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0a6653bc | 1 | /** @file\r |
2 | *\r | |
7e91decd | 3 | * Copyright (c) 2011-2013, ARM Limited. All rights reserved.\r |
0a6653bc | 4 | *\r |
7e91decd | 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 | |
0a6653bc | 12 | *\r |
13 | **/\r | |
14 | \r | |
bc87b507 | 15 | #include <Library/ArmSmcLib.h>\r |
0a6653bc | 16 | #include <Library/PcdLib.h>\r |
17 | #include <libfdt.h>\r | |
18 | \r | |
bc87b507 | 19 | #include <IndustryStandard/ArmSmc.h>\r |
20 | \r | |
0a6653bc | 21 | #include "BdsInternal.h"\r |
22 | #include "BdsLinuxLoader.h"\r | |
23 | \r | |
24 | #define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))\r | |
25 | #define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a))))\r | |
26 | #define GET_CELL(p) (p += 4, *((const UINT32 *)(p-4)))\r | |
27 | \r | |
28 | STATIC\r | |
29 | UINTN\r | |
30 | IsPrintableString (\r | |
31 | IN CONST VOID* data,\r | |
32 | IN UINTN len\r | |
33 | )\r | |
34 | {\r | |
35 | CONST CHAR8 *s = data;\r | |
36 | CONST CHAR8 *ss;\r | |
37 | \r | |
38 | // Zero length is not\r | |
39 | if (len == 0) {\r | |
40 | return 0;\r | |
41 | }\r | |
42 | \r | |
43 | // Must terminate with zero\r | |
44 | if (s[len - 1] != '\0') {\r | |
45 | return 0;\r | |
46 | }\r | |
47 | \r | |
48 | ss = s;\r | |
49 | while (*s/* && isprint(*s)*/) {\r | |
50 | s++;\r | |
51 | }\r | |
52 | \r | |
53 | // Not zero, or not done yet\r | |
54 | if (*s != '\0' || (s + 1 - ss) < len) {\r | |
55 | return 0;\r | |
56 | }\r | |
57 | \r | |
58 | return 1;\r | |
59 | }\r | |
60 | \r | |
61 | STATIC\r | |
62 | VOID\r | |
63 | PrintData (\r | |
64 | IN CONST CHAR8* data,\r | |
65 | IN UINTN len\r | |
66 | )\r | |
67 | {\r | |
68 | UINTN i;\r | |
69 | CONST CHAR8 *p = data;\r | |
70 | \r | |
71 | // No data, don't print\r | |
72 | if (len == 0)\r | |
73 | return;\r | |
74 | \r | |
75 | if (IsPrintableString (data, len)) {\r | |
76 | Print(L" = \"%a\"", (const char *)data);\r | |
77 | } else if ((len % 4) == 0) {\r | |
78 | Print(L" = <");\r | |
79 | for (i = 0; i < len; i += 4) {\r | |
80 | Print(L"0x%08x%a", fdt32_to_cpu(GET_CELL(p)),i < (len - 4) ? " " : "");\r | |
81 | }\r | |
82 | Print(L">");\r | |
83 | } else {\r | |
84 | Print(L" = [");\r | |
85 | for (i = 0; i < len; i++)\r | |
86 | Print(L"%02x%a", *p++, i < len - 1 ? " " : "");\r | |
87 | Print(L"]");\r | |
88 | }\r | |
89 | }\r | |
90 | \r | |
91 | VOID\r | |
92 | DebugDumpFdt (\r | |
93 | IN VOID* FdtBlob\r | |
94 | )\r | |
95 | {\r | |
96 | struct fdt_header *bph;\r | |
97 | UINT32 off_dt;\r | |
98 | UINT32 off_str;\r | |
99 | CONST CHAR8* p_struct;\r | |
100 | CONST CHAR8* p_strings;\r | |
101 | CONST CHAR8* p;\r | |
