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Commit | Line | Data |
---|---|---|
48837c22 | 1 | From 9c16a23fba659cdf0ce798aa085a4fb8c3bd47d1 Mon Sep 17 00:00:00 2001 |
2 | From: Olivier Martin <olivier.martin@arm.com> | |
3 | Date: Thu, 16 Feb 2012 15:50:59 +0000 | |
4 | Subject: [PATCH 2/3] ArmPkg/BdsLib: Added support for modifying the passed FDT blob | |
5 | ||
6 | - Add Linux CmdLine if not defined | |
7 | - Add initrd if not defined | |
8 | - Add CPU parking address if not defined | |
9 | - Add System Memory info if not defined | |
10 | --- | |
11 | ArmPkg/ArmPkg.dsc | 1 + | |
12 | ArmPkg/Library/BdsLib/BdsInternal.h | 9 + | |
13 | ArmPkg/Library/BdsLib/BdsLib.inf | 3 + | |
14 | ArmPkg/Library/BdsLib/BdsLinuxFdt.c | 353 ++++++++++++++++++++++++++++++++ | |
15 | ArmPkg/Library/BdsLib/BdsLinuxLoader.c | 8 + | |
16 | ArmPkg/Library/BdsLib/BdsLinuxLoader.h | 10 +- | |
17 | 6 files changed, 383 insertions(+), 1 deletions(-) | |
18 | mode change 100644 => 100755 ArmPkg/ArmPkg.dsc | |
19 | mode change 100644 => 100755 ArmPkg/Library/BdsLib/BdsInternal.h | |
20 | mode change 100644 => 100755 ArmPkg/Library/BdsLib/BdsLib.inf | |
21 | create mode 100755 ArmPkg/Library/BdsLib/BdsLinuxFdt.c | |
22 | ||
23 | diff --git a/ArmPkg/ArmPkg.dsc b/ArmPkg/ArmPkg.dsc | |
24 | old mode 100644 | |
25 | new mode 100755 | |
26 | index f4989a6..07c825d | |
27 | --- a/ArmPkg/ArmPkg.dsc | |
28 | +++ b/ArmPkg/ArmPkg.dsc | |
29 | @@ -72,6 +72,7 @@ | |
30 | SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf | |
31 | ||
32 | BdsLib|ArmPkg/Library/BdsLib/BdsLib.inf | |
33 | + FdtLib|EmbeddedPkg/Library/FdtLib/FdtLib.inf | |
34 | ||
35 | IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf | |
36 | ||
37 | diff --git a/ArmPkg/Library/BdsLib/BdsInternal.h b/ArmPkg/Library/BdsLib/BdsInternal.h | |
38 | old mode 100644 | |
39 | new mode 100755 | |
40 | index 880d780..80d21b2 | |
41 | --- a/ArmPkg/Library/BdsLib/BdsInternal.h | |
42 | +++ b/ArmPkg/Library/BdsLib/BdsInternal.h | |
43 | @@ -103,4 +103,13 @@ PrepareAtagList ( | |
44 | OUT UINT32 *AtagSize | |
45 | ); | |
46 | ||
47 | +EFI_STATUS | |
48 | +PrepareFdt ( | |
49 | + IN CONST CHAR8* CommandLineString, | |
50 | + IN EFI_PHYSICAL_ADDRESS InitrdImage, | |
51 | + IN UINTN InitrdImageSize, | |
52 | + IN OUT EFI_PHYSICAL_ADDRESS *FdtBlobBase, | |
53 | + IN OUT UINT32 *FdtBlobSize | |
54 | + ); | |
55 | + | |
56 | #endif | |
57 | diff --git a/ArmPkg/Library/BdsLib/BdsLib.inf b/ArmPkg/Library/BdsLib/BdsLib.inf | |
58 | old mode 100644 | |
59 | new mode 100755 | |
60 | index 20644f1..b3cab21 | |
61 | --- a/ArmPkg/Library/BdsLib/BdsLib.inf | |
62 | +++ b/ArmPkg/Library/BdsLib/BdsLib.inf | |
63 | @@ -27,6 +27,7 @@ | |
64 | ||
65 | BdsLinuxLoader.c | |
66 | BdsLinuxAtag.c | |
67 | + BdsLinuxFdt.c | |
68 | ||
69 | [Packages] | |
70 | MdePkg/MdePkg.dec | |
71 | @@ -41,9 +42,11 @@ | |
72 | HobLib | |
73 | PerformanceLib | |
74 | SerialPortLib | |
75 | + FdtLib | |
76 | ||
77 | [Guids] | |
78 | gEfiFileInfoGuid | |
79 | + gArmMpCoreInfoGuid | |
80 | ||
81 | [Protocols] | |
82 | gEfiBdsArchProtocolGuid | |
