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 | #ifndef DEBUG_EFI␊ |
22 | ␉#define DEBUG_EFI 0␊ |
23 | #endif␊ |
24 | ␊ |
25 | #if DEBUG_EFI␊ |
26 | ␉#define DBG(x...)␉printf(x)␊ |
27 | #else␊ |
28 | ␉#define DBG(x...)␊ |
29 | #endif␊ |
30 | ␊ |
31 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
32 | ␊ |
33 | /*␊ |
34 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
35 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
36 | * possible but would have to be maintained as a separate patch because it is␊ |
37 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
38 | *␊ |
39 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
40 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
41 | * to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
42 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
43 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
44 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
45 | * filled in appropriately.␉Modern xnu requires a system table and a runtime␊ |
46 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
47 | * these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
48 | * early on in the boot process if the system table pointer is zero.␊ |
49 | *␊ |
50 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
51 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
52 | * it panics the bootstrap process very early on.␊ |
53 | *␊ |
54 | * As of this writing, the current implementation found here is good enough␊ |
55 | * to make the currently available xnu kernel boot without modification on a␊ |
56 | * system with an appropriate processor. With a minor source modification to␊ |
57 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
58 | * processors the kernel can be made to boot on other processors so long as␊ |
59 | * the code can be executed by the processor and the machine contains the␊ |
60 | * necessary hardware.␊ |
61 | */␊ |
62 | ␊ |
63 | /*==========================================================================␊ |
64 | * Utility function to make a device tree string from an EFI_GUID␊ |
65 | */␊ |
66 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
67 | {␊ |
68 | ␉char *string = malloc(37);␊ |
69 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
70 | ␉return string;␊ |
71 | }␊ |
72 | ␊ |
73 | /*==========================================================================␊ |
74 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
75 | */␊ |
76 | static uint64_t ptov64(uint32_t addr)␊ |
77 | {␊ |
78 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
79 | }␊ |
80 | ␊ |
81 | // ==========================================================================␊ |
82 | ␊ |
83 | EFI_UINT32 getCPUTick(void)␊ |
84 | {␊ |
85 | ␉uint32_t out;␊ |
86 | ␉__asm__ volatile (␊ |
87 | ␉␉"rdtsc\n"␊ |
88 | ␉␉"shl $32,%%edx\n"␊ |
89 | ␉␉"or %%edx,%%eax\n"␊ |
90 | ␉␉: "=a" (out)␊ |
91 | ␉␉:␊ |
92 | ␉␉: "%edx"␊ |
93 | ␉);␊ |
94 | ␉return out;␊ |
95 | }␊ |
96 | ␊ |
97 | /*==========================================================================␊ |
98 | * Fake EFI implementation␊ |
99 | */␊ |
100 | ␊ |
101 | /* Identify ourselves as the EFI firmware vendor */␊ |
102 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'E','n','o','c','h', 0};␊ |
103 | ␊ |
104 | static EFI_UINT32 const FIRMWARE_REVISION = 0x0001000a; // got from real MBP6,1␊ |
105 | ␊ |
106 | /* Default platform system_id (fix by IntVar)␊ |
107 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
108 | */␊ |
109 | ␊ |
110 | /* Just a ret instruction */␊ |
111 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
112 | ␊ |
113 | /* movl $0x80000003,%eax; ret */␊ |
114 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_32[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
115 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_64[] = {0x48, 0xb8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc3};␊ |
116 | ␊ |
117 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
118 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
119 | Node *gEfiConfigurationTableNode = NULL;␊ |
120 | ␊ |
121 | // ==========================================================================␊ |
122 | ␊ |
123 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
124 | {␊ |
125 | ␉EFI_UINTN i = 0;␊ |
126 | ␊ |
127 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
128 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
129 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
130 | ␉{␊ |
131 | ␉␉i = gST32->NumberOfTableEntries;␊ |
132 | ␉}␊ |
133 | ␉else␊ |
134 | ␉{␊ |
135 | ␉␉i = gST64->NumberOfTableEntries;␊ |
136 | ␉}␊ |
137 | ␊ |