102 | CONST CHAR8* s;\r | |
103 | CONST CHAR8* t;\r | |
104 | UINT32 tag;\r | |
105 | UINTN sz;\r | |
106 | UINTN depth;\r | |
107 | UINTN shift;\r | |
108 | UINT32 version;\r | |
109 | \r | |
a01e042d | 110 | {\r |
111 | // Can 'memreserve' be printed by below code?\r | |
112 | INTN num = fdt_num_mem_rsv(FdtBlob);\r | |
113 | INTN i, err;\r | |
114 | UINT64 addr = 0,size = 0;\r | |
115 | \r | |
116 | for (i = 0; i < num; i++) {\r | |
117 | err = fdt_get_mem_rsv(FdtBlob, i, &addr, &size);\r | |
118 | if (err) {\r | |
119 | DEBUG((EFI_D_ERROR, "Error (%d) : Cannot get memreserve section (%d)\n", err, i));\r | |
120 | }\r | |
121 | else {\r | |
122 | Print(L"/memreserve/ \t0x%lx \t0x%lx;\n",addr,size);\r | |
123 | }\r | |
124 | }\r | |
125 | }\r | |
126 | \r | |
0a6653bc | 127 | depth = 0;\r |
128 | shift = 4;\r | |
129 | \r | |
130 | bph = FdtBlob;\r | |
131 | off_dt = fdt32_to_cpu(bph->off_dt_struct);\r | |
132 | off_str = fdt32_to_cpu(bph->off_dt_strings);\r | |
133 | p_struct = (CONST CHAR8*)FdtBlob + off_dt;\r | |
134 | p_strings = (CONST CHAR8*)FdtBlob + off_str;\r | |
135 | version = fdt32_to_cpu(bph->version);\r | |
136 | \r | |
137 | p = p_struct;\r | |
138 | while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) {\r | |
139 | if (tag == FDT_BEGIN_NODE) {\r | |
140 | s = p;\r | |
141 | p = PALIGN(p + AsciiStrLen (s) + 1, 4);\r | |
142 | \r | |
143 | if (*s == '\0')\r | |
144 | s = "/";\r | |
145 | \r | |
146 | Print(L"%*s%a {\n", depth * shift, L" ", s);\r | |
147 | \r | |
148 | depth++;\r | |
149 | continue;\r | |
150 | }\r | |
151 | \r | |
152 | if (tag == FDT_END_NODE) {\r | |
153 | depth--;\r | |
154 | \r | |
155 | Print(L"%*s};\n", depth * shift, L" ");\r | |
156 | continue;\r | |
157 | }\r | |
158 | \r | |
159 | if (tag == FDT_NOP) {\r | |
160 | Print(L"%*s// [NOP]\n", depth * shift, L" ");\r | |
161 | continue;\r | |
162 | }\r | |
163 | \r | |
164 | if (tag != FDT_PROP) {\r | |
165 | Print(L"%*s ** Unknown tag 0x%08x\n", depth * shift, L" ", tag);\r | |
166 | break;\r | |
167 | }\r | |
168 | sz = fdt32_to_cpu(GET_CELL(p));\r | |
169 | s = p_strings + fdt32_to_cpu(GET_CELL(p));\r | |
170 | if (version < 16 && sz >= 8)\r | |
171 | p = PALIGN(p, 8);\r | |
172 | t = p;\r | |
173 | \r | |
174 | p = PALIGN(p + sz, 4);\r | |
175 | \r | |
176 | Print(L"%*s%a", depth * shift, L" ", s);\r | |
177 | PrintData(t, sz);\r | |
178 | Print(L";\n");\r | |
179 | }\r | |
180 | }\r | |
181 | \r | |
a01e042d | 182 | STATIC\r |
183 | BOOLEAN\r | |
184 | IsLinuxReservedRegion (\r | |
185 | IN EFI_MEMORY_TYPE MemoryType\r | |
186 | )\r | |
187 | {\r | |
188 | switch(MemoryType) {\r | |
189 | case EfiRuntimeServicesCode:\r | |
190 | case EfiRuntimeServicesData:\r | |
