Root/
Source at commit 1018 created 13 years 1 month ago. By cosmo1t, smbios_getters (added a DBG for validating the index in order to make sure we were mapped to spd.c's slot platform.h -- fixed a type on a comment spd.c moved the check && Platform.DMI.DIMM[i] assignment into the if check for spd validity | |
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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 "smbios_patcher.h"␊ |
15 | #include "device_inject.h"␊ |
16 | #include "convert.h"␊ |
17 | #include "pci.h"␊ |
18 | #include "sl.h"␊ |
19 | #include "modules.h"␊ |
20 | ␊ |
21 | #ifdef static␊ |
22 | #undef static␊ |
23 | #endif␊ |
24 | ␊ |
25 | extern struct SMBEntryPoint * getSmbios(int which); // now cached␊ |
26 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
27 | ␊ |
28 | /*␊ |
29 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
30 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
31 | * possible but would have to be maintained as a separate patch because it is␊ |
32 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
33 | *␊ |
34 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
35 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
36 | * to the kernel rather than modifying the kernel to handle non-EFI stuff.␉ This␊ |
37 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
38 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
39 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
40 | * filled in appropriately.␉ Modern xnu requires a system table and a runtime␊ |
41 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
42 | * these tables are non-NULL.␉Therefore, any modern xnu kernel will page fault␊ |
43 | * early on in the boot process if the system table pointer is zero.␊ |
44 | *␊ |
45 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
46 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
47 | * it panics the bootstrap process very early on.␊ |
48 | *␊ |
49 | * As of this writing, the current implementation found here is good enough␊ |
50 | * to make the currently available xnu kernel boot without modification on a␊ |
51 | * system with an appropriate processor. With a minor source modification to␊ |
52 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
53 | * processors the kernel can be made to boot on other processors so long as␊ |
54 | * the code can be executed by the processor and the machine contains the␊ |
55 | * necessary hardware.␊ |
56 | */␊ |
57 | ␊ |
58 | /*==========================================================================␊ |
59 | * Utility function to make a device tree string from an EFI_GUID␊ |
60 | */␊ |
61 | ␊ |
62 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
63 | {␊ |
64 | ␉char *string = malloc(37);␊ |
65 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
66 | ␉return string;␊ |
67 | }␊ |
68 | ␊ |
69 | /*==========================================================================␊ |
70 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
71 | */␊ |
72 | ␊ |
73 | static uint64_t ptov64(uint32_t addr)␊ |
74 | {␊ |
75 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
76 | }␊ |
77 | ␊ |
78 | /*==========================================================================␊ |
79 | * Fake EFI implementation␊ |
80 | */␊ |
81 | ␊ |
82 | /* Identify ourselves as the EFI firmware vendor */␊ |
83 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
84 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
85 | ␊ |
86 | /* Default platform system_id (fix by IntVar) */␊ |
87 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
88 | ␊ |
89 | /* Just a ret instruction */␊ |
90 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
91 | ␊ |
92 | /* movl $0x80000003,%eax; ret */␊ |
93 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
94 | ␊ |
95 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
96 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
97 | Node *gEfiConfigurationTableNode = NULL;␊ |
98 | ␊ |
99 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
100 | {␊ |
101 | ␉EFI_UINTN i = 0;␊ |
102 | ␉␊ |
103 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
104 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
105 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
106 | ␉{␊ |
107 | ␉␉i = gST32->NumberOfTableEntries;␊ |
108 | ␉}␊ |
109 | ␉else␊ |
110 | ␉{␊ |
111 | ␉␉i = gST64->NumberOfTableEntries;␊ |
112 | ␉}␊ |
113 | ␉␊ |
114 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
115 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
116 | ␉␉stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
117 | ␉␊ |
118 | ␉if (pGuid == NULL)␊ |
119 | ␉␉return EFI_INVALID_PARAMETER;␊ |
120 | ␉␊ |
121 | ␉if (table != NULL)␊ |
122 | ␉{␊ |
123 | ␉␉// FIXME␊ |
124 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
125 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