138 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
139 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
140 | ␉{␊ |
141 | ␉␉stop("Fake EFI [ERROR]: Ran out of space for configuration tables [%d]. Increase the reserved size in the code.\n", i);␊ |
142 | ␉}␊ |
143 | ␊ |
144 | ␉if (pGuid == NULL)␊ |
145 | ␉{␊ |
146 | ␉␉return EFI_INVALID_PARAMETER;␊ |
147 | ␉}␊ |
148 | ␊ |
149 | ␉if (table != NULL)␊ |
150 | ␉{␊ |
151 | ␉␉// FIXME␊ |
152 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
153 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
154 | ␊ |
155 | ␉␉//++gST->NumberOfTableEntries;␊ |
156 | ␊ |
157 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
158 | ␊ |
159 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
160 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void *)pGuid);␊ |
161 | ␊ |
162 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
163 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void *) * 2, table);␊ |
164 | ␊ |
165 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
166 | ␉␉if (alias != NULL)␊ |
167 | ␉␉{␊ |
168 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char *)alias);␊ |
169 | ␉␉}␊ |
170 | ␊ |
171 | ␉␉return EFI_SUCCESS;␊ |
172 | ␉}␊ |
173 | ␉return EFI_UNSUPPORTED;␊ |
174 | }␊ |
175 | ␊ |
176 | // ==========================================================================␊ |
177 | ␊ |
178 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
179 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
180 | {␊ |
181 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
182 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
183 | }*/␊ |
184 | ␊ |
185 | /*␊ |
186 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
187 | * runtime services table.␊ |
188 | *␊ |
189 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
190 | * also take care to set efiMode = 32.␊ |
191 | */␊ |
192 | void setupEfiTables32(void)␊ |
193 | {␊ |
194 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
195 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
196 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
197 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
198 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
199 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
200 | ␉// and probably will stay that way.␊ |
201 | ␉struct fake_efi_pages␊ |
202 | ␉{␊ |
203 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
204 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
205 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
206 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
207 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
208 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32)/sizeof(uint8_t)];␊ |
209 | ␉};␊ |
210 | ␊ |
211 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
212 | ␊ |
213 | ␉// Zero out all the tables in case fields are added later␊ |
214 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
215 | ␉␊ |
216 | ␉// --------------------------------------------------------------------␊ |
217 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
218 | ␉// functions returning int and simply return for void functions.␊ |
219 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
220 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_32, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32));␊ |
221 | ␉␊ |
222 | ␉// --------------------------------------------------------------------␊ |
223 | ␉// System table␊ |
224 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
225 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
226 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
227 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
228 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
229 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
230 | ␉␊ |
231 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
232 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
233 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
234 | ␉␊ |
235 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
236 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
237 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
238 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
239 | ␉efiSystemTable->ConIn = 0;␊ |
240 | ␊ |
241 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
242 | ␉efiSystemTable->ConOut = 0;␊ |
243 | ␊ |
244 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
245 | ␉efiSystemTable->StdErr = 0;␊ |
246 | ␊ |
247 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
248 | ␊ |
249 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
250 | ␉// boot process is exited so we can probably do without it.␊ |
