |
59 | MemoryPeim (\r | |
40b0b23e MK |
60 | IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r |
61 | IN UINT64 UefiMemorySize\r | |
3a6eaccf | 62 | )\r |
63 | {\r | |
40b0b23e MK |
64 | ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r |
65 | EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r | |
66 | UINT64 ResourceLength;\r | |
67 | EFI_PEI_HOB_POINTERS NextHob;\r | |
68 | EFI_PHYSICAL_ADDRESS FdTop;\r | |
69 | EFI_PHYSICAL_ADDRESS SystemMemoryTop;\r | |
70 | EFI_PHYSICAL_ADDRESS ResourceTop;\r | |
71 | BOOLEAN Found;\r | |
40a3f38f OM |
72 | \r |
73 | // Get Virtual Memory Map from the Platform Library\r | |
74 | ArmPlatformGetVirtualMemoryMap (&MemoryTable);\r | |
3a6eaccf | 75 | \r |
76 | // Ensure PcdSystemMemorySize has been set\r | |
c357fd6a | 77 | ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);\r |
3a6eaccf | 78 | \r |
3a6eaccf | 79 | //\r |
80 | // Now, the permanent memory has been installed, we can call AllocatePages()\r | |
81 | //\r | |
d269095b | 82 | ResourceAttributes = (\r |
40b0b23e MK |
83 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
84 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
85 | EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r | |
86 | EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r | |
87 | EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |\r | |
88 | EFI_RESOURCE_ATTRIBUTE_TESTED\r | |
89 | );\r | |
3a6eaccf | 90 | \r |
40a3f38f OM |
91 | //\r |
92 | // Check if the resource for the main system memory has been declared\r | |
93 | //\r | |
40b0b23e | 94 | Found = FALSE;\r |
40a3f38f OM |
95 | NextHob.Raw = GetHobList ();\r |
96 | while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r | |
97 | if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r | |
98 | (PcdGet64 (PcdSystemMemoryBase) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r | |
99 | (NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength <= PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize)))\r | |
100 | {\r | |
101 | Found = TRUE;\r | |
102 | break;\r | |
103 | }\r | |
40b0b23e | 104 | \r |
40a3f38f OM |
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 | |
40b0b23e MK |
111 | EFI_RESOURCE_SYSTEM_MEMORY,\r |
112 | ResourceAttributes,\r | |
113 | PcdGet64 (PcdSystemMemoryBase),\r | |
114 | PcdGet64 (PcdSystemMemorySize)\r | |
115 | );\r | |
40a3f38f OM |
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 | |
40b0b23e | 123 | FdTop = (EFI_PHYSICAL_ADDRESS)PcdGet64 (PcdFdBaseAddress) + (EFI_PHYSICAL_ADDRESS)PcdGet32 (PcdFdSize);\r |
e7f0a829 AB |
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 | |
40b0b23e MK |
139 | ResourceLength = NextHob.ResourceDescriptor->ResourceLength;\r |
140 | ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;\r | |
e7f0a829 AB |
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 | |
40b0b23e MK |
145 | BuildResourceDescriptorHob (\r |
146 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
147 | ResourceAttributes,\r | |
148 | PcdGet64 (PcdFdBaseAddress),\r | |
149 | PcdGet32 (PcdFdSize)\r | |
150 | );\r | |
e7f0a829 AB |
151 | \r |
152 | // Top of the FD is system memory available for UEFI\r | |
40b0b23e MK |
153 | NextHob.ResourceDescriptor->PhysicalStart += PcdGet32 (PcdFdSize);\r |
154 | NextHob.ResourceDescriptor->ResourceLength -= PcdGet32 (PcdFdSize);\r | |
e7f0a829 AB |
155 | }\r |
156 | } else {\r | |
44d2e8d7 | 157 | // Create the System Memory HOB for the firmware\r |
40b0b23e MK |
158 | BuildResourceDescriptorHob (\r |
159 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
160 | ResourceAttributes,\r | |
161 | PcdGet64 (PcdFdBaseAddress),\r | |
162 | PcdGet32 (PcdFdSize)\r | |
163 | );\r | |
e7f0a829 AB |
164 | \r |
165 | // Update the HOB\r | |
166 | NextHob.ResourceDescriptor->ResourceLength = PcdGet64 (PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;\r | |
167 | \r | |
168 | // If there is some memory available on the top of the FD then create a HOB\r | |
169 | if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + ResourceLength) {\r | |
170 | // Create the System Memory HOB for the remaining region (top of the FD)\r | |
40b0b23e MK |
171 | BuildResourceDescriptorHob (\r |
172 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
173 | ResourceAttributes,\r | |
174 | FdTop,\r | |
175 | ResourceTop - FdTop\r | |
176 | );\r | |
e7f0a829 AB |
177 | }\r |
178 | }\r | |
44d2e8d7 AB |
179 | \r |
180 | // Mark the memory covering the Firmware Device as boot services data\r | |
40b0b23e MK |
181 | BuildMemoryAllocationHob (\r |
182 | PcdGet64 (PcdFdBaseAddress),\r | |
183 | PcdGet32 (PcdFdSize),\r | |
184 | EfiBootServicesData\r | |
185 | );\r | |
44d2e8d7 | 186 | \r |
e7f0a829 AB |
187 | Found = TRUE;\r |
188 | break;\r | |
189 | }\r | |
40b0b23e | 190 | \r |
e7f0a829 AB |
191 | NextHob.Raw = GET_NEXT_HOB (NextHob);\r |
192 | }\r | |
193 | \r | |
40b0b23e | 194 | ASSERT (Found);\r |
e7f0a829 AB |
195 | }\r |
196 | \r | |
3a6eaccf | 197 | // Build Memory Allocation Hob\r |
40a3f38f | 198 | InitMmu (MemoryTable);\r |
3a6eaccf | 199 | \r |
200 | if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r | |
201 | // Optional feature that helps prevent EFI memory map fragmentation.\r | |
202 | BuildMemoryTypeInformationHob ();\r | |
203 | }\r | |
204 | \r | |
205 | return EFI_SUCCESS;\r | |
206 | }\r |