Root/
Source at commit 2058 created 11 years 10 months ago. By cosmo1t, merged cparms security fixes | |
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1 | ␊ |
2 | /*␊ |
3 | * Copyright 2007 David F. Elliott.␉ All rights reserved.␊ |
4 | */␊ |
5 | ␊ |
6 | #include "libsaio.h"␊ |
7 | #include "boot.h"␊ |
8 | #include "bootstruct.h"␊ |
9 | #include "efi.h"␊ |
10 | #include "acpi.h"␊ |
11 | #include "fake_efi.h"␊ |
12 | #include "efi_tables.h"␊ |
13 | #include "platform.h"␊ |
14 | #include "acpi_patcher.h"␊ |
15 | #include "smbios.h"␊ |
16 | #include "device_inject.h"␊ |
17 | #include "convert.h"␊ |
18 | #include "pci.h"␊ |
19 | #include "sl.h"␊ |
20 | ␊ |
21 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
22 | ␊ |
23 | /*␊ |
24 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
25 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
26 | * possible but would have to be maintained as a separate patch because it is␊ |
27 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
28 | *␊ |
29 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
30 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
31 | * to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
32 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
33 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
34 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
35 | * filled in appropriately.␉Modern xnu requires a system table and a runtime␊ |
36 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
37 | * these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
38 | * early on in the boot process if the system table pointer is zero.␊ |
39 | *␊ |
40 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
41 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
42 | * it panics the bootstrap process very early on.␊ |
43 | *␊ |
44 | * As of this writing, the current implementation found here is good enough␊ |
45 | * to make the currently available xnu kernel boot without modification on a␊ |
46 | * system with an appropriate processor. With a minor source modification to␊ |
47 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
48 | * processors the kernel can be made to boot on other processors so long as␊ |
49 | * the code can be executed by the processor and the machine contains the␊ |
50 | * necessary hardware.␊ |
51 | */␊ |
52 | ␊ |
53 | /*==========================================================================␊ |
54 | * Utility function to make a device tree string from an EFI_GUID␊ |
55 | */␊ |
56 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
57 | {␊ |
58 | ␉char *string = malloc(37);␊ |
59 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
60 | ␉return string;␊ |
61 | }␊ |
62 | ␊ |
63 | /*==========================================================================␊ |
64 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
65 | */␊ |
66 | static uint64_t ptov64(uint32_t addr)␊ |
67 | {␊ |
68 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
69 | }␊ |
70 | ␊ |
71 | /*==========================================================================␊ |
72 | * Fake EFI implementation␊ |
73 | */␊ |
74 | ␊ |
75 | /* Identify ourselves as the EFI firmware vendor */␊ |
76 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
77 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
78 | ␊ |
79 | /* Default platform system_id (fix by IntVar) */␊ |
80 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
81 | ␊ |
82 | /* Just a ret instruction */␊ |
83 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
84 | ␊ |
85 | /* movl $0x80000003,%eax; ret */␊ |
86 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
87 | ␊ |
88 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
89 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
90 | Node *gEfiConfigurationTableNode = NULL;␊ |
91 | ␊ |
92 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
93 | {␊ |
94 | ␉EFI_UINTN i = 0;␊ |
95 | ␉␊ |
96 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
97 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
98 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
99 | ␉{␊ |
100 | ␉␉i = gST32->NumberOfTableEntries;␊ |
101 | ␉}␊ |
102 | ␉else␊ |
103 | ␉{␊ |
104 | ␉␉i = gST64->NumberOfTableEntries;␊ |
105 | ␉}␊ |
106 | ␉␊ |
107 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
108 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
109 | ␉␉stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
110 | ␉␊ |
111 | ␉if (pGuid == NULL)␊ |
112 | ␉␉return EFI_INVALID_PARAMETER;␊ |
113 | ␉␊ |
114 | ␉if (table != NULL)␊ |
115 | ␉{␊ |
116 | ␉␉// FIXME␊ |
117 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
118 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
119 | ␉␉␊ |
120 | ␉␉//++gST->NumberOfTableEntries;␊ |
121 | ␉␉␊ |
122 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
123 | ␉␉␊ |
124 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
125 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
