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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 | |
d9494916 | 21 | @param PrivateData Points to PeiCore's private instance data.\r |
b1f6a7c6 | 22 | @param SecCoreData Points to a data structure containing information about the PEI core's operating\r |
5aae0aa7 | 23 | environment, such as the size and location of temporary RAM, the stack location and\r |
24 | the BFV location.\r | |
b1f6a7c6 | 25 | @param OldCoreData Pointer to the PEI Core data.\r |
192f6d4c | 26 | NULL if being run in non-permament memory mode.\r |
27 | \r | |
b1f6a7c6 | 28 | **/\r |
29 | VOID\r | |
30 | InitializeMemoryServices (\r | |
31 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
32 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
33 | IN PEI_CORE_INSTANCE *OldCoreData\r | |
34 | )\r | |
192f6d4c | 35 | {\r |
58dcdada | 36 | \r |
37 | PrivateData->SwitchStackSignal = FALSE;\r | |
192f6d4c | 38 | \r |
40f26b8f | 39 | //\r |
40 | // First entering PeiCore, following code will initialized some field\r | |
41 | // in PeiCore's private data according to hand off data from sec core.\r | |
42 | //\r | |
192f6d4c | 43 | if (OldCoreData == NULL) {\r |
44 | \r | |
45 | PrivateData->PeiMemoryInstalled = FALSE;\r | |
46 | \r | |
58dcdada | 47 | PrivateData->BottomOfCarHeap = SecCoreData->PeiTemporaryRamBase; \r |
48 | PrivateData->TopOfCarHeap = (VOID *)((UINTN)(PrivateData->BottomOfCarHeap) + SecCoreData->PeiTemporaryRamSize);\r | |
49 | PrivateData->SizeOfTemporaryMemory = SecCoreData->TemporaryRamSize;\r | |
50 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
51 | \r | |
192f6d4c | 52 | DEBUG_CODE_BEGIN ();\r |
5aae0aa7 | 53 | PrivateData->SizeOfCacheAsRam = SecCoreData->PeiTemporaryRamSize + SecCoreData->StackSize;\r |
54 | PrivateData->MaxTopOfCarHeap = (VOID *) ((UINTN) PrivateData->BottomOfCarHeap + (UINTN) PrivateData->SizeOfCacheAsRam);\r | |
b0d803fe | 55 | PrivateData->StackBase = (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->StackBase;\r |
56 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
192f6d4c | 57 | DEBUG_CODE_END ();\r |
58 | \r | |
59 | PrivateData->HobList.Raw = PrivateData->BottomOfCarHeap;\r | |
60 | \r | |
61 | PeiCoreBuildHobHandoffInfoTable (\r | |
62 | BOOT_WITH_FULL_CONFIGURATION,\r | |
63 | (EFI_PHYSICAL_ADDRESS) (UINTN) PrivateData->BottomOfCarHeap,\r | |
5aae0aa7 | 64 | (UINTN) SecCoreData->PeiTemporaryRamSize\r |
192f6d4c | 65 | );\r |
192f6d4c | 66 | \r |
67 | //\r | |
68 | // Set PS to point to ServiceTableShadow in Cache\r | |
69 | //\r | |
70 | PrivateData->PS = &(PrivateData->ServiceTableShadow);\r | |
b0d803fe | 71 | }\r |
72 | \r | |
192f6d4c | 73 | return;\r |
74 | }\r | |
75 | \r | |
b1f6a7c6 | 76 | /**\r |
77 | \r | |
d9494916 | 78 | This function registers the found memory configuration with the PEI Foundation.\r |
b1f6a7c6 | 79 | \r |
d9494916 | 80 | The usage model is that the PEIM that discovers the permanent memory shall invoke this service.\r |
81 | This routine will hold discoveried memory information into PeiCore's private data,\r | |
82 | and set SwitchStackSignal flag. After PEIM who discovery memory is dispatched,\r | |
83 | PeiDispatcher will migrate temporary memory to permenement memory.\r | |
84 | \r | |
d73d93c3 | 85 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
86 | @param MemoryBegin Start of memory address.\r | |