191 | case EfiUnusableMemory:\r | |
192 | case EfiACPIReclaimMemory:\r | |
193 | case EfiACPIMemoryNVS:\r | |
194 | return TRUE;\r | |
195 | default:\r | |
196 | return FALSE;\r | |
197 | }\r | |
198 | }\r | |
199 | \r | |
200 | \r | |
0a6653bc | 201 | typedef struct {\r |
202 | UINTN Base;\r | |
203 | UINTN Size;\r | |
204 | } FdtRegion;\r | |
205 | \r | |
206 | EFI_STATUS\r | |
207 | PrepareFdt (\r | |
208 | IN CONST CHAR8* CommandLineArguments,\r | |
209 | IN EFI_PHYSICAL_ADDRESS InitrdImage,\r | |
210 | IN UINTN InitrdImageSize,\r | |
211 | IN OUT EFI_PHYSICAL_ADDRESS *FdtBlobBase,\r | |
c63626b7 | 212 | IN OUT UINTN *FdtBlobSize\r |
0a6653bc | 213 | )\r |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | EFI_PHYSICAL_ADDRESS NewFdtBlobBase;\r | |
387653a4 | 217 | EFI_PHYSICAL_ADDRESS NewFdtBlobAllocation;\r |
0a6653bc | 218 | UINTN NewFdtBlobSize;\r |
387653a4 | 219 | UINT32 FdtAlignment;\r |
0a6653bc | 220 | VOID* fdt;\r |
221 | INTN err;\r | |
222 | INTN node;\r | |
223 | INTN cpu_node;\r | |
224 | INTN lenp;\r | |
225 | CONST VOID* BootArg;\r | |
bc87b507 | 226 | CONST VOID* Method;\r |
0a6653bc | 227 | EFI_PHYSICAL_ADDRESS InitrdImageStart;\r |
228 | EFI_PHYSICAL_ADDRESS InitrdImageEnd;\r | |
229 | FdtRegion Region;\r | |
230 | UINTN Index;\r | |
231 | CHAR8 Name[10];\r | |
232 | LIST_ENTRY ResourceList;\r | |
233 | BDS_SYSTEM_MEMORY_RESOURCE *Resource;\r | |
234 | ARM_PROCESSOR_TABLE *ArmProcessorTable;\r | |
235 | ARM_CORE_INFO *ArmCoreInfoTable;\r | |
236 | UINT32 MpId;\r | |
237 | UINT32 ClusterId;\r | |
238 | UINT32 CoreId;\r | |
239 | UINT64 CpuReleaseAddr;\r | |
a01e042d | 240 | UINTN MemoryMapSize;\r |
241 | EFI_MEMORY_DESCRIPTOR *MemoryMap;\r | |
242 | UINTN MapKey;\r | |
243 | UINTN DescriptorSize;\r | |
244 | UINT32 DescriptorVersion;\r | |
245 | UINTN Pages;\r | |
bc87b507 | 246 | BOOLEAN PsciSmcSupported;\r |
247 | UINTN Rx;\r | |
7e91decd | 248 | UINTN OriginalFdtSize;\r |
3809e6e0 | 249 | BOOLEAN CpusNodeExist;\r |
bc87b507 | 250 | \r |
251 | //\r | |
252 | // Ensure the Power State Coordination Interface (PSCI) SMCs are there if supported\r | |
253 | //\r | |
254 | PsciSmcSupported = FALSE;\r | |
255 | if (FeaturePcdGet (PcdArmPsciSupport) == TRUE) {\r | |
256 | // Check the SMC response to the Presence SMC\r | |
257 | Rx = ARM_SMC_ID_PRESENCE;\r | |
258 | ArmCallSmc (&Rx);\r | |
259 | if (Rx == 1) {\r | |
260 | // Check the SMC UID\r | |
261 | Rx = ARM_SMC_ID_UID;\r | |
262 | ArmCallSmc (&Rx);\r | |
263 | if (Rx == ARM_TRUSTZONE_UID_4LETTERID) {\r | |
264 | Rx = ARM_SMC_ID_UID + 1;\r | |
265 | ArmCallSmc (&Rx);\r | |
1a7b6d9e | 266 | if (Rx == ARM_TRUSTZONE_ARM_UID) {\r |
bc87b507 | 267 | PsciSmcSupported = TRUE;\r |
