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1 | /** @file\r |
2 | *\r | |
3 | * Shell command for launching AXF files.\r | |
4 | *\r | |
5 | * Copyright (c) 2014, ARM Limited. All rights reserved.\r | |
6 | *\r | |
7 | * This program and the accompanying materials\r | |
8 | * are licensed and made available under the terms and conditions of the BSD License\r | |
9 | * which accompanies this distribution. The full text of the license may be found at\r | |
10 | * http://opensource.org/licenses/bsd-license.php\r | |
11 | *\r | |
12 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | *\r | |
15 | **/\r | |
16 | \r | |
17 | #include <Guid/GlobalVariable.h>\r | |
cc053ee6 | 18 | \r |
ced216f8 HL |
19 | #include <Library/PrintLib.h>\r |
20 | #include <Library/HandleParsingLib.h>\r | |
21 | #include <Library/DevicePathLib.h>\r | |
22 | #include <Library/BaseLib.h>\r | |
23 | #include <Library/BaseMemoryLib.h>\r | |
cc053ee6 | 24 | #include <Library/BdsLib.h>\r |
ced216f8 HL |
25 | #include <Library/MemoryAllocationLib.h>\r |
26 | #include <Library/DebugLib.h>\r | |
27 | \r | |
28 | #include <Library/ArmLib.h>\r | |
29 | \r | |
30 | #include "ArmShellCmdRunAxf.h"\r | |
31 | #include "ElfLoader.h"\r | |
32 | #include "BootMonFsLoader.h"\r | |
33 | \r | |
34 | // Provide arguments to AXF?\r | |
35 | typedef VOID (*ELF_ENTRYPOINT)(UINTN arg0, UINTN arg1,\r | |
36 | UINTN arg2, UINTN arg3);\r | |
37 | \r | |
38 | \r | |
ced216f8 HL |
39 | STATIC\r |
40 | EFI_STATUS\r | |
41 | PreparePlatformHardware (\r | |
42 | VOID\r | |
43 | )\r | |
44 | {\r | |
45 | //Note: Interrupts will be disabled by the GIC driver when ExitBootServices() will be called.\r | |
46 | \r | |
47 | // Clean before Disable else the Stack gets corrupted with old data.\r | |
48 | ArmCleanDataCache ();\r | |
49 | ArmDisableDataCache ();\r | |
50 | // Invalidate all the entries that might have snuck in.\r | |
51 | ArmInvalidateDataCache ();\r | |
52 | \r | |
53 | // Disable and invalidate the instruction cache\r | |
54 | ArmDisableInstructionCache ();\r | |
55 | ArmInvalidateInstructionCache ();\r | |
56 | \r | |
57 | // Turn off MMU\r | |
58 | ArmDisableMmu();\r | |
59 | \r | |
60 | return EFI_SUCCESS;\r | |
61 | }\r | |
62 | \r | |
63 | // Process arguments to pass to AXF?\r | |
64 | STATIC CONST SHELL_PARAM_ITEM ParamList[] = {\r | |
65 | {NULL, TypeMax}\r | |
66 | };\r | |
67 | \r | |
68 | \r | |
69 | /**\r | |
70 | This is the shell command handler function pointer callback type. This\r | |
71 | function handles the command when it is invoked in the shell.\r | |
72 | \r | |
73 | @param[in] This The instance of the\r | |
74 | EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
75 | @param[in] SystemTable The pointer to the system table.\r | |
76 | @param[in] ShellParameters The parameters associated with the command.\r | |
77 | @param[in] Shell The instance of the shell protocol used in the\r | |
78 | context of processing this command.\r | |
79 | \r | |
80 | @return EFI_SUCCESS The operation was successful.\r | |
81 | @return other The operation failed.\r | |
82 | **/\r | |
83 | SHELL_STATUS\r | |
84 | EFIAPI\r | |
85 | ShellDynCmdRunAxfHandler (\r | |
86 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r | |
87 | IN EFI_SYSTEM_TABLE *SystemTable,\r | |
88 | IN EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,\r | |
89 | IN EFI_SHELL_PROTOCOL *Shell\r | |