126 | ␉␉␊ |
127 | ␉␉//++gST->NumberOfTableEntries;␊ |
128 | ␉␉␊ |
129 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
130 | ␉␉␊ |
131 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
132 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
133 | ␉␉␊ |
134 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
135 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
136 | ␉␉␊ |
137 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
138 | ␉␉if (alias != NULL)␊ |
139 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
140 | ␉␉␊ |
141 | ␉␉return EFI_SUCCESS;␊ |
142 | ␉}␊ |
143 | ␉return EFI_UNSUPPORTED;␊ |
144 | }␊ |
145 | ␊ |
146 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
147 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
148 | {␊ |
149 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
150 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
151 | }*/␊ |
152 | ␊ |
153 | /*␊ |
154 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
155 | * runtime services table.␊ |
156 | *␊ |
157 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
158 | * also take care to set efiMode = 32.␊ |
159 | */␊ |
160 | ␊ |
161 | void setupEfiTables32(void)␊ |
162 | {␊ |
163 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
164 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
165 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
166 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
167 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
168 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
169 | ␉// and probably will stay that way.␊ |
170 | ␉struct fake_efi_pages␊ |
171 | ␉{␊ |
172 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
173 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
174 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
175 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
176 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
177 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
178 | ␉};␊ |
179 | ␉␊ |
180 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
181 | ␉␊ |
182 | ␉// Zero out all the tables in case fields are added later␊ |
183 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
184 | ␉␊ |
185 | ␉// --------------------------------------------------------------------␊ |
186 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
187 | ␉// functions returning int and simply return for void functions.␊ |
188 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
189 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
190 | ␉␊ |
191 | ␉// --------------------------------------------------------------------␊ |
192 | ␉// System table␊ |
193 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
194 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
195 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
196 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
197 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
198 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
199 | ␉␊ |
200 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
201 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
202 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
203 | ␉␊ |
204 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
205 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
206 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
207 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
208 | ␉efiSystemTable->ConIn = 0;␊ |
209 | ␉␊ |
210 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
211 | ␉efiSystemTable->ConOut = 0;␊ |
212 | ␉␊ |
213 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
214 | ␉efiSystemTable->StdErr = 0;␊ |
215 | ␉␊ |
216 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
217 | ␉␊ |
218 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
219 | ␉// boot process is exited so we can probably do without it.␊ |
220 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
221 | ␉// so I'm guessing they don't use it.␊ |
222 | ␉efiSystemTable->BootServices = 0;␊ |
223 | ␉␊ |
224 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
225 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
226 | ␉␊ |
227 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
228 | ␉// Must be initialized to zero before CRC32, done above.␊ |
229 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
230 | ␉␊ |
231 | ␉// --------------------------------------------------------------------␊ |
232 | ␉// Runtime services␊ |
233 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
234 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
235 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
236 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
237 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
238 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
239 | ␉␊ |