268 | }\r | |
269 | }\r | |
270 | if (PsciSmcSupported == FALSE) {\r | |
271 | DEBUG((EFI_D_ERROR,"Warning: The Power State Coordination Interface (PSCI) is not supported"\r | |
272 | "by your platform Trusted Firmware.\n"));\r | |
273 | }\r | |
274 | }\r | |
275 | }\r | |
0a6653bc | 276 | \r |
7e91decd | 277 | //\r |
278 | // Sanity checks on the original FDT blob.\r | |
279 | //\r | |
0a6653bc | 280 | err = fdt_check_header ((VOID*)(UINTN)(*FdtBlobBase));\r |
281 | if (err != 0) {\r | |
282 | Print (L"ERROR: Device Tree header not valid (err:%d)\n", err);\r | |
283 | return EFI_INVALID_PARAMETER;\r | |
284 | }\r | |
285 | \r | |
7e91decd | 286 | // The original FDT blob might have been loaded partially.\r |
287 | // Check that it is not the case.\r | |
288 | OriginalFdtSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(*FdtBlobBase));\r | |
289 | if (OriginalFdtSize > *FdtBlobSize) {\r | |
290 | Print (L"ERROR: Incomplete FDT. Only %d/%d bytes have been loaded.\n",\r | |
291 | *FdtBlobSize, OriginalFdtSize);\r | |
292 | return EFI_INVALID_PARAMETER;\r | |
293 | }\r | |
294 | \r | |
0a6653bc | 295 | //\r |
296 | // Allocate memory for the new FDT\r | |
297 | //\r | |
7e91decd | 298 | NewFdtBlobSize = OriginalFdtSize + FDT_ADDITIONAL_ENTRIES_SIZE;\r |
0a6653bc | 299 | \r |
387653a4 | 300 | // If FDT load address needs to be aligned, allocate more space.\r |
301 | FdtAlignment = PcdGet32 (PcdArmLinuxFdtAlignment);\r | |
302 | if (FdtAlignment != 0) {\r | |
303 | NewFdtBlobSize += FdtAlignment;\r | |
304 | }\r | |
305 | \r | |
0a6653bc | 306 | // Try below a watermark address\r |
307 | Status = EFI_NOT_FOUND;\r | |
387653a4 | 308 | if (PcdGet32 (PcdArmLinuxFdtMaxOffset) != 0) {\r |
0a6653bc | 309 | NewFdtBlobBase = LINUX_FDT_MAX_OFFSET;\r |
310 | Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(NewFdtBlobSize), &NewFdtBlobBase);\r | |
311 | if (EFI_ERROR(Status)) {\r | |
312 | DEBUG ((EFI_D_WARN, "Warning: Failed to load FDT below address 0x%lX (%r). Will try again at a random address anywhere.\n", NewFdtBlobBase, Status));\r | |
313 | }\r | |
314 | }\r | |
315 | \r | |
316 | // Try anywhere there is available space\r | |
317 | if (EFI_ERROR(Status)) {\r | |
318 | Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(NewFdtBlobSize), &NewFdtBlobBase);\r | |
319 | if (EFI_ERROR(Status)) {\r | |
320 | ASSERT_EFI_ERROR(Status);\r | |
a90e3279 | 321 | goto FAIL_ALLOCATE_NEW_FDT;\r |
0a6653bc | 322 | } else {\r |
323 | DEBUG ((EFI_D_WARN, "WARNING: Loaded FDT at random address 0x%lX.\nWARNING: There is a risk of accidental overwriting by other code/data.\n", NewFdtBlobBase));\r | |
324 | }\r | |
325 | }\r | |
326 | \r | |