126 | ␉␉␊ |
127 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
128 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
129 | ␉␉␊ |
130 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
131 | ␉␉if (alias != NULL)␊ |
132 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
133 | ␉␉␊ |
134 | ␉␉return EFI_SUCCESS;␊ |
135 | ␉}␊ |
136 | ␉return EFI_UNSUPPORTED;␊ |
137 | }␊ |
138 | ␊ |
139 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
140 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
141 | {␊ |
142 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
143 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
144 | }*/␊ |
145 | ␊ |
146 | /*␊ |
147 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
148 | * runtime services table.␊ |
149 | *␊ |
150 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
151 | * also take care to set efiMode = 32.␊ |
152 | */␊ |
153 | void setupEfiTables32(void)␊ |
154 | {␊ |
155 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
156 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
157 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
158 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
159 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
160 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
161 | ␉// and probably will stay that way.␊ |
162 | ␉struct fake_efi_pages␊ |
163 | ␉{␊ |
164 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
165 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
166 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
167 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
168 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
169 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
170 | ␉};␊ |
171 | ␉␊ |
172 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
173 | ␉␊ |
174 | ␉// Zero out all the tables in case fields are added later␊ |
175 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
176 | ␉␊ |
177 | ␉// --------------------------------------------------------------------␊ |
178 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
179 | ␉// functions returning int and simply return for void functions.␊ |
180 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
181 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
182 | ␉␊ |
183 | ␉// --------------------------------------------------------------------␊ |
184 | ␉// System table␊ |
185 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
186 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
187 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
188 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
189 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
190 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
191 | ␉␊ |
192 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
193 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
194 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
195 | ␉␊ |
196 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
197 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
198 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
199 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
200 | ␉efiSystemTable->ConIn = 0;␊ |
201 | ␉␊ |
202 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
203 | ␉efiSystemTable->ConOut = 0;␊ |
204 | ␉␊ |
205 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
206 | ␉efiSystemTable->StdErr = 0;␊ |
207 | ␉␊ |
208 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
209 | ␉␊ |
210 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
211 | ␉// boot process is exited so we can probably do without it.␊ |
212 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
213 | ␉// so I'm guessing they don't use it.␊ |
214 | ␉efiSystemTable->BootServices = 0;␊ |
215 | ␉␊ |
216 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
217 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
218 | ␉␊ |
219 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
220 | ␉// Must be initialized to zero before CRC32, done above.␊ |
221 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
222 | ␉␊ |
223 | ␉// --------------------------------------------------------------------␊ |
224 | ␉// Runtime services␊ |
225 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
226 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
227 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
228 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
229 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
230 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
231 | ␉␊ |
232 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
233 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
234 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
235 | ␉// will call these without checking to see if they are null.␊ |
236 | ␉//␊ |
237 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
238 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