83 | diff --git a/ArmPkg/Library/BdsLib/BdsLinuxFdt.c b/ArmPkg/Library/BdsLib/BdsLinuxFdt.c | |
84 | new file mode 100755 | |
85 | index 0000000..5c14b65 | |
86 | --- /dev/null | |
87 | +++ b/ArmPkg/Library/BdsLib/BdsLinuxFdt.c | |
88 | @@ -0,0 +1,353 @@ | |
89 | +/** @file | |
90 | +* | |
91 | +* Copyright (c) 2011-2012, ARM Limited. All rights reserved. | |
92 | +* | |
93 | +* This program and the accompanying materials | |
94 | +* are licensed and made available under the terms and conditions of the BSD License | |
95 | +* which accompanies this distribution. The full text of the license may be found at | |
96 | +* http://opensource.org/licenses/bsd-license.php | |
97 | +* | |
98 | +* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
99 | +* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
100 | +* | |
101 | +**/ | |
102 | + | |
103 | +#include <Library/PcdLib.h> | |
104 | +#include <libfdt.h> | |
105 | + | |
106 | +#include "BdsInternal.h" | |
107 | + | |
108 | +#define LINUX_FDT_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxAtagMaxOffset)) | |
109 | + | |
110 | +#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1)) | |
111 | +#define PALIGN(p, a) ((void *)(ALIGN((unsigned long)(p), (a)))) | |
112 | +#define GET_CELL(p) (p += 4, *((const UINT32 *)(p-4))) | |
113 | + | |
114 | +STATIC | |
115 | +UINTN | |
116 | +IsPrintableString ( | |
117 | + IN CONST VOID* data, | |
118 | + IN UINTN len | |
119 | + ) | |
120 | +{ | |
121 | + CONST CHAR8 *s = data; | |
122 | + CONST CHAR8 *ss; | |
123 | + | |
124 | + // zero length is not | |
125 | + if (len == 0) { | |
126 | + return 0; | |
127 | + } | |
128 | + | |
129 | + // must terminate with zero | |
130 | + if (s[len - 1] != '\0') { | |
131 | + return 0; | |
132 | + } | |
133 | + | |
134 | + ss = s; | |
135 | + while (*s/* && isprint(*s)*/) { | |
136 | + s++; | |
137 | + } | |
138 | + | |
139 | + // not zero, or not done yet | |
140 | + if (*s != '\0' || (s + 1 - ss) < len) { | |
141 | + return 0; | |
142 | + } | |
143 | + | |
144 | + return 1; | |
145 | +} | |
146 | + | |
147 | +STATIC | |
148 | +VOID | |
149 | +PrintData ( | |
150 | + IN CONST CHAR8* data, | |
151 | + IN UINTN len | |
152 | + ) | |
153 | +{ | |
154 | + UINTN i; | |
155 | + CONST CHAR8 *p = data; | |
156 | + | |
157 | + // no data, don't print | |
158 | + if (len == 0) | |
159 | + return; | |
160 | + | |
161 | + if (IsPrintableString (data, len)) { | |
162 | + Print(L" = \"%a\"", (const char *)data); | |
163 | + } else if ((len % 4) == 0) { | |
164 | + Print(L" = <"); | |
165 | + for (i = 0; i < len; i += 4) { | |
166 | + Print(L"0x%08x%a", fdt32_to_cpu(GET_CELL(p)),i < (len - 4) ? " " : ""); | |
167 | + } | |
168 | + Print(L">"); | |
169 | + } else { | |
170 | + Print(L" = ["); | |
171 | + for (i = 0; i < len; i++) | |
172 | + Print(L"%02x%a", *p++, i < len - 1 ? " " : ""); | |
173 | + Print(L"]"); | |
174 | + } | |
175 | +} | |
176 | + | |
177 | +VOID | |
178 | +DebugDumpFdt ( | |
179 | + IN VOID* FdtBlob | |
180 | + ) | |
181 | +{ | |
182 | + struct fdt_header *bph; | |
