1 | ␊ |
2 | /*␊ |
3 | * Copyright 2007 David F. Elliott.␉ All rights reserved.␊ |
4 | */␊ |
5 | #include "saio_types.h"␊ |
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 | // ErmaC␊ |
73 | static inline uint64_t getCPUTick(void)␊ |
74 | {␊ |
75 | ␉uint32_t lowest;␊ |
76 | ␉uint32_t highest;␊ |
77 | ␉__asm__ volatile ("rdtsc" : "=a" (lowest), "=d" (highest));␊ |
78 | ␉return (uint64_t) highest << 32 | lowest;␊ |
79 | }␊ |
80 | ␊ |
81 | /*==========================================================================␊ |
82 | * Fake EFI implementation␊ |
83 | */␊ |
84 | ␊ |
85 | /* Identify ourselves as the EFI firmware vendor */␊ |
86 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','3', 0};␊ |
87 | // Bungo␊ |
88 | //static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
89 | static EFI_UINT32 const FIRMWARE_REVISION = 0x0001000a; // got from real MBP6,1␊ |
90 | // Bungo␊ |
91 | /* Default platform system_id (fix by IntVar)␊ |
92 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
93 | */␊ |
94 | ␊ |
95 | /* Just a ret instruction */␊ |
96 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
97 | ␊ |
98 | /* movl $0x80000003,%eax; ret */␊ |
99 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_32[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
100 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_64[] = {0x48, 0xb8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc3};␊ |
101 | ␊ |
102 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
103 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
104 | Node *gEfiConfigurationTableNode = NULL;␊ |
105 | ␊ |
106 | // ==========================================================================␊ |
107 | ␊ |
108 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
109 | {␊ |
110 | ␉EFI_UINTN i = 0;␊ |
111 | ␊ |
112 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
113 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
114 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
115 | ␉{␊ |
116 | ␉␉i = gST32->NumberOfTableEntries;␊ |
117 | ␉}␊ |
118 | ␉else␊ |
119 | ␉{␊ |
120 | ␉␉i = gST64->NumberOfTableEntries;␊ |
121 | ␉}␊ |
122 | ␊ |
123 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
124 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
125 | ␉{␊ |
126 | ␉␉stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊ |
127 | ␉}␊ |
128 | ␊ |
129 | ␉if (pGuid == NULL)␊ |
130 | ␉{␊ |
131 | ␉␉return EFI_INVALID_PARAMETER;␊ |
132 | ␉}␊ |
133 | ␊ |
134 | ␉if (table != NULL)␊ |
135 | ␉{␊ |
136 | ␉␉// FIXME␊ |
137 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
138 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
139 | ␊ |
140 | ␉␉//++gST->NumberOfTableEntries;␊ |
141 | ␊ |
142 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
143 | ␊ |
144 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
145 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊ |
146 | ␊ |
147 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
148 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊ |
149 | ␊ |
150 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
151 | ␉␉if (alias != NULL)␊ |
152 | ␉␉{␊ |
153 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊ |
154 | ␉␉}␊ |
155 | ␊ |
156 | ␉␉return EFI_SUCCESS;␊ |
157 | ␉}␊ |
158 | ␉return EFI_UNSUPPORTED;␊ |
159 | }␊ |
160 | ␊ |
161 | // ==========================================================================␊ |
162 | ␊ |
163 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
164 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
165 | {␊ |
166 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
167 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
168 | }*/␊ |
169 | ␊ |
170 | /*␊ |
171 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
172 | * runtime services table.␊ |
173 | *␊ |
174 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
175 | * also take care to set efiMode = 32.␊ |
176 | */␊ |
177 | void setupEfiTables32(void)␊ |
178 | {␊ |
179 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
180 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
181 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
182 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