239 | ␉// at least providing some sort of implementation until one can be provided␊ |
240 | ␉// nicely in a kext.␊ |
241 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
242 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
243 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
244 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
245 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
246 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
247 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
248 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
249 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
250 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
251 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
252 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
253 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
254 | ␉␊ |
255 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
256 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
257 | ␉␊ |
258 | ␉// --------------------------------------------------------------------␊ |
259 | ␉// Finish filling in the rest of the boot args that we need.␊ |
260 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
261 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
262 | ␉␊ |
263 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
264 | ␉// things like efiRuntimeServices* and what not.␊ |
265 | ␉//␊ |
266 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
267 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
268 | }␊ |
269 | ␊ |
270 | void setupEfiTables64(void)␊ |
271 | {␊ |
272 | ␉struct fake_efi_pages␊ |
273 | ␉{␊ |
274 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
275 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
276 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
277 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
278 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
279 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
280 | ␉};␊ |
281 | ␉␊ |
282 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
283 | ␉␊ |
284 | ␉// Zero out all the tables in case fields are added later␊ |
285 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
286 | ␉␊ |
287 | ␉// --------------------------------------------------------------------␊ |
288 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
289 | ␉// functions returning int and simply return for void functions.␊ |
290 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
291 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
292 | ␉␊ |
293 | ␉// --------------------------------------------------------------------␊ |
294 | ␉// System table␊ |
295 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
296 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
297 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
298 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
299 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
300 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
301 | ␉␊ |
302 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
303 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
304 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
305 | ␉␊ |
306 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
307 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
308 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
309 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
310 | ␉efiSystemTable->ConIn = 0;␊ |
311 | ␉␊ |
312 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
313 | ␉efiSystemTable->ConOut = 0;␊ |
314 | ␉␊ |
315 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
316 | ␉efiSystemTable->StdErr = 0;␊ |
317 | ␉␊ |
318 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
319 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
320 | ␉// boot process is exited so we can probably do without it.␊ |
321 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
322 | ␉// so I'm guessing they don't use it.␊ |
323 | ␉efiSystemTable->BootServices = 0;␊ |
324 | ␉␊ |
325 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
326 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
327 | ␉␊ |
328 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
329 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
330 | ␉␊ |
331 | ␉// --------------------------------------------------------------------␊ |
332 | ␉// Runtime services␊ |
333 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
334 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
335 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
336 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
337 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
338 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
339 | ␉␊ |
340 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
341 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
342 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
