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275d4bd4 SV |
1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
4 | Copyright (c) 2016 HP Development Company, L.P.\r | |
a9da96ac | 5 | Copyright (c) 2016 - 2021, Arm Limited. All rights reserved.\r |
275d4bd4 | 6 | \r |
86094561 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
275d4bd4 SV |
8 | \r |
9 | **/\r | |
10 | \r | |
11 | #include <Base.h>\r | |
12 | #include <Pi/PiMmCis.h>\r | |
a776bbab | 13 | #include <Library/Arm/StandaloneMmCoreEntryPoint.h>\r |
275d4bd4 SV |
14 | #include <Library/DebugLib.h>\r |
15 | #include <Library/ArmSvcLib.h>\r | |
16 | #include <Library/ArmLib.h>\r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/HobLib.h>\r | |
19 | \r | |
20 | #include <Protocol/DebugSupport.h> // for EFI_SYSTEM_CONTEXT\r | |
21 | \r | |
22 | #include <Guid/ZeroGuid.h>\r | |
23 | #include <Guid/MmramMemoryReserve.h>\r | |
24 | \r | |
25 | \r | |
26 | #include "StandaloneMmCpu.h"\r | |
27 | \r | |
28 | // GUID to identify HOB with whereabouts of communication buffer with Normal\r | |
29 | // World\r | |
30 | extern EFI_GUID gEfiStandaloneMmNonSecureBufferGuid;\r | |
31 | \r | |
32 | // GUID to identify HOB where the entry point of this CPU driver will be\r | |
33 | // populated to allow the entry point driver to invoke it upon receipt of an\r | |
34 | // event\r | |
35 | extern EFI_GUID gEfiArmTfCpuDriverEpDescriptorGuid;\r | |
36 | \r | |
37 | //\r | |
38 | // Private copy of the MM system table for future use\r | |
39 | //\r | |
40 | EFI_MM_SYSTEM_TABLE *mMmst = NULL;\r | |
41 | \r | |
42 | //\r | |
43 | // Globals used to initialize the protocol\r | |
44 | //\r | |
45 | STATIC EFI_HANDLE mMmCpuHandle = NULL;\r | |
46 | \r | |
9a0f88b5 SM |
47 | /** Returns the HOB data for the matching HOB GUID.\r |
48 | \r | |
49 | @param [in] HobList Pointer to the HOB list.\r | |
50 | @param [in] HobGuid The GUID for the HOB.\r | |
51 | @param [out] HobData Pointer to the HOB data.\r | |
52 | \r | |
53 | @retval EFI_SUCCESS The function completed successfully.\r | |
54 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
55 | @retval EFI_NOT_FOUND Could not find HOB with matching GUID.\r | |
56 | **/\r | |
275d4bd4 SV |
57 | EFI_STATUS\r |
58 | GetGuidedHobData (\r | |
59 | IN VOID *HobList,\r | |
60 | IN CONST EFI_GUID *HobGuid,\r | |
61 | OUT VOID **HobData\r | |
62 | )\r | |
63 | {\r | |
64 | EFI_HOB_GUID_TYPE *Hob;\r | |
65 | \r | |
a9da96ac | 66 | if ((HobList == NULL) || (HobGuid == NULL) || (HobData == NULL)) {\r |
275d4bd4 | 67 | return EFI_INVALID_PARAMETER;\r |
a9da96ac | 68 | }\r |
275d4bd4 SV |
69 | \r |
70 | Hob = GetNextGuidHob (HobGuid, HobList);\r | |
a9da96ac | 71 | if (Hob == NULL) {\r |
275d4bd4 | 72 | return EFI_NOT_FOUND;\r |
a9da96ac | 73 | }\r |
275d4bd4 SV |
74 | \r |
75 | *HobData = GET_GUID_HOB_DATA (Hob);\r | |
a9da96ac | 76 | if (*HobData == NULL) {\r |
275d4bd4 | 77 | return EFI_NOT_FOUND;\r |
a9da96ac | 78 | }\r |
275d4bd4 SV |
79 | \r |
80 | return EFI_SUCCESS;\r | |
81 | }\r | |
82 | \r | |
9a0f88b5 SM |
83 | /** Entry point for the Standalone MM CPU driver.\r |
84 | \r | |
85 | @param [in] ImageHandle Unused. Not actual image handle.\r | |
86 | @param [in] SystemTable Pointer to MM System table.\r | |
87 | \r | |
88 | @retval EFI_SUCCESS The function completed successfully.\r | |
89 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
90 | @retval EFI_OUT_OF_RESOURCES Out of resources.\r | |