183 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
184 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
185 | ␉// and probably will stay that way.␊ |
186 | ␉struct fake_efi_pages␊ |
187 | ␉{␊ |
188 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
189 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
190 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
191 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
192 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
193 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32)/sizeof(uint8_t)];␊ |
194 | ␉};␊ |
195 | ␉␊ |
196 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
197 | ␉␊ |
198 | ␉// Zero out all the tables in case fields are added later␊ |
199 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
200 | ␉␊ |
201 | ␉// --------------------------------------------------------------------␊ |
202 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
203 | ␉// functions returning int and simply return for void functions.␊ |
204 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
205 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_32, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32));␊ |
206 | ␉␊ |
207 | ␉// --------------------------------------------------------------------␊ |
208 | ␉// System table␊ |
209 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
210 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
211 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
212 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
213 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
214 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
215 | ␉␊ |
216 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
217 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
218 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
219 | ␉␊ |
220 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
221 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
222 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
223 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
224 | ␉efiSystemTable->ConIn = 0;␊ |
225 | ␊ |
226 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
227 | ␉efiSystemTable->ConOut = 0;␊ |
228 | ␊ |
229 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
230 | ␉efiSystemTable->StdErr = 0;␊ |
231 | ␊ |
232 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
233 | ␊ |
234 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
235 | ␉// boot process is exited so we can probably do without it.␊ |
236 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
237 | ␉// so I'm guessing they don't use it.␊ |
238 | ␉efiSystemTable->BootServices = 0;␊ |
239 | ␊ |
240 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
241 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
242 | ␊ |
243 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
244 | ␉// Must be initialized to zero before CRC32, done above.␊ |
245 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
246 | ␊ |
247 | ␉// --------------------------------------------------------------------␊ |
248 | ␉// Runtime services␊ |
249 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
250 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
251 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
252 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
253 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
254 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
255 | ␊ |
256 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
257 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
258 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
259 | ␉// will call these without checking to see if they are null.␊ |
260 | ␉//␊ |
261 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
262 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
263 | ␉// at least providing some sort of implementation until one can be provided␊ |
264 | ␉// nicely in a kext.␊ |
265 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
266 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
267 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
268 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