343 | ␉// will call these without checking to see if they are null.␊ |
344 | ␉//␊ |
345 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
346 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
347 | ␉// at least providing some sort of implementation until one can be provided␊ |
348 | ␉// nicely in a kext.␊ |
349 | ␉␊ |
350 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
351 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
352 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
353 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
354 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
355 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
356 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
357 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
358 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
359 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
360 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
361 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
362 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
363 | ␉␊ |
364 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
365 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
366 | ␉␊ |
367 | ␉// --------------------------------------------------------------------␊ |
368 | ␉// Finish filling in the rest of the boot args that we need.␊ |
369 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
370 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
371 | ␉␊ |
372 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
373 | ␉// things like efiRuntimeServices* and what not.␊ |
374 | ␉//␊ |
375 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
376 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
377 | }␊ |
378 | ␊ |
379 | /*␊ |
380 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
381 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
382 | * the tsc_init function will panic very early on in kernel startup, before␊ |
383 | * the console is available.␊ |
384 | */␊ |
385 | ␊ |
386 | /*==========================================================================␊ |
387 | * FSB Frequency detection␊ |
388 | */␊ |
389 | ␊ |
390 | /* These should be const but DT__AddProperty takes char* */␊ |
391 | static const char const TSC_Frequency_prop[] = "TSCFrequency";␊ |
392 | static const char const FSB_Frequency_prop[] = "FSBFrequency";␊ |
393 | static const char const CPU_Frequency_prop[] = "CPUFrequency";␊ |
394 | ␊ |
395 | /*==========================================================================␊ |
396 | * SMBIOS␊ |
397 | */␊ |
398 | ␊ |
399 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
400 | EFI_GUID const␉gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
401 | ␊ |
402 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
403 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
404 | ␊ |
405 | /* '_SM_' in little endian: */␊ |
406 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
407 | ␊ |
408 | #define EFI_ACPI_TABLE_GUID \␊ |
409 | { \␊ |
410 | ␉0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
411 | }␊ |
412 | ␊ |
413 | #define EFI_ACPI_20_TABLE_GUID \␊ |
414 | { \␊ |
415 | ␉0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
416 | }␊ |
417 | ␊ |
418 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
419 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
420 | ␊ |
421 | ␊ |
422 | /*==========================================================================␊ |
423 | * Fake EFI implementation␊ |
424 | */␊ |
425 | ␊ |
426 | /* These should be const but DT__AddProperty takes char* */␊ |
427 | static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
428 | static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
429 | static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
430 | static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
431 | static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
432 | static const char const SYSTEM_ID_PROP[] = "system-id";␊ |
433 | static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
434 | static const char const SYSTEM_TYPE_PROP[] = "system-type";␊ |
435 | static const char const MODEL_PROP[] = "Model";␊ |
436 | static const char const BOARDID_PROP[] = "board-id";␊ |
437 | ␊ |
438 | /*␊ |
439 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
440 | */␊ |
441 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
442 | {␊ |
443 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
444 | ␉EFI_CHAR16*␉ dst = 0;␊ |
445 | ␉size_t␉␉ i = 0;␊ |
446 | ␉␊ |
447 | ␉if (!key || !(*key) || !len || !src) return 0;␊ |
448 | ␉␊ |
449 | ␉*len = strlen(src);␊ |
450 | ␉dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
451 | ␉for (; i < (*len); i++)␉ dst[i] = src[i];␊ |
452 | ␉dst[(*len)] = '\0';␊ |
453 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊ |
454 | ␉return dst;␊ |
455 | }␊ |
456 | ␊ |
457 | /*␊ |
458 | * Get the SystemID from the bios dmi info␊ |
