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_patcher.h"␊ |
16 | #include "device_inject.h"␊ |
17 | #include "convert.h"␊ |
18 | #include "pci.h"␊ |
19 | #include "sl.h"␊ |
20 | ␊ |
21 | extern struct SMBEntryPoint * getSmbios(int which); // now cached␊ |
22 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
23 | ␊ |
24 | /*␊ |
25 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
26 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
27 | * possible but would have to be maintained as a separate patch because it is␊ |
28 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
29 | *␊ |
30 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
31 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
32 | * to the kernel rather than modifying the kernel to handle non-EFI stuff.␉ This␊ |
33 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
34 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
35 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
36 | * filled in appropriately. Modern xnu requires a system table and a runtime␊ |
37 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
38 | * these tables are non-NULL.␉Therefore, any modern xnu kernel will page fault␊ |
39 | * early on in the boot process if the system table pointer is zero.␊ |
40 | *␊ |
41 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
42 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
43 | * it panics the bootstrap process very early on.␊ |
44 | *␊ |
45 | * As of this writing, the current implementation found here is good enough␊ |
46 | * to make the currently available xnu kernel boot without modification on a␊ |
47 | * system with an appropriate processor. With a minor source modification to␊ |
48 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
49 | * processors the kernel can be made to boot on other processors so long as␊ |
50 | * the code can be executed by the processor and the machine contains the␊ |
51 | * necessary hardware.␊ |
52 | */␊ |
53 | ␊ |
54 | /*==========================================================================␊ |
55 | * Utility function to make a device tree string from an EFI_GUID␊ |
56 | */␊ |
57 | ␊ |
58 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
59 | {␊ |
60 | ␉char *string = malloc(37);␊ |
61 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
62 | ␉return string;␊ |
63 | }␊ |
64 | ␊ |
65 | /*==========================================================================␊ |
66 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
67 | */␊ |
68 | ␊ |
69 | static uint64_t ptov64(uint32_t addr)␊ |
70 | {␊ |
71 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
72 | }␊ |
73 | ␊ |
74 | /*==========================================================================␊ |
75 | * Fake EFI implementation␊ |
76 | */␊ |
77 | ␊ |
78 | /* Identify ourselves as the EFI firmware vendor */␊ |
79 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
80 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
81 | ␊ |
82 | /* Default platform system_id (fix by IntVar) */␊ |
83 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
84 | ␊ |
85 | /* Just a ret instruction */␊ |
86 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
87 | ␊ |
88 | /* movl $0x80000003,%eax; ret */␊ |
89 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
90 | ␊ |
91 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
92 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
93 | Node *gEfiConfigurationTableNode = NULL;␊ |
94 | ␊ |
95 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
96 | {␊ |
97 | EFI_UINTN i = 0;␊ |
98 | ␉␊ |
99 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
100 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
101 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
102 | ␉{␊ |
103 | ␉␉i = gST32->NumberOfTableEntries;␊ |
104 | ␉}␊ |
105 | ␉else␊ |
106 | ␉{␊ |
107 | ␉␉i = gST64->NumberOfTableEntries;␊ |
108 | ␉}␊ |
109 | ␉␊ |
110 | // We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
111 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
112 | ␉␉stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
113 | ␉␊ |
114 | ␉if (pGuid == NULL)␊ |
115 | ␉␉return EFI_INVALID_PARAMETER;␊ |
116 | ␉␊ |
117 | ␉if (table != NULL)␊ |
118 | ␉{␊ |
119 | ␉␉// FIXME␊ |
120 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
121 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
122 | ␉␉␊ |
123 | ␉␉//++gST->NumberOfTableEntries;␊ |
124 | ␉␉␊ |
125 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
126 | ␉␉␊ |
127 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
128 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
129 | ␉␉␊ |
130 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
131 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
132 | ␉␉␊ |
