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615c6dd0 | 1 | /** @file\r |
b1f6a7c6 | 2 | EFI PEI Core memory services\r |
3 | \r | |
2e76dc7e | 4 | Copyright (c) 2006 - 2010, Intel Corporation \r |
192f6d4c | 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 |
0d516397 | 15 | #include "PeiMain.h"\r |
192f6d4c | 16 | \r |
b1f6a7c6 | 17 | /**\r |
192f6d4c | 18 | \r |
19 | Initialize the memory services.\r | |
20 | \r | |
82b8c8df | 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 |
63b62331 | 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 | |
63b62331 | 46 | PrivateData->HobList.Raw = SecCoreData->PeiTemporaryRamBase;\r |
192f6d4c | 47 | \r |
48 | PeiCoreBuildHobHandoffInfoTable (\r | |
49 | BOOT_WITH_FULL_CONFIGURATION,\r | |
63b62331 | 50 | (EFI_PHYSICAL_ADDRESS) (UINTN) SecCoreData->PeiTemporaryRamBase,\r |
5aae0aa7 | 51 | (UINTN) SecCoreData->PeiTemporaryRamSize\r |
192f6d4c | 52 | );\r |
192f6d4c | 53 | \r |
54 | //\r | |
4140a663 | 55 | // Set Ps to point to ServiceTableShadow in Cache\r |
192f6d4c | 56 | //\r |
4140a663 | 57 | PrivateData->Ps = &(PrivateData->ServiceTableShadow);\r |
b0d803fe | 58 | }\r |
59 | \r | |
192f6d4c | 60 | return;\r |
61 | }\r | |
62 | \r | |
b1f6a7c6 | 63 | /**\r |
64 | \r | |
82b8c8df | 65 | This function registers the found memory configuration with the PEI Foundation.\r |
b1f6a7c6 | 66 | \r |
82b8c8df | 67 | The usage model is that the PEIM that discovers the permanent memory shall invoke this service.\r |
68 | This routine will hold discoveried memory information into PeiCore's private data,\r | |
69 | and set SwitchStackSignal flag. After PEIM who discovery memory is dispatched,\r | |
70 | PeiDispatcher will migrate temporary memory to permenement memory.\r | |
71 | \r | |
d73d93c3 | 72 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
73 | @param MemoryBegin Start of memory address.\r | |
74 | @param MemoryLength Length of memory.\r | |
b1f6a7c6 | 75 | \r |
76 | @return EFI_SUCCESS Always success.\r | |
77 | \r | |
78 | **/\r | |
192f6d4c | 79 | EFI_STATUS\r |
80 | EFIAPI\r | |
81 | PeiInstallPeiMemory (\r | |
58dcdada | 82 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
83 | IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r | |
84 | IN UINT64 MemoryLength\r | |
192f6d4c | 85 | )\r |
192f6d4c | 86 | {\r |
87 | PEI_CORE_INSTANCE *PrivateData;\r | |
58dcdada | 88 | \r |
a3a15d21 | 89 | DEBUG ((EFI_D_INFO, "PeiInstallPeiMemory MemoryBegin 0x%LX, MemoryLength 0x%LX\n", MemoryBegin, MemoryLength));\r |
192f6d4c | 90 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r |
91 | \r | |
3152f167 | 92 | //\r |
93 | // PEI_SERVICE.InstallPeiMemory should only be called one time during whole PEI phase.\r | |
94 | // If it is invoked more than one time, ASSERT information is given for developer debugging in debug tip and\r | |
95 | // simply return EFI_SUCESS in release tip to ignore it.\r | |
96 | // \r | |
97 | if (PrivateData->PeiMemoryInstalled) {\r | |
98 | DEBUG ((EFI_D_ERROR, "ERROR: PeiInstallPeiMemory is called more than once!\n"));\r | |
99 | ASSERT (PrivateData->PeiMemoryInstalled);\r | |
100 | return EFI_SUCCESS;\r | |
101 | }\r | |
102 | \r | |
58dcdada | 103 | PrivateData->PhysicalMemoryBegin = MemoryBegin;\r |
104 | PrivateData->PhysicalMemoryLength = MemoryLength;\r | |
105 | PrivateData->FreePhysicalMemoryTop = MemoryBegin + MemoryLength;\r | |
106 | \r | |
107 | PrivateData->SwitchStackSignal = TRUE;\r | |
192f6d4c | 108 | \r |
109 | return EFI_SUCCESS; \r | |
110 | }\r | |
111 | \r | |
b1f6a7c6 | 112 | /**\r |
113 | \r | |
114 | Memory allocation service on permanent memory,\r | |
115 | not usable prior to the memory installation.\r | |
116 | \r | |
117 | \r | |
d73d93c3 | 118 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
119 | @param MemoryType Type of memory to allocate.\r | |
120 | @param Pages Number of pages to allocate.\r | |
121 | @param Memory Pointer of memory allocated.\r | |
b1f6a7c6 | 122 | \r |
123 | @retval EFI_SUCCESS The allocation was successful\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 | |
82b8c8df | 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 | |
