]>
Commit | Line | Data |
---|---|---|
e42e9404 | 1 | /** @file\r |
2 | SMM Memory pool management functions.\r | |
3 | \r | |
84edd20b | 4 | Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r |
e42e9404 | 5 | This program and the accompanying materials are licensed and made available \r |
6 | under the terms and conditions of the BSD License which accompanies this \r | |
7 | 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 "PiSmmCore.h"\r | |
16 | \r | |
e42e9404 | 17 | LIST_ENTRY mSmmPoolLists[MAX_POOL_INDEX];\r |
3c447c27 | 18 | //\r |
19 | // To cache the SMRAM base since when Loading modules At fixed address feature is enabled, \r | |
20 | // all module is assigned an offset relative the SMRAM base in build time.\r | |
21 | //\r | |
22 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_PHYSICAL_ADDRESS gLoadModuleAtFixAddressSmramBase = 0;\r | |
e42e9404 | 23 | \r |
24 | /**\r | |
25 | Called to initialize the memory service.\r | |
26 | \r | |
27 | @param SmramRangeCount Number of SMRAM Regions\r | |
28 | @param SmramRanges Pointer to SMRAM Descriptors\r | |
29 | \r | |
30 | **/\r | |
31 | VOID\r | |
32 | SmmInitializeMemoryServices (\r | |
33 | IN UINTN SmramRangeCount,\r | |
34 | IN EFI_SMRAM_DESCRIPTOR *SmramRanges\r | |
35 | )\r | |
36 | {\r | |
3c447c27 | 37 | UINTN Index;\r |
38 | UINT64 SmmCodeSize;\r | |
39 | UINTN CurrentSmramRangesIndex;\r | |
40 | UINT64 MaxSize;\r | |
e42e9404 | 41 | \r |
42 | //\r | |
43 | // Initialize Pool list\r | |
44 | //\r | |
45 | for (Index = sizeof (mSmmPoolLists) / sizeof (*mSmmPoolLists); Index > 0;) {\r | |
46 | InitializeListHead (&mSmmPoolLists[--Index]);\r | |
47 | }\r | |
3c447c27 | 48 | CurrentSmramRangesIndex = 0;\r |
49 | //\r | |
50 | // If Loadding Module At fixed Address feature is enabled, cache the SMRAM base here\r | |
51 | //\r | |
52 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r | |
53 | //\r | |
54 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r | |
55 | //\r | |
56 | SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r | |
57 | \r | |
58 | //\r | |
59 | // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r | |
60 | //\r | |
61 | for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < SmramRangeCount; Index++) {\r | |
2c0f06f0 | 62 | //\r |
63 | // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r | |
64 | //\r | |
65 | if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r | |
66 | continue;\r | |
67 | }\r | |
68 | \r | |
3c447c27 | 69 | if (SmramRanges[Index].CpuStart >= BASE_1MB) {\r |
70 | if ((SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize) <= BASE_4GB) {\r | |
71 | if (SmramRanges[Index].PhysicalSize >= MaxSize) {\r | |
72 | MaxSize = SmramRanges[Index].PhysicalSize;\r | |
73 | CurrentSmramRangesIndex = Index;\r | |
74 | }\r | |
75 | }\r | |
76 | }\r | |
77 | }\r | |
78 | gLoadModuleAtFixAddressSmramBase = SmramRanges[CurrentSmramRangesIndex].CpuStart;\r | |
79 | \r | |
80 | //\r | |