183 | + UINT32 off_dt; | |
184 | + UINT32 off_str; | |
185 | + CONST CHAR8* p_struct; | |
186 | + CONST CHAR8* p_strings; | |
187 | + CONST CHAR8* p; | |
188 | + CONST CHAR8* s; | |
189 | + CONST CHAR8* t; | |
190 | + UINT32 tag; | |
191 | + UINTN sz; | |
192 | + UINTN depth; | |
193 | + UINTN shift; | |
194 | + UINT32 version; | |
195 | + | |
196 | + depth = 0; | |
197 | + shift = 4; | |
198 | + | |
199 | + bph = FdtBlob; | |
200 | + off_dt = fdt32_to_cpu(bph->off_dt_struct); | |
201 | + off_str = fdt32_to_cpu(bph->off_dt_strings); | |
202 | + p_struct = (CONST CHAR8*)FdtBlob + off_dt; | |
203 | + p_strings = (CONST CHAR8*)FdtBlob + off_str; | |
204 | + version = fdt32_to_cpu(bph->version); | |
205 | + | |
206 | + p = p_struct; | |
207 | + while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) { | |
208 | + | |
209 | + //printf("tag: 0x%08x (%d)\n", tag, p - p_struct); | |
210 | + | |
211 | + if (tag == FDT_BEGIN_NODE) { | |
212 | + s = p; | |
213 | + p = PALIGN(p + AsciiStrLen (s) + 1, 4); | |
214 | + | |
215 | + if (*s == '\0') | |
216 | + s = "/"; | |
217 | + | |
218 | + Print(L"%*s%a {\n", depth * shift, L" ", s); | |
219 | + | |
220 | + depth++; | |
221 | + continue; | |
222 | + } | |
223 | + | |
224 | + if (tag == FDT_END_NODE) { | |
225 | + depth--; | |
226 | + | |
227 | + Print(L"%*s};\n", depth * shift, L" "); | |
228 | + continue; | |
229 | + } | |
230 | + | |
231 | + if (tag == FDT_NOP) { | |
232 | + Print(L"%*s// [NOP]\n", depth * shift, L" "); | |
233 | + continue; | |
234 | + } | |
235 | + | |
236 | + if (tag != FDT_PROP) { | |
237 | + Print(L"%*s ** Unknown tag 0x%08x\n", depth * shift, L" ", tag); | |
238 | + break; | |
239 | + } | |
240 | + sz = fdt32_to_cpu(GET_CELL(p)); | |
241 | + s = p_strings + fdt32_to_cpu(GET_CELL(p)); | |
242 | + if (version < 16 && sz >= 8) | |
243 | + p = PALIGN(p, 8); | |
244 | + t = p; | |
245 | + | |
246 | + p = PALIGN(p + sz, 4); | |
247 | + | |
248 | + Print(L"%*s%a", depth * shift, L" ", s); | |
249 | + PrintData(t, sz); | |
250 | + Print(L";\n"); | |
251 | + } | |
252 | +} | |
253 | + | |
254 | +typedef struct { | |
255 | + UINTN Base; | |
256 | + UINTN Size; | |
257 | +} FdtRegion; | |
258 | + | |
259 | +EFI_STATUS | |
260 | +PrepareFdt ( | |
261 | + IN CONST CHAR8* CommandLineString, | |
262 | + IN EFI_PHYSICAL_ADDRESS InitrdImage, | |
263 | + IN UINTN InitrdImageSize, | |
264 | + IN OUT EFI_PHYSICAL_ADDRESS *FdtBlobBase, | |
265 | + IN OUT UINT32 *FdtBlobSize | |
266 | + ) | |
267 | +{ | |
268 | + EFI_STATUS Status; | |
269 | + EFI_PHYSICAL_ADDRESS NewFdtBlobBase; | |
270 | + UINTN NewFdtBlobSize; | |
271 | + VOID* fdt; | |
272 | + INTN err; | |
273 | + INTN node; | |
274 | + INTN cpu_node; | |
275 | + INTN lenp; | |
276 | + CONST VOID* BootArg; | |
277 | + EFI_PHYSICAL_ADDRESS InitrdImageStart; | |
278 | + EFI_PHYSICAL_ADDRESS InitrdImageEnd; | |
279 | + FdtRegion Region; | |
280 | + UINTN Index; | |
281 | + CHAR8 Name[10]; | |
282 | + LIST_ENTRY ResourceList; | |
283 | + BDS_SYSTEM_MEMORY_RESOURCE *Resource; | |
284 | + ARM_PROCESSOR_TABLE *ArmProcessorTable; | |
