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615c6dd0 | 1 | /** @file\r |
b1f6a7c6 | 2 | EFI PEI Core memory services\r |
3 | \r | |
192f6d4c | 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 | |
615c6dd0 | 13 | **/\r |
192f6d4c | 14 | \r |
192f6d4c | 15 | #include <PeiMain.h>\r |
16 | \r | |
b1f6a7c6 | 17 | /**\r |
192f6d4c | 18 | \r |
19 | Initialize the memory services.\r | |
20 | \r | |
14941e68 | 21 | \r |
22 | @param PrivateData Add parameter description\r | |
b1f6a7c6 | 23 | @param SecCoreData Points to a data structure containing information about the PEI core's operating\r |
5aae0aa7 | 24 | environment, such as the size and location of temporary RAM, the stack location and\r |
25 | the BFV location.\r | |
b1f6a7c6 | 26 | @param OldCoreData Pointer to the PEI Core data.\r |
192f6d4c | 27 | NULL if being run in non-permament memory mode.\r |
28 | \r | |
b1f6a7c6 | 29 | **/\r |
30 | VOID\r | |
31 | InitializeMemoryServices (\r | |
32 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
33 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
34 | IN PEI_CORE_INSTANCE *OldCoreData\r | |
35 | )\r | |
192f6d4c | 36 | {\r |
58dcdada | 37 | \r |
38 | PrivateData->SwitchStackSignal = FALSE;\r | |
192f6d4c | 39 | \r |
40f26b8f | 40 | //\r |
41 | // First entering PeiCore, following code will initialized some field\r | |
42 | // in PeiCore's private data according to hand off data from sec core.\r | |
43 | //\r | |
192f6d4c | 44 | if (OldCoreData == NULL) {\r |
45 | \r | |
46 | PrivateData->PeiMemoryInstalled = FALSE;\r | |
47 | \r | |
58dcdada | 48 | PrivateData->BottomOfCarHeap = SecCoreData->PeiTemporaryRamBase; \r |
49 | PrivateData->TopOfCarHeap = (VOID *)((UINTN)(PrivateData->BottomOfCarHeap) + SecCoreData->PeiTemporaryRamSize);\r | |
50 | PrivateData->SizeOfTemporaryMemory = SecCoreData->TemporaryRamSize;\r | |
51 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
52 | \r | |
192f6d4c | 53 | DEBUG_CODE_BEGIN ();\r |
5aae0aa7 | 54 | PrivateData->SizeOfCacheAsRam = SecCoreData->PeiTemporaryRamSize + SecCoreData->StackSize;\r |
55 | PrivateData->MaxTopOfCarHeap = (VOID *) ((UINTN) PrivateData->BottomOfCarHeap + (UINTN) PrivateData->SizeOfCacheAsRam);\r | |
b0d803fe | 56 | PrivateData->StackBase = (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->StackBase;\r |
57 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
192f6d4c | 58 | DEBUG_CODE_END ();\r |
59 | \r | |
60 | PrivateData->HobList.Raw = PrivateData->BottomOfCarHeap;\r | |
61 | \r | |
62 | PeiCoreBuildHobHandoffInfoTable (\r | |
63 | BOOT_WITH_FULL_CONFIGURATION,\r | |
64 | (EFI_PHYSICAL_ADDRESS) (UINTN) PrivateData->BottomOfCarHeap,\r | |
5aae0aa7 | 65 | (UINTN) SecCoreData->PeiTemporaryRamSize\r |
192f6d4c | 66 | );\r |
192f6d4c | 67 | \r |
68 | //\r | |
69 | // Set PS to point to ServiceTableShadow in Cache\r | |
70 | //\r | |
71 | PrivateData->PS = &(PrivateData->ServiceTableShadow);\r | |
b0d803fe | 72 | }\r |
73 | \r | |
192f6d4c | 74 | return;\r |
75 | }\r | |
76 | \r | |
b1f6a7c6 | 77 | /**\r |
78 | \r | |
14941e68 | 79 | Install the permanent memory is now available.\r |
80 | Creates HOB (PHIT and Stack).\r | |
b1f6a7c6 | 81 | \r |
d73d93c3 | 82 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
83 | @param MemoryBegin Start of memory address.\r | |