81 | // cut out a memory range from this SMRAM range with the size SmmCodeSize to hold SMM driver code\r | |
82 | // A notable thing is that SMM core is already loaded into this range.\r | |
83 | //\r | |
84 | SmramRanges[CurrentSmramRangesIndex].CpuStart = SmramRanges[CurrentSmramRangesIndex].CpuStart + SmmCodeSize; \r | |
85 | SmramRanges[CurrentSmramRangesIndex].PhysicalSize = SmramRanges[CurrentSmramRangesIndex].PhysicalSize - SmmCodeSize;\r | |
86 | }\r | |
e42e9404 | 87 | //\r |
88 | // Initialize free SMRAM regions\r | |
89 | //\r | |
90 | for (Index = 0; Index < SmramRangeCount; Index++) {\r | |
91 | SmmAddMemoryRegion (\r | |
92 | SmramRanges[Index].CpuStart,\r | |
93 | SmramRanges[Index].PhysicalSize,\r | |
94 | EfiConventionalMemory,\r | |
95 | SmramRanges[Index].RegionState\r | |
96 | );\r | |
97 | }\r | |
3c447c27 | 98 | \r |
e42e9404 | 99 | }\r |
100 | \r | |
101 | /**\r | |
102 | Internal Function. Allocate a pool by specified PoolIndex.\r | |
103 | \r | |
104 | @param PoolIndex Index which indicate the Pool size.\r | |
105 | @param FreePoolHdr The returned Free pool.\r | |
106 | \r | |
107 | @retval EFI_OUT_OF_RESOURCES Allocation failed.\r | |
108 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
109 | \r | |
110 | **/\r | |
111 | EFI_STATUS\r | |
112 | InternalAllocPoolByIndex (\r | |
113 | IN UINTN PoolIndex,\r | |
114 | OUT FREE_POOL_HEADER **FreePoolHdr\r | |
115 | )\r | |
116 | {\r | |
84edd20b SZ |
117 | EFI_STATUS Status;\r |
118 | FREE_POOL_HEADER *Hdr;\r | |
119 | EFI_PHYSICAL_ADDRESS Address;\r | |
e42e9404 | 120 | \r |
52c0d06b | 121 | ASSERT (PoolIndex <= MAX_POOL_INDEX);\r |
e42e9404 | 122 | Status = EFI_SUCCESS;\r |
123 | if (PoolIndex == MAX_POOL_INDEX) {\r | |
84edd20b SZ |
124 | Status = SmmInternalAllocatePages (AllocateAnyPages, EfiRuntimeServicesData, EFI_SIZE_TO_PAGES (MAX_POOL_SIZE << 1), &Address);\r |
125 | if (EFI_ERROR (Status)) {\r | |
5b422a7b | 126 | return EFI_OUT_OF_RESOURCES;\r |
e42e9404 | 127 | }\r |
84edd20b | 128 | Hdr = (FREE_POOL_HEADER *) (UINTN) Address;\r |
e42e9404 | 129 | } else if (!IsListEmpty (&mSmmPoolLists[PoolIndex])) {\r |
130 | Hdr = BASE_CR (GetFirstNode (&mSmmPoolLists[PoolIndex]), FREE_POOL_HEADER, Link);\r | |
131 | RemoveEntryList (&Hdr->Link);\r | |
132 | } else {\r | |
133 | Status = InternalAllocPoolByIndex (PoolIndex + 1, &Hdr);\r | |
134 | if (!EFI_ERROR (Status)) {\r | |
135 | Hdr->Header.Size >>= 1;\r | |
136 | Hdr->Header.Available = TRUE;\r | |
137 | InsertHeadList (&mSmmPoolLists[PoolIndex], &Hdr->Link);\r | |
138 | Hdr = (FREE_POOL_HEADER*)((UINT8*)Hdr + Hdr->Header.Size);\r | |
139 | }\r | |
140 | }\r | |
141 | \r | |
142 | if (!EFI_ERROR (Status)) {\r | |
143 | Hdr->Header.Size = MIN_POOL_SIZE << PoolIndex;\r | |
144 | Hdr->Header.Available = FALSE;\r | |
145 | }\r | |
146 | \r | |
147 | *FreePoolHdr = Hdr;\r | |
148 | return Status;\r | |
149 | }\r | |
150 | \r | |
151 | /**\r | |
152 | Internal Function. Free a pool by specified PoolIndex.\r | |
153 | \r | |
154 | @param FreePoolHdr The pool to free.\r | |