90 | )\r | |
91 | {\r | |
92 | LIST_ENTRY *ParamPackage;\r | |
93 | EFI_STATUS Status;\r | |
94 | SHELL_STATUS ShellStatus;\r | |
95 | SHELL_FILE_HANDLE FileHandle;\r | |
96 | ELF_ENTRYPOINT StartElf;\r | |
97 | CONST CHAR16 *FileName;\r | |
98 | EFI_FILE_INFO *Info;\r | |
99 | UINTN FileSize;\r | |
100 | VOID *FileData;\r | |
101 | VOID *Entrypoint;\r | |
102 | LIST_ENTRY LoadList;\r | |
103 | LIST_ENTRY *Node;\r | |
104 | LIST_ENTRY *NextNode;\r | |
105 | RUNAXF_LOAD_LIST *LoadNode;\r | |
106 | CHAR16 *TmpFileName;\r | |
107 | CHAR16 *TmpChar16;\r | |
108 | \r | |
109 | \r | |
110 | ShellStatus = SHELL_SUCCESS;\r | |
111 | FileHandle = NULL;\r | |
112 | FileData = NULL;\r | |
113 | InitializeListHead (&LoadList);\r | |
114 | \r | |
115 | // Only install if they are not there yet? First time or every time?\r | |
116 | // These can change if the shell exits and start again.\r | |
117 | Status = gBS->InstallMultipleProtocolInterfaces (&gImageHandle,\r | |
118 | &gEfiShellProtocolGuid, Shell,\r | |
119 | &gEfiShellParametersProtocolGuid, ShellParameters,\r | |
120 | NULL);\r | |
121 | \r | |
122 | if (EFI_ERROR (Status)) {\r | |
123 | return SHELL_DEVICE_ERROR;\r | |
124 | }\r | |
125 | \r | |
126 | // Update the protocols for the application library\r | |
127 | Status = ShellInitialize ();\r | |
128 | ASSERT_EFI_ERROR (Status);\r | |
129 | // Add support to load AXF with optipnal args?\r | |
130 | \r | |
131 | //\r | |
132 | // Process Command Line arguments\r | |
133 | //\r | |
134 | Status = ShellCommandLineParse (ParamList, &ParamPackage, NULL, TRUE);\r | |
135 | if (EFI_ERROR (Status)) {\r | |
136 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_INVALID_ARG), gRunAxfHiiHandle);\r | |
137 | ShellStatus = SHELL_INVALID_PARAMETER;\r | |
138 | } else {\r | |
139 | //\r | |
140 | // Check for "-?"\r | |
141 | //\r | |
142 | if ((ShellCommandLineGetFlag (ParamPackage, L"-?")) ||\r | |
143 | (ShellCommandLineGetRawValue (ParamPackage, 1) == NULL)) {\r | |
144 | //\r | |
145 | // We didn't get a file to load\r | |
146 | //\r | |
147 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_INVALID_ARG), gRunAxfHiiHandle);\r | |
148 | ShellStatus = SHELL_INVALID_PARAMETER;\r | |
149 | } else {\r | |
150 | // For the moment we assume we only ever get one file to load with no arguments.\r | |
151 | FileName = ShellCommandLineGetRawValue (ParamPackage, 1);\r | |
152 | Status = ShellOpenFileByName (FileName, &FileHandle, EFI_FILE_MODE_READ, 0);\r | |
153 | if (EFI_ERROR (Status)) {\r | |
154 | // BootMonFS supports file extensions, but they are stripped by default\r | |
155 | // when the NOR is programmed.\r | |
156 | // Remove the file extension and try to open again.\r | |
157 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_FILE_NOT_FOUND),\r | |
158 | gRunAxfHiiHandle, FileName);\r | |
159 | // Go through the filename and remove file extension. Preserve the\r | |
160 | // original name.\r | |
161 | TmpFileName = AllocateCopyPool (StrSize (FileName), (VOID *)FileName);\r | |
162 | if (TmpFileName != NULL) {\r | |
163 | TmpChar16 = StrStr (TmpFileName, L".");\r | |
164 | if (TmpChar16 != NULL) {\r | |
165 | *TmpChar16 = '\0';\r | |
166 | DEBUG((EFI_D_ERROR, "Trying to open file: %s\n", TmpFileName));\r | |
167 | Status = ShellOpenFileByName (TmpFileName, &FileHandle,\r | |
168 | EFI_FILE_MODE_READ, 0);\r | |
169 | }\r | |