251 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
252 | ␉// so I'm guessing they don't use it.␊ |
253 | ␉efiSystemTable->BootServices = 0;␊ |
254 | ␊ |
255 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
256 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
257 | ␊ |
258 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
259 | ␉// Must be initialized to zero before CRC32, done above.␊ |
260 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
261 | ␊ |
262 | ␉// --------------------------------------------------------------------␊ |
263 | ␉// Runtime services␊ |
264 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
265 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
266 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
267 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
268 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
269 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
270 | ␊ |
271 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
272 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
273 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
274 | ␉// will call these without checking to see if they are null.␊ |
275 | ␉//␊ |
276 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
277 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
278 | ␉// at least providing some sort of implementation until one can be provided␊ |
279 | ␉// nicely in a kext.␊ |
280 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
281 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
282 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
283 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
284 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
285 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
286 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
287 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
288 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
289 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
290 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
291 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
292 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
293 | ␊ |
294 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
295 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
296 | ␊ |
297 | ␉// --------------------------------------------------------------------␊ |
298 | ␉// Finish filling in the rest of the boot args that we need.␊ |
299 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
300 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
301 | ␊ |
302 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
303 | ␉// things like efiRuntimeServices* and what not.␊ |
304 | ␉//␊ |
305 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
306 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
307 | }␊ |
308 | ␊ |
309 | void setupEfiTables64(void)␊ |
310 | {␊ |
311 | ␉struct fake_efi_pages␊ |
312 | ␉{␊ |
313 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
314 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
315 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
316 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
317 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
318 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64)/sizeof(uint8_t)];␊ |
319 | ␉};␊ |
320 | ␊ |
321 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
322 | ␊ |
323 | ␉// Zero out all the tables in case fields are added later␊ |
324 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
325 | ␊ |
326 | ␉// --------------------------------------------------------------------␊ |
327 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
328 | ␉// functions returning int and simply return for void functions.␊ |
329 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
330 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_64, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64));␊ |
331 | ␊ |
332 | ␉// --------------------------------------------------------------------␊ |
333 | ␉// System table␊ |
334 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
335 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
336 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
337 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
338 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
339 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
340 | ␊ |
341 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
342 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
343 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
344 | ␊ |