87 | @param MemoryLength Length of memory.\r | |
b1f6a7c6 | 88 | \r |
89 | @return EFI_SUCCESS Always success.\r | |
90 | \r | |
91 | **/\r | |
192f6d4c | 92 | EFI_STATUS\r |
93 | EFIAPI\r | |
94 | PeiInstallPeiMemory (\r | |
58dcdada | 95 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
96 | IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r | |
97 | IN UINT64 MemoryLength\r | |
192f6d4c | 98 | )\r |
192f6d4c | 99 | {\r |
100 | PEI_CORE_INSTANCE *PrivateData;\r | |
58dcdada | 101 | \r |
a3a15d21 | 102 | DEBUG ((EFI_D_INFO, "PeiInstallPeiMemory MemoryBegin 0x%LX, MemoryLength 0x%LX\n", MemoryBegin, MemoryLength));\r |
192f6d4c | 103 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r |
104 | \r | |
58dcdada | 105 | PrivateData->PhysicalMemoryBegin = MemoryBegin;\r |
106 | PrivateData->PhysicalMemoryLength = MemoryLength;\r | |
107 | PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r | |
108 | \r | |
109 | PrivateData->SwitchStackSignal = TRUE;\r | |
192f6d4c | 110 | \r |
111 | return EFI_SUCCESS; \r | |
112 | }\r | |
113 | \r | |
b1f6a7c6 | 114 | /**\r |
115 | \r | |
116 | Memory allocation service on permanent memory,\r | |
117 | not usable prior to the memory installation.\r | |
118 | \r | |
119 | \r | |
d73d93c3 | 120 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
121 | @param MemoryType Type of memory to allocate.\r | |
122 | @param Pages Number of pages to allocate.\r | |
123 | @param Memory Pointer of memory allocated.\r | |
b1f6a7c6 | 124 | \r |
125 | @retval EFI_SUCCESS The allocation was successful\r | |
b1f6a7c6 | 126 | @retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available\r |
127 | @retval EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement\r | |
128 | to allocate the number of pages.\r | |
129 | \r | |
130 | **/\r | |
192f6d4c | 131 | EFI_STATUS\r |
132 | EFIAPI\r | |
133 | PeiAllocatePages (\r | |
d9494916 | 134 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
135 | IN EFI_MEMORY_TYPE MemoryType,\r | |
136 | IN UINTN Pages,\r | |
137 | OUT EFI_PHYSICAL_ADDRESS *Memory\r | |
192f6d4c | 138 | )\r |
192f6d4c | 139 | {\r |
140 | PEI_CORE_INSTANCE *PrivateData;\r | |
141 | EFI_PEI_HOB_POINTERS Hob;\r | |
58dcdada | 142 | EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r |
143 | EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r | |
192f6d4c | 144 | \r |
145 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r | |
58dcdada | 146 | Hob.Raw = PrivateData->HobList.Raw;\r |
147 | \r | |
192f6d4c | 148 | //\r |
149 | // Check if Hob already available\r | |
150 | //\r | |
151 | if (!PrivateData->PeiMemoryInstalled) {\r | |
58dcdada | 152 | //\r |
153 | // When PeiInstallMemory is called but CAR has *not* been moved to temporary memory,\r | |
d9494916 | 154 | // the AllocatePage will dependent on the field of PEI_CORE_INSTANCE structure.\r |
58dcdada | 155 | //\r |
156 | if (!PrivateData->SwitchStackSignal) {\r | |
157 | return EFI_NOT_AVAILABLE_YET;\r | |
158 | } else {\r | |
159 | FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r | |
160 | FreeMemoryBottom = &(PrivateData->PhysicalMemoryBegin);\r | |
161 | }\r | |
162 | } else {\r | |
163 | FreeMemoryTop = &(Hob.HandoffInformationTable->EfiFreeMemoryTop);\r | |
164 | FreeMemoryBottom = &(Hob.HandoffInformationTable->EfiFreeMemoryBottom);\r | |
192f6d4c | 165 | }\r |
