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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2015, ARM Ltd. All rights reserved.<BR>\r | |
4 | \r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "FdtPlatform.h"\r | |
16 | \r | |
17 | #define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))\r | |
18 | #define PALIGN(p, a) ((void *)(ALIGN ((unsigned long)(p), (a))))\r | |
19 | #define GET_CELL(p) (p += 4, *((const uint32_t *)(p-4)))\r | |
20 | \r | |
21 | STATIC\r | |
22 | UINTN\r | |
23 | IsPrintableString (\r | |
24 | IN CONST VOID* data,\r | |
25 | IN UINTN len\r | |
26 | )\r | |
27 | {\r | |
28 | CONST CHAR8 *s = data;\r | |
29 | CONST CHAR8 *ss;\r | |
30 | \r | |
31 | // Zero length is not\r | |
32 | if (len == 0) {\r | |
33 | return 0;\r | |
34 | }\r | |
35 | \r | |
36 | // Must terminate with zero\r | |
37 | if (s[len - 1] != '\0') {\r | |
38 | return 0;\r | |
39 | }\r | |
40 | \r | |
41 | ss = s;\r | |
42 | while (*s/* && isprint (*s)*/) {\r | |
43 | s++;\r | |
44 | }\r | |
45 | \r | |
46 | // Not zero, or not done yet\r | |
47 | if (*s != '\0' || (s + 1 - ss) < len) {\r | |
48 | return 0;\r | |
49 | }\r | |
50 | \r | |
51 | return 1;\r | |
52 | }\r | |
53 | \r | |
54 | STATIC\r | |
55 | VOID\r | |
56 | PrintData (\r | |
57 | IN CONST CHAR8* data,\r | |
58 | IN UINTN len\r | |
59 | )\r | |
60 | {\r | |
61 | UINTN i;\r | |
62 | CONST CHAR8 *p = data;\r | |
63 | \r | |
64 | // No data, don't print\r | |
65 | if (len == 0)\r | |
66 | return;\r | |
67 | \r | |
68 | if (IsPrintableString (data, len)) {\r | |
69 | Print (L" = \"%a\"", (const char *)data);\r | |
70 | } else if ((len % 4) == 0) {\r | |
71 | Print (L" = <");\r | |
72 | for (i = 0; i < len; i += 4) {\r | |
73 | Print (L"0x%08x%a", fdt32_to_cpu (GET_CELL (p)), i < (len - 4) ? " " : "");\r | |
74 | }\r | |
75 | Print (L">");\r | |
76 | } else {\r | |
77 | Print (L" = [");\r | |
78 | for (i = 0; i < len; i++)\r | |
79 | Print (L"%02x%a", *p++, i < len - 1 ? " " : "");\r | |
80 | Print (L"]");\r | |
81 | }\r | |
82 | }\r | |
83 | \r | |
84 | STATIC\r | |
85 | VOID\r | |
86 | DumpFdt (\r | |
87 | IN VOID* FdtBlob\r | |
88 | )\r | |
89 | {\r | |
90 | struct fdt_header *bph;\r | |
91 | UINT32 off_dt;\r | |
92 | UINT32 off_str;\r | |
93 | CONST CHAR8* p_struct;\r | |
94 | CONST CHAR8* p_strings;\r | |
95 | CONST CHAR8* p;\r | |
96 | CONST CHAR8* s;\r | |
97 | CONST CHAR8* t;\r | |
98 | UINT32 tag;\r | |
99 | UINTN sz;\r | |
100 | UINTN depth;\r | |
101 | UINTN shift;\r | |
102 | UINT32 version;\r | |
103 | \r | |
104 | {\r | |
105 | // Can 'memreserve' be printed by below code?\r | |
106 | INTN num = fdt_num_mem_rsv (FdtBlob);\r | |
107 | INTN i, err;\r | |
108 | UINT64 addr = 0, size = 0;\r | |
109 | \r | |
110 | for (i = 0; i < num; i++) {\r | |
111 | err = fdt_get_mem_rsv (FdtBlob, i, &addr, &size);\r | |
112 | if (err) {\r | |
113 | DEBUG ((EFI_D_ERROR, "Error (%d) : Cannot get memreserve section (%d)\n", err, i));\r | |
114 | }\r | |