170 | FreePool (TmpFileName);\r | |
171 | }\r | |
172 | // Do we now have an open file after trying again?\r | |
173 | if (EFI_ERROR (Status)) {\r | |
174 | ShellStatus = SHELL_INVALID_PARAMETER;\r | |
175 | FileHandle = NULL;\r | |
176 | }\r | |
177 | }\r | |
178 | \r | |
179 | if (FileHandle != NULL) {\r | |
180 | Info = ShellGetFileInfo (FileHandle);\r | |
181 | FileSize = (UINTN) Info->FileSize;\r | |
182 | FreePool (Info);\r | |
183 | \r | |
184 | //\r | |
185 | // Allocate buffer to read file. 'Runtime' so we can access it after\r | |
186 | // ExitBootServices().\r | |
187 | //\r | |
188 | FileData = AllocateRuntimeZeroPool (FileSize);\r | |
189 | if (FileData == NULL) {\r | |
190 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_NO_MEM), gRunAxfHiiHandle);\r | |
191 | ShellStatus = SHELL_OUT_OF_RESOURCES;\r | |
192 | } else {\r | |
193 | //\r | |
194 | // Read file into Buffer\r | |
195 | //\r | |
196 | Status = ShellReadFile (FileHandle, &FileSize, FileData);\r | |
197 | if (EFI_ERROR (Status)) {\r | |
198 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_READ_FAIL), gRunAxfHiiHandle);\r | |
199 | SHELL_FREE_NON_NULL (FileData);\r | |
200 | FileData = NULL;\r | |
201 | ShellStatus = SHELL_DEVICE_ERROR;\r | |
202 | }\r | |
203 | }\r | |
204 | }\r | |
205 | }\r | |
206 | \r | |
207 | //\r | |
208 | // Free the command line package\r | |
209 | //\r | |
210 | ShellCommandLineFreeVarList (ParamPackage);\r | |
211 | }\r | |
212 | \r | |
213 | // We have a file in memory. Try to work out if we can use it.\r | |
214 | // It can either be in ELF format or BootMonFS format.\r | |
215 | if (FileData != NULL) {\r | |
216 | // Do some validation on the file before we try to load it. The file can\r | |
217 | // either be an proper ELF file or one processed by the FlashLoader.\r | |
218 | // Since the data might need to go to various locations in memory we cannot\r | |
219 | // load the data directly while UEFI is running. We use the file loaders to\r | |
220 | // populate a linked list of data and load addresses. This is processed and\r | |
221 | // data copied to where it needs to go after calling ExitBootServices. At\r | |
222 | // that stage we've reached the point of no return, so overwriting UEFI code\r | |
223 | // does not make a difference.\r | |
224 | Status = ElfCheckFile (FileData);\r | |
225 | if (!EFI_ERROR (Status)) {\r | |
226 | // Load program into memory\r | |
227 | Status = ElfLoadFile ((VOID*)FileData, &Entrypoint, &LoadList);\r | |
228 | } else {\r | |
229 | // Try to see if it is a BootMonFs executable\r | |
230 | Status = BootMonFsCheckFile ((EFI_FILE_HANDLE)FileHandle);\r | |
231 | if (!EFI_ERROR (Status)) {\r | |
232 | // Load program into memory\r | |
233 | Status = BootMonFsLoadFile ((EFI_FILE_HANDLE)FileHandle,\r | |
234 | (VOID*)FileData, &Entrypoint, &LoadList);\r | |
235 | } else {\r | |
236 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_RUNAXF_BAD_FILE),\r | |
237 | gRunAxfHiiHandle);\r | |
238 | SHELL_FREE_NON_NULL (FileData);\r | |
239 | ShellStatus = SHELL_UNSUPPORTED;\r | |
240 | }\r | |
241 | }\r | |
242 | }\r | |
243 | \r | |
244 | // Program load list created.\r | |
245 | // Shutdown UEFI, copy and jump to code.\r | |
246 | if (!IsListEmpty (&LoadList) && !EFI_ERROR (Status)) {\r | |
247 | // Exit boot services here. This means we cannot return and cannot assume to\r | |
248 | // have access to UEFI functions.\r | |