166 | \r | |
192f6d4c | 167 | //\r |
d9494916 | 168 | // Check to see if on 4k boundary, If not aligned, make the allocation aligned.\r |
192f6d4c | 169 | //\r |
d9494916 | 170 | *(FreeMemoryTop) -= *(FreeMemoryTop) & 0xFFF;\r |
58dcdada | 171 | \r |
192f6d4c | 172 | //\r |
173 | // Verify that there is sufficient memory to satisfy the allocation\r | |
174 | //\r | |
58dcdada | 175 | if (*(FreeMemoryTop) - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < \r |
176 | *(FreeMemoryBottom)) {\r | |
192f6d4c | 177 | DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%x Pages is available.\n", Pages));\r |
178 | DEBUG ((EFI_D_ERROR, "There is only left 0x%x pages memory resource to be allocated.\n", \\r | |
58dcdada | 179 | EFI_SIZE_TO_PAGES ((UINTN) (*(FreeMemoryTop) - *(FreeMemoryBottom)))));\r |
192f6d4c | 180 | return EFI_OUT_OF_RESOURCES;\r |
181 | } else {\r | |
182 | //\r | |
183 | // Update the PHIT to reflect the memory usage\r | |
184 | //\r | |
58dcdada | 185 | *(FreeMemoryTop) -= Pages * EFI_PAGE_SIZE;\r |
192f6d4c | 186 | \r |
187 | //\r | |
188 | // Update the value for the caller\r | |
189 | //\r | |
58dcdada | 190 | *Memory = *(FreeMemoryTop);\r |
192f6d4c | 191 | \r |
192 | //\r | |
193 | // Create a memory allocation HOB.\r | |
194 | //\r | |
195 | BuildMemoryAllocationHob (\r | |
58dcdada | 196 | *(FreeMemoryTop),\r |
0a7d0741 | 197 | Pages * EFI_PAGE_SIZE,\r |
192f6d4c | 198 | MemoryType\r |
199 | );\r | |
200 | \r | |
201 | return EFI_SUCCESS;\r | |
202 | }\r | |
203 | }\r | |
204 | \r | |
b1f6a7c6 | 205 | /**\r |
206 | \r | |
d9494916 | 207 | Pool allocation service. Before permenent memory is discoveried, the pool will \r |
208 | be allocated the heap in the CAR. Genenrally, the size of heap in temporary \r | |
209 | memory does not exceed to 64K, so the biggest pool size could be allocated is \r | |
210 | 64K.\r | |
b1f6a7c6 | 211 | \r |
d9494916 | 212 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
213 | @param Size Amount of memory required\r | |
214 | @param Buffer Address of pointer to the buffer\r | |
b1f6a7c6 | 215 | \r |
216 | @retval EFI_SUCCESS The allocation was successful\r | |
217 | @retval EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement\r | |
218 | to allocate the requested size.\r | |
219 | \r | |
220 | **/\r | |
192f6d4c | 221 | EFI_STATUS\r |
222 | EFIAPI\r | |
223 | PeiAllocatePool (\r | |
d9494916 | 224 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
225 | IN UINTN Size,\r | |
226 | OUT VOID **Buffer\r | |
192f6d4c | 227 | )\r |
192f6d4c | 228 | {\r |
229 | EFI_STATUS Status;\r | |
230 | EFI_HOB_MEMORY_POOL *Hob;\r | |
231 | \r | |
d9494916 | 232 | //\r |
233 | // If some "post-memory" PEIM wishes to allocate larger pool,\r | |
234 | // it should use AllocatePages service instead.\r | |
235 | //\r | |
236 | \r | |
237 | //\r | |
238 | // Generally, the size of heap in temporary memory does not exceed to 64K,\r | |
239 | // so the maxmium size of pool is 0x10000 - sizeof (EFI_HOB_MEMORY_POOL)\r | |
240 | //\r | |
241 | ASSERT (Size < 0x10000 - sizeof (EFI_HOB_MEMORY_POOL));\r | |
242 | Status = PeiServicesCreateHob (\r | |
192f6d4c | 243 | EFI_HOB_TYPE_MEMORY_POOL,\r |
244 | (UINT16)(sizeof (EFI_HOB_MEMORY_POOL) + Size),\r | |
245 | (VOID **)&Hob\r | |
246 | );\r | |
247 | *Buffer = Hob+1; \r | |
248 | \r | |
192f6d4c | 249 | return Status;\r |
250 | }\r |