459 | */␊ |
460 | static␉EFI_CHAR8* getSmbiosUUID()␊ |
461 | {␊ |
462 | ␉static EFI_CHAR8␉␉ uuid[UUID_LEN];␊ |
463 | ␉int␉␉␉␉␉␉ i, isZero, isOnes;␊ |
464 | ␉SMBByte␉␉␉␉␉*p;␊ |
465 | ␉␊ |
466 | ␉p = (SMBByte*)Platform.UUID;␊ |
467 | ␉␊ |
468 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++)␊ |
469 | ␉{␊ |
470 | ␉␉if (p[i] != 0x00) isZero = 0;␊ |
471 | ␉␉if (p[i] != 0xff) isOnes = 0;␊ |
472 | ␉}␊ |
473 | ␉␊ |
474 | ␉if (isZero || isOnes) // empty or setable means: no uuid present␊ |
475 | ␉{␊ |
476 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
477 | ␉␉return 0;␊ |
478 | ␉}␊ |
479 | ␉␊ |
480 | ␉memcpy(uuid, p, UUID_LEN);␊ |
481 | ␉return uuid;␊ |
482 | }␊ |
483 | ␊ |
484 | /*␊ |
485 | * return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
486 | * or from the bios if not, or from a fixed value if no bios value is found ␊ |
487 | */␊ |
488 | static EFI_CHAR8* getSystemID()␊ |
489 | {␊ |
490 | ␉// unable to determine UUID for host. Error: 35 fix␊ |
491 | ␉// Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
492 | ␉// belong to smbios config only ...␊ |
493 | ␉const char *sysId = getStringForKey(kSystemID, &bootInfo->chameleonConfig);␊ |
494 | ␉EFI_CHAR8*␉ret = getUUIDFromString(sysId);␊ |
495 | ␉␊ |
496 | ␉if (!sysId || !ret) // try bios dmi info UUID extraction␊ |
497 | ␉{␊ |
498 | ␉␉ret = getSmbiosUUID();␊ |
499 | ␉␉sysId = 0;␊ |
500 | ␉}␊ |
501 | ␉␊ |
502 | ␉if (!ret) // no bios dmi UUID available, set a fixed value for system-id␊ |
503 | ␉␉ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
504 | ␉␊ |
505 | ␉verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
506 | ␉return ret;␊ |
507 | }␊ |
508 | ␊ |
509 | /*␊ |
510 | * Must be called AFTER setup Acpi because we need to take care of correct␊ |
511 | * facp content to reflect in ioregs␊ |
512 | */␊ |
513 | void setupSystemType()␊ |
514 | {␊ |
515 | ␉Node *node = DT__FindNode("/", false);␊ |
516 | ␉if (node == 0) stop("Couldn't get root node");␊ |
517 | ␉// we need to write this property after facp parsing␊ |
518 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
519 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
520 | }␊ |
521 | ␊ |
522 | void setupEfiDeviceTree(void)␊ |
523 | {␊ |
524 | ␉EFI_CHAR8*␉ ret = 0;␊ |
525 | ␉EFI_CHAR16*␉ ret16 = 0;␊ |
526 | ␉size_t␉␉ len = 0;␊ |
527 | ␉Node␉␉*node;␊ |
528 | ␉␊ |
529 | ␉node = DT__FindNode("/", false);␊ |
530 | ␉␊ |
531 | ␉if (node == 0) stop("Couldn't get root node");␊ |
532 | ␉␊ |
533 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
534 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
535 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
536 | ␉node = DT__AddChild(node, "efi");␊ |
537 | ␉␊ |
538 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
539 | ␉{␊ |
540 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊ |
541 | ␉}␊ |
542 | ␉else␊ |
543 | ␉{␊ |
544 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊ |
545 | ␉}␊ |
546 | ␉␊ |
547 | ␉DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
548 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
549 | ␉␊ |
550 | ␉// TODO: Fill in other efi properties if necessary␊ |
551 | ␉␊ |
552 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
553 | ␉// is set up. That is, name and table properties␊ |
554 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
555 | ␉␊ |
556 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
557 | ␉{␊ |
558 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
559 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
560 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
561 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
562 | ␉␉␊ |
563 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
564 | ␉}␊ |
565 | ␉else␊ |
566 | ␉{␊ |
567 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
568 | ␉}␊ |
569 | ␉␊ |
570 | ␉// Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
571 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
572 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
573 | ␉␊ |
574 | ␉// Now fill in the /efi/platform Node␊ |
575 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
576 | ␉␊ |
577 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
578 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
579 | ␉// because the DT_AddProperty function does not copy its args.␊ |
580 | ␉␊ |
581 | ␉if (Platform.CPU.FSBFrequency != 0)␊ |
582 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
583 | ␉␊ |
584 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
585 | ␉if (Platform.CPU.TSCFrequency != 0)␊ |
586 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
587 | ␉␊ |
588 | ␉if (Platform.CPU.CPUFrequency != 0)␊ |
589 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
590 | ␉␊ |
591 | ␉// Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
592 | ␉if ((ret=getSystemID()))␊ |
593 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
594 | ␉␊ |
595 | ␉// Export SystemSerialNumber if present␊ |