91 | @retval EFI_NOT_FOUND Failed to find the HOB for the CPU\r | |
92 | driver endpoint descriptor.\r | |
93 | **/\r | |
275d4bd4 | 94 | EFI_STATUS\r |
c8102727 | 95 | StandaloneMmCpuInitialize (\r |
9a0f88b5 | 96 | IN EFI_HANDLE ImageHandle, // not actual imagehandle\r |
275d4bd4 SV |
97 | IN EFI_MM_SYSTEM_TABLE *SystemTable // not actual systemtable\r |
98 | )\r | |
99 | {\r | |
100 | ARM_TF_CPU_DRIVER_EP_DESCRIPTOR *CpuDriverEntryPointDesc;\r | |
101 | EFI_CONFIGURATION_TABLE *ConfigurationTable;\r | |
102 | MP_INFORMATION_HOB_DATA *MpInformationHobData;\r | |
103 | EFI_MMRAM_DESCRIPTOR *NsCommBufMmramRange;\r | |
104 | EFI_STATUS Status;\r | |
105 | EFI_HANDLE DispatchHandle;\r | |
106 | UINT32 MpInfoSize;\r | |
107 | UINTN Index;\r | |
108 | UINTN ArraySize;\r | |
109 | VOID *HobStart;\r | |
110 | \r | |
111 | ASSERT (SystemTable != NULL);\r | |
112 | mMmst = SystemTable;\r | |
113 | \r | |
114 | // publish the MM config protocol so the MM core can register its entry point\r | |
115 | Status = mMmst->MmInstallProtocolInterface (\r | |
116 | &mMmCpuHandle,\r | |
117 | &gEfiMmConfigurationProtocolGuid,\r | |
118 | EFI_NATIVE_INTERFACE,\r | |
119 | &mMmConfig\r | |
120 | );\r | |
121 | if (EFI_ERROR (Status)) {\r | |
122 | return Status;\r | |
123 | }\r | |
124 | \r | |
125 | // register the root MMI handler\r | |
126 | Status = mMmst->MmiHandlerRegister (\r | |
127 | PiMmCpuTpFwRootMmiHandler,\r | |
128 | NULL,\r | |
129 | &DispatchHandle\r | |
130 | );\r | |
131 | if (EFI_ERROR (Status)) {\r | |
132 | return Status;\r | |
133 | }\r | |
134 | \r | |
135 | // Retrieve the Hoblist from the MMST to extract the details of the NS\r | |
136 | // communication buffer that has been reserved by S-EL1/EL3\r | |
137 | ConfigurationTable = mMmst->MmConfigurationTable;\r | |
138 | for (Index = 0; Index < mMmst->NumberOfTableEntries; Index++) {\r | |
139 | if (CompareGuid (&gEfiHobListGuid, &(ConfigurationTable[Index].VendorGuid))) {\r | |
140 | break;\r | |
141 | }\r | |
142 | }\r | |
143 | \r | |
144 | // Bail out if the Hoblist could not be found\r | |
145 | if (Index >= mMmst->NumberOfTableEntries) {\r | |
146 | DEBUG ((DEBUG_INFO, "Hoblist not found - 0x%x\n", Index));\r | |
147 | return EFI_OUT_OF_RESOURCES;\r | |
148 | }\r | |
149 | \r | |
150 | HobStart = ConfigurationTable[Index].VendorTable;\r | |
151 | \r | |
152 | //\r | |
153 | // Locate the HOB with the buffer to populate the entry point of this driver\r | |
154 | //\r | |
155 | Status = GetGuidedHobData (\r | |
156 | HobStart,\r | |
157 | &gEfiArmTfCpuDriverEpDescriptorGuid,\r | |
158 | (VOID **) &CpuDriverEntryPointDesc\r | |
159 | );\r | |
160 | if (EFI_ERROR (Status)) {\r | |
161 | DEBUG ((DEBUG_INFO, "ArmTfCpuDriverEpDesc HOB data extraction failed - 0x%x\n", Status));\r | |
162 | return Status;\r | |
163 | }\r | |
164 | \r | |
165 | // Share the entry point of the CPU driver\r | |
166 | DEBUG ((DEBUG_INFO, "Sharing Cpu Driver EP *0x%lx = 0x%lx\n",\r | |
b7f0226a EC |
167 | (UINTN) CpuDriverEntryPointDesc->ArmTfCpuDriverEpPtr,\r |
168 | (UINTN) PiMmStandaloneArmTfCpuDriverEntry));\r | |
c8102727 | 169 | *(CpuDriverEntryPointDesc->ArmTfCpuDriverEpPtr) = PiMmStandaloneArmTfCpuDriverEntry;\r |
275d4bd4 SV |
170 | \r |
171 | // Find the descriptor that contains the whereabouts of the buffer for\r | |
172 | // communication with the Normal world.\r | |
173 | Status = GetGuidedHobData (\r | |
174 | HobStart,\r | |
175 | &gEfiStandaloneMmNonSecureBufferGuid,\r | |