345 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
346 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
347 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
348 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
349 | ␉efiSystemTable->ConIn = 0;␊ |
350 | ␊ |
351 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
352 | ␉efiSystemTable->ConOut = 0;␊ |
353 | ␊ |
354 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
355 | ␉efiSystemTable->StdErr = 0;␊ |
356 | ␊ |
357 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
358 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
359 | ␉// boot process is exited so we can probably do without it.␊ |
360 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
361 | ␉// so I'm guessing they don't use it.␊ |
362 | ␉efiSystemTable->BootServices = 0;␊ |
363 | ␊ |
364 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
365 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
366 | ␊ |
367 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
368 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
369 | ␊ |
370 | ␉// --------------------------------------------------------------------␊ |
371 | ␉// Runtime services␊ |
372 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
373 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
374 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
375 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
376 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
377 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
378 | ␊ |
379 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
380 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
381 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
382 | ␉// will call these without checking to see if they are null.␊ |
383 | ␉//␊ |
384 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
385 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
386 | ␉// at least providing some sort of implementation until one can be provided␊ |
387 | ␉// nicely in a kext.␊ |
388 | ␊ |
389 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
390 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
391 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
392 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
393 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
394 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
395 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
396 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
397 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
398 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
399 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
400 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
401 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
402 | ␊ |
403 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
404 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
405 | ␊ |
406 | ␉// --------------------------------------------------------------------␊ |
407 | ␉// Finish filling in the rest of the boot args that we need.␊ |
408 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
409 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
410 | ␊ |
411 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
412 | ␉// things like efiRuntimeServices* and what not.␊ |
413 | ␉//␊ |
414 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
415 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
416 | }␊ |
417 | ␊ |
418 | /*␊ |
419 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
420 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
421 | * the tsc_init function will panic very early on in kernel startup, before␊ |
422 | * the console is available.␊ |
423 | */␊ |
424 | ␊ |
425 | /*==========================================================================␊ |
426 | * FSB Frequency detection␊ |
427 | */␊ |
428 | ␊ |
429 | /* These should be const but DT__AddProperty takes char* */␊ |
430 | static const char TSC_Frequency_prop[] = "TSCFrequency";␊ |
431 | static const char FSB_Frequency_prop[] = "FSBFrequency";␊ |
432 | static const char CPU_Frequency_prop[] = "CPUFrequency";␊ |
433 | ␊ |
434 | /*==========================================================================␊ |
435 | * SMBIOS␊ |
436 | */␊ |
437 | ␊ |
438 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
439 | EFI_GUID const gEfiSmbiosTableGuid = SMBIOS_TABLE_GUID;␊ |
440 | ␊ |
441 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
442 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
443 | ␊ |
444 | /* '_SM_' in little endian: */␊ |
445 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