387653a4 | 327 | NewFdtBlobAllocation = NewFdtBlobBase;\r |
328 | if (FdtAlignment != 0) {\r | |
329 | NewFdtBlobBase = ALIGN (NewFdtBlobBase, FdtAlignment);\r | |
330 | }\r | |
331 | \r | |
0a6653bc | 332 | // Load the Original FDT tree into the new region\r |
333 | fdt = (VOID*)(UINTN)NewFdtBlobBase;\r | |
334 | err = fdt_open_into((VOID*)(UINTN)(*FdtBlobBase), fdt, NewFdtBlobSize);\r | |
335 | if (err) {\r | |
336 | DEBUG((EFI_D_ERROR, "fdt_open_into(): %a\n", fdt_strerror(err)));\r | |
337 | Status = EFI_INVALID_PARAMETER;\r | |
338 | goto FAIL_NEW_FDT;\r | |
339 | }\r | |
340 | \r | |
341 | DEBUG_CODE_BEGIN();\r | |
342 | //DebugDumpFdt (fdt);\r | |
343 | DEBUG_CODE_END();\r | |
344 | \r | |
345 | node = fdt_subnode_offset(fdt, 0, "chosen");\r | |
346 | if (node < 0) {\r | |
347 | // The 'chosen' node does not exist, create it\r | |
348 | node = fdt_add_subnode(fdt, 0, "chosen");\r | |
349 | if (node < 0) {\r | |
350 | DEBUG((EFI_D_ERROR,"Error on finding 'chosen' node\n"));\r | |
351 | Status = EFI_INVALID_PARAMETER;\r | |
352 | goto FAIL_NEW_FDT;\r | |
353 | }\r | |
354 | }\r | |
355 | \r | |
356 | DEBUG_CODE_BEGIN();\r | |
357 | BootArg = fdt_getprop(fdt, node, "bootargs", &lenp);\r | |
358 | if (BootArg != NULL) {\r | |
359 | DEBUG((EFI_D_ERROR,"BootArg: %a\n",BootArg));\r | |
360 | }\r | |
361 | DEBUG_CODE_END();\r | |
362 | \r | |
a01e042d | 363 | //\r |
0a6653bc | 364 | // Set Linux CmdLine\r |
a01e042d | 365 | //\r |
0a6653bc | 366 | if ((CommandLineArguments != NULL) && (AsciiStrLen (CommandLineArguments) > 0)) {\r |
367 | err = fdt_setprop(fdt, node, "bootargs", CommandLineArguments, AsciiStrSize(CommandLineArguments));\r | |
368 | if (err) {\r | |
369 | DEBUG((EFI_D_ERROR,"Fail to set new 'bootarg' (err:%d)\n",err));\r | |
370 | }\r | |
371 | }\r | |
372 | \r | |
a01e042d | 373 | //\r |
0a6653bc | 374 | // Set Linux Initrd\r |
a01e042d | 375 | //\r |
0a6653bc | 376 | if (InitrdImageSize != 0) {\r |
377 | InitrdImageStart = cpu_to_fdt64 (InitrdImage);\r | |
378 | err = fdt_setprop(fdt, node, "linux,initrd-start", &InitrdImageStart, sizeof(EFI_PHYSICAL_ADDRESS));\r | |
379 | if (err) {\r | |
380 | DEBUG((EFI_D_ERROR,"Fail to set new 'linux,initrd-start' (err:%d)\n",err));\r | |
381 | }\r | |
382 | InitrdImageEnd = cpu_to_fdt64 (InitrdImage + InitrdImageSize);\r | |
383 | err = fdt_setprop(fdt, node, "linux,initrd-end", &InitrdImageEnd, sizeof(EFI_PHYSICAL_ADDRESS));\r | |
384 | if (err) {\r | |
385 | DEBUG((EFI_D_ERROR,"Fail to set new 'linux,initrd-start' (err:%d)\n",err));\r | |
386 | }\r | |
387 | }\r | |
388 | \r | |
a01e042d | 389 | //\r |
0a6653bc | 390 | // Set Physical memory setup if does not exist\r |
a01e042d | 391 | //\r |