240 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
241 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
242 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
243 | ␉// will call these without checking to see if they are null.␊ |
244 | ␉//␊ |
245 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
246 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
247 | ␉// at least providing some sort of implementation until one can be provided␊ |
248 | ␉// nicely in a kext.␊ |
249 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
250 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
251 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
252 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
253 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
254 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
255 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
256 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
257 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
258 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
259 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
260 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
261 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
262 | ␉␊ |
263 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
264 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
265 | ␉␊ |
266 | ␉// --------------------------------------------------------------------␊ |
267 | ␉// Finish filling in the rest of the boot args that we need.␊ |
268 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
269 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
270 | ␉␊ |
271 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
272 | ␉// things like efiRuntimeServices* and what not.␊ |
273 | ␉//␊ |
274 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
275 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
276 | }␊ |
277 | ␊ |
278 | void setupEfiTables64(void)␊ |
279 | {␊ |
280 | ␉struct fake_efi_pages␊ |
281 | ␉{␊ |
282 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
283 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
284 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
285 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
286 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
287 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
288 | ␉};␊ |
289 | ␉␊ |
290 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
291 | ␉␊ |
292 | ␉// Zero out all the tables in case fields are added later␊ |
293 | ␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
294 | ␉␊ |
295 | ␉// --------------------------------------------------------------------␊ |
296 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
297 | ␉// functions returning int and simply return for void functions.␊ |
298 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
299 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊ |
300 | ␉␊ |
301 | ␉// --------------------------------------------------------------------␊ |
302 | ␉// System table␊ |
303 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
304 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
305 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
306 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
307 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
308 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
309 | ␉␊ |
310 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
311 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
312 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
313 | ␉␊ |
314 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
315 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
316 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
317 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
318 | ␉efiSystemTable->ConIn = 0;␊ |
319 | ␉␊ |
320 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
321 | ␉efiSystemTable->ConOut = 0;␊ |
322 | ␉␊ |
323 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
324 | ␉efiSystemTable->StdErr = 0;␊ |
325 | ␉␊ |
326 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
327 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
328 | ␉// boot process is exited so we can probably do without it.␊ |
329 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
330 | ␉// so I'm guessing they don't use it.␊ |
331 | ␉efiSystemTable->BootServices = 0;␊ |
332 | ␉␊ |
333 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
334 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
335 | ␉␊ |
336 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
337 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
338 | ␉␊ |
339 | ␉// --------------------------------------------------------------------␊ |
340 | ␉// Runtime services␊ |
341 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