269 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
270 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
271 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
272 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
273 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
274 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
275 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
276 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
277 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
278 | ␊ |
279 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
280 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
281 | ␊ |
282 | ␉// --------------------------------------------------------------------␊ |
283 | ␉// Finish filling in the rest of the boot args that we need.␊ |
284 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
285 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
286 | ␊ |
287 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
288 | ␉// things like efiRuntimeServices* and what not.␊ |
289 | ␉//␊ |
290 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
291 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
292 | }␊ |
293 | ␊ |
294 | void setupEfiTables64(void)␊ |
295 | {␊ |
296 | ␉struct fake_efi_pages␊ |
297 | ␉{␊ |
298 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
299 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
300 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
301 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
302 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
303 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64)/sizeof(uint8_t)];␊ |
304 | ␉};␊ |
305 | ␊ |
306 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
307 | ␊ |
308 | ␉// Zero out all the tables in case fields are added later␊ |
309 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
310 | ␊ |
311 | ␉// --------------------------------------------------------------------␊ |
312 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
313 | ␉// functions returning int and simply return for void functions.␊ |
314 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
315 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_64, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64));␊ |
316 | ␊ |
317 | ␉// --------------------------------------------------------------------␊ |
318 | ␉// System table␊ |
319 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
320 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
321 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
322 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
323 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
324 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
325 | ␊ |
326 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
327 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
328 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
329 | ␊ |
330 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
331 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
332 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
333 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
334 | ␉efiSystemTable->ConIn = 0;␊ |
335 | ␊ |
336 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
337 | ␉efiSystemTable->ConOut = 0;␊ |
338 | ␊ |
339 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
340 | ␉efiSystemTable->StdErr = 0;␊ |
341 | ␊ |
342 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
343 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
344 | ␉// boot process is exited so we can probably do without it.␊ |
345 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
346 | ␉// so I'm guessing they don't use it.␊ |
347 | ␉efiSystemTable->BootServices = 0;␊ |
348 | ␊ |
349 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
350 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
351 | ␊ |
352 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
353 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
354 | ␊ |
355 | ␉// --------------------------------------------------------------------␊ |
356 | ␉// Runtime services␊ |
357 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