133 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
134 | ␉␉if (alias != NULL)␊ |
135 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
136 | ␉␉␊ |
137 | ␉␉return EFI_SUCCESS;␊ |
138 | ␉}␊ |
139 | ␉return EFI_UNSUPPORTED;␊ |
140 | }␊ |
141 | ␊ |
142 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
143 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
144 | {␊ |
145 | efiSystemTable->Hdr.CRC32 = 0;␊ |
146 | efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
147 | }*/␊ |
148 | ␊ |
149 | /*␊ |
150 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
151 | * runtime services table.␊ |
152 | *␊ |
153 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
154 | * also take care to set efiMode = 32.␊ |
155 | */␊ |
156 | ␊ |
157 | void setupEfiTables32(void)␊ |
158 | {␊ |
159 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
160 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
161 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
162 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
163 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
164 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
165 | ␉// and probably will stay that way.␊ |
166 | ␉struct fake_efi_pages␊ |
167 | ␉{␊ |
168 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
169 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
170 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
171 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
172 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
173 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
174 | ␉};␊ |
175 | ␉␊ |
176 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
177 | ␉␊ |
178 | ␉// Zero out all the tables in case fields are added later␊ |
179 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
180 | ␉␊ |
181 | ␉// --------------------------------------------------------------------␊ |
182 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
183 | ␉// functions returning int and simply return for void functions.␊ |
184 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
185 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
186 | ␉␊ |
187 | ␉// --------------------------------------------------------------------␊ |
188 | ␉// System table␊ |
189 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
190 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
191 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
192 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
193 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
194 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
195 | ␉␊ |
196 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
197 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
198 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
199 | ␉␊ |
200 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
201 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
202 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
203 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
204 | ␉efiSystemTable->ConIn = 0;␊ |
205 | ␉␊ |
206 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
207 | ␉efiSystemTable->ConOut = 0;␊ |
208 | ␉␊ |
209 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
210 | ␉efiSystemTable->StdErr = 0;␊ |
211 | ␉␊ |
212 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
213 | ␉␊ |
214 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
215 | ␉// boot process is exited so we can probably do without it.␊ |
216 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
217 | ␉// so I'm guessing they don't use it.␊ |
218 | ␉efiSystemTable->BootServices = 0;␊ |
219 | ␉␊ |
220 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
221 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
222 | ␉␊ |
223 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
224 | ␉// Must be initialized to zero before CRC32, done above.␊ |
225 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
226 | ␉␊ |
227 | ␉// --------------------------------------------------------------------␊ |
228 | ␉// Runtime services␊ |
229 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
230 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
231 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
232 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
233 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
234 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
235 | ␉␊ |
236 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
237 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
238 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
239 | ␉// will call these without checking to see if they are null.␊ |
240 | ␉//␊ |
241 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
242 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