446 | ␊ |
447 | EFI_GUID gEfiAcpiTableGuid = ACPI_TABLE_GUID;␊ |
448 | EFI_GUID gEfiAcpi20TableGuid = ACPI_20_TABLE_GUID;␊ |
449 | ␊ |
450 | ␊ |
451 | /*==========================================================================␊ |
452 | * Fake EFI implementation␊ |
453 | */␊ |
454 | ␊ |
455 | /* These should be const but DT__AddProperty takes char* */␊ |
456 | static const char FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
457 | static const char FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
458 | static const char FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
459 | static const char FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
460 | static const char FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
461 | static const char EFI_MODE_PROP[] = "efi-mode"; //Bungo␊ |
462 | static const char SYSTEM_ID_PROP[] = "system-id";␊ |
463 | static const char SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
464 | static const char SYSTEM_TYPE_PROP[] = "system-type";␊ |
465 | static const char MODEL_PROP[] = "Model";␊ |
466 | static const char BOARDID_PROP[] = "board-id";␊ |
467 | static const char DEV_PATH_SUP[] = "DevicePathsSupported";␊ |
468 | static const char START_POWER_EV[] = "StartupPowerEvents";␊ |
469 | static const char MACHINE_SIG_PROP[] = "machine-signature";␊ |
470 | static EFI_UINT8 const DEVICE_PATHS_SUPPORTED[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
471 | static EFI_UINT8 const STARTUP_POWER_EVENTS[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };␊ |
472 | static EFI_UINT8 const COMPAT_MODE[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
473 | ␊ |
474 | /*␊ |
475 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
476 | */␊ |
477 | static EFI_CHAR16 *getSmbiosChar16(const char *key, size_t *len)␊ |
478 | {␊ |
479 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
480 | ␉EFI_CHAR16␉*dst = 0;␊ |
481 | ␉size_t␉␉ i = 0;␊ |
482 | ␊ |
483 | ␉if (!key || !(*key) || !len || !src)␊ |
484 | ␉{␊ |
485 | ␉␉return 0;␊ |
486 | ␉}␊ |
487 | ␉␊ |
488 | ␉*len = strlen(src);␊ |
489 | ␉dst = (EFI_CHAR16 *) malloc( ((*len)+1) * 2 );␊ |
490 | ␉for (; i < (*len); i++)␊ |
491 | ␉{␊ |
492 | ␉␉dst[i] = src[i];␊ |
493 | ␉}␊ |
494 | ␉dst[(*len)] = '\0';␊ |
495 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize including zero terminated CHAR16␊ |
496 | ␉return dst;␊ |
497 | }␊ |
498 | ␊ |
499 | // Bungo␊ |
500 | /*␊ |
501 | * Get the SystemID from the bios dmi info␊ |
502 | ␊ |
503 | static␉EFI_CHAR8 *getSmbiosUUID()␊ |
504 | {␊ |
505 | ␉static EFI_CHAR8␉uuid[UUID_LEN];␊ |
506 | ␉int␉␉␉i;␊ |
507 | ␉int␉␉␉isZero;␊ |
508 | ␉int␉␉␉isOnes;␊ |
509 | ␉SMBByte␉␉␉*p;␊ |
510 | ␊ |
511 | ␉p = (SMBByte *)Platform.UUID;␊ |
512 | ␊ |
513 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++)␊ |
514 | ␉{␊ |
515 | ␉␉if (p[i] != 0x00)␊ |
516 | ␉␉{␊ |
517 | ␉␉␉isZero = 0;␊ |
518 | ␉␉}␊ |
519 | ␊ |
520 | ␉␉if (p[i] != 0xff)␊ |
521 | ␉␉{␊ |
522 | ␉␉␉isOnes = 0;␊ |
523 | ␉␉}␊ |
524 | ␉}␊ |
525 | ␊ |
526 | ␉if (isZero || isOnes) // empty or setable means: no uuid present␊ |
527 | ␉{␊ |
528 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
529 | ␉␉return 0;␊ |
530 | ␉}␊ |
531 | ␊ |
532 | ␉memcpy(uuid, p, UUID_LEN);␊ |
533 | ␉return uuid;␊ |
534 | }␊ |
535 | ␊ |
536 | ␊ |
537 | // return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
538 | // or from the bios if not, or from a fixed value if no bios value is found ␊ |
539 | ␊ |
540 | static EFI_CHAR8 *getSystemID()␊ |
541 | {␊ |
542 | ␉// unable to determine UUID for host. Error: 35 fix␊ |
543 | ␉// Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
544 | ␉// belong to smbios config only ...␊ |
545 | ␉const char *sysId = getStringForKey(kSystemID, &bootInfo->chameleonConfig);␊ |
546 | ␉EFI_CHAR8*␉ret = getUUIDFromString(sysId);␊ |
547 | ␊ |
548 | ␉if (!sysId || !ret) // try bios dmi info UUID extraction␊ |
549 | ␉{␊ |
550 | ␉␉ret = getSmbiosUUID();␊ |
551 | ␉␉sysId = 0;␊ |
552 | ␉}␊ |
553 | ␊ |
554 | ␉if (!ret)␊ |
555 | ␉{␊ |
556 | ␉␉// no bios dmi UUID available, set a fixed value for system-id␊ |
557 | ␉␉ret=getUUIDFromString((sysId = (const char *) SYSTEM_ID));␊ |
558 | ␉}␊ |
559 | ␉verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
560 | ␉return ret;␊ |
561 | }␊ |
562 | */␊ |
563 | ␊ |
564 | /*␊ |
565 | * Must be called AFTER setupAcpi because we need to take care of correct␊ |
566 | * FACP content to reflect in ioregs␊ |
567 | */␊ |
568 | void setupSystemType()␊ |
569 | {␊ |
570 | ␉Node *node = DT__FindNode("/", false);␊ |
571 | ␉if (node == 0)␊ |
572 | ␉{␊ |
573 | ␉␉stop("Couldn't get root '/' node");␊ |
574 | ␉}␊ |