358 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
359 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
360 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
361 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
362 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
363 | ␊ |
364 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
365 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
366 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
367 | ␉// will call these without checking to see if they are null.␊ |
368 | ␉//␊ |
369 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
370 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
371 | ␉// at least providing some sort of implementation until one can be provided␊ |
372 | ␉// nicely in a kext.␊ |
373 | ␊ |
374 | ␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊ |
375 | ␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊ |
376 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
377 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
378 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
379 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
380 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
381 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
382 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
383 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
384 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
385 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
386 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
387 | ␊ |
388 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
389 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
390 | ␊ |
391 | ␉// --------------------------------------------------------------------␊ |
392 | ␉// Finish filling in the rest of the boot args that we need.␊ |
393 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
394 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
395 | ␊ |
396 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
397 | ␉// things like efiRuntimeServices* and what not.␊ |
398 | ␉//␊ |
399 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
400 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
401 | }␊ |
402 | ␊ |
403 | /*␊ |
404 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
405 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
406 | * the tsc_init function will panic very early on in kernel startup, before␊ |
407 | * the console is available.␊ |
408 | */␊ |
409 | ␊ |
410 | /*==========================================================================␊ |
411 | * FSB Frequency detection␊ |
412 | */␊ |
413 | ␊ |
414 | /* These should be const but DT__AddProperty takes char* */␊ |
415 | static const char TSC_Frequency_prop[] = "TSCFrequency";␊ |
416 | static const char FSB_Frequency_prop[] = "FSBFrequency";␊ |
417 | static const char CPU_Frequency_prop[] = "CPUFrequency";␊ |
418 | ␊ |
419 | /*==========================================================================␊ |
420 | * SMBIOS␊ |
421 | */␊ |
422 | ␊ |
423 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
424 | EFI_GUID const␉gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
425 | ␊ |
426 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
427 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
428 | ␊ |
429 | /* '_SM_' in little endian: */␊ |
430 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
431 | ␊ |
432 | #define EFI_ACPI_TABLE_GUID \␊ |
433 | { \␊ |
434 | ␉0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
435 | }␊ |
436 | ␊ |
437 | #define EFI_ACPI_20_TABLE_GUID \␊ |
438 | { \␊ |
439 | ␉0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
440 | }␊ |
441 | ␊ |
442 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
443 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
444 | ␊ |
445 | ␊ |
446 | /*==========================================================================␊ |
447 | * Fake EFI implementation␊ |
448 | */␊ |
449 | ␊ |
450 | /* These should be const but DT__AddProperty takes char* */␊ |
451 | static const char FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
452 | static const char FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
