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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2014-2017, Linaro Limited. All rights reserved.\r | |
4 | \r | |
5 | This program and the accompanying materials are licensed and made available\r | |
6 | under the terms and conditions of the BSD License which accompanies this\r | |
7 | 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 <Base.h>\r | |
16 | #include <Library/ArmLib.h>\r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/MemoryAllocationLib.h>\r | |
20 | \r | |
21 | // Number of Virtual Memory Map Descriptors\r | |
22 | #define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 5\r | |
23 | \r | |
24 | EFI_PHYSICAL_ADDRESS\r | |
25 | ArmGetPhysAddrTop (\r | |
26 | VOID\r | |
27 | );\r | |
28 | \r | |
29 | /**\r | |
30 | Return the Virtual Memory Map of your platform\r | |
31 | \r | |
32 | This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU\r | |
33 | on your platform.\r | |
34 | \r | |
35 | @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR\r | |
36 | describing a Physical-to-Virtual Memory\r | |
37 | mapping. This array must be ended by a\r | |
38 | zero-filled entry. The allocated memory\r | |
39 | will not be freed.\r | |
40 | \r | |
41 | **/\r | |
42 | VOID\r | |
43 | ArmVirtGetMemoryMap (\r | |
44 | OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap\r | |
45 | )\r | |
46 | {\r | |
47 | ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;\r | |
48 | UINT64 TopOfMemory;\r | |
49 | \r | |
50 | ASSERT (VirtualMemoryMap != NULL);\r | |
51 | \r | |
52 | VirtualMemoryTable = AllocatePool (sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *\r | |
53 | MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);\r | |
54 | \r | |
55 | if (VirtualMemoryTable == NULL) {\r | |
56 | DEBUG ((DEBUG_ERROR, "%a: Error: Failed AllocatePool()\n", __FUNCTION__));\r | |
57 | return;\r | |
58 | }\r | |
59 | \r | |
60 | // System DRAM\r | |
61 | VirtualMemoryTable[0].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);\r | |
62 | VirtualMemoryTable[0].VirtualBase = VirtualMemoryTable[0].PhysicalBase;\r | |
63 | VirtualMemoryTable[0].Length = PcdGet64 (PcdSystemMemorySize);\r | |
64 | VirtualMemoryTable[0].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r | |
65 | \r | |
66 | DEBUG ((DEBUG_INFO, "%a: Dumping System DRAM Memory Map:\n"\r | |
67 | "\tPhysicalBase: 0x%lX\n"\r | |
68 | "\tVirtualBase: 0x%lX\n"\r | |
69 | "\tLength: 0x%lX\n",\r | |
70 | __FUNCTION__,\r | |
71 | VirtualMemoryTable[0].PhysicalBase,\r | |
72 | VirtualMemoryTable[0].VirtualBase,\r | |
73 | VirtualMemoryTable[0].Length));\r | |
74 | \r | |
75 | // Peripheral space before DRAM\r | |
76 | VirtualMemoryTable[1].PhysicalBase = 0x0;\r | |
77 | VirtualMemoryTable[1].VirtualBase = 0x0;\r | |
78 | VirtualMemoryTable[1].Length = VirtualMemoryTable[0].PhysicalBase;\r | |
79 | VirtualMemoryTable[1].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;\r | |
80 | \r | |
81 | // Peripheral space after DRAM\r | |
82 | TopOfMemory = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize),\r | |
83 | ArmGetPhysAddrTop ());\r | |
84 | VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length;\r | |
85 | VirtualMemoryTable[2].VirtualBase = VirtualMemoryTable[2].PhysicalBase;\r | |
86 | VirtualMemoryTable[2].Length = TopOfMemory -\r | |
87 | VirtualMemoryTable[2].PhysicalBase;\r | |
88 | VirtualMemoryTable[2].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;\r | |
89 | \r | |
90 | // Remap the FD region as normal executable memory\r | |
91 | VirtualMemoryTable[3].PhysicalBase = PcdGet64 (PcdFdBaseAddress);\r | |
92 | VirtualMemoryTable[3].VirtualBase = VirtualMemoryTable[3].PhysicalBase;\r | |
93 | VirtualMemoryTable[3].Length = FixedPcdGet32 (PcdFdSize);\r | |
94 | VirtualMemoryTable[3].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;\r | |
95 | \r | |
96 | // End of Table\r | |
97 | ZeroMem (&VirtualMemoryTable[4], sizeof (ARM_MEMORY_REGION_DESCRIPTOR));\r | |
98 | \r | |
99 | *VirtualMemoryMap = VirtualMemoryTable;\r | |
100 | }\r |