575 | ␉// we need to write this property after facp parsing␊ |
576 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
577 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
578 | }␊ |
579 | ␊ |
580 | static void setupEfiDeviceTree(void)␊ |
581 | {␊ |
582 | ␉// EFI_CHAR8␉*ret = 0; Bungo: not used␊ |
583 | ␉EFI_CHAR16␉*ret16 = 0;␊ |
584 | ␉size_t␉␉ len = 0;␊ |
585 | ␉Node␉␉*node;␊ |
586 | ␊ |
587 | ␉node = DT__FindNode("/", false);␊ |
588 | ␊ |
589 | ␉if (node == 0)␊ |
590 | ␉{␊ |
591 | ␉␉stop("Couldn't get root node");␊ |
592 | ␉}␊ |
593 | ␊ |
594 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
595 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
596 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
597 | ␉node = DT__AddChild(node, "efi");␊ |
598 | ␊ |
599 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
600 | ␉{␊ |
601 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char *)FIRMWARE_ABI_32_PROP_VALUE);␊ |
602 | ␉}␊ |
603 | ␉else␊ |
604 | ␉{␊ |
605 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char *)FIRMWARE_ABI_64_PROP_VALUE);␊ |
606 | ␉}␊ |
607 | ␊ |
608 | ␉DT__AddProperty(node, EFI_MODE_PROP, sizeof(EFI_UINT8), (EFI_UINT8 *)&bootArgs->efiMode);␊ |
609 | ␊ |
610 | ␉DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32 *)&FIRMWARE_REVISION);␊ |
611 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16 *)FIRMWARE_VENDOR);␊ |
612 | ␊ |
613 | ␉// TODO: Fill in other efi properties if necessary␊ |
614 | ␊ |
615 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
616 | ␉// is set up. That is, name and table properties␊ |
617 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
618 | ␊ |
619 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
620 | ␉{␊ |
621 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
622 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
623 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
624 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
625 | ␊ |
626 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
627 | ␉}␊ |
628 | ␉else␊ |
629 | ␉{␊ |
630 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
631 | ␉}␊ |
632 | ␊ |
633 | ␉// Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
634 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
635 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
636 | ␊ |
637 | ␉// New node: /efi/kernel-compatibility␊ |
638 | ␉Node *efiKernelComNode = DT__AddChild(node, "kernel-compatibility");␊ |
639 | ␊ |
640 | ␉if (MacOSVerCurrent >= MacOSVer2Int("10.9"))␊ |
641 | ␉{␊ |
642 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
643 | ␉}␊ |
644 | ␉else␊ |
645 | ␉{␊ |
646 | ␉␉DT__AddProperty(efiKernelComNode, "i386", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
647 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
648 | ␉}␊ |
649 | ␊ |
650 | ␉// Now fill in the /efi/platform Node␊ |
651 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform"); // "/efi/platform"␊ |
652 | ␊ |
653 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
654 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
655 | ␉// because the DT_AddProperty function does not copy its args.␊ |
656 | ␊ |
657 | ␉if (Platform.CPU.FSBFrequency != 0)␊ |
658 | ␉{␊ |
659 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
660 | ␉}␊ |
661 | ␊ |
662 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
663 | ␉if (Platform.CPU.TSCFrequency != 0)␊ |
664 | ␉{␊ |
665 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
666 | ␉}␊ |
667 | ␊ |
668 | ␉if (Platform.CPU.CPUFrequency != 0)␊ |
669 | ␉{␊ |
670 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
671 | ␉}␊ |
672 | ␊ |
673 | ␉DT__AddProperty(efiPlatformNode,START_POWER_EV, sizeof(STARTUP_POWER_EVENTS), (EFI_UINT8 *) &STARTUP_POWER_EVENTS);␊ |
674 | ␊ |
675 | ␉DT__AddProperty(efiPlatformNode,DEV_PATH_SUP, sizeof(DEVICE_PATHS_SUPPORTED), (EFI_UINT8 *) &DEVICE_PATHS_SUPPORTED);␊ |
676 | ␊ |
677 | ␉// Bungo␊ |
678 | ␉/* Export system-id. Can be disabled with SystemId=No in com.apple.Boot.plist␊ |
679 | ␉if ((ret=getSystemID()))␊ |
680 | ␉{␊ |
681 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *) ret);␊ |
682 | ␉}␊ |
683 | ␉*/␊ |
684 | ␊ |
685 | ␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *)Platform.UUID);␊ |
686 | ␊ |
687 | ␉// Export SystemSerialNumber if present␊ |
688 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
689 | ␉{␊ |
690 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
691 | ␉}␊ |
692 | ␊ |
693 | ␉// Export Model if present␊ |
694 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
695 | ␉{␊ |
696 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
697 | ␉}␊ |
698 | ␊ |
699 | ␉// Fill /efi/device-properties node.␊ |