155 | \r | |
156 | @retval EFI_SUCCESS Pool successfully freed.\r | |
157 | \r | |
158 | **/\r | |
159 | EFI_STATUS\r | |
160 | InternalFreePoolByIndex (\r | |
161 | IN FREE_POOL_HEADER *FreePoolHdr\r | |
162 | )\r | |
163 | {\r | |
164 | UINTN PoolIndex;\r | |
165 | \r | |
166 | ASSERT ((FreePoolHdr->Header.Size & (FreePoolHdr->Header.Size - 1)) == 0);\r | |
167 | ASSERT (((UINTN)FreePoolHdr & (FreePoolHdr->Header.Size - 1)) == 0);\r | |
168 | ASSERT (FreePoolHdr->Header.Size >= MIN_POOL_SIZE);\r | |
169 | \r | |
fbe12b79 | 170 | PoolIndex = (UINTN) (HighBitSet32 ((UINT32)FreePoolHdr->Header.Size) - MIN_POOL_SHIFT);\r |
e42e9404 | 171 | FreePoolHdr->Header.Available = TRUE;\r |
5b422a7b | 172 | ASSERT (PoolIndex < MAX_POOL_INDEX);\r |
e42e9404 | 173 | InsertHeadList (&mSmmPoolLists[PoolIndex], &FreePoolHdr->Link);\r |
174 | return EFI_SUCCESS;\r | |
175 | }\r | |
176 | \r | |
177 | /**\r | |
178 | Allocate pool of a particular type.\r | |
179 | \r | |
180 | @param PoolType Type of pool to allocate.\r | |
181 | @param Size The amount of pool to allocate.\r | |
182 | @param Buffer The address to return a pointer to the allocated\r | |
183 | pool.\r | |
184 | \r | |
185 | @retval EFI_INVALID_PARAMETER PoolType not valid.\r | |
186 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r | |
187 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
188 | \r | |
189 | **/\r | |
190 | EFI_STATUS\r | |
191 | EFIAPI\r | |
84edd20b | 192 | SmmInternalAllocatePool (\r |
e42e9404 | 193 | IN EFI_MEMORY_TYPE PoolType,\r |
194 | IN UINTN Size,\r | |
195 | OUT VOID **Buffer\r | |
196 | )\r | |
197 | {\r | |
198 | POOL_HEADER *PoolHdr;\r | |
199 | FREE_POOL_HEADER *FreePoolHdr;\r | |
200 | EFI_STATUS Status;\r | |
201 | EFI_PHYSICAL_ADDRESS Address;\r | |
202 | UINTN PoolIndex;\r | |
203 | \r | |
204 | if (PoolType != EfiRuntimeServicesCode &&\r | |
205 | PoolType != EfiRuntimeServicesData) {\r | |
206 | return EFI_INVALID_PARAMETER;\r | |
207 | }\r | |
208 | \r | |
e42e9404 | 209 | Size += sizeof (*PoolHdr);\r |
210 | if (Size > MAX_POOL_SIZE) {\r | |
211 | Size = EFI_SIZE_TO_PAGES (Size);\r | |
84edd20b | 212 | Status = SmmInternalAllocatePages (AllocateAnyPages, PoolType, Size, &Address);\r |
e42e9404 | 213 | if (EFI_ERROR (Status)) {\r |
214 | return Status;\r | |
215 | }\r | |
216 | \r | |
217 | PoolHdr = (POOL_HEADER*)(UINTN)Address;\r | |
218 | PoolHdr->Size = EFI_PAGES_TO_SIZE (Size);\r | |
219 | PoolHdr->Available = FALSE;\r | |
220 | *Buffer = PoolHdr + 1;\r | |
221 | return Status;\r | |
222 | }\r | |
223 | \r | |
224 | Size = (Size + MIN_POOL_SIZE - 1) >> MIN_POOL_SHIFT;\r | |
fbe12b79 | 225 | PoolIndex = (UINTN) HighBitSet32 ((UINT32)Size);\r |
e42e9404 | 226 | if ((Size & (Size - 1)) != 0) {\r |
227 | PoolIndex++;\r | |
228 | }\r | |
229 | \r | |
230 | Status = InternalAllocPoolByIndex (PoolIndex, &FreePoolHdr);\r | |
231 | *Buffer = &FreePoolHdr->Header + 1;\r | |
232 | return Status;\r | |
233 | }\r | |
234 | \r | |
84edd20b SZ |
235 | /**\r |