285 | + ARM_CORE_INFO *ArmCoreInfoTable; | |
286 | + UINT32 MpId; | |
287 | + UINT32 ClusterId; | |
288 | + UINT32 CoreId; | |
289 | + UINT64 CpuReleaseAddr; | |
290 | + | |
291 | + err = fdt_check_header ((VOID*)(UINTN)(*FdtBlobBase)); | |
292 | + if (err != 0) { | |
293 | + Print (L"ERROR: Device Tree header not valid (err:%d)\n", err); | |
294 | + return EFI_INVALID_PARAMETER; | |
295 | + } | |
296 | + | |
297 | + // Allocate memory for the new FDT | |
298 | + NewFdtBlobBase = LINUX_FDT_MAX_OFFSET; | |
299 | + NewFdtBlobSize = *FdtBlobSize + FDT_ADDITIONAL_ENTRIES_SIZE; | |
300 | + Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES(NewFdtBlobSize), &NewFdtBlobBase); | |
301 | + if (EFI_ERROR(Status)) { | |
302 | + DEBUG ((EFI_D_WARN, "Warning: Failed to allocate Fdt below 0x%lX (%r). The Fdt will be allocated somewhere else in System Memory.\n",NewFdtBlobBase,Status)); | |
303 | + Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES(NewFdtBlobSize), &NewFdtBlobBase); | |
304 | + ASSERT_EFI_ERROR(Status); | |
305 | + goto FAIL_NEW_FDT; | |
306 | + } | |
307 | + | |
308 | + // Load the Original FDT tree into the new region | |
309 | + fdt = (VOID*)(UINTN)NewFdtBlobBase; | |
310 | + err = fdt_open_into((VOID*)(UINTN)(*FdtBlobBase), fdt, NewFdtBlobSize); | |
311 | + if (err) { | |
312 | + DEBUG((EFI_D_ERROR, "fdt_open_into(): %a\n", fdt_strerror(err))); | |
313 | + Status = EFI_INVALID_PARAMETER; | |
314 | + goto FAIL_NEW_FDT; | |
315 | + } | |
316 | + | |
317 | + DEBUG_CODE_BEGIN(); | |
318 | + DebugDumpFdt (fdt); | |
319 | + DEBUG_CODE_END(); | |
320 | + | |
321 | + node = fdt_subnode_offset(fdt, 0, "chosen"); | |
322 | + if (node < 0) { | |
323 | + // The 'chosen' node does not exist, create it | |
324 | + node = fdt_add_subnode(fdt, 0, "chosen"); | |
325 | + if (node < 0) { | |
326 | + DEBUG((EFI_D_ERROR,"Error on finding 'chosen' node\n")); | |
327 | + Status = EFI_INVALID_PARAMETER; | |
328 | + goto FAIL_NEW_FDT; | |
329 | + } | |
330 | + } | |
331 | + | |
332 | + DEBUG_CODE_BEGIN(); | |
333 | + BootArg = fdt_getprop(fdt, node, "bootargs", &lenp); | |
334 | + if (BootArg != NULL) { | |
335 | + DEBUG((EFI_D_ERROR,"BootArg: %a\n",BootArg)); | |
336 | + } | |
337 | + DEBUG_CODE_END(); | |
338 | + | |
339 | + // Set Linux CmdLine | |
340 | + if ((CommandLineString != NULL) && (AsciiStrLen (CommandLineString) > 0)) { | |
341 | + err = fdt_setprop(fdt, node, "bootargs", CommandLineString, AsciiStrSize(CommandLineString)); | |
342 | + if (err) { | |
343 | + DEBUG((EFI_D_ERROR,"Fail to set new 'bootarg' (err:%d)\n",err)); | |
344 | + } | |
345 | + } | |
346 | + | |
347 | + // Set Linux Initrd | |
348 | + if (InitrdImageSize != 0) { | |
349 | + InitrdImageStart = cpu_to_fdt64 (InitrdImage); | |
350 | + err = fdt_setprop(fdt, node, "linux,initrd-start", &InitrdImageStart, sizeof(EFI_PHYSICAL_ADDRESS)); | |
351 | + if (err) { | |
352 | + DEBUG((EFI_D_ERROR,"Fail to set new 'linux,initrd-start' (err:%d)\n",err)); | |
353 | + } | |
354 | + InitrdImageEnd = cpu_to_fdt64 (InitrdImage + InitrdImageSize); | |
