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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | MemoryServices.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | EFI PEI Core memory services\r | |
19 | \r | |
20 | **/\r | |
21 | \r | |
22 | #include <PeiMain.h>\r | |
23 | \r | |
24 | VOID\r | |
25 | InitializeMemoryServices (\r | |
26 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
27 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
28 | IN PEI_CORE_INSTANCE *OldCoreData\r | |
29 | )\r | |
30 | /*++\r | |
31 | \r | |
32 | Routine Description:\r | |
33 | \r | |
34 | Initialize the memory services.\r | |
35 | \r | |
36 | Arguments:\r | |
37 | \r | |
38 | PeiServices - The PEI core services table.\r | |
39 | SecCoreData - Points to a data structure containing information about the PEI core's operating\r | |
40 | environment, such as the size and location of temporary RAM, the stack location and\r | |
41 | the BFV location.\r | |
42 | \r | |
43 | OldCoreData - Pointer to the PEI Core data.\r | |
44 | NULL if being run in non-permament memory mode.\r | |
45 | \r | |
46 | Returns:\r | |
47 | \r | |
48 | None\r | |
49 | \r | |
50 | --*/\r | |
51 | {\r | |
52 | \r | |
53 | PrivateData->SwitchStackSignal = FALSE;\r | |
54 | \r | |
55 | if (OldCoreData == NULL) {\r | |
56 | \r | |
57 | PrivateData->PeiMemoryInstalled = FALSE;\r | |
58 | \r | |
59 | PrivateData->BottomOfCarHeap = SecCoreData->PeiTemporaryRamBase; \r | |
60 | PrivateData->TopOfCarHeap = (VOID *)((UINTN)(PrivateData->BottomOfCarHeap) + SecCoreData->PeiTemporaryRamSize);\r | |
61 | PrivateData->SizeOfTemporaryMemory = SecCoreData->TemporaryRamSize;\r | |
62 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
63 | \r | |
64 | DEBUG_CODE_BEGIN ();\r | |
65 | PrivateData->SizeOfCacheAsRam = SecCoreData->PeiTemporaryRamSize + SecCoreData->StackSize;\r | |
66 | PrivateData->MaxTopOfCarHeap = (VOID *) ((UINTN) PrivateData->BottomOfCarHeap + (UINTN) PrivateData->SizeOfCacheAsRam);\r | |
67 | PrivateData->StackBase = (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->StackBase;\r | |
68 | PrivateData->StackSize = (UINT64) SecCoreData->StackSize;\r | |
69 | DEBUG_CODE_END ();\r | |
70 | \r | |
71 | PrivateData->HobList.Raw = PrivateData->BottomOfCarHeap;\r | |
72 | \r | |
73 | PeiCoreBuildHobHandoffInfoTable (\r | |
74 | BOOT_WITH_FULL_CONFIGURATION,\r | |
75 | (EFI_PHYSICAL_ADDRESS) (UINTN) PrivateData->BottomOfCarHeap,\r | |
76 | (UINTN) SecCoreData->PeiTemporaryRamSize\r | |
77 | );\r | |
78 | \r | |
79 | //\r | |
80 | // Set PS to point to ServiceTableShadow in Cache\r | |
81 | //\r | |
82 | PrivateData->PS = &(PrivateData->ServiceTableShadow);\r | |
83 | }\r | |
84 | \r | |
85 | return;\r | |
86 | }\r | |
87 | \r | |
88 | EFI_STATUS\r | |
89 | EFIAPI\r | |
90 | PeiInstallPeiMemory (\r | |
91 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
92 | IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r | |
93 | IN UINT64 MemoryLength\r | |
94 | )\r | |
95 | /*++\r | |
96 | \r | |
97 | Routine Description:\r | |
98 | \r | |
99 | Install the permanent memory is now available.\r | |
