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1/** @file\r
2 Capsule Runtime Drivers produces two UEFI capsule runtime services.\r
3 (UpdateCapsule, QueryCapsuleCapabilities)\r
4 It installs the Capsule Architectural Protocol (EDKII definition) to signify \r
5 the capsule runtime services are ready.\r
6\r
7Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
8All rights reserved. This program and the accompanying materials\r
9are licensed and made available under the terms and conditions of the BSD License\r
10which accompanies this distribution. The full text of the license may be found at\r
11http://opensource.org/licenses/bsd-license.php\r
12\r
13THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
14WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
15\r
16**/\r
17\r
18#include <Uefi.h>\r
19\r
20#include <Protocol/Capsule.h>\r
21#include <Guid/CapsuleVendor.h>\r
22\r
23#include <Library/DebugLib.h>\r
24#include <Library/PcdLib.h>\r
25#include <Library/CapsuleLib.h>\r
26#include <Library/UefiDriverEntryPoint.h>\r
27#include <Library/UefiBootServicesTableLib.h>\r
28#include <Library/UefiRuntimeServicesTableLib.h>\r
29#include <Library/UefiRuntimeLib.h>\r
30\r
31/**\r
32 Passes capsules to the firmware with both virtual and physical mapping. Depending on the intended\r
33 consumption, the firmware may process the capsule immediately. If the payload should persist\r
34 across a system reset, the reset value returned from EFI_QueryCapsuleCapabilities must\r
35 be passed into ResetSystem() and will cause the capsule to be processed by the firmware as\r
36 part of the reset process.\r
37\r
38 @param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules\r
39 being passed into update capsule.\r
40 @param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in\r
41 CaspuleHeaderArray.\r
42 @param ScatterGatherList Physical pointer to a set of\r
43 EFI_CAPSULE_BLOCK_DESCRIPTOR that describes the\r
44 location in physical memory of a set of capsules.\r
45\r
46 @retval EFI_SUCCESS Valid capsule was passed. If\r
47 CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the\r
48 capsule has been successfully processed by the firmware.\r
49 @retval EFI_DEVICE_ERROR The capsule update was started, but failed due to a device error.\r
50 @retval EFI_INVALID_PARAMETER CapsuleCount is Zero, or CapsuleImage is not valid.\r
51 For across reset capsule image, ScatterGatherList is NULL.\r
52 @retval EFI_UNSUPPORTED CapsuleImage is not recognized by the firmware.\r
53\r
54**/\r
55EFI_STATUS\r
56EFIAPI\r
57UpdateCapsule (\r
58 IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,\r
59 IN UINTN CapsuleCount,\r
60 IN EFI_PHYSICAL_ADDRESS ScatterGatherList OPTIONAL\r
61 )\r
62{\r
63 UINTN ArrayNumber;\r
64 EFI_STATUS Status;\r
65 EFI_CAPSULE_HEADER *CapsuleHeader;\r
66 \r
67 //\r
68 // Capsule Count can't be less than one.\r
69 //\r
70 if (CapsuleCount < 1) {\r
71 return EFI_INVALID_PARAMETER;\r
72 }\r
73\r
74 CapsuleHeader = NULL;\r
75\r
76 for (ArrayNumber = 0; ArrayNumber < CapsuleCount; ArrayNumber++) {\r
77 //\r
78 // A capsule which has the CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE flag must have\r
79 // CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.\r
80 //\r
81 CapsuleHeader = CapsuleHeaderArray[ArrayNumber];\r
82 if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE)) == CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) {\r