176 | (VOID **) &NsCommBufMmramRange\r | |
177 | );\r | |
178 | if (EFI_ERROR (Status)) {\r | |
179 | DEBUG ((DEBUG_INFO, "NsCommBufMmramRange HOB data extraction failed - 0x%x\n", Status));\r | |
180 | return Status;\r | |
181 | }\r | |
182 | \r | |
b7f0226a EC |
183 | DEBUG ((DEBUG_INFO, "mNsCommBuffer.PhysicalStart - 0x%lx\n", (UINTN) NsCommBufMmramRange->PhysicalStart));\r |
184 | DEBUG ((DEBUG_INFO, "mNsCommBuffer.PhysicalSize - 0x%lx\n", (UINTN) NsCommBufMmramRange->PhysicalSize));\r | |
275d4bd4 SV |
185 | \r |
186 | CopyMem (&mNsCommBuffer, NsCommBufMmramRange, sizeof(EFI_MMRAM_DESCRIPTOR));\r | |
187 | DEBUG ((DEBUG_INFO, "mNsCommBuffer: 0x%016lx - 0x%lx\n", mNsCommBuffer.CpuStart, mNsCommBuffer.PhysicalSize));\r | |
188 | \r | |
189 | //\r | |
190 | // Extract the MP information from the Hoblist\r | |
191 | //\r | |
192 | Status = GetGuidedHobData (\r | |
193 | HobStart,\r | |
194 | &gMpInformationHobGuid,\r | |
195 | (VOID **) &MpInformationHobData\r | |
196 | );\r | |
197 | if (EFI_ERROR (Status)) {\r | |
198 | DEBUG ((DEBUG_INFO, "MpInformationHob extraction failed - 0x%x\n", Status));\r | |
199 | return Status;\r | |
200 | }\r | |
201 | \r | |
202 | //\r | |
203 | // Allocate memory for the MP information and copy over the MP information\r | |
204 | // passed by Trusted Firmware. Use the number of processors passed in the HOB\r | |
205 | // to copy the processor information\r | |
206 | //\r | |
207 | MpInfoSize = sizeof (MP_INFORMATION_HOB_DATA) +\r | |
208 | (sizeof (EFI_PROCESSOR_INFORMATION) *\r | |
209 | MpInformationHobData->NumberOfProcessors);\r | |
210 | Status = mMmst->MmAllocatePool (\r | |
211 | EfiRuntimeServicesData,\r | |
212 | MpInfoSize,\r | |
213 | (VOID **) &mMpInformationHobData\r | |
214 | );\r | |
215 | if (EFI_ERROR (Status)) {\r | |
216 | DEBUG ((DEBUG_INFO, "mMpInformationHobData mem alloc failed - 0x%x\n", Status));\r | |
217 | return Status;\r | |
218 | }\r | |
219 | \r | |
220 | CopyMem (mMpInformationHobData, MpInformationHobData, MpInfoSize);\r | |
221 | \r | |
222 | // Print MP information\r | |
223 | DEBUG ((DEBUG_INFO, "mMpInformationHobData: 0x%016lx - 0x%lx\n",\r | |
224 | mMpInformationHobData->NumberOfProcessors,\r | |
225 | mMpInformationHobData->NumberOfEnabledProcessors));\r | |
226 | for (Index = 0; Index < mMpInformationHobData->NumberOfProcessors; Index++) {\r | |
227 | DEBUG ((DEBUG_INFO, "mMpInformationHobData[0x%lx]: %d, %d, %d\n",\r | |
228 | mMpInformationHobData->ProcessorInfoBuffer[Index].ProcessorId,\r | |
229 | mMpInformationHobData->ProcessorInfoBuffer[Index].Location.Package,\r | |
230 | mMpInformationHobData->ProcessorInfoBuffer[Index].Location.Core,\r | |
231 | mMpInformationHobData->ProcessorInfoBuffer[Index].Location.Thread));\r | |
232 | }\r | |
233 | \r | |
234 | //\r | |
235 | // Allocate memory for a table to hold pointers to a\r | |
236 | // EFI_MM_COMMUNICATE_HEADER for each CPU\r | |
237 | //\r | |
238 | ArraySize = sizeof (EFI_MM_COMMUNICATE_HEADER *) *\r | |
239 | mMpInformationHobData->NumberOfEnabledProcessors;\r | |
240 | Status = mMmst->MmAllocatePool (\r | |
241 | EfiRuntimeServicesData,\r | |
242 | ArraySize,\r | |
243 | (VOID **) &PerCpuGuidedEventContext\r | |
244 | );\r | |
245 | if (EFI_ERROR (Status)) {\r | |
246 | DEBUG ((DEBUG_INFO, "PerCpuGuidedEventContext mem alloc failed - 0x%x\n", Status));\r | |
247 | return Status;\r | |
248 | }\r | |
249 | return Status;\r | |
250 | }\r |