453 | static const char FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
454 | //static const char FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
455 | static const char FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
456 | static const char EFI_MODE_PROP[] = "efi-mode"; //Bungo␊ |
457 | static const char SYSTEM_ID_PROP[] = "system-id";␊ |
458 | static const char SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
459 | static const char SYSTEM_TYPE_PROP[] = "system-type";␊ |
460 | static const char MODEL_PROP[] = "Model";␊ |
461 | static const char BOARDID_PROP[] = "board-id";␊ |
462 | static const char DEV_PATH_SUP[] = "DevicePathsSupported";␊ |
463 | static EFI_UINT32 DevPathSup = 1;␊ |
464 | static EFI_UINT32 MachineSig = 0; //Bungo␊ |
465 | /*␊ |
466 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
467 | */␊ |
468 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
469 | {␊ |
470 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
471 | ␉EFI_CHAR16*␉ dst = 0;␊ |
472 | ␉size_t␉␉ i = 0;␊ |
473 | ␊ |
474 | ␉if (!key || !(*key) || !len || !src)␊ |
475 | ␉{␊ |
476 | ␉␉return 0;␊ |
477 | ␉}␊ |
478 | ␉␊ |
479 | ␉*len = strlen(src);␊ |
480 | ␉dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
481 | ␉for (; i < (*len); i++)␊ |
482 | ␉{␊ |
483 | ␉␉dst[i] = src[i];␊ |
484 | ␉}␊ |
485 | ␉dst[(*len)] = '\0';␊ |
486 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize including zero terminated CHAR16␊ |
487 | ␉return dst;␊ |
488 | }␊ |
489 | ␊ |
490 | // Bungo␊ |
491 | /*␊ |
492 | * Get the SystemID from the bios dmi info␊ |
493 | ␊ |
494 | static␉EFI_CHAR8* getSmbiosUUID()␊ |
495 | {␊ |
496 | ␉static EFI_CHAR8␉␉ uuid[UUID_LEN];␊ |
497 | ␉int␉␉␉␉␉␉ i, isZero, isOnes;␊ |
498 | ␉SMBByte␉␉␉␉␉*p;␊ |
499 | ␊ |
500 | ␉p = (SMBByte*)Platform.UUID;␊ |
501 | ␊ |
502 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++)␊ |
503 | ␉{␊ |
504 | ␉␉if (p[i] != 0x00)␊ |
505 | ␉␉{␊ |
506 | ␉␉␉isZero = 0;␊ |
507 | ␉␉}␊ |
508 | ␊ |
509 | ␉␉if (p[i] != 0xff)␊ |
510 | ␉␉{␊ |
511 | ␉␉␉isOnes = 0;␊ |
512 | ␉␉}␊ |
513 | ␉}␊ |
514 | ␊ |
515 | ␉if (isZero || isOnes) // empty or setable means: no uuid present␊ |
516 | ␉{␊ |
517 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
518 | ␉␉return 0;␊ |
519 | ␉}␊ |
520 | ␊ |
521 | ␉memcpy(uuid, p, UUID_LEN);␊ |
522 | ␉return uuid;␊ |
523 | }␊ |
524 | ␊ |
525 | ␊ |
526 | // return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
527 | // or from the bios if not, or from a fixed value if no bios value is found ␊ |
528 | ␊ |
529 | static EFI_CHAR8* getSystemID()␊ |
530 | {␊ |
531 | ␉// unable to determine UUID for host. Error: 35 fix␊ |
532 | ␉// Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
533 | ␉// belong to smbios config only ...␊ |
534 | ␉const char *sysId = getStringForKey(kSystemID, &bootInfo->chameleonConfig);␊ |
535 | ␉EFI_CHAR8*␉ret = getUUIDFromString(sysId);␊ |
536 | ␊ |
537 | ␉if (!sysId || !ret) // try bios dmi info UUID extraction␊ |
538 | ␉{␊ |
539 | ␉␉ret = getSmbiosUUID();␊ |
540 | ␉␉sysId = 0;␊ |
541 | ␉}␊ |
542 | ␊ |
543 | ␉if (!ret)␊ |
544 | ␉{␊ |
545 | ␉␉// no bios dmi UUID available, set a fixed value for system-id␊ |
546 | ␉␉ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
547 | ␉}␊ |
548 | ␉verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
549 | ␉return ret;␊ |
550 | }␊ |
551 | */␊ |
552 | ␊ |
553 | /*␊ |
554 | * Must be called AFTER setup Acpi because we need to take care of correct␊ |
555 | * facp content to reflect in ioregs␊ |
556 | */␊ |
557 | void setupSystemType()␊ |
558 | {␊ |
559 | ␉Node *node = DT__FindNode("/", false);␊ |
560 | ␉if (node == 0)␊ |
561 | ␉{␊ |
562 | ␉␉stop("Couldn't get root node");␊ |
563 | ␉}␊ |
564 | ␉// we need to write this property after facp parsing␊ |
565 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
566 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
567 | }␊ |
568 | ␊ |
569 | void setupEfiDeviceTree(void)␊ |
570 | {␊ |
571 | ␉// EFI_CHAR8*␉ ret = 0; Bungo: not used␊ |
572 | ␉EFI_CHAR16*␉ ret16 = 0;␊ |
573 | ␉size_t␉␉ len = 0;␊ |
574 | ␉Node␉␉*node;␊ |
575 | ␊ |
576 | ␉node = DT__FindNode("/", false);␊ |
577 | ␊ |
578 | ␉if (node == 0)␊ |
579 | ␉{␊ |