243 | ␉// at least providing some sort of implementation until one can be provided␊ |
244 | ␉// nicely in a kext.␊ |
245 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
246 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
247 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
248 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
249 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
250 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
251 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
252 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
253 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
254 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
255 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
256 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
257 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
258 | ␉␊ |
259 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
260 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
261 | ␉␊ |
262 | ␉// --------------------------------------------------------------------␊ |
263 | ␉// Finish filling in the rest of the boot args that we need.␊ |
264 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
265 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
266 | ␉␊ |
267 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
268 | ␉// things like efiRuntimeServices* and what not.␊ |
269 | ␉//␊ |
270 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
271 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
272 | }␊ |
273 | ␊ |
274 | void setupEfiTables64(void)␊ |
275 | {␊ |
276 | ␉struct fake_efi_pages␊ |
277 | ␉{␊ |
278 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
279 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
280 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
281 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
282 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
283 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
284 | ␉};␊ |
285 | ␉␊ |
286 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
287 | ␉␊ |
288 | ␉// Zero out all the tables in case fields are added later␊ |
289 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
290 | ␉␊ |
291 | ␉// --------------------------------------------------------------------␊ |
292 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
293 | ␉// functions returning int and simply return for void functions.␊ |
294 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
295 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
296 | ␉␊ |
297 | ␉// --------------------------------------------------------------------␊ |
298 | ␉// System table␊ |
299 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
300 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
301 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
302 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
303 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
304 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
305 | ␉␊ |
306 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
307 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
308 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
309 | ␉␊ |
310 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
311 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
312 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
313 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
314 | ␉efiSystemTable->ConIn = 0;␊ |
315 | ␉␊ |
316 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
317 | ␉efiSystemTable->ConOut = 0;␊ |
318 | ␉␊ |
319 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
320 | ␉efiSystemTable->StdErr = 0;␊ |
321 | ␉␊ |
322 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
323 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
324 | ␉// boot process is exited so we can probably do without it.␊ |
325 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
326 | ␉// so I'm guessing they don't use it.␊ |
327 | ␉efiSystemTable->BootServices = 0;␊ |
328 | ␉␊ |
329 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
330 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
331 | ␉␊ |
332 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
333 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
334 | ␉␊ |
335 | ␉// --------------------------------------------------------------------␊ |
336 | ␉// Runtime services␊ |
337 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
338 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
339 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
340 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
341 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
342 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
343 | ␉␊ |
