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1 | /** @file\r | |
2 | C Entry point for the SEC. First C code after the reset vector.\r | |
3 | \r | |
4 | Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r | |
5 | \r | |
6 | All rights reserved. This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include <PiPei.h>\r | |
17 | \r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/PrePiLib.h>\r | |
20 | #include <Library/PcdLib.h>\r | |
21 | #include <Library/IoLib.h>\r | |
22 | #include <Library/ArmLib.h>\r | |
23 | #include <Library/PeCoffGetEntryPointLib.h>\r | |
24 | \r | |
25 | #include <Ppi/GuidedSectionExtraction.h>\r | |
26 | #include <Guid/LzmaDecompress.h>\r | |
27 | \r | |
28 | #include "LzmaDecompress.h"\r | |
29 | \r | |
30 | VOID\r | |
31 | EFIAPI \r | |
32 | _ModuleEntryPoint(\r | |
33 | VOID\r | |
34 | );\r | |
35 | \r | |
36 | CHAR8 *\r | |
37 | DeCygwinPathIfNeeded (\r | |
38 | IN CHAR8 *Name\r | |
39 | );\r | |
40 | \r | |
41 | RETURN_STATUS\r | |
42 | EFIAPI\r | |
43 | SerialPortInitialize (\r | |
44 | VOID\r | |
45 | );\r | |
46 | \r | |
47 | \r | |
48 | VOID\r | |
49 | UartInit (\r | |
50 | VOID\r | |
51 | )\r | |
52 | {\r | |
53 | // SEC phase needs to run library constructors by hand.\r | |
54 | // This assumes we are linked agains the SerialLib\r | |
55 | // In non SEC modules the init call is in autogenerated code.\r | |
56 | SerialPortInitialize ();\r | |
57 | }\r | |
58 | \r | |
59 | VOID\r | |
60 | InitCache (\r | |
61 | IN UINT32 MemoryBase,\r | |
62 | IN UINT32 MemoryLength\r | |
63 | );\r | |
64 | \r | |
65 | EFI_STATUS\r | |
66 | EFIAPI\r | |
67 | ExtractGuidedSectionLibConstructor (\r | |
68 | VOID\r | |
69 | );\r | |
70 | \r | |
71 | EFI_STATUS\r | |
72 | EFIAPI\r | |
73 | LzmaDecompressLibConstructor (\r | |
74 | VOID\r | |
75 | );\r | |
76 | \r | |
77 | /**\r | |
78 | If the build is done on cygwin the paths are cygpaths. \r | |
79 | /cygdrive/c/tmp.txt vs c:\tmp.txt so we need to convert\r | |
80 | them to work with RVD commands\r | |
81 | \r | |
82 | This is just code to help print out RVD symbol load command.\r | |
83 | If you build with cygwin paths aren't compatible with RVD.\r | |
84 | \r | |
85 | @param Name Path to convert if needed\r | |
86 | \r | |
87 | **/\r | |
88 | CHAR8 *\r | |
89 | SecDeCygwinPathIfNeeded (\r | |
90 | IN CHAR8 *Name\r | |
91 | )\r | |
92 | {\r | |
93 | CHAR8 *Ptr;\r | |
94 | UINTN Index;\r | |
95 | UINTN Len;\r | |
96 | \r | |
97 | Ptr = AsciiStrStr (Name, "/cygdrive/");\r | |
98 | if (Ptr == NULL) {\r | |
99 | return Name;\r | |
100 | }\r | |
101 | \r | |
102 | Len = AsciiStrLen (Ptr);\r | |
103 | \r | |
104 | // convert "/cygdrive" to spaces\r | |
105 | for (Index = 0; Index < 9; Index++) {\r | |
106 | Ptr[Index] = ' ';\r | |
107 | }\r | |
108 | \r | |
109 | // convert /c to c:\r | |
110 | Ptr[9] = Ptr[10];\r | |
111 | Ptr[10] = ':';\r | |
112 | \r | |
113 | // switch path seperators\r | |
114 | for (Index = 11; Index < Len; Index++) {\r | |
115 | if (Ptr[Index] == '/') {\r | |
116 | Ptr[Index] = '\\' ;\r | |
117 | }\r | |
118 | }\r | |
119 | \r | |
120 | return Name;\r | |
121 | }\r | |
122 | \r | |
123 | \r | |
124 | VOID\r | |
125 | CEntryPoint (\r | |
126 | IN VOID *MemoryBase,\r | |
127 | IN UINTN MemorySize,\r | |
128 | IN VOID *StackBase,\r | |
129 | IN UINTN StackSize\r | |
130 | )\r | |
131 | {\r | |
132 | VOID *HobBase;\r | |
133 | \r | |
134 | // Build a basic HOB list\r | |
135 | HobBase = (VOID *)(UINTN)(FixedPcdGet32(PcdEmbeddedFdBaseAddress) + FixedPcdGet32(PcdEmbeddedFdSize));\r | |
136 | CreateHobList (MemoryBase, MemorySize, HobBase, StackBase);\r | |
137 | \r | |
138 | \r | |
139 | // Enable program flow prediction, if supported.\r | |