580 | ␉␉stop("Couldn't get root node");␊ |
581 | ␉}␊ |
582 | ␊ |
583 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
584 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
585 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
586 | ␉node = DT__AddChild(node, "efi");␊ |
587 | /* Bungo␊ |
588 | ␉if (archCpuType == CPU_TYPE_I386) {␊ |
589 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊ |
590 | ␉} else { */␊ |
591 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char *)FIRMWARE_ABI_64_PROP_VALUE);␊ |
592 | //␉}␊ |
593 | ␊ |
594 | ␉DT__AddProperty(node, EFI_MODE_PROP, sizeof(EFI_UINT8), (EFI_UINT8 *)&bootArgs->efiMode);␊ |
595 | ␊ |
596 | ␉DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32 *)&FIRMWARE_REVISION);␊ |
597 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16 *)FIRMWARE_VENDOR);␊ |
598 | ␊ |
599 | ␉// TODO: Fill in other efi properties if necessary␊ |
600 | ␊ |
601 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
602 | ␉// is set up. That is, name and table properties␊ |
603 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
604 | ␊ |
605 | ␉if (archCpuType == CPU_TYPE_I386) {␊ |
606 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
607 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
608 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
609 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
610 | ␊ |
611 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
612 | ␉} else {␊ |
613 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
614 | ␉}␊ |
615 | ␊ |
616 | ␉// Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
617 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
618 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
619 | ␊ |
620 | ␉// New node: /efi/kernel-compatibility␊ |
621 | ␉Node *efiKernelComNode = DT__AddChild(node, "kernel-compatibility");␊ |
622 | ␉len = 1;␊ |
623 | ␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(uint32_t), (EFI_UINT32 *)&len);␊ |
624 | ␊ |
625 | ␉// Now fill in the /efi/platform Node␊ |
626 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
627 | ␊ |
628 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
629 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
630 | ␉// because the DT_AddProperty function does not copy its args.␊ |
631 | ␊ |
632 | ␉if (Platform.CPU.FSBFrequency != 0) {␊ |
633 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
634 | ␉}␊ |
635 | ␊ |
636 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
637 | ␉if (Platform.CPU.TSCFrequency != 0) {␊ |
638 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
639 | ␉}␊ |
640 | ␊ |
641 | ␉if (Platform.CPU.CPUFrequency != 0) {␊ |
642 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
643 | ␉}␊ |
644 | ␊ |
645 | ␉DT__AddProperty(efiPlatformNode,DEV_PATH_SUP, sizeof(EFI_UINT32), &DevPathSup);␊ |
646 | ␊ |
647 | ␉// Bungo␊ |
648 | ␉/* Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
649 | ␉if ((ret=getSystemID())) {␊ |
650 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
651 | ␉}␊ |
652 | ␉*/␊ |
653 | ␊ |
654 | ␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *)Platform.UUID);␊ |
655 | ␊ |
656 | ␉// Export SystemSerialNumber if present␊ |
657 | ␉if ((ret16=getSmbiosChar16("SMserial", &len))) {␊ |
658 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
659 | ␉}␊ |
660 | ␊ |
661 | ␉// Export Model if present␊ |
662 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len))) {␊ |
663 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
664 | ␉}␊ |
665 | ␊ |
666 | ␉// Fill /efi/device-properties node.␊ |
667 | ␉setupDeviceProperties(node);␊ |
668 | }␊ |
669 | ␊ |
670 | /*␊ |
671 | * Must be called AFTER getSmbios␊ |
672 | */␊ |
673 | void setupBoardId()␊ |
674 | {␊ |
675 | ␉Node *node;␊ |
676 | ␉node = DT__FindNode("/", false);␊ |
677 | ␉if (node == 0)␊ |
678 | ␉{␊ |
679 | ␉␉stop("Couldn't get root node");␊ |
680 | ␉}␊ |
681 | ␉const char *boardid = getStringForKey("SMboardproduct", &bootInfo->smbiosConfig);␊ |
682 | ␉if (boardid)␊ |
683 | ␉{␊ |
684 | ␉␉DT__AddProperty(node, BOARDID_PROP, strlen(boardid)+1, (EFI_CHAR16*)boardid);␊ |
685 | ␉}␊ |
686 | }␊ |
687 | ␊ |
688 | /*␊ |
689 | * Populate the chosen node␊ |
690 | */␊ |