0a6653bc | 392 | node = fdt_subnode_offset(fdt, 0, "memory");\r |
393 | if (node < 0) {\r | |
394 | // The 'memory' node does not exist, create it\r | |
395 | node = fdt_add_subnode(fdt, 0, "memory");\r | |
396 | if (node >= 0) {\r | |
397 | fdt_setprop_string(fdt, node, "name", "memory");\r | |
398 | fdt_setprop_string(fdt, node, "device_type", "memory");\r | |
7e91decd | 399 | \r |
0a6653bc | 400 | GetSystemMemoryResources (&ResourceList);\r |
401 | Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceList.ForwardLink;\r | |
7e91decd | 402 | \r |
0a6653bc | 403 | if (sizeof(UINTN) == sizeof(UINT32)) {\r |
404 | Region.Base = cpu_to_fdt32((UINTN)Resource->PhysicalStart);\r | |
405 | Region.Size = cpu_to_fdt32((UINTN)Resource->ResourceLength);\r | |
406 | } else {\r | |
407 | Region.Base = cpu_to_fdt64((UINTN)Resource->PhysicalStart);\r | |
408 | Region.Size = cpu_to_fdt64((UINTN)Resource->ResourceLength);\r | |
409 | }\r | |
410 | \r | |
411 | err = fdt_setprop(fdt, node, "reg", &Region, sizeof(Region));\r | |
412 | if (err) {\r | |
413 | DEBUG((EFI_D_ERROR,"Fail to set new 'memory region' (err:%d)\n",err));\r | |
414 | }\r | |
415 | }\r | |
416 | }\r | |
417 | \r | |
a01e042d | 418 | //\r |
419 | // Add the memory regions reserved by the UEFI Firmware\r | |
420 | //\r | |
421 | \r | |
422 | // Retrieve the UEFI Memory Map\r | |
423 | MemoryMap = NULL;\r | |
424 | MemoryMapSize = 0;\r | |
425 | Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);\r | |
426 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
427 | Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;\r | |
428 | MemoryMap = AllocatePages (Pages);\r | |
429 | Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);\r | |
430 | }\r | |
431 | \r | |
432 | // Go through the list and add the reserved region to the Device Tree\r | |
433 | if (!EFI_ERROR(Status)) {\r | |
434 | for (Index = 0; Index < (MemoryMapSize / sizeof(EFI_MEMORY_DESCRIPTOR)); Index++) {\r | |
435 | if (IsLinuxReservedRegion ((EFI_MEMORY_TYPE)MemoryMap[Index].Type)) {\r | |
436 | DEBUG((DEBUG_VERBOSE, "Reserved region of type %d [0x%X, 0x%X]\n",\r | |
437 | MemoryMap[Index].Type,\r | |
438 | (UINTN)MemoryMap[Index].PhysicalStart,\r | |
439 | (UINTN)(MemoryMap[Index].PhysicalStart + MemoryMap[Index].NumberOfPages * EFI_PAGE_SIZE)));\r | |
440 | err = fdt_add_mem_rsv(fdt, MemoryMap[Index].PhysicalStart, MemoryMap[Index].NumberOfPages * EFI_PAGE_SIZE);\r | |
441 | if (err != 0) {\r | |
442 | Print(L"Warning: Fail to add 'memreserve' (err:%d)\n", err);\r | |
443 | }\r | |
444 | }\r | |
445 | }\r | |
446 | }\r | |
447 | \r | |
448 | //\r | |
0a6653bc | 449 | // Setup Arm Mpcore Info if it is a multi-core or multi-cluster platforms\r |
