]>
Commit | Line | Data |
---|---|---|
cf1d4549 JY |
1 | /** @file\r |
2 | \r | |
e37bb20c | 3 | Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r |
cf1d4549 JY |
4 | 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 | **/\r | |
13 | \r | |
14 | #include "SecMain.h"\r | |
15 | #include "SecFsp.h"\r | |
16 | \r | |
17 | EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI gSecTemporaryRamSupportPpi = {\r | |
18 | SecTemporaryRamSupport\r | |
19 | };\r | |
20 | \r | |
21 | EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {\r | |
22 | {\r | |
23 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
24 | &gEfiTemporaryRamSupportPpiGuid,\r | |
25 | &gSecTemporaryRamSupportPpi\r | |
26 | }\r | |
27 | };\r | |
28 | \r | |
29 | //\r | |
30 | // These are IDT entries pointing to 08:FFFFFFE4h.\r | |
31 | //\r | |
32 | UINT64 mIdtEntryTemplate = 0xffff8e000008ffe4ULL;\r | |
33 | \r | |
34 | /**\r | |
35 | \r | |
36 | Entry point to the C language phase of SEC. After the SEC assembly\r | |
37 | code has initialized some temporary memory and set up the stack,\r | |
38 | the control is transferred to this function.\r | |
39 | \r | |
40 | \r | |
41 | @param[in] SizeOfRam Size of the temporary memory available for use.\r | |
058dcbf2 | 42 | @param[in] TempRamBase Base address of temporary ram\r |
cf1d4549 JY |
43 | @param[in] BootFirmwareVolume Base address of the Boot Firmware Volume.\r |
44 | @param[in] PeiCore PeiCore entry point.\r | |
45 | @param[in] BootLoaderStack BootLoader stack.\r | |
46 | @param[in] ApiIdx the index of API.\r | |
47 | \r | |
48 | @return This function never returns.\r | |
49 | \r | |
50 | **/\r | |
51 | VOID\r | |
52 | EFIAPI\r | |
53 | SecStartup (\r | |
54 | IN UINT32 SizeOfRam,\r | |
55 | IN UINT32 TempRamBase,\r | |
56 | IN VOID *BootFirmwareVolume,\r | |
57 | IN PEI_CORE_ENTRY PeiCore,\r | |
58 | IN UINT32 BootLoaderStack,\r | |
59 | IN UINT32 ApiIdx\r | |
60 | )\r | |
61 | {\r | |
62 | EFI_SEC_PEI_HAND_OFF SecCoreData;\r | |
63 | IA32_DESCRIPTOR IdtDescriptor;\r | |
64 | SEC_IDT_TABLE IdtTableInStack;\r | |
65 | UINT32 Index;\r | |
66 | FSP_GLOBAL_DATA PeiFspData;\r | |
67 | UINT64 ExceptionHandler;\r | |
68 | \r | |
69 | //\r | |
70 | // Process all libraries constructor function linked to SecCore.\r | |
71 | //\r | |
72 | ProcessLibraryConstructorList ();\r | |
73 | \r | |
74 | //\r | |
75 | // Initialize floating point operating environment\r | |
76 | // to be compliant with UEFI spec.\r | |
77 | //\r | |
78 | InitializeFloatingPointUnits ();\r | |
79 | \r | |
80 | \r | |
81 | // |-------------------|---->\r | |
82 | // |Idt Table |\r | |
83 | // |-------------------|\r | |
84 | // |PeiService Pointer | PeiStackSize\r | |
85 | // |-------------------|\r | |
86 | // | |\r | |
87 | // | Stack |\r | |
88 | // |-------------------|---->\r | |
89 | // | |\r | |
90 | // | |\r | |
91 | // | Heap | PeiTemporayRamSize\r | |
92 | // | |\r | |
93 | // | |\r | |
94 | // |-------------------|----> TempRamBase\r | |
95 | IdtTableInStack.PeiService = NULL;\r | |
96 | ExceptionHandler = FspGetExceptionHandler(mIdtEntryTemplate);\r | |
97 | for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {\r | |
98 | CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&ExceptionHandler, sizeof (UINT64));\r | |
99 | }\r | |
100 | \r | |
101 | IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;\r | |
102 | IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);\r | |
103 | \r | |
104 | AsmWriteIdtr (&IdtDescriptor);\r | |
105 | \r | |
106 | //\r | |
107 | // Initialize the global FSP data region\r | |
108 | //\r | |
109 | FspGlobalDataInit (&PeiFspData, BootLoaderStack, (UINT8)ApiIdx);\r | |
110 | \r | |
111 | //\r | |
112 | // Update the base address and length of Pei temporary memory\r | |
113 | //\r | |
114 | SecCoreData.DataSize = sizeof (EFI_SEC_PEI_HAND_OFF);\r | |
115 | SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;\r | |
116 | SecCoreData.BootFirmwareVolumeSize = (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)BootFirmwareVolume)->FvLength;\r | |
117 | \r | |
118 | SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;\r | |
119 | SecCoreData.TemporaryRamSize = SizeOfRam;\r | |
120 | SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r | |
121 | SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize * PcdGet8 (PcdFspHeapSizePercentage) / 100;\r | |
122 | SecCoreData.StackBase = (VOID*)(UINTN)((UINTN)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize);\r | |