344 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
345 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
346 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
347 | ␉// will call these without checking to see if they are null.␊ |
348 | ␉//␊ |
349 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
350 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
351 | ␉// at least providing some sort of implementation until one can be provided␊ |
352 | ␉// nicely in a kext.␊ |
353 | ␉␊ |
354 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
355 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
356 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
357 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
358 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
359 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
360 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
361 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
362 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
363 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
364 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
365 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
366 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
367 | ␉␊ |
368 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
369 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
370 | ␉␊ |
371 | ␉// --------------------------------------------------------------------␊ |
372 | ␉// Finish filling in the rest of the boot args that we need.␊ |
373 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
374 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
375 | ␉␊ |
376 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
377 | ␉// things like efiRuntimeServices* and what not.␊ |
378 | ␉//␊ |
379 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
380 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
381 | }␊ |
382 | ␊ |
383 | /*␊ |
384 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
385 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
386 | * the tsc_init function will panic very early on in kernel startup, before␊ |
387 | * the console is available.␊ |
388 | */␊ |
389 | ␊ |
390 | /*==========================================================================␊ |
391 | * FSB Frequency detection␊ |
392 | */␊ |
393 | ␊ |
394 | /* These should be const but DT__AddProperty takes char* */␊ |
395 | static const char const TSC_Frequency_prop[] = "TSCFrequency";␊ |
396 | static const char const FSB_Frequency_prop[] = "FSBFrequency";␊ |
397 | static const char const CPU_Frequency_prop[] = "CPUFrequency";␊ |
398 | ␊ |
399 | /*==========================================================================␊ |
400 | * SMBIOS␊ |
401 | */␊ |
402 | ␊ |
403 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
404 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
405 | ␊ |
406 | #define SMBIOS_RANGE_START 0x000F0000␊ |
407 | #define SMBIOS_RANGE_END 0x000FFFFF␊ |
408 | ␊ |
409 | /* '_SM_' in little endian: */␊ |
410 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
411 | ␊ |
412 | #define EFI_ACPI_TABLE_GUID \␊ |
413 | { \␊ |
414 | 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
415 | }␊ |
416 | ␊ |
417 | #define EFI_ACPI_20_TABLE_GUID \␊ |
418 | { \␊ |
419 | 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
420 | }␊ |
421 | ␊ |
422 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
423 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
424 | ␊ |
425 | ␊ |
426 | /*==========================================================================␊ |
427 | * Fake EFI implementation␊ |
428 | */␊ |
429 | ␊ |
430 | /* These should be const but DT__AddProperty takes char* */␊ |
431 | static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
432 | static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
433 | static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
434 | static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
435 | static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
436 | static const char const SYSTEM_ID_PROP[] = "system-id";␊ |
437 | static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
438 | static const char const SYSTEM_TYPE_PROP[] = "system-type";␊ |
439 | static const char const MODEL_PROP[] = "Model";␊ |
440 | ␊ |
441 | ␊ |
442 | /*␊ |
443 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
444 | */␊ |
445 | ␊ |
446 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
447 | {␊ |
448 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
449 | ␉EFI_CHAR16* dst = 0;␊ |
450 | ␉size_t␉␉ i = 0;␊ |
451 | ␉␊ |
452 | ␉if (!key || !(*key) || !len || !src) return 0;␊ |
453 | ␉␊ |
454 | ␉*len = strlen(src);␊ |
455 | ␉dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
456 | ␉for (; i < (*len); i++) dst[i] = src[i];␊ |