a01e042d | 450 | //\r |
0a6653bc | 451 | for (Index=0; Index < gST->NumberOfTableEntries; Index++) {\r |
452 | // Check for correct GUID type\r | |
453 | if (CompareGuid (&gArmMpCoreInfoGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {\r | |
454 | MpId = ArmReadMpidr ();\r | |
455 | ClusterId = GET_CLUSTER_ID(MpId);\r | |
456 | CoreId = GET_CORE_ID(MpId);\r | |
457 | \r | |
458 | node = fdt_subnode_offset(fdt, 0, "cpus");\r | |
459 | if (node < 0) {\r | |
460 | // Create the /cpus node\r | |
461 | node = fdt_add_subnode(fdt, 0, "cpus");\r | |
462 | fdt_setprop_string(fdt, node, "name", "cpus");\r | |
463 | fdt_setprop_cell(fdt, node, "#address-cells", 1);\r | |
464 | fdt_setprop_cell(fdt, node, "#size-cells", 0);\r | |
3809e6e0 | 465 | CpusNodeExist = FALSE;\r |
466 | } else {\r | |
467 | CpusNodeExist = TRUE;\r | |
0a6653bc | 468 | }\r |
469 | \r | |
470 | // Get pointer to ARM processor table\r | |
471 | ArmProcessorTable = (ARM_PROCESSOR_TABLE *)gST->ConfigurationTable[Index].VendorTable;\r | |
472 | ArmCoreInfoTable = ArmProcessorTable->ArmCpus;\r | |
473 | \r | |
474 | for (Index = 0; Index < ArmProcessorTable->NumberOfEntries; Index++) {\r | |
475 | AsciiSPrint (Name, 10, "cpu@%d", Index);\r | |
3809e6e0 | 476 | \r |
477 | // If the 'cpus' node did not exist then creates the 'cpu' nodes. In case 'cpus' node\r | |
478 | // is provided in the original FDT then we do not add any 'cpu' node.\r | |
479 | if (!CpusNodeExist) {\r | |
0a6653bc | 480 | cpu_node = fdt_add_subnode(fdt, node, Name);\r |
481 | fdt_setprop_string(fdt, cpu_node, "device-type", "cpu");\r | |
482 | fdt_setprop(fdt, cpu_node, "reg", &Index, sizeof(Index));\r | |
3809e6e0 | 483 | } else {\r |
484 | cpu_node = fdt_subnode_offset(fdt, node, Name);\r | |
0a6653bc | 485 | }\r |
486 | \r | |
bc87b507 | 487 | // If Power State Coordination Interface (PSCI) is not supported then it is expected the secondary\r |
39f58c9b | 488 | // cores are spinning waiting for the Operating System to release them\r |
3809e6e0 | 489 | if ((PsciSmcSupported == FALSE) && (cpu_node >= 0)) {\r |
39f58c9b | 490 | // We as the bootloader are responsible for either creating or updating\r |
491 | // these entries. Do not trust the entries in the DT. We only know about\r | |
492 | // 'spin-table' type. Do not try to update other types if defined.\r | |
bc87b507 | 493 | Method = fdt_getprop(fdt, cpu_node, "enable-method", &lenp);\r |
39f58c9b | 494 | if ( (Method == NULL) || (!AsciiStrCmp((CHAR8 *)Method, "spin-table")) ) {\r |
bc87b507 | 495 | fdt_setprop_string(fdt, cpu_node, "enable-method", "spin-table");\r |
496 | CpuReleaseAddr = cpu_to_fdt64(ArmCoreInfoTable[Index].MailboxSetAddress);\r | |