123 | SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize;\r | |
124 | \r | |
125 | DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeBase - 0x%x\n", SecCoreData.BootFirmwareVolumeBase));\r | |
126 | DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeSize - 0x%x\n", SecCoreData.BootFirmwareVolumeSize));\r | |
127 | DEBUG ((DEBUG_INFO, "Fsp TemporaryRamBase - 0x%x\n", SecCoreData.TemporaryRamBase));\r | |
128 | DEBUG ((DEBUG_INFO, "Fsp TemporaryRamSize - 0x%x\n", SecCoreData.TemporaryRamSize));\r | |
129 | DEBUG ((DEBUG_INFO, "Fsp PeiTemporaryRamBase - 0x%x\n", SecCoreData.PeiTemporaryRamBase));\r | |
130 | DEBUG ((DEBUG_INFO, "Fsp PeiTemporaryRamSize - 0x%x\n", SecCoreData.PeiTemporaryRamSize));\r | |
131 | DEBUG ((DEBUG_INFO, "Fsp StackBase - 0x%x\n", SecCoreData.StackBase));\r | |
132 | DEBUG ((DEBUG_INFO, "Fsp StackSize - 0x%x\n", SecCoreData.StackSize));\r | |
133 | \r | |
134 | //\r | |
135 | // Call PeiCore Entry\r | |
e37bb20c | 136 | //\r |
cf1d4549 JY |
137 | PeiCore (&SecCoreData, mPeiSecPlatformInformationPpi);\r |
138 | \r | |
139 | //\r | |
140 | // Should never be here\r | |
141 | //\r | |
142 | CpuDeadLoop ();\r | |
143 | }\r | |
144 | \r | |
145 | /**\r | |
146 | This service of the TEMPORARY_RAM_SUPPORT_PPI that migrates temporary RAM into\r | |
147 | permanent memory.\r | |
148 | \r | |
149 | @param[in] PeiServices Pointer to the PEI Services Table.\r | |
150 | @param[in] TemporaryMemoryBase Source Address in temporary memory from which the SEC or PEIM will copy the\r | |
151 | Temporary RAM contents.\r | |
152 | @param[in] PermanentMemoryBase Destination Address in permanent memory into which the SEC or PEIM will copy the\r | |
153 | Temporary RAM contents.\r | |
154 | @param[in] CopySize Amount of memory to migrate from temporary to permanent memory.\r | |
155 | \r | |
156 | @retval EFI_SUCCESS The data was successfully returned.\r | |
157 | @retval EFI_INVALID_PARAMETER PermanentMemoryBase + CopySize > TemporaryMemoryBase when\r | |
158 | TemporaryMemoryBase > PermanentMemoryBase.\r | |
159 | \r | |
160 | **/\r | |
161 | EFI_STATUS\r | |
162 | EFIAPI\r | |
163 | SecTemporaryRamSupport (\r | |
164 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
165 | IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r | |
166 | IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r | |
167 | IN UINTN CopySize\r | |
168 | )\r | |
169 | {\r | |
170 | IA32_DESCRIPTOR IdtDescriptor;\r | |
171 | VOID* OldHeap;\r | |
172 | VOID* NewHeap;\r | |
173 | VOID* OldStack;\r | |
174 | VOID* NewStack;\r | |
175 | UINTN HeapSize;\r | |
176 | UINTN StackSize;\r | |
177 | \r | |
178 | HeapSize = CopySize * PcdGet8 (PcdFspHeapSizePercentage) / 100 ;\r | |
179 | StackSize = CopySize - HeapSize;\r | |
e37bb20c | 180 | \r |
cf1d4549 JY |
181 | OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r |
182 | NewHeap = (VOID*)((UINTN)PermanentMemoryBase + StackSize);\r | |
183 | \r | |
184 | OldStack = (VOID*)((UINTN)TemporaryMemoryBase + HeapSize);\r | |
185 | NewStack = (VOID*)(UINTN)PermanentMemoryBase;\r | |
186 | \r | |
187 | //\r | |
188 | // Migrate Heap\r | |
189 | //\r | |
190 | CopyMem (NewHeap, OldHeap, HeapSize);\r | |
191 | \r | |
192 | //\r | |
193 | // Migrate Stack\r | |
194 | //\r | |
195 | CopyMem (NewStack, OldStack, StackSize);\r | |
196 | \r | |
197 | \r | |
198 | //\r | |
199 | // We need *not* fix the return address because currently,\r | |
200 | // The PeiCore is executed in flash.\r | |
201 | //\r | |
202 | \r | |
203 | //\r | |
204 | // Rebase IDT table in permanent memory\r | |
205 | //\r | |
206 | AsmReadIdtr (&IdtDescriptor);\r | |
207 | IdtDescriptor.Base = IdtDescriptor.Base - (UINTN)OldStack + (UINTN)NewStack;\r | |
208 | \r | |
209 | AsmWriteIdtr (&IdtDescriptor);\r | |
210 | \r | |
211 | //\r | |
212 | // Fixed the FSP data pointer\r | |
213 | //\r | |
214 | FspDataPointerFixUp ((UINTN)NewStack - (UINTN)OldStack);\r | |
215 | \r | |
216 | //\r | |
217 | // SecSwitchStack function must be invoked after the memory migration\r | |
058dcbf2 GL |
218 | // immediately, also we need fixup the stack change caused by new call into\r |
219 | // permanent memory.\r | |
cf1d4549 JY |
220 | //\r |
221 | SecSwitchStack (\r | |
222 | (UINT32) (UINTN) OldStack,\r | |
223 | (UINT32) (UINTN) NewStack\r | |
224 | );\r | |
225 | \r | |
226 | return EFI_SUCCESS;\r | |
227 | }\r |