457 | ␉dst[(*len)] = '\0';␊ |
458 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊ |
459 | ␉return dst;␊ |
460 | }␊ |
461 | ␊ |
462 | /*␊ |
463 | * Get the SystemID from the bios dmi info␊ |
464 | */␊ |
465 | ␊ |
466 | static␉EFI_CHAR8* getSmbiosUUID()␊ |
467 | {␊ |
468 | ␉static EFI_CHAR8␉␉ uuid[UUID_LEN];␊ |
469 | ␉int␉␉␉␉␉␉ i, isZero, isOnes;␊ |
470 | ␉struct SMBEntryPoint␉*smbios;␊ |
471 | ␉SMBByte␉␉␉␉␉*p;␊ |
472 | ␉␊ |
473 | ␉smbios = getSmbios(SMBIOS_PATCHED); // checks for _SM_ anchor and table header checksum␊ |
474 | ␉if (smbios==NULL) return 0; // getSmbios() return a non null value if smbios is found␊ |
475 | ␉␊ |
476 | ␉p = (SMBByte*) FindFirstDmiTableOfType(1, 0x19); // Type 1: (3.3.2) System Information␊ |
477 | ␉if (p==NULL) return NULL;␊ |
478 | ␉␊ |
479 | ␉verbose("Found SMBIOS System Information Table 1\n");␊ |
480 | ␉p += 8;␊ |
481 | ␉␊ |
482 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++)␊ |
483 | ␉{␊ |
484 | ␉␉if (p[i] != 0x00) isZero = 0;␊ |
485 | ␉␉if (p[i] != 0xff) isOnes = 0;␊ |
486 | ␉}␊ |
487 | ␉␊ |
488 | ␉if (isZero || isOnes) // empty or setable means: no uuid present␊ |
489 | ␉{␊ |
490 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
491 | ␉␉return 0;␊ |
492 | ␉}␊ |
493 | ␉␊ |
494 | ␉memcpy(uuid, p, UUID_LEN);␊ |
495 | ␉return uuid;␊ |
496 | }␊ |
497 | ␊ |
498 | /*␊ |
499 | * return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
500 | * or from the bios if not, or from a fixed value if no bios value is found ␊ |
501 | */␊ |
502 | ␊ |
503 | static EFI_CHAR8* getSystemID()␊ |
504 | {␊ |
505 | ␉// unable to determine UUID for host. Error: 35 fix␊ |
506 | ␉// Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
507 | ␉// belong to smbios config only ...␊ |
508 | ␉const char *sysId = getStringForKey(kSystemIDKey, &bootInfo->bootConfig);␊ |
509 | ␉EFI_CHAR8* ret = getUUIDFromString(sysId);␊ |
510 | ␊ |
511 | ␉if (!sysId || !ret) // try bios dmi info UUID extraction␊ |
512 | ␉{␊ |
513 | ␉␉ret = getSmbiosUUID();␊ |
514 | ␉␉sysId = 0;␊ |
515 | ␉}␊ |
516 | ␉␊ |
517 | ␉if (!ret) // no bios dmi UUID available, set a fixed value for system-id␊ |
518 | ␉␉ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
519 | ␉␊ |
520 | ␉verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
521 | ␉return ret;␊ |
522 | }␊ |
523 | ␊ |
524 | /*␊ |
525 | * Must be called AFTER setup Acpi because we need to take care of correct␊ |
526 | * facp content to reflect in ioregs␊ |
527 | */␊ |
528 | ␊ |
529 | void setupSystemType()␊ |
530 | {␊ |
531 | ␉Node *node = DT__FindNode("/", false);␊ |
532 | ␉if (node == 0) stop("Couldn't get root node");␊ |
533 | ␉// we need to write this property after facp parsing␊ |
534 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
535 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
536 | }␊ |
537 | ␊ |
538 | void setupEfiDeviceTree(void)␊ |
539 | {␊ |
540 | EFI_CHAR8*␉ ret = 0;␊ |
541 | ␉EFI_CHAR16* ret16 = 0;␊ |
542 | ␉size_t␉␉ len = 0;␊ |
543 | ␉Node␉␉*node;␊ |
544 | ␉␊ |
545 | ␉node = DT__FindNode("/", false);␊ |
546 | ␉␊ |
547 | ␉if (node == 0) stop("Couldn't get root node");␊ |
548 | ␉␊ |
549 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
550 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
551 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
552 | ␉node = DT__AddChild(node, "efi");␊ |
553 | ␉␊ |
554 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
555 | ␉{␊ |
556 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊ |
557 | ␉}␊ |
558 | ␉else␊ |
559 | ␉{␊ |
560 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊ |
561 | ␉}␊ |
562 | ␉␊ |
563 | DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
564 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
565 | ␉␊ |
566 | ␉// TODO: Fill in other efi properties if necessary␊ |
567 | ␉␊ |
568 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
569 | ␉// is set up. That is, name and table properties␊ |
570 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
571 | ␉␊ |
572 | if (archCpuType == CPU_TYPE_I386)␊ |
573 | ␉{␊ |
574 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
575 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
576 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
577 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
578 | ␉␉␊ |
579 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
580 | ␉}␊ |
581 | ␉else␊ |
582 | ␉{␊ |
583 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
584 | ␉}␊ |
585 | ␊ |
586 | // Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
587 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
588 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
589 | ␉␊ |
590 | ␉// Now fill in the /efi/platform Node␊ |
591 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
592 | ␉␊ |
