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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 |
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 | |
5db1cce1 | 17 | #include <Library/ArmMmuLib.h>\r |
3a6eaccf | 18 | #include <Library/ArmPlatformLib.h>\r |
19 | #include <Library/DebugLib.h>\r | |
20 | #include <Library/HobLib.h>\r | |
21 | #include <Library/MemoryAllocationLib.h>\r | |
22 | #include <Library/PcdLib.h>\r | |
23 | \r | |
3a6eaccf | 24 | VOID\r |
25 | BuildMemoryTypeInformationHob (\r | |
26 | VOID\r | |
27 | );\r | |
28 | \r | |
40a3f38f | 29 | STATIC\r |
3a6eaccf | 30 | VOID\r |
31 | InitMmu (\r | |
40a3f38f | 32 | IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable\r |
3a6eaccf | 33 | )\r |
34 | {\r | |
40a3f38f | 35 | \r |
3a6eaccf | 36 | VOID *TranslationTableBase;\r |
37 | UINTN TranslationTableSize;\r | |
6f050ad6 | 38 | RETURN_STATUS Status;\r |
3a6eaccf | 39 | \r |
3a6eaccf | 40 | //Note: Because we called PeiServicesInstallPeiMemory() before to call InitMmu() the MMU Page Table resides in\r |
41 | // DRAM (even at the top of DRAM as it is the first permanent memory allocation)\r | |
6f050ad6 OM |
42 | Status = ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);\r |
43 | if (EFI_ERROR (Status)) {\r | |
44 | DEBUG ((EFI_D_ERROR, "Error: Failed to enable MMU\n"));\r | |
45 | }\r | |
3a6eaccf | 46 | }\r |
47 | \r | |
48 | /*++\r | |
49 | \r | |
50 | Routine Description:\r | |
51 | \r | |
52 | \r | |
53 | \r | |
54 | Arguments:\r | |
55 | \r | |
56 | FileHandle - Handle of the file being invoked.\r | |
57 | PeiServices - Describes the list of possible PEI Services.\r | |
58 | \r | |
59 | Returns:\r | |
60 | \r | |
61 | Status - EFI_SUCCESS if the boot mode could be set\r | |
62 | \r | |
63 | --*/\r | |
64 | EFI_STATUS\r | |
65 | EFIAPI\r | |
66 | MemoryPeim (\r | |
67 | IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,\r | |
68 | IN UINT64 UefiMemorySize\r | |
69 | )\r | |
70 | {\r | |
40a3f38f OM |
71 | ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;\r |
72 | EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;\r | |
40a3f38f | 73 | EFI_PEI_HOB_POINTERS NextHob;\r |
40a3f38f OM |
74 | BOOLEAN Found;\r |
75 | \r | |
76 | // Get Virtual Memory Map from the Platform Library\r | |
77 | ArmPlatformGetVirtualMemoryMap (&MemoryTable);\r | |
3a6eaccf | 78 | \r |
79 | // Ensure PcdSystemMemorySize has been set\r | |
c357fd6a | 80 | ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);\r |
3a6eaccf | 81 | \r |
3a6eaccf | 82 | //\r |
83 | // Now, the permanent memory has been installed, we can call AllocatePages()\r | |
84 | //\r | |
d269095b | 85 | ResourceAttributes = (\r |
3a6eaccf | 86 | EFI_RESOURCE_ATTRIBUTE_PRESENT |\r |
87 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r | |
3a6eaccf | 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 | |
40a3f38f OM |
94 | //\r |
95 | // Check if the resource for the main system memory has been declared\r | |
96 | //\r | |
97 | Found = FALSE;\r | |
98 | NextHob.Raw = GetHobList ();\r | |
99 | while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {\r | |
100 | if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r | |
101 | (PcdGet64 (PcdSystemMemoryBase) >= NextHob.ResourceDescriptor->PhysicalStart) &&\r | |
102 | (NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength <= PcdGet64 (PcdSystemMemoryBase) + PcdGet64 (PcdSystemMemorySize)))\r | |
103 | {\r | |
104 | Found = TRUE;\r | |
105 | break;\r | |
106 | }\r | |
107 | NextHob.Raw = GET_NEXT_HOB (NextHob);\r | |
108 | }\r | |
109 | \r | |
110 | if (!Found) {\r | |
111 | // Reserved the memory space occupied by the firmware volume\r | |
112 | BuildResourceDescriptorHob (\r | |
113 | EFI_RESOURCE_SYSTEM_MEMORY,\r | |
114 | ResourceAttributes,\r | |
115 | PcdGet64 (PcdSystemMemoryBase),\r | |
116 | PcdGet64 (PcdSystemMemorySize)\r | |
117 | );\r | |
118 | }\r | |
119 | \r | |
3a6eaccf | 120 | // Build Memory Allocation Hob\r |
40a3f38f | 121 | InitMmu (MemoryTable);\r |
3a6eaccf | 122 | \r |
123 | if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {\r | |
124 | // Optional feature that helps prevent EFI memory map fragmentation.\r | |
125 | BuildMemoryTypeInformationHob ();\r | |
126 | }\r | |
127 | \r | |
128 | return EFI_SUCCESS;\r | |
129 | }\r |