115 | else {\r | |
116 | Print (L"/memreserve/ \t0x%lx \t0x%lx;\n", addr, size);\r | |
117 | }\r | |
118 | }\r | |
119 | }\r | |
120 | \r | |
121 | depth = 0;\r | |
122 | shift = 4;\r | |
123 | \r | |
124 | bph = FdtBlob;\r | |
125 | off_dt = fdt32_to_cpu (bph->off_dt_struct);\r | |
126 | off_str = fdt32_to_cpu (bph->off_dt_strings);\r | |
127 | p_struct = (CONST CHAR8*)FdtBlob + off_dt;\r | |
128 | p_strings = (CONST CHAR8*)FdtBlob + off_str;\r | |
129 | version = fdt32_to_cpu (bph->version);\r | |
130 | \r | |
131 | p = p_struct;\r | |
132 | while ((tag = fdt32_to_cpu (GET_CELL (p))) != FDT_END) {\r | |
133 | if (tag == FDT_BEGIN_NODE) {\r | |
134 | s = p;\r | |
135 | p = PALIGN (p + AsciiStrLen (s) + 1, 4);\r | |
136 | \r | |
137 | if (*s == '\0')\r | |
138 | s = "/";\r | |
139 | \r | |
140 | Print (L"%*s%a {\n", depth * shift, L" ", s);\r | |
141 | \r | |
142 | depth++;\r | |
143 | continue;\r | |
144 | }\r | |
145 | \r | |
146 | if (tag == FDT_END_NODE) {\r | |
147 | depth--;\r | |
148 | \r | |
149 | Print (L"%*s};\n", depth * shift, L" ");\r | |
150 | continue;\r | |
151 | }\r | |
152 | \r | |
153 | if (tag == FDT_NOP) {\r | |
154 | Print (L"%*s// [NOP]\n", depth * shift, L" ");\r | |
155 | continue;\r | |
156 | }\r | |
157 | \r | |
158 | if (tag != FDT_PROP) {\r | |
159 | Print (L"%*s ** Unknown tag 0x%08x\n", depth * shift, L" ", tag);\r | |
160 | break;\r | |
161 | }\r | |
162 | sz = fdt32_to_cpu (GET_CELL (p));\r | |
163 | s = p_strings + fdt32_to_cpu (GET_CELL (p));\r | |
164 | if (version < 16 && sz >= 8)\r | |
165 | p = PALIGN (p, 8);\r | |
166 | t = p;\r | |
167 | \r | |
168 | p = PALIGN (p + sz, 4);\r | |
169 | \r | |
170 | Print (L"%*s%a", depth * shift, L" ", s);\r | |
171 | PrintData (t, sz);\r | |
172 | Print (L";\n");\r | |
173 | }\r | |
174 | }\r | |
175 | \r | |
176 | /**\r | |
177 | This is the shell command "dumpfdt" handler function. This function handles\r | |
178 | the command when it is invoked in the shell.\r | |
179 | \r | |
180 | @param[in] This The instance of the\r | |
181 | EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
182 | @param[in] SystemTable The pointer to the UEFI system table.\r | |
183 | @param[in] ShellParameters The parameters associated with the command.\r | |
184 | @param[in] Shell The instance of the shell protocol used in the\r | |
185 | context of processing this command.\r | |
186 | \r | |
187 | @return SHELL_SUCCESS The operation was successful.\r | |
188 | @return SHELL_ABORTED Operation aborted due to internal error.\r | |
189 | @return SHELL_NOT_FOUND Failed to locate the Device Tree into the EFI Configuration Table\r | |
190 | @return SHELL_OUT_OF_RESOURCES A memory allocation failed.\r | |
191 | \r | |
192 | **/\r | |
193 | SHELL_STATUS\r | |
194 | EFIAPI\r | |
195 | ShellDynCmdDumpFdtHandler (\r | |
196 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r | |
197 | IN EFI_SYSTEM_TABLE *SystemTable,\r | |
198 | IN EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters,\r | |