342 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
343 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
344 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
345 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
346 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
347 | ␉␊ |
348 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
349 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
350 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
351 | ␉// will call these without checking to see if they are null.␊ |
352 | ␉//␊ |
353 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
354 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
355 | ␉// at least providing some sort of implementation until one can be provided␊ |
356 | ␉// nicely in a kext.␊ |
357 | ␉␊ |
358 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
359 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
360 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
361 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
362 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
363 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
364 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
365 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
366 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
367 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
368 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
369 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
370 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
371 | ␉␊ |
372 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
373 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
374 | ␉␊ |
375 | ␉// --------------------------------------------------------------------␊ |
376 | ␉// Finish filling in the rest of the boot args that we need.␊ |
377 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
378 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
379 | ␉␊ |
380 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
381 | ␉// things like efiRuntimeServices* and what not.␊ |
382 | ␉//␊ |
383 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
384 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
385 | }␊ |
386 | ␊ |
387 | /*␊ |
388 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
389 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
390 | * the tsc_init function will panic very early on in kernel startup, before␊ |
391 | * the console is available.␊ |
392 | */␊ |
393 | ␊ |
394 | /*==========================================================================␊ |
395 | * FSB Frequency detection␊ |
396 | */␊ |
397 | ␊ |
398 | /* These should be const but DT__AddProperty takes char* */␊ |
399 | static const char const TSC_Frequency_prop[] = "TSCFrequency";␊ |
400 | static const char const FSB_Frequency_prop[] = "FSBFrequency";␊ |
401 | static const char const CPU_Frequency_prop[] = "CPUFrequency";␊ |
402 | ␊ |
403 | /*==========================================================================␊ |
404 | * SMBIOS␊ |
405 | */␊ |
406 | ␊ |
407 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
408 | EFI_GUID const␉gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
409 | ␊ |
410 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
411 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
412 | ␊ |
413 | /* '_SM_' in little endian: */␊ |
414 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
415 | ␊ |
416 | #define EFI_ACPI_TABLE_GUID \␊ |
417 | { \␊ |
418 | ␉0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
419 | }␊ |
420 | ␊ |
421 | #define EFI_ACPI_20_TABLE_GUID \␊ |
422 | { \␊ |
423 | ␉0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
424 | }␊ |
425 | ␊ |
426 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
427 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
428 | ␊ |
429 | ␊ |
430 | /*==========================================================================␊ |
431 | * Fake EFI implementation␊ |
432 | */␊ |
433 | ␊ |
434 | /* These should be const but DT__AddProperty takes char* */␊ |
435 | static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
436 | static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
437 | static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
438 | static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
439 | static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
440 | static const char const SYSTEM_ID_PROP[] = "system-id";␊ |
441 | static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
442 | static const char const SYSTEM_TYPE_PROP[] = "system-type";␊ |
443 | static const char const MODEL_PROP[] = "Model";␊ |
444 | ␊ |
445 | ␊ |
446 | /*␊ |
447 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
448 | */␊ |
449 | ␊ |
450 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
451 | {␊ |