355 | + err = fdt_setprop(fdt, node, "linux,initrd-end", &InitrdImageEnd, sizeof(EFI_PHYSICAL_ADDRESS)); | |
356 | + if (err) { | |
357 | + DEBUG((EFI_D_ERROR,"Fail to set new 'linux,initrd-start' (err:%d)\n",err)); | |
358 | + } | |
359 | + } | |
360 | + | |
361 | + // Set Physical memory setup if does not exist | |
362 | + node = fdt_subnode_offset(fdt, 0, "memory"); | |
363 | + if (node < 0) { | |
364 | + // The 'chosen' node does not exist, create it | |
365 | + node = fdt_add_subnode(fdt, 0, "memory"); | |
366 | + if (node >= 0) { | |
367 | + fdt_setprop_string(fdt, node, "name", "memory"); | |
368 | + fdt_setprop_string(fdt, node, "device_type", "memory"); | |
369 | + | |
370 | + GetSystemMemoryResources (&ResourceList); | |
371 | + Resource = (BDS_SYSTEM_MEMORY_RESOURCE*)ResourceList.ForwardLink; | |
372 | + | |
373 | + if (sizeof(UINTN) == sizeof(UINT32)) { | |
374 | + Region.Base = cpu_to_fdt32((UINTN)Resource->PhysicalStart); | |
375 | + Region.Size = cpu_to_fdt32((UINTN)Resource->ResourceLength); | |
376 | + } else { | |
377 | + Region.Base = cpu_to_fdt64((UINTN)Resource->PhysicalStart); | |
378 | + Region.Size = cpu_to_fdt64((UINTN)Resource->ResourceLength); | |
379 | + } | |
380 | + | |
381 | + err = fdt_setprop(fdt, node, "reg", &Region, sizeof(Region)); | |
382 | + if (err) { | |
383 | + DEBUG((EFI_D_ERROR,"Fail to set new 'memory region' (err:%d)\n",err)); | |
384 | + } | |
385 | + } | |
386 | + } | |
387 | + | |
388 | + // Setup Arm Mpcore Info if it is a multi-core or multi-cluster platforms | |
389 | + for (Index=0; Index < gST->NumberOfTableEntries; Index++) { | |
390 | + // Check for correct GUID type | |
391 | + if (CompareGuid (&gArmMpCoreInfoGuid, &(gST->ConfigurationTable[Index].VendorGuid))) { | |
392 | + MpId = ArmReadMpidr (); | |
393 | + ClusterId = GET_CLUSTER_ID(MpId); | |
394 | + CoreId = GET_CORE_ID(MpId); | |
395 | + | |
396 | + node = fdt_subnode_offset(fdt, 0, "cpus"); | |
397 | + if (node < 0) { | |
398 | + // Create the /cpus node | |
399 | + node = fdt_add_subnode(fdt, 0, "cpus"); | |
400 | + fdt_setprop_string(fdt, node, "name", "cpus"); | |
401 | + fdt_setprop_cell(fdt, node, "#address-cells", 1); | |
402 | + fdt_setprop_cell(fdt, node, "#size-cells", 0); | |
403 | + } | |
404 | + | |
405 | + // Get pointer to ARM processor table | |
406 | + ArmProcessorTable = (ARM_PROCESSOR_TABLE *)gST->ConfigurationTable[Index].VendorTable; | |
407 | + ArmCoreInfoTable = ArmProcessorTable->ArmCpus; | |
408 | + | |
409 | + for (Index = 0; Index < ArmProcessorTable->NumberOfEntries; Index++) { | |
410 | + if (((ArmCoreInfoTable[Index].ClusterId != ClusterId) || (ArmCoreInfoTable[Index].CoreId != CoreId))) { | |
411 | + AsciiSPrint (Name, 10, "cpu@%d", Index); | |
412 | + cpu_node = fdt_subnode_offset(fdt, node, Name); | |
413 | + if (cpu_node < 0) { | |
414 | + cpu_node = fdt_add_subnode(fdt, node, Name); | |
415 | + } | |
416 | + fdt_setprop_string(fdt, cpu_node, "device-type", "cpu"); | |
417 | + fdt_setprop_string(fdt, cpu_node, "enable-method", "spin-table"); | |
418 | + fdt_setprop_string(fdt, cpu_node, "status", "disabled"); | |