58dcdada | 140 | EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r |
141 | EFI_PHYSICAL_ADDRESS *FreeMemoryBottom;\r | |
62031991 | 142 | UINTN RemainingPages;\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 |
3d4d0c34 | 152 | // When PeiInstallMemory is called but temporary memory has *not* been moved to temporary memory,\r |
5f300691 | 153 | // the AllocatePage will depend on 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 |
82b8c8df | 167 | // Check to see if on 4k boundary, If not aligned, make the allocation aligned.\r |
192f6d4c | 168 | //\r |
82b8c8df | 169 | *(FreeMemoryTop) -= *(FreeMemoryTop) & 0xFFF;\r |
58dcdada | 170 | \r |
192f6d4c | 171 | //\r |
172 | // Verify that there is sufficient memory to satisfy the allocation\r | |
173 | //\r | |
62031991 | 174 | RemainingPages = EFI_SIZE_TO_PAGES ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom));\r |
98a601b1 | 175 | //\r |
176 | // For page allocation, the overhead sizeof (EFI_HOB_MEMORY_ALLOCATION) needs one extra page.\r | |
177 | // So the number of remaining pages needs to be greater than that of the request pages.\r | |
178 | //\r | |
179 | if (RemainingPages <= Pages) {\r | |
62031991 | 180 | DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%lx Pages is available.\n", (UINT64) Pages));\r |
181 | DEBUG ((EFI_D_ERROR, "There is only left 0x%lx pages memory resource to be allocated.\n", (UINT64) RemainingPages));\r | |
192f6d4c | 182 | return EFI_OUT_OF_RESOURCES;\r |
183 | } else {\r | |
184 | //\r | |
185 | // Update the PHIT to reflect the memory usage\r | |
186 | //\r | |
58dcdada | 187 | *(FreeMemoryTop) -= Pages * EFI_PAGE_SIZE;\r |
192f6d4c | 188 | \r |
189 | //\r | |
190 | // Update the value for the caller\r | |
191 | //\r | |
58dcdada | 192 | *Memory = *(FreeMemoryTop);\r |
192f6d4c | 193 | \r |
194 | //\r | |
195 | // Create a memory allocation HOB.\r | |
196 | //\r | |
197 | BuildMemoryAllocationHob (\r | |
58dcdada | 198 | *(FreeMemoryTop),\r |
0a7d0741 | 199 | Pages * EFI_PAGE_SIZE,\r |
192f6d4c | 200 | MemoryType\r |
201 | );\r | |
202 | \r | |
203 | return EFI_SUCCESS;\r | |
204 | }\r | |
205 | }\r | |
206 | \r | |
b1f6a7c6 | 207 | /**\r |
208 | \r | |
82b8c8df | 209 | Pool allocation service. Before permenent memory is discoveried, the pool will \r |
3d4d0c34 | 210 | be allocated the heap in the temporary memory. Genenrally, the size of heap in temporary \r |
82b8c8df | 211 | memory does not exceed to 64K, so the biggest pool size could be allocated is \r |
212 | 64K.\r | |
b1f6a7c6 | 213 | \r |
82b8c8df | 214 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
215 | @param Size Amount of memory required\r | |
216 | @param Buffer Address of pointer to the buffer\r | |
b1f6a7c6 | 217 | \r |
218 | @retval EFI_SUCCESS The allocation was successful\r | |
219 | @retval EFI_OUT_OF_RESOURCES There is not enough heap to satisfy the requirement\r | |
220 | to allocate the requested size.\r | |
221 | \r | |
222 | **/\r | |
192f6d4c | 223 | EFI_STATUS\r |
224 | EFIAPI\r | |
225 | PeiAllocatePool (\r | |
82b8c8df | 226 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
227 | IN UINTN Size,\r | |
228 | OUT VOID **Buffer\r | |
192f6d4c | 229 | )\r |
192f6d4c | 230 | {\r |
231 | EFI_STATUS Status;\r | |
232 | EFI_HOB_MEMORY_POOL *Hob;\r | |
233 | \r | |
82b8c8df | 234 | //\r |
235 | // If some "post-memory" PEIM wishes to allocate larger pool,\r | |
236 | // it should use AllocatePages service instead.\r | |
237 | //\r | |
238 | \r | |
239 | //\r | |
240 | // Generally, the size of heap in temporary memory does not exceed to 64K,\r | |
241 | // so the maxmium size of pool is 0x10000 - sizeof (EFI_HOB_MEMORY_POOL)\r | |
242 | //\r | |
2e76dc7e | 243 | if (Size >= (0x10000 - sizeof (EFI_HOB_MEMORY_POOL))) {\r |
244 | return EFI_OUT_OF_RESOURCES;\r | |
245 | }\r | |
246 | \r | |
82b8c8df | 247 | Status = PeiServicesCreateHob (\r |
192f6d4c | 248 | EFI_HOB_TYPE_MEMORY_POOL,\r |
249 | (UINT16)(sizeof (EFI_HOB_MEMORY_POOL) + Size),\r | |
250 | (VOID **)&Hob\r | |
251 | );\r | |
252 | *Buffer = Hob+1; \r | |
253 | \r | |
192f6d4c | 254 | return Status;\r |
255 | }\r |