452 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
453 | ␉EFI_CHAR16*␉ dst = 0;␊ |
454 | ␉size_t␉␉ i = 0;␊ |
455 | ␉␊ |
456 | ␉if (!key || !(*key) || !len || !src) return 0;␊ |
457 | ␉␊ |
458 | ␉*len = strlen(src);␊ |
459 | ␉dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
460 | ␉for (; i < (*len); i++)␉ dst[i] = src[i];␊ |
461 | ␉dst[(*len)] = '\0';␊ |
462 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊ |
463 | ␉return dst;␊ |
464 | }␊ |
465 | ␊ |
466 | /*␊ |
467 | * Get the SystemID from the bios dmi info␊ |
468 | */␊ |
469 | static EFI_CHAR8␉␉ uuid[UUID_LEN];␊ |
470 | static␉EFI_CHAR8* getSmbiosUUID()␊ |
471 | {␊ |
472 | ␉int␉␉␉␉␉␉ i, isZero, isOnes;␊ |
473 | ␉struct SMBEntryPoint␉*smbios;␊ |
474 | ␉SMBByte␉*p;␊ |
475 | ␉smbios = getSmbios(SMBIOS_PATCHED); // checks for _SM_ anchor and table header checksum␊ |
476 | ␉if (smbios==NULL) return 0; // getSmbios() return a non null value if smbios is found␊ |
477 | ␉␊ |
478 | ␉p = (SMBByte*) FindFirstDmiTableOfType(1, 0x19); // Type 1: (3.3.2) System Information␊ |
479 | ␉if (p==NULL) return NULL;␊ |
480 | ␉p += 8;␊ |
481 | ␉verbose("Found SMBIOS System Information Table 1\n");␊ |
482 | ␉␊ |
483 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++)␊ |
484 | ␉{␊ |
485 | ␉␉if (p[i] != 0x00) isZero = 0;␊ |
486 | ␉␉if (p[i] != 0xff) isOnes = 0;␊ |
487 | ␉}␊ |
488 | ␉␊ |
489 | ␉if (isZero || isOnes) // empty or setable means: no uuid present␊ |
490 | ␉{␊ |
491 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
492 | ␉␉return 0;␊ |
493 | ␉}␊ |
494 | ␉␊ |
495 | ␉memcpy(uuid, p, UUID_LEN);␊ |
496 | ␉return uuid;␊ |
497 | }␊ |
498 | ␊ |
499 | /*␊ |
500 | * return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
501 | * or from the bios if not, or from a fixed value if no bios value is found ␊ |
502 | */␊ |
503 | ␊ |
504 | static EFI_CHAR8* getSystemID()␊ |
505 | {␊ |
506 | ␉// unable to determine UUID for host. Error: 35 fix␊ |
507 | ␉// Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
508 | ␉// belong to smbios config only ...␊ |
509 | ␉const char *sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊ |
510 | ␉EFI_CHAR8*␉ret = getUUIDFromString(sysId);␊ |
511 | ␊ |
512 | ␉if (!sysId || !ret) // try bios dmi info UUID extraction␊ |
513 | ␉{␊ |
514 | ␉␉ret = getSmbiosUUID();␊ |
515 | ␉␉sysId = 0;␊ |
516 | ␉}␊ |
517 | ␉␊ |
518 | ␉if (!ret) // no bios dmi UUID available, set a fixed value for system-id␊ |
519 | ␉␉ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
520 | #ifndef OPTION_ROM␊ |
521 | ␉verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
522 | #endif␊ |
523 | ␉return ret;␊ |
524 | }␊ |
525 | ␊ |
526 | /*␊ |
527 | * Must be called AFTER setup Acpi because we need to take care of correct␊ |
528 | * facp content to reflect in ioregs␊ |
529 | */␊ |
530 | ␊ |
531 | void setupSystemType()␊ |
532 | {␊ |
533 | ␉Node *node = DT__FindNode("/", false);␊ |
534 | ␉if (node == 0) stop("Couldn't get root node");␊ |
535 | ␉// we need to write this property after facp parsing␊ |
536 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
537 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform->Type), &Platform->Type);␊ |
538 | }␊ |
539 | ␊ |
540 | void setupEfiDeviceTree(void)␊ |
541 | {␊ |
542 | ␉EFI_CHAR8*␉ ret = 0;␊ |
543 | ␉EFI_CHAR16*␉ ret16 = 0;␊ |
544 | ␉size_t␉␉ len = 0;␊ |
545 | ␉Node␉␉*node;␊ |
546 | ␉␊ |
547 | ␉node = DT__FindNode("/", false);␊ |
548 | ␉␊ |
549 | ␉if (node == 0) stop("Couldn't get root node");␊ |
550 | ␉␊ |
551 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
552 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
553 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
554 | ␉node = DT__AddChild(node, "efi");␊ |
555 | ␉␊ |
556 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
557 | ␉{␊ |
558 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊ |
559 | ␉}␊ |
560 | ␉else␊ |
561 | ␉{␊ |
562 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊ |
563 | ␉}␊ |
564 | ␉␊ |
565 | ␉DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
566 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
567 | ␉␊ |
568 | ␉// TODO: Fill in other efi properties if necessary␊ |
569 | ␉␊ |
570 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
571 | ␉// is set up. That is, name and table properties␊ |
572 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
573 | ␉␊ |
574 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
575 | ␉{␊ |
576 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
577 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
578 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
579 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
580 | ␉␉␊ |
581 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
582 | ␉}␊ |
583 | ␉else␊ |
584 | ␉{␊ |
585 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
586 | ␉}␊ |
587 | ␊ |