140 | ArmEnableBranchPrediction ();\r | |
141 | \r | |
142 | // Initialize CPU cache\r | |
143 | InitCache ((UINT32)MemoryBase, (UINT32)MemorySize);\r | |
144 | \r | |
145 | // Add memory allocation hob for relocated FD\r | |
146 | BuildMemoryAllocationHob (FixedPcdGet32(PcdEmbeddedFdBaseAddress), FixedPcdGet32(PcdEmbeddedFdSize), EfiBootServicesData);\r | |
147 | \r | |
148 | // Add the FVs to the hob list\r | |
149 | BuildFvHob (PcdGet32(PcdFlashFvMainBase), PcdGet32(PcdFlashFvMainSize));\r | |
150 | \r | |
151 | // Start talking\r | |
152 | UartInit ();\r | |
153 | DEBUG ((EFI_D_ERROR, "UART Enabled\n"));\r | |
154 | \r | |
155 | DEBUG_CODE_BEGIN ();\r | |
156 | //\r | |
157 | // On a debug build print out information about the SEC. This is really info about\r | |
158 | // the PE/COFF file we are currently running from. Useful for loading symbols in a\r | |
159 | // debugger. Remember our image is really part of the FV.\r | |
160 | //\r | |
161 | RETURN_STATUS Status;\r | |
162 | EFI_PEI_FV_HANDLE VolumeHandle;\r | |
163 | EFI_PEI_FILE_HANDLE FileHandle;\r | |
164 | VOID *PeCoffImage;\r | |
165 | UINT32 Offset;\r | |
166 | CHAR8 *FilePath;\r | |
167 | FfsAnyFvFindFirstFile (EFI_FV_FILETYPE_SECURITY_CORE, &VolumeHandle, &FileHandle);\r | |
168 | Status = FfsFindSectionData (EFI_SECTION_TE, FileHandle, &PeCoffImage);\r | |
169 | if (EFI_ERROR (Status)) {\r | |
170 | // Usually is a TE (PI striped down PE/COFF), but could be a full PE/COFF\r | |
171 | Status = FfsFindSectionData (EFI_SECTION_PE32, FileHandle, &PeCoffImage);\r | |
172 | }\r | |
173 | if (!EFI_ERROR (Status)) {\r | |
174 | Offset = PeCoffGetSizeOfHeaders (PeCoffImage);\r | |
175 | FilePath = PeCoffLoaderGetPdbPointer (PeCoffImage);\r | |
176 | if (FilePath != NULL) {\r | |
177 | \r | |
178 | // \r | |
179 | // In general you should never have to use #ifdef __CC_ARM in the code. It\r | |
180 | // is hidden in the away in the MdePkg. But here we would like to print differnt things\r | |
181 | // for different toolchains. \r | |
182 | //\r | |
183 | #ifdef __CC_ARM\r | |
184 | // Print out the command for the RVD debugger to load symbols for this image\r | |
185 | DEBUG ((EFI_D_ERROR, "load /a /ni /np %a &0x%08x\n", SecDeCygwinPathIfNeeded (FilePath), (CHAR8 *)PeCoffImage + Offset));\r | |
186 | #elif __GNUC__\r | |
187 | // This may not work correctly if you generate PE/COFF directlyas then the Offset would not be required\r | |
188 | DEBUG ((EFI_D_ERROR, "add-symbol-file %a 0x%08x\n", FilePath, PeCoffImage + Offset));\r | |
189 | #else\r | |
190 | DEBUG ((EFI_D_ERROR, "SEC starts at 0x%08x with an entry point at 0x%08x %a\n", PeCoffImage, _ModuleEntryPoint, FilePath));\r | |
191 | #endif\r | |
192 | }\r | |
193 | }\r | |
194 | \r | |
195 | \r | |
196 | DEBUG_CODE_END ();\r | |
197 | \r | |
198 | \r | |
199 | // SEC phase needs to run library constructors by hand.\r | |
200 | ExtractGuidedSectionLibConstructor ();\r | |
201 | LzmaDecompressLibConstructor ();\r | |
202 | \r | |
203 | // Build HOBs to pass up our version of stuff the DXE Core needs to save space\r | |
204 | BuildPeCoffLoaderHob ();\r | |
205 | BuildExtractSectionHob (\r | |
206 | &gLzmaCustomDecompressGuid,\r | |
207 | LzmaGuidedSectionGetInfo,\r | |
208 | LzmaGuidedSectionExtraction\r | |
209 | );\r | |
210 | \r | |
211 | // Assume the FV that contains the SEC (our code) also contains a compressed FV.\r | |
212 | DecompressFirstFv ();\r | |
213 | \r | |
214 | // Load the DXE Core and transfer control to it\r | |
215 | LoadDxeCoreFromFv (NULL, 0);\r | |
216 | \r | |
217 | // DXE Core should always load and never return\r | |
218 | ASSERT (FALSE);\r | |
219 | }\r | |
220 | \r |