100 | Creates HOB (PHIT and Stack).\r | |
101 | \r | |
102 | Arguments:\r | |
103 | \r | |
104 | PeiServices - The PEI core services table.\r | |
105 | MemoryBegin - Start of memory address.\r | |
106 | MemoryLength - Length of memory.\r | |
107 | \r | |
108 | Returns:\r | |
109 | \r | |
110 | Status - EFI_SUCCESS\r | |
111 | \r | |
112 | --*/\r | |
113 | {\r | |
114 | PEI_CORE_INSTANCE *PrivateData;\r | |
115 | \r | |
116 | DEBUG ((EFI_D_INFO, "PeiInstallPeiMemory MemoryBegin 0x%LX, MemoryLength 0x%LX\n", MemoryBegin, MemoryLength));\r | |
117 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r | |
118 | \r | |
119 | PrivateData->PhysicalMemoryBegin = MemoryBegin;\r | |
120 | PrivateData->PhysicalMemoryLength = MemoryLength;\r | |
121 | PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r | |
122 | \r | |
123 | PrivateData->SwitchStackSignal = TRUE;\r | |
124 | \r | |
125 | return EFI_SUCCESS; \r | |
126 | }\r | |
127 | \r | |
128 | EFI_STATUS\r | |
129 | EFIAPI\r | |
130 | PeiAllocatePages (\r | |
131 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
132 | IN EFI_MEMORY_TYPE MemoryType,\r | |
133 | IN UINTN Pages,\r | |
134 | OUT EFI_PHYSICAL_ADDRESS *Memory\r | |
135 | )\r | |
136 | /*++\r | |
137 | \r | |
138 | Routine Description:\r | |
139 | \r | |
140 | Memory allocation service on permanent memory, \r | |
141 | not usable prior to the memory installation.\r | |
142 | \r | |
143 | Arguments:\r | |
144 | \r | |
145 | PeiServices - The PEI core services table.\r | |
146 | MemoryType - Type of memory to allocate.\r | |
147 | Pages - Number of pages to allocate.\r | |
148 | Memory - Pointer of memory allocated.\r | |
149 | \r | |
150 | Returns:\r | |
151 | \r | |
152 | Status - EFI_SUCCESS The allocation was successful\r | |
153 | EFI_INVALID_PARAMETER Only AllocateAnyAddress is supported.\r | |
154 | EFI_NOT_AVAILABLE_YET Called with permanent memory not available\r | |
155 | EFI_OUT_OF_RESOURCES There is not enough HOB heap to satisfy the requirement\r | |
156 | to allocate the number of pages.\r | |
157 | \r | |
158 | --*/\r | |
159 | {\r | |
160 | PEI_CORE_INSTANCE *PrivateData;\r | |
161 | EFI_PEI_HOB_POINTERS Hob;\r | |
162 | EFI_PHYSICAL_ADDRESS Offset;\r | |
163 | EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r | |
164 | EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r | |
165 | \r | |
166 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r | |
167 | Hob.Raw = PrivateData->HobList.Raw;\r | |
168 | \r | |
169 | //\r | |
170 | // Check if Hob already available\r | |
171 | //\r | |
172 | if (!PrivateData->PeiMemoryInstalled) {\r | |
173 | //\r | |
174 | // When PeiInstallMemory is called but CAR has *not* been moved to temporary memory,\r | |
175 | // the AllocatePage will dependent the field of PEI_CORE_INSTANCE structure.\r | |
176 | //\r | |
177 | if (!PrivateData->SwitchStackSignal) {\r | |
178 | return EFI_NOT_AVAILABLE_YET;\r | |
179 | } else {\r | |
180 | FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r | |
181 | FreeMemoryBottom = &(PrivateData->PhysicalMemoryBegin);\r | |
182 | }\r | |
183 | } else {\r | |