588 | ␉// Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
589 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
590 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
591 | ␉␊ |
592 | ␉// Now fill in the /efi/platform Node␊ |
593 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
594 | ␉␊ |
595 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
596 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
597 | ␉// because the DT_AddProperty function does not copy its args.␊ |
598 | ␉␊ |
599 | ␉if (Platform->CPU.FSBFrequency != 0)␊ |
600 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform->CPU.FSBFrequency);␊ |
601 | ␉␊ |
602 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
603 | ␉if (Platform->CPU.TSCFrequency != 0)␊ |
604 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform->CPU.TSCFrequency);␊ |
605 | ␉␊ |
606 | ␉if (Platform->CPU.CPUFrequency != 0)␊ |
607 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform->CPU.CPUFrequency);␊ |
608 | ␉␊ |
609 | ␉// Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
610 | ␉if ((ret=getSystemID()))␊ |
611 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
612 | ␊ |
613 | ␉ // Export SystemSerialNumber if present␊ |
614 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
615 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
616 | ␉␊ |
617 | ␉// Export Model if present␊ |
618 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
619 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
620 | ␉␊ |
621 | ␉// Fill /efi/device-properties node.␊ |
622 | ␉setupDeviceProperties(node);␊ |
623 | }␊ |
624 | ␊ |
625 | /*␊ |
626 | * Load the smbios.plist override config file if any␊ |
627 | */␊ |
628 | ␊ |
629 | static void setupSmbiosConfigFile(const char *filename)␊ |
630 | {␊ |
631 | ␉char␉␉dirSpecSMBIOS[128] = "";␊ |
632 | ␉const char *override_pathname = NULL;␊ |
633 | ␉int␉␉␉len = 0, err = 0;␊ |
634 | ␉extern void scan_mem();␊ |
635 | ␉␊ |
636 | ␉// Take in account user overriding␊ |
637 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->bootConfig) && len > 0)␊ |
638 | ␉{␊ |
639 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
640 | ␉␉sprintf(dirSpecSMBIOS, override_pathname);␊ |
641 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
642 | ␉}␊ |
643 | ␉else␊ |
644 | ␉{␊ |
645 | ␉␉// Check selected volume's Extra.␊ |
646 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
647 | ␉␉if (err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig))␊ |
648 | ␉␉{␊ |
649 | ␉␉␉// Check booter volume/rdbt Extra.␊ |
650 | ␉␉␉sprintf(dirSpecSMBIOS, "bt(0,0)/Extra/%s", filename);␊ |
651 | ␉␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
652 | ␉␉}␊ |
653 | ␉}␊ |
654 | ␊ |
655 | ␉if (err)␊ |
656 | ␉{␊ |
657 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
658 | ␉}␊ |
659 | ␉␊ |
660 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options loaded as well,␊ |
661 | ␉// as opposed to when it was in scan_platform(); also load the orig. smbios so that we can access dmi info without␊ |
662 | ␉// patching the smbios yet␊ |
663 | ␉scan_mem(); ␊ |
664 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␉// process smbios asap␊ |
665 | }␊ |
666 | ␊ |
667 | /*␊ |
668 | * Installs all the needed configuration table entries␊ |
669 | */␊ |
670 | ␊ |
671 | static void setupEfiConfigurationTable()␊ |
672 | {␊ |
673 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
674 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
675 | ␉␊ |
676 | ␉␊ |
677 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
678 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
679 | ␉{␊ |
680 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
681 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
682 | ␉}␊ |
683 | ␉else␊ |
684 | ␉{␊ |
685 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
686 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
687 | ␉}␊ |
688 | }␊ |
689 | ␊ |
690 | /*␊ |
691 | * Entrypoint from boot.c␊ |
692 | */␊ |
693 | ␊ |
694 | void setupFakeEfi(void)␊ |
695 | {␊ |
696 | ␉// Generate efi device strings ␊ |
697 | ␉setup_pci_devs(root_pci_dev);␊ |
698 | ␊ |
699 | ␉// load smbios.plist file if any␊ |
700 | ␉setupSmbiosConfigFile("SMBIOS.plist");␊ |
701 | ␉␊ |
702 | ␉// Initialize the base table␊ |
703 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
704 | ␉{␊ |
705 | ␉␉setupEfiTables32();␊ |
706 | ␉}␊ |
707 | ␉else␊ |
708 | ␉{␊ |
709 | ␉␉setupEfiTables64();␊ |
710 | ␉}␊ |
711 | ␉␊ |
712 | ␉// Initialize the device tree␊ |
713 | ␉setupEfiDeviceTree();␊ |
714 | ␉␊ |
715 | ␉getSmbios(SMBIOS_ORIGINAL);␊ |
716 | ␉getSmbiosProductName();␊ |
717 | ␊ |
718 | ␉␊ |
719 | ␉execute_hook("setupEfiConfigurationTable", NULL, NULL, NULL, NULL);␊ |
720 | ␉␊ |
721 | ␉// Add configuration table entries to both the services table and the device tree␊ |
722 | ␉setupEfiConfigurationTable();␊ |
723 | }␊ |
724 | ␊ |
725 |