700 | ␉setupDeviceProperties(node);␊ |
701 | }␊ |
702 | ␊ |
703 | /*␊ |
704 | * Must be called AFTER getSmbios␊ |
705 | */␊ |
706 | void setupBoardId()␊ |
707 | {␊ |
708 | ␉Node *node;␊ |
709 | ␉node = DT__FindNode("/", false);␊ |
710 | ␉if (node == 0)␊ |
711 | ␉{␊ |
712 | ␉␉stop("Couldn't get root '/' node");␊ |
713 | ␉}␊ |
714 | ␉const char *boardid = getStringForKey("SMboardproduct", &bootInfo->smbiosConfig);␊ |
715 | ␉if (boardid)␊ |
716 | ␉{␊ |
717 | ␉␉DT__AddProperty(node, BOARDID_PROP, strlen(boardid)+1, (EFI_CHAR16*)boardid);␊ |
718 | ␉}␊ |
719 | }␊ |
720 | ␊ |
721 | /*␊ |
722 | * Populate the chosen node␊ |
723 | */␊ |
724 | ␊ |
725 | void setupChosenNode()␊ |
726 | {␊ |
727 | ␉Node *chosenNode;␊ |
728 | ␉chosenNode = DT__FindNode("/chosen", false);␊ |
729 | ␉if (chosenNode == 0)␊ |
730 | ␉{␊ |
731 | ␉␉stop("setupChosenNode: Couldn't get '/chosen' node");␊ |
732 | ␉}␊ |
733 | ␊ |
734 | ␉// Only accept a UUID with the correct length.␊ |
735 | ␉if (strlen(gBootUUIDString) == 36)␊ |
736 | ␉{␊ |
737 | ␉␉DT__AddProperty(chosenNode, "boot-uuid", 37, gBootUUIDString);␊ |
738 | ␉}␊ |
739 | ␊ |
740 | ␉DT__AddProperty(chosenNode, "boot-args", sizeof(bootArgs->CommandLine), (EFI_UINT8 *)bootArgs->CommandLine);␊ |
741 | ␊ |
742 | ␉// Adding the default kernel name (mach_kernel) for kextcache.␊ |
743 | ␉DT__AddProperty(chosenNode, "boot-file", sizeof(bootInfo->bootFile), bootInfo->bootFile);␊ |
744 | ␊ |
745 | //␉DT__AddProperty(chosenNode, "boot-device-path", bootDPsize, gBootDP);␊ |
746 | ␊ |
747 | //␉DT__AddProperty(chosenNode, "boot-file-path", bootFPsize, gBootFP);␊ |
748 | ␊ |
749 | //␉DT__AddProperty(chosenNode, "boot-kernelcache-adler32", sizeof(adler32), adler32);␊ |
750 | ␊ |
751 | ␉DT__AddProperty(chosenNode, MACHINE_SIG_PROP, sizeof(Platform.HWSignature), (EFI_UINT32 *)&Platform.HWSignature);␊ |
752 | ␊ |
753 | ␉if (MacOSVerCurrent >= MacOSVer2Int("10.10"))␊ |
754 | ␉{␊ |
755 | ␉␉//␊ |
756 | ␉␉// Pike R. Alpha - 12 October 2014␊ |
757 | ␉␉//␊ |
758 | ␉␉UInt8 index = 0;␊ |
759 | ␉␉EFI_UINT16 PMTimerValue = 0;␊ |
760 | ␉␉EFI_UINT32 randomValue = 0, cpuTick = 0;␊ |
761 | ␉␉EFI_UINT32 ecx = 0, edx = 0, esi = 0, edi = 0;␊ |
762 | ␊ |
763 | ␉␉// LEAF_1 - Feature Information (Function 01h).␊ |
764 | ␉␉if (Platform.CPU.CPUID[CPUID_1][2] & 0x40000000)␉␉␉␉// Checking ecx:bit-30␊ |
765 | ␉␉{␊ |
766 | ␉␉␉//␊ |
767 | ␉␉␉// i5/i7 Ivy Bridge and Haswell processors with RDRAND support.␊ |
768 | ␉␉␉//␊ |
769 | ␉␉␉EFI_UINT32 seedBuffer[16] = {0};␊ |
770 | ␉␉␉//␊ |
771 | ␉␉␉// Main loop to get 16 dwords (four bytes each).␊ |
772 | ␉␉␉//␊ |
773 | ␉␉␉for (index = 0; index < 16; index++)␉␉␉␉␉// 0x17e12:␊ |
774 | ␉␉␉{␊ |
775 | ␉␉␉␉randomValue = computeRand();␉␉␉␉␉// callq␉0x18e20␊ |
776 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉␉␉// callq␉0x121a7␊ |
777 | ␉␉␉␉randomValue = (randomValue ^ cpuTick);␉␉␉␉// xor␉␉%rdi,␉%rax␊ |
778 | ␉␉␉␉seedBuffer[index] = randomValue;␉␉␉␉// mov␉␉%rax,(%r15,%rsi,8)␊ |
779 | ␉␉␉}␉␉␉␉␉␉␉␉␉// jb␉␉0x17e12␊ |
780 | ␊ |
781 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT32 *) &seedBuffer);␊ |
782 | ␉␉}␊ |
783 | ␉␉else␊ |
784 | ␉␉{␊ |
785 | ␉␉␉//␊ |
786 | ␉␉␉// All other processors without RDRAND support.␊ |
787 | ␉␉␉//␊ |
788 | ␉␉␉EFI_UINT8 seedBuffer[64] = {0};␊ |
789 | ␉␉␉//␊ |
790 | ␉␉␉// Main loop to get the 64 bytes.␊ |
791 | ␉␉␉//␊ |
792 | ␉␉␉do␉␉␉␉␉␉␉␉␉// 0x17e55:␊ |
793 | ␉␉␉{␊ |
794 | ␉␉␉␉//␊ |
795 | ␉␉␉␉// FIXME: PM Timer is usually @ 0x408, but its position is relocatable␊ |
796 | ␉␉␉␉// via PCI-to-ISA bridge. The location is reported in ACPI FADT,␊ |
797 | ␉␉␉␉// PM Timer Block address - zenith432␊ |
798 | ␉␉␉␉//␊ |
799 | ␉␉␉␉PMTimerValue = inw(0x408);␉␉␉␉␉// in␉␉(%dx),␉%ax␊ |
800 | ␉␉␉␉esi = PMTimerValue;␉␉␉␉␉␉// movzwl␉%ax,␉%esi␊ |
801 | ␊ |
802 | ␉␉␉␉if (esi < ecx)␉␉␉␉␉␉␉// cmp␉␉%ecx,␉%esi␊ |
803 | ␉␉␉␉{␊ |
804 | ␉␉␉␉␉continue;␉␉␉␉␉␉// jb␉␉0x17e55␉␉(retry)␊ |
805 | ␉␉␉␉}␊ |
806 | ␊ |
807 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉// callq␉0x121a7␊ |
808 | //␉␉␉␉printf("value: 0x%x\n", getCPUTick());␊ |
809 | ␉␉␉␉ecx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
810 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
811 | ␉␉␉␉edx = (cpuTick >> 0x10);␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
812 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
813 | ␉␉␉␉edi = esi;␉␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
814 | ␉␉␉␉edi = (edi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
815 | ␉␉␉␉edi = (edi ^ ecx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
816 | ␉␉␉␉edi = (edi ^ edx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
817 | ␊ |