236 | Allocate pool of a particular type.\r | |
237 | \r | |
238 | @param PoolType Type of pool to allocate.\r | |
239 | @param Size The amount of pool to allocate.\r | |
240 | @param Buffer The address to return a pointer to the allocated\r | |
241 | pool.\r | |
242 | \r | |
243 | @retval EFI_INVALID_PARAMETER PoolType not valid.\r | |
244 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r | |
245 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
246 | \r | |
247 | **/\r | |
248 | EFI_STATUS\r | |
249 | EFIAPI\r | |
250 | SmmAllocatePool (\r | |
251 | IN EFI_MEMORY_TYPE PoolType,\r | |
252 | IN UINTN Size,\r | |
253 | OUT VOID **Buffer\r | |
254 | )\r | |
255 | {\r | |
256 | EFI_STATUS Status;\r | |
257 | \r | |
258 | Status = SmmInternalAllocatePool (PoolType, Size, Buffer);\r | |
259 | if (!EFI_ERROR (Status)) {\r | |
260 | SmmCoreUpdateProfile ((EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0), MemoryProfileActionAllocatePool, PoolType, Size, *Buffer);\r | |
261 | }\r | |
262 | return Status;\r | |
263 | }\r | |
264 | \r | |
e42e9404 | 265 | /**\r |
266 | Frees pool.\r | |
267 | \r | |
268 | @param Buffer The allocated pool entry to free.\r | |
269 | \r | |
270 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r | |
271 | @retval EFI_SUCCESS Pool successfully freed.\r | |
272 | \r | |
273 | **/\r | |
274 | EFI_STATUS\r | |
275 | EFIAPI\r | |
84edd20b | 276 | SmmInternalFreePool (\r |
e42e9404 | 277 | IN VOID *Buffer\r |
278 | )\r | |
279 | {\r | |
280 | FREE_POOL_HEADER *FreePoolHdr;\r | |
281 | \r | |
282 | if (Buffer == NULL) {\r | |
283 | return EFI_INVALID_PARAMETER;\r | |
284 | }\r | |
285 | \r | |
286 | FreePoolHdr = (FREE_POOL_HEADER*)((POOL_HEADER*)Buffer - 1);\r | |
287 | ASSERT (!FreePoolHdr->Header.Available);\r | |
288 | \r | |
289 | if (FreePoolHdr->Header.Size > MAX_POOL_SIZE) {\r | |
290 | ASSERT (((UINTN)FreePoolHdr & EFI_PAGE_MASK) == 0);\r | |
291 | ASSERT ((FreePoolHdr->Header.Size & EFI_PAGE_MASK) == 0);\r | |
84edd20b | 292 | return SmmInternalFreePages (\r |
e42e9404 | 293 | (EFI_PHYSICAL_ADDRESS)(UINTN)FreePoolHdr,\r |
294 | EFI_SIZE_TO_PAGES (FreePoolHdr->Header.Size)\r | |
295 | );\r | |
296 | }\r | |
297 | return InternalFreePoolByIndex (FreePoolHdr);\r | |
298 | }\r | |
84edd20b SZ |
299 | \r |
300 | /**\r | |
301 | Frees pool.\r | |
302 | \r | |
303 | @param Buffer The allocated pool entry to free.\r | |
304 | \r | |
305 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r | |
306 | @retval EFI_SUCCESS Pool successfully freed.\r | |
307 | \r | |
308 | **/\r | |
309 | EFI_STATUS\r | |
310 | EFIAPI\r | |
311 | SmmFreePool (\r | |
312 | IN VOID *Buffer\r | |
313 | )\r | |
314 | {\r | |
315 | EFI_STATUS Status;\r | |
316 | \r | |
317 | Status = SmmInternalFreePool (Buffer);\r | |
318 | if (!EFI_ERROR (Status)) {\r | |
319 | SmmCoreUpdateProfile ((EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0), MemoryProfileActionFreePool, 0, 0, Buffer);\r | |
320 | }\r | |
321 | return Status;\r | |
322 | }\r |