691 | ␊ |
692 | void setupChosenNode()␊ |
693 | {␊ |
694 | ␉Node *chosenNode;␊ |
695 | ␉chosenNode = DT__FindNode("/chosen", false);␊ |
696 | ␉if (chosenNode == 0)␊ |
697 | ␉{␊ |
698 | ␉␉stop("Couldn't get chosen node");␊ |
699 | ␉}␊ |
700 | ␊ |
701 | ␉int length = strlen(gBootUUIDString);␊ |
702 | ␉if (length)␊ |
703 | ␉{␊ |
704 | ␉␉DT__AddProperty(chosenNode, "boot-uuid", length + 1, gBootUUIDString);␊ |
705 | ␉}␊ |
706 | ␊ |
707 | ␉length = strlen(bootArgs->CommandLine);␊ |
708 | ␉DT__AddProperty(chosenNode, "boot-args", length + 1, bootArgs->CommandLine);␊ |
709 | ␊ |
710 | ␉length = strlen(bootInfo->bootFile);␊ |
711 | ␉DT__AddProperty(chosenNode, "boot-file", length + 1, bootInfo->bootFile);␊ |
712 | //␉DT__AddProperty(chosenNode, "boot-device-path", bootDPsize, gBootDP);␊ |
713 | ␊ |
714 | //␉DT__AddProperty(chosenNode, "boot-file-path", bootFPsize, gBootFP);␊ |
715 | ␊ |
716 | //␉DT__AddProperty(chosenNode, "boot-kernelcache-adler32", sizeof(adler32), adler32);␊ |
717 | ␊ |
718 | ␉DT__AddProperty(chosenNode, "machine-signature", sizeof(EFI_UINT32), (EFI_UINT32 *)&MachineSig);␊ |
719 | ␊ |
720 | ␊ |
721 | ␉if(YOSEMITE)␊ |
722 | ␉{␊ |
723 | ␉␉//␊ |
724 | ␉␉// Pike R. Alpha - 12 October 2014␊ |
725 | ␉␉//␊ |
726 | ␉␉UInt8 index = 0;␊ |
727 | ␉␉EFI_UINT16 PMTimerValue = 0;␊ |
728 | ␉␉EFI_UINT32 randomValue, tempValue, cpuTick;␊ |
729 | ␉␉EFI_UINT32 ecx, esi, edi = 0;␊ |
730 | ␉␉EFI_UINT32 rcx, rdx, rsi, rdi;␊ |
731 | ␊ |
732 | ␉␉randomValue = tempValue = ecx = esi = edi = 0;␉␉␉␉␉// xor␉␉%ecx,␉%ecx␊ |
733 | ␉␉rcx = rdx = rsi = rdi = cpuTick = 0;␊ |
734 | ␊ |
735 | ␉␉// LEAF_1 - Feature Information (Function 01h).␊ |
736 | ␉␉if (Platform.CPU.CPUID[CPUID_1][2] & 0x40000000)␉␉␉␉// Checking ecx:bit-30␊ |
737 | ␉␉{␊ |
738 | ␉␉␉//␊ |
739 | ␉␉␉// i5/i7 Ivy Bridge and Haswell processors with RDRAND support.␊ |
740 | ␉␉␉//␊ |
741 | ␉␉␉EFI_UINT32 seedBuffer[16] = {0};␊ |
742 | ␉␉␉//␊ |
743 | ␉␉␉// Main loop to get 16 qwords (four bytes each).␊ |
744 | ␉␉␉//␊ |
745 | ␉␉␉for (index = 0; index < 16; index++)␉␉␉␉␉// 0x17e12:␊ |
746 | ␉␉␉{␊ |
747 | ␉␉␉␉randomValue = computeRand();␉␉␉␉␉// callq␉0x18e20␊ |
748 | ␉␉␉␉cpuTick = getCPUTick();␉␉␉␉␉␉// callq␉0x121a7␊ |
749 | ␉␉␉␉randomValue = (randomValue ^ cpuTick);␉␉␉␉// xor␉␉%rdi,␉%rax␊ |
750 | ␉␉␉␉seedBuffer[index] = randomValue;␉␉␉␉// mov␉␉%rax,(%r15,%rsi,8)␊ |
751 | ␉␉␉}␉␉␉␉␉␉␉␉␉// jb␉␉0x17e12␊ |
752 | ␊ |
753 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT32*) &seedBuffer);␊ |
754 | ␉␉}␊ |
755 | ␉␉else␊ |
756 | ␉␉{␊ |
757 | ␉␉␉//␊ |
758 | ␉␉␉// All other processors without RDRAND support.␊ |
759 | ␉␉␉//␊ |
760 | ␉␉␉EFI_UINT8 seedBuffer[64] = {0};␊ |
761 | ␉␉␉//␊ |
762 | ␉␉␉// Main loop to get the 64 bytes.␊ |
763 | ␉␉␉//␊ |
764 | ␉␉␉do␉␉␉␉␉␉␉␉␉// 0x17e55:␊ |
765 | ␉␉␉{␊ |
766 | ␉␉␉␉PMTimerValue = inw(0x408);␉␉␉␉␉// in␉␉(%dx),␉%ax␊ |
767 | ␉␉␉␉esi = PMTimerValue;␉␉␉␉␉␉// movzwl␉%ax,␉%esi␊ |
768 | ␊ |
769 | ␉␉␉␉if (esi < ecx)␉␉␉␉␉␉␉// cmp␉␉%ecx,␉%esi␊ |
770 | ␉␉␉␉{␊ |
771 | ␉␉␉␉␉continue;␉␉␉␉␉␉// jb␉␉0x17e55␉␉(retry)␊ |
772 | ␉␉␉␉}␊ |
773 | ␊ |
774 | ␉␉␉␉cpuTick = getCPUTick();␉␉␉␉␉␉// callq␉0x121a7␊ |
775 | ␉␉␉␉rcx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
776 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
777 | ␉␉␉␉rdx = (cpuTick >> 10);␉␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
778 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
779 | ␉␉␉␉rdi = rsi;␉␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
780 | ␉␉␉␉rdi = (rdi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
781 | ␉␉␉␉rdi = (rdi ^ rcx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
782 | ␉␉␉␉rdi = (rdi ^ rdx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
783 | ␊ |
784 | ␉␉␉␉seedBuffer[index] = (rdi & 0xff);␉␉␉␉// mov␉␉%dil,␉(%r15,%r12,1)␊ |
785 | ␊ |
786 | ␉␉␉␉edi = (edi & 0x2f);␉␉␉␉␉␉// and␉␉$0x2f,␉%edi␊ |
787 | ␉␉␉␉edi = (edi + esi);␉␉␉␉␉␉// add␉␉%esi,␉%edi␊ |
788 | ␉␉␉␉index++;␉␉␉␉␉␉␉// inc␉␉r12␊ |
789 | ␉␉␉␉ecx = (edi & 0xffff);␉␉␉␉␉␉// movzwl␉%di,␉%ecx␊ |
790 | ␊ |
791 | ␉␉␉} while (index < 64);␉␉␉␉␉␉␉// cmp␉␉%r14d,␉%r12d␊ |
792 | ␉␉␉// jne␉␉0x17e55␉␉(next)␊ |
793 | ␊ |
794 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT8*) &seedBuffer);␊ |
795 | ␊ |
