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1e57a462 | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\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 <Chipset/ARM926EJ-S.h>\r | |
16 | #include <Library/ArmLib.h>\r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/MemoryAllocationLib.h>\r | |
19 | #include <Library/DebugLib.h>\r | |
20 | \r | |
21 | VOID\r | |
22 | FillTranslationTable (\r | |
23 | IN UINT32 *TranslationTable,\r | |
24 | IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryRegion\r | |
25 | )\r | |
26 | {\r | |
27 | UINT32 *Entry;\r | |
28 | UINTN Sections;\r | |
29 | UINTN Index;\r | |
30 | UINT32 Attributes;\r | |
31 | UINT32 PhysicalBase = MemoryRegion->PhysicalBase;\r | |
32 | \r | |
33 | switch (MemoryRegion->Attributes) {\r | |
34 | case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:\r | |
35 | Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK;\r | |
36 | break;\r | |
37 | case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:\r | |
38 | Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH;\r | |
39 | break;\r | |
40 | case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:\r | |
41 | Attributes = TT_DESCRIPTOR_SECTION_UNCACHED_UNBUFFERED;\r | |
42 | break;\r | |
43 | case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK:\r | |
44 | case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_THROUGH:\r | |
45 | case ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_UNCACHED_UNBUFFERED:\r | |
46 | ASSERT(0); // Trustzone is not supported on ARMv5\r | |
47 | default:\r | |
48 | Attributes = TT_DESCRIPTOR_SECTION_UNCACHED_UNBUFFERED;\r | |
49 | break;\r | |
50 | }\r | |
51 | \r | |
52 | Entry = TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(TranslationTable, MemoryRegion->VirtualBase);\r | |
53 | Sections = MemoryRegion->Length / TT_DESCRIPTOR_SECTION_SIZE;\r | |
54 | \r | |
55 | // The current code does not support memory region size that is not aligned on TT_DESCRIPTOR_SECTION_SIZE boundary\r | |
56 | ASSERT (MemoryRegion->Length % TT_DESCRIPTOR_SECTION_SIZE == 0);\r | |
57 | \r | |
58 | for (Index = 0; Index < Sections; Index++)\r | |
59 | {\r | |
60 | *Entry++ = TT_DESCRIPTOR_SECTION_BASE_ADDRESS(PhysicalBase) | Attributes;\r | |
61 | PhysicalBase += TT_DESCRIPTOR_SECTION_SIZE;\r | |
62 | }\r | |
63 | }\r | |
64 | \r | |
65 | VOID\r | |
66 | EFIAPI\r | |
67 | ArmConfigureMmu (\r | |
68 | IN ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable,\r | |
69 | OUT VOID **TranslationTableBase OPTIONAL,\r | |
70 | OUT UINTN *TranslationTableSize OPTIONAL\r | |
71 | )\r | |
72 | {\r | |
73 | VOID *TranslationTable;\r | |
74 | \r | |
75 | // Allocate pages for translation table.\r | |
76 | TranslationTable = AllocatePages(EFI_SIZE_TO_PAGES(TRANSLATION_TABLE_SIZE + TRANSLATION_TABLE_ALIGNMENT));\r | |
77 | TranslationTable = (VOID *)(((UINTN)TranslationTable + TRANSLATION_TABLE_ALIGNMENT_MASK) & ~TRANSLATION_TABLE_ALIGNMENT_MASK);\r | |
78 | \r | |
79 | if (TranslationTableBase != NULL) {\r | |
80 | *TranslationTableBase = TranslationTable;\r | |
81 | }\r | |
82 | \r | |
83 | if (TranslationTableBase != NULL) {\r | |
84 | *TranslationTableSize = TRANSLATION_TABLE_SIZE;\r | |
85 | }\r | |
86 | \r | |
87 | ZeroMem(TranslationTable, TRANSLATION_TABLE_SIZE);\r | |
88 | \r | |
89 | ArmCleanInvalidateDataCache();\r | |
90 | ArmInvalidateInstructionCache();\r | |
91 | ArmInvalidateTlb();\r | |
92 | \r | |
93 | ArmDisableDataCache();\r | |
94 | ArmDisableInstructionCache();\r | |
95 | ArmDisableMmu();\r | |
96 | \r | |
97 | // Make sure nothing sneaked into the cache\r | |
98 | ArmCleanInvalidateDataCache();\r | |
99 | ArmInvalidateInstructionCache();\r | |
100 | \r | |
101 | while (MemoryTable->Length != 0) {\r | |
102 | FillTranslationTable(TranslationTable, MemoryTable);\r | |
103 | MemoryTable++;\r | |
104 | }\r | |
105 | \r | |
106 | ArmSetTTBR0(TranslationTable);\r | |
107 | \r | |
108 | ArmSetDomainAccessControl(DOMAIN_ACCESS_CONTROL_NONE(15) |\r | |
109 | DOMAIN_ACCESS_CONTROL_NONE(14) |\r | |
110 | DOMAIN_ACCESS_CONTROL_NONE(13) |\r | |
111 | DOMAIN_ACCESS_CONTROL_NONE(12) |\r | |
112 | DOMAIN_ACCESS_CONTROL_NONE(11) |\r | |
113 | DOMAIN_ACCESS_CONTROL_NONE(10) |\r | |
114 | DOMAIN_ACCESS_CONTROL_NONE( 9) |\r | |
115 | DOMAIN_ACCESS_CONTROL_NONE( 8) |\r | |
116 | DOMAIN_ACCESS_CONTROL_NONE( 7) |\r | |
117 | DOMAIN_ACCESS_CONTROL_NONE( 6) |\r | |
118 | DOMAIN_ACCESS_CONTROL_NONE( 5) |\r | |
119 | DOMAIN_ACCESS_CONTROL_NONE( 4) |\r | |
120 | DOMAIN_ACCESS_CONTROL_NONE( 3) |\r | |
121 | DOMAIN_ACCESS_CONTROL_NONE( 2) |\r | |
122 | DOMAIN_ACCESS_CONTROL_NONE( 1) |\r | |
123 | DOMAIN_ACCESS_CONTROL_MANAGER(0));\r | |
124 | \r | |
125 | ArmEnableInstructionCache();\r | |
126 | ArmEnableDataCache();\r | |
127 | ArmEnableMmu();\r | |
128 | }\r | |
129 | \r | |
130 | \r | |
131 | \r |