818 | ␉␉␉␉seedBuffer[index] = (edi & 0xff);␉␉␉␉// mov␉␉%dil,␉(%r15,%r12,1)␊ |
819 | ␊ |
820 | ␉␉␉␉edi = (edi & 0x2f);␉␉␉␉␉␉// and␉␉$0x2f,␉%edi␊ |
821 | ␉␉␉␉edi = (edi + esi);␉␉␉␉␉␉// add␉␉%esi,␉%edi␊ |
822 | ␉␉␉␉index++;␉␉␉␉␉␉␉// inc␉␉r12␊ |
823 | ␉␉␉␉ecx = (edi & 0xffff);␉␉␉␉␉␉// movzwl␉%di,␉%ecx␊ |
824 | ␊ |
825 | ␉␉␉} while (index < 64);␉␉␉␉␉␉␉// cmp␉␉%r14d,␉%r12d␊ |
826 | ␉␉␉// jne␉␉0x17e55␉␉(next)␊ |
827 | ␊ |
828 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT8 *) &seedBuffer);␊ |
829 | ␊ |
830 | ␉␉}␊ |
831 | ␉}␊ |
832 | }␊ |
833 | ␊ |
834 | /*␊ |
835 | * Load the smbios.plist override config file if any␊ |
836 | */␊ |
837 | static void setupSmbiosConfigFile(const char *filename)␊ |
838 | {␊ |
839 | ␉char␉␉dirSpecSMBIOS[128];␊ |
840 | ␉const char␉*override_pathname = NULL;␊ |
841 | ␉int␉␉len = 0, err = 0;␊ |
842 | ␉extern void scan_mem();␊ |
843 | ␊ |
844 | ␉// Take in account user overriding␊ |
845 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->chameleonConfig) && len > 0)␊ |
846 | ␉{␊ |
847 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
848 | ␉␉strcpy(dirSpecSMBIOS, override_pathname);␊ |
849 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
850 | ␉}␊ |
851 | ␉else␊ |
852 | ␉{␊ |
853 | ␉␉// Check selected volume's Extra.␊ |
854 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
855 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
856 | ␉}␊ |
857 | ␊ |
858 | ␉if (err)␊ |
859 | ␉{␊ |
860 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
861 | ␉}␊ |
862 | ␊ |
863 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options␊ |
864 | ␉// loaded as well, as opposed to when it was in scan_platform(); also load the orig. smbios␊ |
865 | ␉// so that we can access dmi info, without patching the smbios yet.␊ |
866 | ␉scan_mem(); ␊ |
867 | }␊ |
868 | ␊ |
869 | /*␊ |
870 | * Installs all the needed configuration table entries␊ |
871 | */␊ |
872 | static void setupEfiConfigurationTable()␊ |
873 | {␊ |
874 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
875 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
876 | ␊ |
877 | ␉setupBoardId(); //need to be called after getSmbios␊ |
878 | ␊ |
879 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
880 | ␉setupAcpi();␊ |
881 | ␊ |
882 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
883 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
884 | ␉{␊ |
885 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
886 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
887 | ␉}␊ |
888 | ␉else␊ |
889 | ␉{␊ |
890 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
891 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
892 | ␉}␊ |
893 | ␊ |
894 | ␉// Setup the chosen node␊ |
895 | ␉setupChosenNode();␊ |
896 | }␊ |
897 | ␊ |
898 | void saveOriginalSMBIOS(void)␊ |
899 | {␊ |
900 | ␉Node *node;␊ |
901 | ␉SMBEntryPoint *origeps;␊ |
902 | ␉void *tableAddress;␊ |
903 | ␊ |
904 | ␉node = DT__FindNode("/efi/platform", false);␊ |
905 | ␉if (!node)␊ |
906 | ␉{␊ |
907 | ␉␉DBG("saveOriginalSMBIOS: '/efi/platform' node not found\n");␊ |
908 | ␉␉return;␊ |
909 | ␉}␊ |
910 | ␊ |
911 | ␉origeps = getSmbios(SMBIOS_ORIGINAL);␊ |
912 | ␉if (!origeps)␊ |
913 | ␉{␊ |
914 | ␉␉DBG("saveOriginalSMBIOS: original SMBIOS not found\n");␊ |
915 | ␉␉return;␊ |
916 | ␉}␊ |
917 | ␊ |
918 | ␉tableAddress = (void *)AllocateKernelMemory(origeps->dmi.tableLength);␊ |
919 | ␉if (!tableAddress)␊ |
920 | ␉{␊ |
921 | ␉␉DBG("saveOriginalSMBIOS: can not allocate memory for original SMBIOS\n");␊ |
922 | ␉␉return;␊ |
923 | ␉}␊ |
924 | ␊ |
925 | ␉memcpy(tableAddress, (void *)origeps->dmi.tableAddress, origeps->dmi.tableLength);␊ |
926 | ␉DT__AddProperty(node, "SMBIOS", origeps->dmi.tableLength, tableAddress);␊ |
927 | }␊ |
928 | ␊ |
929 | /*␊ |
930 | * Entrypoint from boot.c␊ |
931 | */␊ |
932 | void setupFakeEfi(void)␊ |
933 | {␊ |
934 | ␉// Generate efi device strings␊ |
935 | ␉setup_pci_devs(root_pci_dev);␊ |
936 | ␊ |
937 | ␉readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
938 | ␊ |
939 | ␉// load smbios.plist file if any␊ |
940 | ␉setupSmbiosConfigFile("smbios.plist");␊ |
941 | ␊ |
942 | ␉setupSMBIOSTable();␊ |
943 | ␊ |
944 | ␉// Initialize the base table␊ |
945 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
946 | ␉{␊ |
947 | ␉␉setupEfiTables32();␊ |
948 | ␉}␊ |
949 | ␉else␊ |
950 | ␉{␊ |
951 | ␉␉setupEfiTables64();␊ |
952 | ␉}␊ |
953 | ␊ |
954 | ␉// Initialize the device tree␊ |
955 | ␉setupEfiDeviceTree();␊ |
956 | ␊ |
957 | ␉saveOriginalSMBIOS();␊ |
958 | ␊ |
959 | ␉// Add configuration table entries to both the services table and the device tree␊ |
960 | ␉setupEfiConfigurationTable();␊ |
961 | }␊ |
962 | |