596 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
597 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
598 | ␉␊ |
599 | ␉// Export Model if present␊ |
600 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
601 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
602 | ␉␊ |
603 | ␉// Fill /efi/device-properties node.␊ |
604 | ␉setupDeviceProperties(node);␊ |
605 | }␊ |
606 | ␊ |
607 | /*␊ |
608 | * Must be called AFTER getSmbios␊ |
609 | */␊ |
610 | void setupBoardId()␊ |
611 | {␊ |
612 | ␉Node *node;␊ |
613 | ␉node = DT__FindNode("/", false);␊ |
614 | ␉if (node == 0) {␊ |
615 | ␉␉stop("Couldn't get root node");␊ |
616 | ␉}␊ |
617 | ␉const char *boardid = getStringForKey("SMboardproduct", &bootInfo->smbiosConfig);␊ |
618 | ␉if (boardid)␊ |
619 | ␉␉DT__AddProperty(node, BOARDID_PROP, strlen(boardid)+1, (EFI_CHAR16*)boardid);␊ |
620 | }␉␉␊ |
621 | ␊ |
622 | /*␊ |
623 | * Load the smbios.plist override config file if any␊ |
624 | */␊ |
625 | static void setupSmbiosConfigFile(const char *filename)␊ |
626 | {␊ |
627 | ␉char␉␉dirSpecSMBIOS[128] = "";␊ |
628 | ␉const char *override_pathname = NULL;␊ |
629 | ␉int␉␉␉len = 0, err = 0;␊ |
630 | ␉extern void scan_mem();␊ |
631 | ␉␊ |
632 | ␉// Take in account user overriding␊ |
633 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->chameleonConfig) && len > 0)␊ |
634 | ␉{␊ |
635 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
636 | ␉␉sprintf(dirSpecSMBIOS, override_pathname);␊ |
637 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
638 | ␉}␊ |
639 | ␉else␊ |
640 | ␉{␊ |
641 | ␉␉// Check selected volume's Extra.␊ |
642 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
643 | ␉␉if (err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig))␊ |
644 | ␉␉{␊ |
645 | ␉␉␉// Check booter volume/rdbt Extra.␊ |
646 | ␉␉␉sprintf(dirSpecSMBIOS, "bt(0,0)/Extra/%s", filename);␊ |
647 | ␉␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
648 | ␉␉}␊ |
649 | ␉}␊ |
650 | ␉␊ |
651 | ␉if (err)␊ |
652 | ␉{␊ |
653 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
654 | ␉}␊ |
655 | ␉␊ |
656 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options␊ |
657 | ␉// loaded as well, as opposed to when it was in scan_platform(); also load the orig. smbios␊ |
658 | ␉// so that we can access dmi info, without patching the smbios yet.␊ |
659 | ␉scan_mem(); ␊ |
660 | }␊ |
661 | ␊ |
662 | /*␊ |
663 | * Installs all the needed configuration table entries␊ |
664 | */␊ |
665 | static void setupEfiConfigurationTable()␊ |
666 | {␊ |
667 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
668 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
669 | ␉␊ |
670 | ␉setupBoardId(); //need to be called after getSmbios␊ |
671 | ␉␊ |
672 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
673 | ␉setupAcpi();␊ |
674 | ␉␊ |
675 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
676 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
677 | ␉{␊ |
678 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
679 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
680 | ␉}␊ |
681 | ␉else␊ |
682 | ␉{␊ |
683 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
684 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
685 | ␉}␊ |
686 | }␊ |
687 | ␊ |
688 | void saveOriginalSMBIOS(void)␊ |
689 | {␊ |
690 | ␉Node *node;␊ |
691 | ␉SMBEntryPoint *origeps;␊ |
692 | ␉void *tableAddress;␊ |
693 | ␉␊ |
694 | ␉node = DT__FindNode("/efi/platform", false);␊ |
695 | ␉if (!node)␊ |
696 | ␉{␊ |
697 | ␉␉verbose("/efi/platform node not found\n");␊ |
698 | ␉␉return;␊ |
699 | ␉}␊ |
700 | ␉␊ |
701 | ␉origeps = getSmbios(SMBIOS_ORIGINAL);␊ |
702 | ␉if (!origeps)␊ |
703 | ␉{␊ |
704 | ␉␉return;␊ |
705 | ␉}␊ |
706 | ␉␊ |
707 | ␉tableAddress = (void *)AllocateKernelMemory(origeps->dmi.tableLength);␊ |
708 | ␉if (!tableAddress)␊ |
709 | ␉{␊ |
710 | ␉␉return;␊ |
711 | ␉}␊ |
712 | ␉␊ |
713 | ␉memcpy(tableAddress, (void *)origeps->dmi.tableAddress, origeps->dmi.tableLength);␊ |
714 | ␉DT__AddProperty(node, "SMBIOS", origeps->dmi.tableLength, tableAddress);␊ |
715 | }␊ |
716 | ␊ |
717 | /*␊ |
718 | * Entrypoint from boot.c␊ |
719 | */␊ |
720 | void setupFakeEfi(void)␊ |
721 | {␊ |
722 | ␉// Generate efi device strings ␊ |
723 | ␉setup_pci_devs(root_pci_dev);␊ |
724 | ␉␊ |
725 | ␉readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
726 | ␉␊ |
727 | ␉// load smbios.plist file if any␊ |
728 | ␉setupSmbiosConfigFile("smbios.plist");␊ |
729 | ␉␊ |
730 | ␉setupSMBIOSTable();␊ |
731 | ␉␊ |
732 | ␉// Initialize the base table␊ |
733 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
734 | ␉{␊ |
735 | ␉␉setupEfiTables32();␊ |
736 | ␉}␊ |
737 | ␉else␊ |
738 | ␉{␊ |
739 | ␉␉setupEfiTables64();␊ |
740 | ␉}␊ |
741 | ␉␊ |
742 | ␉// Initialize the device tree␊ |
743 | ␉setupEfiDeviceTree();␊ |
744 | ␉␊ |
745 | ␉saveOriginalSMBIOS();␊ |
746 | ␉␊ |
747 | ␉// Add configuration table entries to both the services table and the device tree␊ |
748 | ␉setupEfiConfigurationTable();␊ |
749 | }␊ |
750 |