83 return EFI_INVALID_PARAMETER;\r
84 }\r
85 //\r
86 // Check Capsule image without populate flag by firmware support capsule function \r
87 //\r
88 if (((CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) == 0) && \r
89 (SupportCapsuleImage (CapsuleHeader) != EFI_SUCCESS)) {\r
90 return EFI_UNSUPPORTED;\r
91 }\r
92 }\r
93\r
94 //\r
95 // Assume that capsules have the same flags on reseting or not.\r
96 //\r
97 CapsuleHeader = CapsuleHeaderArray[0];\r
98 \r
99 //\r
100 // Process across reset capsule image.\r
101 //\r
102 if ((CapsuleHeader->Flags & CAPSULE_FLAGS_PERSIST_ACROSS_RESET) != 0) {\r
103 //\r
104 // Check if the platform supports update capsule across a system reset\r
105 //\r
106 if (!FeaturePcdGet(PcdSupportUpdateCapsuleReset)) {\r
107 return EFI_UNSUPPORTED;\r
108 }\r
109 //\r
110 // ScatterGatherList is only referenced if the capsules are defined to persist across\r
111 // system reset. \r
112 //\r
113 if (ScatterGatherList == (EFI_PHYSICAL_ADDRESS) (UINTN) NULL) {\r
114 return EFI_INVALID_PARAMETER;\r
115 } else {\r
116 //\r
117 // ScatterGatherList is only referenced if the capsules are defined to persist across\r
118 // system reset. Set its value into NV storage to let pre-boot driver to pick it up \r
119 // after coming through a system reset.\r
120 //\r
121 Status = gRT->SetVariable (\r
122 EFI_CAPSULE_VARIABLE_NAME,\r
123 &gEfiCapsuleVendorGuid,\r
124 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
125 sizeof (UINTN),\r
126 (VOID *) &ScatterGatherList\r
127 );\r
128 if (Status != EFI_SUCCESS) {\r
129 return Status;\r
130 }\r
131 //\r
132 // Successfully set the capsule image address into EFI variable.\r
133 //\r
134 return EFI_SUCCESS;\r
135 }\r
136 }\r
137\r
138 //\r
139 // Process the non-reset capsule image.\r
140 //\r
141 if (EfiAtRuntime ()) {\r
142 //\r
143 // Runtime mode doesn't support the non-reset capsule image.\r
144 //\r
145 return EFI_UNSUPPORTED;\r
146 }\r
147\r
148 //\r
149 // Here should be in the boot-time for non-reset capsule image\r
150 // Platform specific update for the non-reset capsule image.\r
151 //\r
152 for (ArrayNumber = 0; ArrayNumber < CapsuleCount; ArrayNumber++) {\r
153 Status = ProcessCapsuleImage (CapsuleHeaderArray[ArrayNumber]);\r
154 if (EFI_ERROR (Status)) {\r
155 return Status;\r
156 }\r
157 }\r
158\r
159 return EFI_SUCCESS;\r
160}\r
161\r
162/**\r
163 Returns if the capsule can be supported via UpdateCapsule().\r
164\r
165 @param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules\r
166 being passed into update capsule.\r
167 @param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in\r
168 CaspuleHeaderArray.\r
169 @param MaxiumCapsuleSize On output the maximum size that UpdateCapsule() can\r
170 support as an argument to UpdateCapsule() via\r
171 CapsuleHeaderArray and ScatterGatherList.\r
172 @param ResetType Returns the type of reset required for the capsule update.\r
173\r
174 @retval EFI_SUCCESS Valid answer returned.\r
175 @retval EFI_UNSUPPORTED The capsule image is not supported on this platform, and\r
176 MaximumCapsuleSize and ResetType are undefined.\r
177 @retval EFI_INVALID_PARAMETER MaximumCapsuleSize is NULL, or ResetTyep is NULL,\r
178 Or CapsuleCount is Zero, or CapsuleImage is not valid.\r
179\r
180**/\r
181EFI_STATUS\r
182EFIAPI\r
183QueryCapsuleCapabilities (\r
184 IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,\r