419 | + CpuReleaseAddr = cpu_to_fdt64(ArmCoreInfoTable[Index].MailboxSetAddress); | |
420 | + fdt_setprop(fdt, cpu_node, "cpu-release-addr", &CpuReleaseAddr, sizeof(CpuReleaseAddr)); | |
421 | + } | |
422 | + } | |
423 | + break; | |
424 | + } | |
425 | + } | |
426 | + | |
427 | + DEBUG_CODE_BEGIN(); | |
428 | + DebugDumpFdt (fdt); | |
429 | + DEBUG_CODE_END(); | |
430 | + | |
431 | + *FdtBlobBase = NewFdtBlobBase; | |
432 | + *FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(NewFdtBlobBase));; | |
433 | + return EFI_SUCCESS; | |
434 | + | |
435 | +FAIL_NEW_FDT: | |
436 | + *FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(*FdtBlobBase)); | |
437 | + // Return success even if we failed to update the FDT blob. The original one is still valid. | |
438 | + return EFI_SUCCESS; | |
439 | +} | |
440 | + | |
441 | + | |
442 | diff --git a/ArmPkg/Library/BdsLib/BdsLinuxLoader.c b/ArmPkg/Library/BdsLib/BdsLinuxLoader.c | |
443 | index 12a8862..82fa811 100755 | |
444 | --- a/ArmPkg/Library/BdsLib/BdsLinuxLoader.c | |
445 | +++ b/ArmPkg/Library/BdsLib/BdsLinuxLoader.c | |
446 | @@ -241,6 +241,14 @@ BdsBootLinuxFdt ( | |
447 | Print (L"ERROR: Did not find Device Tree blob.\n"); | |
448 | return Status; | |
449 | } | |
450 | + | |
451 | + // By setting address=0 we leave the memory allocation to the function | |
452 | + Status = PrepareFdt (Arguments, InitrdImage, InitrdImageSize, &KernelParamsAddress, &KernelParamsSize); | |
453 | + if (EFI_ERROR(Status)) { | |
454 | + Print(L"ERROR: Can not load Linux kernel with Device Tree. Status=0x%X\n", Status); | |
455 | + return Status; | |
456 | + } | |
457 | + | |
458 | return StartLinux (LinuxImage, LinuxImageSize, KernelParamsAddress, KernelParamsSize, FdtMachineType); | |
459 | } | |
460 | ||
461 | diff --git a/ArmPkg/Library/BdsLib/BdsLinuxLoader.h b/ArmPkg/Library/BdsLib/BdsLinuxLoader.h | |
462 | index 8d58ce1..9e45e03 100755 | |
463 | --- a/ArmPkg/Library/BdsLib/BdsLinuxLoader.h | |
464 | +++ b/ArmPkg/Library/BdsLib/BdsLinuxLoader.h | |
465 | @@ -15,12 +15,20 @@ | |
466 | #ifndef __BDSLINUXLOADER_H | |
467 | #define __BDSLINUXLOADER_H | |
468 | ||
469 | +#include <Guid/ArmMpCoreInfo.h> | |
470 | + | |
471 | #define LINUX_UIMAGE_SIGNATURE 0x56190527 | |
472 | ||
473 | #define LINUX_ATAG_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxAtagMaxOffset)) | |
474 | #define LINUX_KERNEL_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxKernelMaxOffset)) | |
475 | ||
476 | -#define ATAG_MAX_SIZE 0x3000 | |
477 | +// Size allocated for the Atag list | |
478 | +#define ATAG_MAX_SIZE 0x3000 | |
479 | + | |
480 | +// Additional size that could be used for FDT entries added by the UEFI OS Loader | |
481 | +// Estimation based on: EDID (300bytes) + bootargs (200bytes) + initrd region (20bytes) | |
482 | +// + system memory region (20bytes) + mp_core entries (200 bytes) | |
483 | +#define FDT_ADDITIONAL_ENTRIES_SIZE 0x300 | |
484 | ||
485 | /* ATAG : list of possible tags */ | |
486 | #define ATAG_NONE 0x00000000 | |
487 | -- | |
488 | 1.7.0.4 | |
489 |