84 | @param MemoryLength Length of memory.\r | |
b1f6a7c6 | 85 | \r |
86 | @return EFI_SUCCESS Always success.\r | |
87 | \r | |
88 | **/\r | |
192f6d4c | 89 | EFI_STATUS\r |
90 | EFIAPI\r | |
91 | PeiInstallPeiMemory (\r | |
58dcdada | 92 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
93 | IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r | |
94 | IN UINT64 MemoryLength\r | |
192f6d4c | 95 | )\r |
192f6d4c | 96 | {\r |
97 | PEI_CORE_INSTANCE *PrivateData;\r | |
58dcdada | 98 | \r |
a3a15d21 | 99 | DEBUG ((EFI_D_INFO, "PeiInstallPeiMemory MemoryBegin 0x%LX, MemoryLength 0x%LX\n", MemoryBegin, MemoryLength));\r |
192f6d4c | 100 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r |
101 | \r | |
58dcdada | 102 | PrivateData->PhysicalMemoryBegin = MemoryBegin;\r |
103 | PrivateData->PhysicalMemoryLength = MemoryLength;\r | |
104 | PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r | |
105 | \r | |
106 | PrivateData->SwitchStackSignal = TRUE;\r | |
192f6d4c | 107 | \r |
108 | return EFI_SUCCESS; \r | |
109 | }\r | |
110 | \r | |
b1f6a7c6 | 111 | /**\r |
112 | \r | |
113 | Memory allocation service on permanent memory,\r | |
114 | not usable prior to the memory installation.\r | |
115 | \r | |
116 | \r | |
d73d93c3 | 117 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
118 | @param MemoryType Type of memory to allocate.\r | |
119 | @param Pages Number of pages to allocate.\r | |
120 | @param Memory Pointer of memory allocated.\r | |
b1f6a7c6 | 121 | \r |
122 | @retval EFI_SUCCESS The allocation was successful\r | |
14941e68 | 123 | @retval EFI_INVALID_PARAMETER Only AllocateAnyAddress is supported.\r |
b1f6a7c6 | 124 | @retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available\r |
125 | @retval EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement\r | |
126 | to allocate the number of pages.\r | |
127 | \r | |
128 | **/\r | |
192f6d4c | 129 | EFI_STATUS\r |
130 | EFIAPI\r | |
131 | PeiAllocatePages (\r | |
14941e68 | 132 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
133 | IN EFI_MEMORY_TYPE MemoryType,\r | |
134 | IN UINTN Pages,\r | |
135 | OUT EFI_PHYSICAL_ADDRESS *Memory\r | |
192f6d4c | 136 | )\r |
192f6d4c | 137 | {\r |
138 | PEI_CORE_INSTANCE *PrivateData;\r | |
139 | EFI_PEI_HOB_POINTERS Hob;\r | |
14941e68 | 140 | EFI_PHYSICAL_ADDRESS Offset;\r |
58dcdada | 141 | EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r |
142 | EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r | |
192f6d4c | 143 | \r |
144 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r | |
58dcdada | 145 | Hob.Raw = PrivateData->HobList.Raw;\r |
146 | \r | |
192f6d4c | 147 | //\r |
148 | // Check if Hob already available\r | |
149 | //\r | |
150 | if (!PrivateData->PeiMemoryInstalled) {\r | |
58dcdada | 151 | //\r |
152 | // When PeiInstallMemory is called but CAR has *not* been moved to temporary memory,\r | |
14941e68 | 153 | // the AllocatePage will dependent the field of PEI_CORE_INSTANCE structure.\r |
58dcdada | 154 | //\r |
155 | if (!PrivateData->SwitchStackSignal) {\r | |
156 | return EFI_NOT_AVAILABLE_YET;\r | |
157 | } else {\r | |
158 | FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r | |
159 | FreeMemoryBottom = &(PrivateData->PhysicalMemoryBegin);\r | |
160 | }\r | |
