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1 | /** @file\r | |
2 | This module provide Hand-Off Block manupulation.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation \r | |
5 | All rights reserved. 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 "PeiMain.h"\r | |
16 | \r | |
17 | /**\r | |
18 | \r | |
19 | Gets the pointer to the HOB List.\r | |
20 | \r | |
21 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
22 | @param HobList Pointer to the HOB List.\r | |
23 | \r | |
24 | @retval EFI_SUCCESS Get the pointer of HOB List\r | |
25 | @retval EFI_NOT_AVAILABLE_YET the HOB List is not yet published\r | |
26 | @retval EFI_INVALID_PARAMETER HobList is NULL (in debug mode)\r | |
27 | \r | |
28 | **/\r | |
29 | EFI_STATUS\r | |
30 | EFIAPI\r | |
31 | PeiGetHobList (\r | |
32 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
33 | IN OUT VOID **HobList\r | |
34 | )\r | |
35 | {\r | |
36 | PEI_CORE_INSTANCE *PrivateData;\r | |
37 | \r | |
38 | //\r | |
39 | // Only check this parameter in debug mode\r | |
40 | //\r | |
41 | \r | |
42 | DEBUG_CODE_BEGIN (); \r | |
43 | if (HobList == NULL) {\r | |
44 | return EFI_INVALID_PARAMETER;\r | |
45 | }\r | |
46 | DEBUG_CODE_END ();\r | |
47 | \r | |
48 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
49 | \r | |
50 | *HobList = PrivateData->HobList.Raw;\r | |
51 | \r | |
52 | return EFI_SUCCESS; \r | |
53 | }\r | |
54 | \r | |
55 | \r | |
56 | /**\r | |
57 | Add a new HOB to the HOB List.\r | |
58 | \r | |
59 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
60 | @param Type Type of the new HOB.\r | |
61 | @param Length Length of the new HOB to allocate.\r | |
62 | @param Hob Pointer to the new HOB.\r | |
63 | \r | |
64 | @return EFI_SUCCESS Success to create hob.\r | |
65 | @retval EFI_INVALID_PARAMETER if Hob is NULL\r | |
66 | @retval EFI_NOT_AVAILABLE_YET if HobList is still not available.\r | |
67 | @retval EFI_OUT_OF_RESOURCES if there is no more memory to grow the Hoblist.\r | |
68 | \r | |
69 | **/\r | |
70 | EFI_STATUS\r | |
71 | EFIAPI\r | |
72 | PeiCreateHob (\r | |
73 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
74 | IN UINT16 Type,\r | |
75 | IN UINT16 Length,\r | |
76 | IN OUT VOID **Hob\r | |
77 | )\r | |
78 | {\r | |
79 | EFI_STATUS Status;\r | |
80 | EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;\r | |
81 | EFI_HOB_GENERIC_HEADER *HobEnd;\r | |
82 | EFI_PHYSICAL_ADDRESS FreeMemory;\r | |
83 | \r | |
84 | \r | |
85 | Status = PeiGetHobList (PeiServices, Hob);\r | |
86 | if (EFI_ERROR(Status)) {\r | |
87 | return Status;\r | |
88 | }\r | |
89 | \r | |
90 | HandOffHob = *Hob;\r | |
91 | \r | |
92 | Length = (UINT16)((Length + 0x7) & (~0x7));\r | |
93 | \r | |
94 | FreeMemory = HandOffHob->EfiFreeMemoryTop -\r | |
95 | HandOffHob->EfiFreeMemoryBottom;\r | |
96 | \r | |
97 | if (FreeMemory < Length) {\r | |
98 | DEBUG ((EFI_D_ERROR, "PeiCreateHob fail: Length - 0x%08x\n", (UINTN)Length));\r | |
99 | DEBUG ((EFI_D_ERROR, " FreeMemoryTop - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryTop));\r | |
100 | DEBUG ((EFI_D_ERROR, " FreeMemoryBottom - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryBottom));\r | |
101 | return EFI_OUT_OF_RESOURCES;\r | |
102 | }\r | |
103 | \r | |
104 | *Hob = (VOID*) (UINTN) HandOffHob->EfiEndOfHobList;\r | |
105 | ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobType = Type;\r | |
106 | ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobLength = Length;\r | |
107 | ((EFI_HOB_GENERIC_HEADER*) *Hob)->Reserved = 0;\r | |
108 | \r | |
109 | HobEnd = (EFI_HOB_GENERIC_HEADER*) ((UINTN) *Hob + Length);\r | |
110 | HandOffHob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r | |
111 | \r | |
112 | HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;\r | |
113 | HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);\r | |
114 | HobEnd->Reserved = 0;\r | |
115 | HobEnd++;\r | |
116 | HandOffHob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r | |
117 | \r | |
118 | return EFI_SUCCESS; \r | |
119 | }\r | |
120 | \r | |
121 | /**\r | |
122 | \r | |
123 | Builds a Handoff Information Table HOB\r | |
124 | \r | |
125 | @param BootMode - Current Bootmode\r | |
126 | @param MemoryBegin - Start Memory Address.\r | |
127 | @param MemoryLength - Length of Memory.\r | |
128 | \r | |
129 | @return EFI_SUCCESS Always success to initialize HOB.\r | |
130 | \r | |
131 | **/\r | |
132 | EFI_STATUS\r | |
133 | PeiCoreBuildHobHandoffInfoTable (\r | |
134 | IN EFI_BOOT_MODE BootMode,\r | |
135 | IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r | |
136 | IN UINT64 MemoryLength\r | |
137 | )\r | |
138 | {\r | |
139 | EFI_HOB_HANDOFF_INFO_TABLE *Hob;\r | |
140 | EFI_HOB_GENERIC_HEADER *HobEnd;\r | |
141 | \r | |
142 | Hob = (VOID *)(UINTN)MemoryBegin;\r | |
143 | HobEnd = (EFI_HOB_GENERIC_HEADER*) (Hob+1);\r | |
144 | Hob->Header.HobType = EFI_HOB_TYPE_HANDOFF;\r | |
145 | Hob->Header.HobLength = sizeof(EFI_HOB_HANDOFF_INFO_TABLE);\r | |
146 | Hob->Header.Reserved = 0;\r | |
147 | \r | |
148 | HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;\r | |
149 | HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);\r | |
150 | HobEnd->Reserved = 0;\r | |
151 | \r | |
152 | Hob->Version = EFI_HOB_HANDOFF_TABLE_VERSION;\r | |
153 | Hob->BootMode = BootMode;\r | |
154 | \r | |
155 | Hob->EfiMemoryTop = MemoryBegin + MemoryLength;\r | |
156 | Hob->EfiMemoryBottom = MemoryBegin;\r | |
157 | Hob->EfiFreeMemoryTop = MemoryBegin + MemoryLength;\r | |
158 | Hob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) (HobEnd + 1);\r | |
159 | Hob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r | |
160 | \r | |
161 | return EFI_SUCCESS;\r | |
162 | }\r |