249 | Status = ShutdownUefiBootServices ();\r | |
250 | if (EFI_ERROR (Status)) {\r | |
251 | DEBUG ((EFI_D_ERROR,"Can not shutdown UEFI boot services. Status=0x%X\n",\r | |
252 | Status));\r | |
253 | } else {\r | |
254 | // Process linked list. Copy data to Memory.\r | |
255 | Node = GetFirstNode (&LoadList);\r | |
256 | while (!IsNull (&LoadList, Node)) {\r | |
257 | LoadNode = (RUNAXF_LOAD_LIST *)Node;\r | |
258 | // Do we have data to copy or do we need to set Zeroes (.bss)?\r | |
259 | if (LoadNode->Zeroes) {\r | |
260 | ZeroMem ((VOID*)LoadNode->MemOffset, LoadNode->Length);\r | |
261 | } else {\r | |
262 | CopyMem ((VOID *)LoadNode->MemOffset, (VOID *)LoadNode->FileOffset,\r | |
263 | LoadNode->Length);\r | |
264 | }\r | |
265 | Node = GetNextNode (&LoadList, Node);\r | |
266 | }\r | |
267 | \r | |
268 | //\r | |
269 | // Switch off interrupts, caches, mmu, etc\r | |
270 | //\r | |
271 | Status = PreparePlatformHardware ();\r | |
272 | ASSERT_EFI_ERROR (Status);\r | |
273 | \r | |
274 | StartElf = (ELF_ENTRYPOINT)Entrypoint;\r | |
275 | StartElf (0,0,0,0);\r | |
276 | \r | |
277 | // We should never get here.. But if we do, spin..\r | |
278 | ASSERT (FALSE);\r | |
279 | while (1);\r | |
280 | }\r | |
281 | }\r | |
282 | \r | |
283 | // Free file related information as we are returning to UEFI.\r | |
284 | Node = GetFirstNode (&LoadList);\r | |
285 | while (!IsNull (&LoadList, Node)) {\r | |
286 | NextNode = RemoveEntryList (Node);\r | |
287 | FreePool (Node);\r | |
288 | Node = NextNode;\r | |
289 | }\r | |
290 | SHELL_FREE_NON_NULL (FileData);\r | |
291 | if (FileHandle != NULL) {\r | |
292 | ShellCloseFile (&FileHandle);\r | |
293 | }\r | |
294 | \r | |
295 | // Uninstall protocols as we don't know if they will change.\r | |
296 | // If the shell exits and come in again these mappings may be different\r | |
297 | // and cause a crash.\r | |
298 | Status = gBS->UninstallMultipleProtocolInterfaces (gImageHandle,\r | |
299 | &gEfiShellProtocolGuid, Shell,\r | |
300 | &gEfiShellParametersProtocolGuid, ShellParameters,\r | |
301 | NULL);\r | |
302 | \r | |
303 | if (EFI_ERROR (Status) && ShellStatus == SHELL_SUCCESS) {\r | |
304 | ShellStatus = SHELL_DEVICE_ERROR;\r | |
305 | }\r | |
306 | \r | |
307 | return ShellStatus;\r | |
308 | }\r | |
309 | \r | |
310 | \r | |
311 | /**\r | |
312 | This is the command help handler function pointer callback type. This\r | |
313 | function is responsible for displaying help information for the associated\r | |
314 | command.\r | |
315 | \r | |
316 | @param[in] This The instance of the\r | |
317 | EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
318 | @param[in] Language The pointer to the language string to use.\r | |
319 | \r | |
320 | @return string Pool allocated help string, must be freed by\r | |
321 | caller.\r | |
322 | **/\r | |
323 | CHAR16*\r | |
324 | EFIAPI\r | |
325 | ShellDynCmdRunAxfGetHelp (\r | |
326 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r | |
327 | IN CONST CHAR8 *Language\r | |
328 | )\r | |
329 | {\r | |
330 | CHAR16 *HelpText;\r | |
331 | \r | |
332 | ASSERT (gRunAxfHiiHandle != NULL);\r | |
333 | \r | |
334 | // This allocates memory. The caller is responsoible to free.\r | |
335 | HelpText = HiiGetString (gRunAxfHiiHandle, STRING_TOKEN (STR_GET_HELP_RUNAXF),\r | |
336 | Language);\r | |
337 | \r | |
338 | return HelpText;\r | |
339 | }\r |