161 | } else {\r | |
162 | FreeMemoryTop = &(Hob.HandoffInformationTable->EfiFreeMemoryTop);\r | |
163 | FreeMemoryBottom = &(Hob.HandoffInformationTable->EfiFreeMemoryBottom);\r | |
192f6d4c | 164 | }\r |
165 | \r | |
192f6d4c | 166 | //\r |
14941e68 | 167 | // Check to see if on 4k boundary\r |
192f6d4c | 168 | //\r |
14941e68 | 169 | Offset = *(FreeMemoryTop) & 0xFFF;\r |
170 | \r | |
171 | //\r | |
172 | // If not aligned, make the allocation aligned.\r | |
173 | //\r | |
174 | if (Offset != 0) {\r | |
175 | *(FreeMemoryTop) -= Offset;\r | |
176 | }\r | |
58dcdada | 177 | \r |
192f6d4c | 178 | //\r |
179 | // Verify that there is sufficient memory to satisfy the allocation\r | |
180 | //\r | |
58dcdada | 181 | if (*(FreeMemoryTop) - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < \r |
182 | *(FreeMemoryBottom)) {\r | |
192f6d4c | 183 | DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%x Pages is available.\n", Pages));\r |
184 | DEBUG ((EFI_D_ERROR, "There is only left 0x%x pages memory resource to be allocated.\n", \\r | |
58dcdada | 185 | EFI_SIZE_TO_PAGES ((UINTN) (*(FreeMemoryTop) - *(FreeMemoryBottom)))));\r |
192f6d4c | 186 | return EFI_OUT_OF_RESOURCES;\r |
187 | } else {\r | |
188 | //\r | |
189 | // Update the PHIT to reflect the memory usage\r | |
190 | //\r | |
58dcdada | 191 | *(FreeMemoryTop) -= Pages * EFI_PAGE_SIZE;\r |
192f6d4c | 192 | \r |
193 | //\r | |
194 | // Update the value for the caller\r | |
195 | //\r | |
58dcdada | 196 | *Memory = *(FreeMemoryTop);\r |
192f6d4c | 197 | \r |
198 | //\r | |
199 | // Create a memory allocation HOB.\r | |
200 | //\r | |
201 | BuildMemoryAllocationHob (\r | |
58dcdada | 202 | *(FreeMemoryTop),\r |
0a7d0741 | 203 | Pages * EFI_PAGE_SIZE,\r |
192f6d4c | 204 | MemoryType\r |
205 | );\r | |
206 | \r | |
207 | return EFI_SUCCESS;\r | |
208 | }\r | |
209 | }\r | |
210 | \r | |
b1f6a7c6 | 211 | /**\r |
212 | \r | |
14941e68 | 213 | Memory allocation service on the CAR.\r |
214 | \r | |
b1f6a7c6 | 215 | \r |
14941e68 | 216 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
217 | @param Size Amount of memory required\r | |
218 | @param Buffer Address of pointer to the buffer\r | |
b1f6a7c6 | 219 | \r |
220 | @retval EFI_SUCCESS The allocation was successful\r | |
221 | @retval EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement\r | |
222 | to allocate the requested size.\r | |
223 | \r | |
224 | **/\r | |
192f6d4c | 225 | EFI_STATUS\r |
226 | EFIAPI\r | |
227 | PeiAllocatePool (\r | |
14941e68 | 228 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
229 | IN UINTN Size,\r | |
230 | OUT VOID **Buffer\r | |
192f6d4c | 231 | )\r |
192f6d4c | 232 | {\r |
233 | EFI_STATUS Status;\r | |
234 | EFI_HOB_MEMORY_POOL *Hob;\r | |
235 | \r | |
14941e68 | 236 | //\r |
237 | // If some "post-memory" PEIM wishes to allocate larger pool,\r | |
238 | // it should use AllocatePages service instead.\r | |
239 | //\r | |
240 | ASSERT (Size < 0x10000 - sizeof (EFI_HOB_MEMORY_POOL));\r | |
241 | Status = PeiServicesCreateHob (\r | |
192f6d4c | 242 | EFI_HOB_TYPE_MEMORY_POOL,\r |
243 | (UINT16)(sizeof (EFI_HOB_MEMORY_POOL) + Size),\r | |
244 | (VOID **)&Hob\r | |
245 | );\r | |
246 | *Buffer = Hob+1; \r | |
247 | \r | |
14941e68 | 248 | \r |
192f6d4c | 249 | return Status;\r |
250 | }\r |