185 IN UINTN CapsuleCount,\r
186 OUT UINT64 *MaxiumCapsuleSize,\r
187 OUT EFI_RESET_TYPE *ResetType\r
188 )\r
189{\r
190 UINTN ArrayNumber;\r
191 EFI_CAPSULE_HEADER *CapsuleHeader;\r
192\r
193 //\r
194 // Capsule Count can't be less than one.\r
195 //\r
196 if (CapsuleCount < 1) {\r
197 return EFI_INVALID_PARAMETER;\r
198 }\r
199 \r
200 //\r
201 // Check whether input paramter is valid\r
202 //\r
203 if ((MaxiumCapsuleSize == NULL) ||(ResetType == NULL)) {\r
204 return EFI_INVALID_PARAMETER;\r
205 }\r
206\r
207 CapsuleHeader = NULL;\r
208\r
209 for (ArrayNumber = 0; ArrayNumber < CapsuleCount; ArrayNumber++) {\r
210 CapsuleHeader = CapsuleHeaderArray[ArrayNumber];\r
211 //\r
212 // A capsule which has the CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE flag must have\r
213 // CAPSULE_FLAGS_PERSIST_ACROSS_RESET set in its header as well.\r
214 //\r
215 if ((CapsuleHeader->Flags & (CAPSULE_FLAGS_PERSIST_ACROSS_RESET | CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE)) == CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) {\r
216 return EFI_INVALID_PARAMETER;\r
217 }\r
218 //\r
219 // Check Capsule image without populate flag is supported by firmware\r
220 //\r
221 if (((CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) == 0) && \r
222 (SupportCapsuleImage (CapsuleHeader) != EFI_SUCCESS)) {\r
223 return EFI_UNSUPPORTED;\r
224 }\r
225 }\r
226\r
227 //\r
228 // Assume that capsules have the same flags on reseting or not.\r
229 //\r
230 CapsuleHeader = CapsuleHeaderArray[0];\r
231 if ((CapsuleHeader->Flags & CAPSULE_FLAGS_PERSIST_ACROSS_RESET) != 0) {\r
232 //\r
233 //Check if the platform supports update capsule across a system reset\r
234 //\r
235 if (!FeaturePcdGet(PcdSupportUpdateCapsuleReset)) {\r
236 return EFI_UNSUPPORTED;\r
237 }\r
238 *ResetType = EfiResetWarm; \r
239 } else {\r
240 //\r
241 // For non-reset capsule image.\r
242 //\r
243 *ResetType = EfiResetCold;\r
244 }\r
245 \r
246 //\r
247 // The support max capsule image size\r
248 //\r
249 if ((CapsuleHeader->Flags & CAPSULE_FLAGS_POPULATE_SYSTEM_TABLE) != 0) {\r
250 *MaxiumCapsuleSize = FixedPcdGet32(PcdMaxSizePopulateCapsule);\r
251 } else {\r
252 *MaxiumCapsuleSize = FixedPcdGet32(PcdMaxSizeNonPopulateCapsule);\r
253 }\r
254\r
255 return EFI_SUCCESS;\r
256}\r
257\r
258\r
259/**\r
260\r
261 This code installs UEFI capsule runtime service.\r
262\r
263 @param ImageHandle The firmware allocated handle for the EFI image. \r
264 @param SystemTable A pointer to the EFI System Table.\r
265\r
266 @retval EFI_SUCCESS UEFI Capsule Runtime Services are installed successfully. \r
267\r
268**/\r
269EFI_STATUS\r
270EFIAPI\r
271CapsuleServiceInitialize (\r
272 IN EFI_HANDLE ImageHandle,\r
273 IN EFI_SYSTEM_TABLE *SystemTable\r
274 )\r
275{\r
276 EFI_STATUS Status;\r
277 EFI_HANDLE NewHandle;\r
278 \r
279 //\r
280 // Install capsule runtime services into UEFI runtime service tables.\r
281 //\r
282 gRT->UpdateCapsule = UpdateCapsule;\r
283 gRT->QueryCapsuleCapabilities = QueryCapsuleCapabilities;\r
284\r
285 //\r
286 // Install the Capsule Architectural Protocol on a new handle\r
287 // to signify the capsule runtime services are ready.\r
288 //\r
289 NewHandle = NULL;\r
290\r
291 Status = gBS->InstallMultipleProtocolInterfaces (\r
292 &NewHandle,\r
293 &gEfiCapsuleArchProtocolGuid,\r
294 NULL,\r
295 NULL\r
296 );\r
297 ASSERT_EFI_ERROR (Status);\r
298\r
299 return EFI_SUCCESS;\r
300}\r