796 | ␉␉}␊ |
797 | ␉}␊ |
798 | }␊ |
799 | ␊ |
800 | /*␊ |
801 | * Load the smbios.plist override config file if any␊ |
802 | */␊ |
803 | static void setupSmbiosConfigFile(const char *filename)␊ |
804 | {␊ |
805 | ␉char␉␉dirSpecSMBIOS[128];␊ |
806 | ␉const char␉*override_pathname = NULL;␊ |
807 | ␉int␉␉len = 0, err = 0;␊ |
808 | ␉extern void scan_mem();␊ |
809 | ␊ |
810 | ␉// Take in account user overriding␊ |
811 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->chameleonConfig) && len > 0)␊ |
812 | ␉{␊ |
813 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
814 | ␉␉sprintf(dirSpecSMBIOS, override_pathname);␊ |
815 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
816 | ␉}␊ |
817 | ␉else␊ |
818 | ␉{␊ |
819 | ␉␉// Check selected volume's Extra.␊ |
820 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
821 | ␉␉if ( (err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig)) )␊ |
822 | ␉␉{␊ |
823 | ␉␉␉// Check booter volume/rdbt Extra.␊ |
824 | ␉␉␉sprintf(dirSpecSMBIOS, "bt(0,0)/Extra/%s", filename);␊ |
825 | ␉␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
826 | ␉␉}␊ |
827 | ␉}␊ |
828 | ␊ |
829 | ␉if (err)␊ |
830 | ␉{␊ |
831 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
832 | ␉}␊ |
833 | ␊ |
834 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options␊ |
835 | ␉// loaded as well, as opposed to when it was in scan_platform(); also load the orig. smbios␊ |
836 | ␉// so that we can access dmi info, without patching the smbios yet.␊ |
837 | ␉scan_mem(); ␊ |
838 | }␊ |
839 | ␊ |
840 | /*␊ |
841 | * Installs all the needed configuration table entries␊ |
842 | */␊ |
843 | static void setupEfiConfigurationTable()␊ |
844 | {␊ |
845 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
846 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
847 | ␊ |
848 | ␉setupBoardId(); //need to be called after getSmbios␊ |
849 | ␊ |
850 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
851 | ␉setupAcpi();␊ |
852 | ␊ |
853 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
854 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
855 | ␉{␊ |
856 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
857 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
858 | ␉}␊ |
859 | ␉else␊ |
860 | ␉{␊ |
861 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
862 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
863 | ␉}␊ |
864 | ␊ |
865 | ␉// Setup the chosen node␊ |
866 | ␉setupChosenNode();␊ |
867 | }␊ |
868 | ␊ |
869 | void saveOriginalSMBIOS(void)␊ |
870 | {␊ |
871 | ␉Node *node;␊ |
872 | ␉SMBEntryPoint *origeps;␊ |
873 | ␉void *tableAddress;␊ |
874 | ␊ |
875 | ␉node = DT__FindNode("/efi/platform", false);␊ |
876 | ␉if (!node)␊ |
877 | ␉{␊ |
878 | ␉␉verbose("/efi/platform node not found\n");␊ |
879 | ␉␉return;␊ |
880 | ␉}␊ |
881 | ␊ |
882 | ␉origeps = getSmbios(SMBIOS_ORIGINAL);␊ |
883 | ␉if (!origeps)␊ |
884 | ␉{␊ |
885 | ␉␉return;␊ |
886 | ␉}␊ |
887 | ␊ |
888 | ␉tableAddress = (void *)AllocateKernelMemory(origeps->dmi.tableLength);␊ |
889 | ␉if (!tableAddress)␊ |
890 | ␉{␊ |
891 | ␉␉return;␊ |
892 | ␉}␊ |
893 | ␊ |
894 | ␉memcpy(tableAddress, (void *)origeps->dmi.tableAddress, origeps->dmi.tableLength);␊ |
895 | ␉DT__AddProperty(node, "SMBIOS", origeps->dmi.tableLength, tableAddress);␊ |
896 | }␊ |
897 | ␊ |
898 | /*␊ |
899 | * Entrypoint from boot.c␊ |
900 | */␊ |
901 | void setupFakeEfi(void)␊ |
902 | {␊ |
903 | ␉// Generate efi device strings ␊ |
904 | ␉setup_pci_devs(root_pci_dev);␊ |
905 | ␊ |
906 | ␉readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
907 | ␊ |
908 | ␉// load smbios.plist file if any␊ |
909 | ␉setupSmbiosConfigFile("smbios.plist");␊ |
910 | ␊ |
911 | ␉setupSMBIOSTable();␊ |
912 | ␊ |
913 | ␉// Initialize the base table␊ |
914 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
915 | ␉{␊ |
916 | ␉␉setupEfiTables32();␊ |
917 | ␉}␊ |
918 | ␉else␊ |
919 | ␉{␊ |
920 | ␉␉setupEfiTables64();␊ |
921 | ␉}␊ |
922 | ␊ |
923 | ␉// Initialize the device tree␊ |
924 | ␉setupEfiDeviceTree();␊ |
925 | ␊ |
926 | ␉saveOriginalSMBIOS();␊ |
927 | ␊ |
928 | ␉// Add configuration table entries to both the services table and the device tree␊ |
929 | ␉setupEfiConfigurationTable();␊ |
930 | }␊ |
931 | |