593 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
594 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
595 | ␉// because the DT_AddProperty function does not copy its args.␊ |
596 | ␉␊ |
597 | ␉if (Platform.CPU.FSBFrequency != 0)␊ |
598 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
599 | ␉␊ |
600 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
601 | ␉if (Platform.CPU.TSCFrequency != 0)␊ |
602 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
603 | ␉␊ |
604 | ␉if (Platform.CPU.CPUFrequency != 0)␊ |
605 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
606 | ␉␊ |
607 | ␉// Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
608 | ␉if ((ret=getSystemID()))␊ |
609 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
610 | ␊ |
611 | ␉ // Export SystemSerialNumber if present␊ |
612 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
613 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
614 | ␉␊ |
615 | ␉// Export Model if present␊ |
616 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
617 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
618 | ␉␊ |
619 | ␉// Fill /efi/device-properties node.␊ |
620 | ␉setupDeviceProperties(node);␊ |
621 | }␊ |
622 | ␊ |
623 | /*␊ |
624 | * Load the smbios.plist override config file if any␊ |
625 | */␊ |
626 | ␊ |
627 | static void setupSmbiosConfigFile(const char *filename)␊ |
628 | {␊ |
629 | ␉char␉␉dirSpecSMBIOS[128] = "";␊ |
630 | ␉const char *override_pathname = NULL;␊ |
631 | ␉int␉␉␉len = 0, fd = 0;␊ |
632 | ␉extern void scan_mem();␊ |
633 | ␉␊ |
634 | ␉// Take in account user overriding␊ |
635 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->bootConfig))␊ |
636 | ␉{␊ |
637 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
638 | ␉␉sprintf(dirSpecSMBIOS, override_pathname);␊ |
639 | ␉␉fd = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
640 | ␉␉if (fd >= 0) goto success_fd;␊ |
641 | ␉}␊ |
642 | ␉␊ |
643 | ␉// Check rd's root.␊ |
644 | ␉sprintf(dirSpecSMBIOS, "rd(0,0)/%s", filename);␊ |
645 | ␉fd = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
646 | ␉if (fd >= 0) goto success_fd;␊ |
647 | ␉␊ |
648 | ␉// Check booter volume/rdbt for specific OS folders.␊ |
649 | ␉sprintf(dirSpecSMBIOS, "bt(0,0)/Extra/%s/%s", &gMacOSVersion, filename);␊ |
650 | ␉fd = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
651 | ␉if (fd >= 0) goto success_fd;␊ |
652 | ␉␊ |
653 | ␉// Check booter volume/rdbt Extra.␊ |
654 | ␉sprintf(dirSpecSMBIOS, "bt(0,0)/Extra/%s", filename);␊ |
655 | ␉fd = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
656 | ␉if (fd >= 0) goto success_fd;␊ |
657 | ␉␊ |
658 | ␉if (loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig) == -1)␊ |
659 | ␉{␊ |
660 | ␉␉verbose("No SMBIOS replacement provided.\n");␊ |
661 | ␉}␊ |
662 | ␉␊ |
663 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options loaded as well,␊ |
664 | ␉// as opposed to when it was in scan_platform(); also load the orig. smbios so that we can access dmi info without␊ |
665 | ␉// patching the smbios yet␊ |
666 | success_fd:␊ |
667 | ␉getSmbios(SMBIOS_ORIGINAL);␊ |
668 | ␉scan_mem(); ␊ |
669 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␉// process smbios asap␊ |
670 | }␊ |
671 | ␊ |
672 | /*␊ |
673 | * Installs all the needed configuration table entries␊ |
674 | */␊ |
675 | ␊ |
676 | static void setupEfiConfigurationTable()␊ |
677 | {␊ |
678 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
679 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
680 | ␉␊ |
681 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
682 | ␉setupAcpi();␊ |
683 | ␉␊ |
684 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
685 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
686 | ␉{␊ |
687 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
688 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
689 | ␉}␊ |
690 | ␉else␊ |
691 | ␉{␊ |
692 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
693 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
694 | ␉}␊ |
695 | }␊ |
696 | ␊ |
697 | /*␊ |
698 | * Entrypoint from boot.c␊ |
699 | */␊ |
700 | ␊ |
701 | void setupFakeEfi(void)␊ |
702 | {␊ |
703 | ␉// Generate efi device strings ␊ |
704 | ␉setup_pci_devs(root_pci_dev);␊ |
705 | ␊ |
706 | ␉// load smbios.plist file if any␊ |
707 | ␉setupSmbiosConfigFile("SMBIOS.plist");␊ |
708 | ␉␊ |
709 | ␉// Initialize the base table␊ |
710 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
711 | ␉{␊ |
712 | ␉␉setupEfiTables32();␊ |
713 | ␉}␊ |
714 | ␉else␊ |
715 | ␉{␊ |
716 | ␉␉setupEfiTables64();␊ |
717 | ␉}␊ |
718 | ␉␊ |
719 | ␉// Initialize the device tree␊ |
720 | ␉setupEfiDeviceTree();␊ |
721 | ␉␊ |
722 | ␉// Add configuration table entries to both the services table and the device tree␊ |
723 | ␉setupEfiConfigurationTable();␊ |
724 | }␊ |
725 | ␊ |
726 | |