199 | IN EFI_SHELL_PROTOCOL *Shell\r | |
200 | )\r | |
201 | {\r | |
202 | SHELL_STATUS ShellStatus;\r | |
203 | EFI_STATUS Status;\r | |
204 | VOID *FdtBlob;\r | |
205 | \r | |
206 | ShellStatus = SHELL_SUCCESS;\r | |
207 | \r | |
208 | //\r | |
209 | // Install the Shell and Shell Parameters Protocols on the driver\r | |
210 | // image. This is necessary for the initialisation of the Shell\r | |
211 | // Library to succeed in the next step.\r | |
212 | //\r | |
213 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
214 | &gImageHandle,\r | |
215 | &gEfiShellProtocolGuid, Shell,\r | |
216 | &gEfiShellParametersProtocolGuid, ShellParameters,\r | |
217 | NULL\r | |
218 | );\r | |
219 | if (EFI_ERROR (Status)) {\r | |
220 | return SHELL_ABORTED;\r | |
221 | }\r | |
222 | \r | |
223 | //\r | |
224 | // Initialise the Shell Library as we are going to use it.\r | |
225 | // Assert that the return code is EFI_SUCCESS as it should.\r | |
226 | // To anticipate any change is the codes returned by\r | |
227 | // ShellInitialize(), leave in case of error.\r | |
228 | //\r | |
229 | Status = ShellInitialize ();\r | |
230 | if (EFI_ERROR (Status)) {\r | |
231 | ASSERT_EFI_ERROR (Status);\r | |
232 | return SHELL_ABORTED;\r | |
233 | }\r | |
234 | \r | |
235 | Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &FdtBlob);\r | |
236 | if (EFI_ERROR (Status)) {\r | |
237 | Print (L"ERROR: Did not find the Fdt Blob.\n");\r | |
238 | return EfiCodeToShellCode (Status);\r | |
239 | }\r | |
240 | \r | |
241 | DumpFdt (FdtBlob);\r | |
242 | \r | |
243 | gBS->UninstallMultipleProtocolInterfaces (\r | |
244 | gImageHandle,\r | |
245 | &gEfiShellProtocolGuid, Shell,\r | |
246 | &gEfiShellParametersProtocolGuid, ShellParameters,\r | |
247 | NULL\r | |
248 | );\r | |
249 | \r | |
250 | return ShellStatus;\r | |
251 | }\r | |
252 | \r | |
253 | /**\r | |
254 | This is the shell command "dumpfdt" help handler function. This\r | |
255 | function returns the formatted help for the "dumpfdt" command.\r | |
256 | The format matchs that in Appendix B of the revision 2.1 of the\r | |
257 | UEFI Shell Specification.\r | |
258 | \r | |
259 | @param[in] This The instance of the EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL.\r | |
260 | @param[in] Language The pointer to the language string to use.\r | |
261 | \r | |
262 | @return CHAR16* Pool allocated help string, must be freed by caller.\r | |
263 | **/\r | |
264 | CHAR16*\r | |
265 | EFIAPI\r | |
266 | ShellDynCmdDumpFdtGetHelp (\r | |
267 | IN EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *This,\r | |
268 | IN CONST CHAR8 *Language\r | |
269 | )\r | |
270 | {\r | |
271 | //\r | |
272 | // This allocates memory. The caller has to free the allocated memory.\r | |
273 | //\r | |
274 | return HiiGetString (\r | |
275 | mFdtPlatformDxeHiiHandle,\r | |
276 | STRING_TOKEN (STR_GET_HELP_DUMPFDT),\r | |
277 | Language\r | |
278 | );\r | |
279 | }\r |