497 | fdt_setprop(fdt, cpu_node, "cpu-release-addr", &CpuReleaseAddr, sizeof(CpuReleaseAddr));\r | |
498 | \r | |
499 | // If it is not the primary core than the cpu should be disabled\r | |
500 | if (((ArmCoreInfoTable[Index].ClusterId != ClusterId) || (ArmCoreInfoTable[Index].CoreId != CoreId))) {\r | |
501 | fdt_setprop_string(fdt, cpu_node, "status", "disabled");\r | |
502 | }\r | |
39f58c9b | 503 | } else {\r |
504 | Print(L"Warning: Unsupported enable-method type for CPU[%d] : %a\n", Index, (CHAR8 *)Method);\r | |
bc87b507 | 505 | }\r |
0a6653bc | 506 | }\r |
507 | }\r | |
508 | break;\r | |
509 | }\r | |
510 | }\r | |
511 | \r | |
bc87b507 | 512 | // If the Power State Coordination Interface is supported then we signal it in the Device Tree\r |
513 | if (PsciSmcSupported == TRUE) {\r | |
514 | // Before to create it we check if the node is not already defined in the Device Tree\r | |
515 | node = fdt_subnode_offset(fdt, 0, "psci");\r | |
516 | if (node < 0) {\r | |
517 | // The 'psci' node does not exist, create it\r | |
518 | node = fdt_add_subnode(fdt, 0, "psci");\r | |
519 | if (node < 0) {\r | |
520 | DEBUG((EFI_D_ERROR,"Error on creating 'psci' node\n"));\r | |
521 | Status = EFI_INVALID_PARAMETER;\r | |
522 | goto FAIL_NEW_FDT;\r | |
523 | } else {\r | |
524 | fdt_setprop_string(fdt, node, "compatible", "arm,psci");\r | |
525 | fdt_setprop_string(fdt, node, "method", "smc");\r | |
526 | fdt_setprop_cell(fdt, node, "cpu_suspend", ARM_SMC_ARM_CPU_SUSPEND);\r | |
527 | fdt_setprop_cell(fdt, node, "cpu_off", ARM_SMC_ARM_CPU_OFF);\r | |
528 | fdt_setprop_cell(fdt, node, "cpu_on", ARM_SMC_ARM_CPU_ON);\r | |
529 | fdt_setprop_cell(fdt, node, "cpu_migrate", ARM_SMC_ARM_MIGRATE);\r | |
530 | }\r | |
531 | }\r | |
532 | }\r | |
533 | \r | |
0a6653bc | 534 | DEBUG_CODE_BEGIN();\r |
535 | //DebugDumpFdt (fdt);\r | |
536 | DEBUG_CODE_END();\r | |
537 | \r | |
a90e3279 | 538 | // If we succeeded to generate the new Device Tree then free the old Device Tree\r |
539 | gBS->FreePages (*FdtBlobBase, EFI_SIZE_TO_PAGES (*FdtBlobSize));\r | |
540 | \r | |
0a6653bc | 541 | *FdtBlobBase = NewFdtBlobBase;\r |
542 | *FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(NewFdtBlobBase));\r | |
543 | return EFI_SUCCESS;\r | |
544 | \r | |
545 | FAIL_NEW_FDT:\r | |
387653a4 | 546 | gBS->FreePages (NewFdtBlobAllocation, EFI_SIZE_TO_PAGES (NewFdtBlobSize));\r |
a90e3279 | 547 | \r |
548 | FAIL_ALLOCATE_NEW_FDT:\r | |
549 | *FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(*FdtBlobBase));\r | |
0a6653bc | 550 | // Return success even if we failed to update the FDT blob. The original one is still valid.\r |
551 | return EFI_SUCCESS;\r | |
552 | }\r | |
553 | \r | |
554 | \r |