184 | FreeMemoryTop = &(Hob.HandoffInformationTable->EfiFreeMemoryTop);\r | |
185 | FreeMemoryBottom = &(Hob.HandoffInformationTable->EfiFreeMemoryBottom);\r | |
186 | }\r | |
187 | \r | |
188 | \r | |
189 | \r | |
190 | //\r | |
191 | // Check to see if on 4k boundary\r | |
192 | //\r | |
193 | Offset = *(FreeMemoryTop) & 0xFFF;\r | |
194 | \r | |
195 | //\r | |
196 | // If not aligned, make the allocation aligned.\r | |
197 | //\r | |
198 | if (Offset != 0) {\r | |
199 | *(FreeMemoryTop) -= Offset;\r | |
200 | }\r | |
201 | \r | |
202 | //\r | |
203 | // Verify that there is sufficient memory to satisfy the allocation\r | |
204 | //\r | |
205 | if (*(FreeMemoryTop) - ((Pages * EFI_PAGE_SIZE) + sizeof (EFI_HOB_MEMORY_ALLOCATION)) < \r | |
206 | *(FreeMemoryBottom)) {\r | |
207 | DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%x Pages is available.\n", Pages));\r | |
208 | DEBUG ((EFI_D_ERROR, "There is only left 0x%x pages memory resource to be allocated.\n", \\r | |
209 | EFI_SIZE_TO_PAGES ((UINTN) (*(FreeMemoryTop) - *(FreeMemoryBottom)))));\r | |
210 | return EFI_OUT_OF_RESOURCES;\r | |
211 | } else {\r | |
212 | //\r | |
213 | // Update the PHIT to reflect the memory usage\r | |
214 | //\r | |
215 | *(FreeMemoryTop) -= Pages * EFI_PAGE_SIZE;\r | |
216 | \r | |
217 | //\r | |
218 | // Update the value for the caller\r | |
219 | //\r | |
220 | *Memory = *(FreeMemoryTop);\r | |
221 | \r | |
222 | //\r | |
223 | // Create a memory allocation HOB.\r | |
224 | //\r | |
225 | BuildMemoryAllocationHob (\r | |
226 | *(FreeMemoryTop),\r | |
227 | Pages * EFI_PAGE_SIZE,\r | |
228 | MemoryType\r | |
229 | );\r | |
230 | \r | |
231 | return EFI_SUCCESS;\r | |
232 | }\r | |
233 | }\r | |
234 | \r | |
235 | \r | |
236 | EFI_STATUS\r | |
237 | EFIAPI\r | |
238 | PeiAllocatePool (\r | |
239 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
240 | IN UINTN Size,\r | |
241 | OUT VOID **Buffer\r | |
242 | )\r | |
243 | /*++\r | |
244 | \r | |
245 | Routine Description:\r | |
246 | \r | |
247 | Memory allocation service on the CAR. \r | |
248 | \r | |
249 | Arguments:\r | |
250 | \r | |
251 | PeiServices - The PEI core services table.\r | |
252 | \r | |
253 | Size - Amount of memory required\r | |
254 | \r | |
255 | Buffer - Address of pointer to the buffer\r | |
256 | \r | |
257 | Returns:\r | |
258 | \r | |
259 | Status - EFI_SUCCESS The allocation was successful\r | |
260 | EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement\r | |
261 | to allocate the requested size.\r | |
262 | \r | |
263 | --*/\r | |
264 | {\r | |
265 | EFI_STATUS Status;\r | |
266 | EFI_HOB_MEMORY_POOL *Hob;\r | |
267 | \r | |
268 | //\r | |
269 | // If some "post-memory" PEIM wishes to allocate larger pool,\r | |
270 | // it should use AllocatePages service instead.\r | |
271 | //\r | |
272 | ASSERT (Size < 0x10000 - sizeof (EFI_HOB_MEMORY_POOL));\r | |
273 | Status = PeiServicesCreateHob (\r | |
274 | EFI_HOB_TYPE_MEMORY_POOL,\r | |
275 | (UINT16)(sizeof (EFI_HOB_MEMORY_POOL) + Size),\r | |
276 | (VOID **)&Hob\r | |
277 | );\r | |
278 | *Buffer = Hob+1; \r | |
279 | \r | |
280 | \r | |
281 | return Status;\r | |
282 | }\r |