1 | ␊ |
2 | /*␊ |
3 | * Copyright 2007 David F. Elliott.␉ All rights reserved.␊ |
4 | */␊ |
5 | ␊ |
6 | #include "config.h"␊ |
7 | #include "saio_types.h"␊ |
8 | #include "libsaio.h"␊ |
9 | #include "boot.h"␊ |
10 | #include "bootstruct.h"␊ |
11 | #include "efi.h"␊ |
12 | #include "acpi.h"␊ |
13 | #include "fake_efi.h"␊ |
14 | #include "efi_tables.h"␊ |
15 | #include "platform.h"␊ |
16 | #include "acpi_patcher.h"␊ |
17 | #include "smbios.h"␊ |
18 | #include "device_inject.h"␊ |
19 | #include "convert.h"␊ |
20 | #include "pci.h"␊ |
21 | #include "sl.h"␊ |
22 | #include "vers.h"␊ |
23 | ␊ |
24 | #if DEBUG_EFI␊ |
25 | ␉#define DBG(x...)␉printf(x)␊ |
26 | #else␊ |
27 | ␉#define DBG(x...)␊ |
28 | #endif␊ |
29 | ␊ |
30 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
31 | ␊ |
32 | /*␊ |
33 | * Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
34 | * have EFI. Modifying the kernel source to not require EFI is of course␊ |
35 | * possible but would have to be maintained as a separate patch because it is␊ |
36 | * unlikely that Apple wishes to add legacy support to their kernel.␊ |
37 | *␊ |
38 | * As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
39 | * the intention was clearly to modify this booter to provide EFI-like structures␊ |
40 | * to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
41 | * makes a lot of sense from an engineering point of view as it means the kernel␊ |
42 | * for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
43 | * DTK systems so long as the kernel checked to ensure the boot tables were␊ |
44 | * filled in appropriately.␉Modern xnu requires a system table and a runtime␊ |
45 | * services table and performs no checks whatsoever to ensure the pointers to␊ |
46 | * these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
47 | * early on in the boot process if the system table pointer is zero.␊ |
48 | *␊ |
49 | * Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
50 | * Frequency to be a property in the /efi/platform node of the device tree or else␊ |
51 | * it panics the bootstrap process very early on.␊ |
52 | *␊ |
53 | * As of this writing, the current implementation found here is good enough␊ |
54 | * to make the currently available xnu kernel boot without modification on a␊ |
55 | * system with an appropriate processor. With a minor source modification to␊ |
56 | * the tsc_init function to remove the explicit check for Core or Core 2␊ |
57 | * processors the kernel can be made to boot on other processors so long as␊ |
58 | * the code can be executed by the processor and the machine contains the␊ |
59 | * necessary hardware.␊ |
60 | */␊ |
61 | ␊ |
62 | /*==========================================================================␊ |
63 | * Utility function to make a device tree string from an EFI_GUID␊ |
64 | */␊ |
65 | static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊ |
66 | {␊ |
67 | ␉char *string = malloc(37);␊ |
68 | ␉efi_guid_unparse_upper(pGuid, string);␊ |
69 | ␉return string;␊ |
70 | }␊ |
71 | ␊ |
72 | /*==========================================================================␊ |
73 | * Function to map 32 bit physical address to 64 bit virtual address␊ |
74 | */␊ |
75 | static uint64_t ptov64(uint32_t addr)␊ |
76 | {␊ |
77 | ␉return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊ |
78 | }␊ |
79 | ␊ |
80 | // ==========================================================================␊ |
81 | ␊ |
82 | EFI_UINT32 getCPUTick(void)␊ |
83 | {␊ |
84 | ␉uint32_t out;␊ |
85 | ␉/*␊ |
86 | ␉ * Note: shl $32, %edx leaves 0 in %edx, and or to %eax does nothing - zenith432␊ |
87 | ␉ */␊ |
88 | ␉__asm__ volatile (␊ |
89 | ␉␉"rdtsc\n"␊ |
90 | ␉␉"shl $32,%%edx\n"␊ |
91 | ␉␉"or %%edx,%%eax\n"␊ |
92 | ␉␉: "=a" (out)␊ |
93 | ␉␉:␊ |
94 | ␉␉: "%edx"␊ |
95 | ␉);␊ |
96 | ␉return out;␊ |
97 | }␊ |
98 | ␊ |
99 | /*==========================================================================␊ |
100 | * Fake EFI implementation␊ |
101 | */␊ |
102 | ␊ |
103 | /* Identify ourselves as the EFI firmware vendor */␊ |
104 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','3', 0};␊ |
105 | ␊ |
106 | static EFI_UINT32 const FIRMWARE_REVISION = EFI_SYSTEM_TABLE_REVISION;␊ |
107 | ␊ |
108 | /* Default platform system_id (fix by IntVar)␊ |
109 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF"; //random value gen by uuidgen␊ |
110 | */␊ |
111 | ␊ |
112 | /* Just a ret instruction */␊ |
113 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
114 | ␊ |
115 | /* movl $0x80000003,%eax; ret */␊ |
116 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_32[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊ |
117 | static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS_64[] = {0x48, 0xb8, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc3};␊ |
118 | ␊ |
119 | EFI_SYSTEM_TABLE_32 *gST32 = NULL;␊ |
120 | EFI_SYSTEM_TABLE_64 *gST64 = NULL;␊ |
121 | Node *gEfiConfigurationTableNode = NULL;␊ |
122 | ␊ |
123 | // ==========================================================================␊ |
124 | ␊ |
125 | extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊ |
126 | {␊ |
127 | ␉EFI_UINTN i = 0;␊ |
128 | ␊ |
129 | ␉//Azi: as is, cpu's with em64t will use EFI64 on pre 10.6 systems,␊ |
130 | ␉// wich seems to cause no problem. In case it does, force i386 arch.␊ |
131 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
132 | ␉{␊ |
133 | ␉␉i = gST32->NumberOfTableEntries;␊ |
134 | ␉}␊ |
135 | ␉else␊ |
136 | ␉{␊ |
137 | ␉␉i = gST64->NumberOfTableEntries;␊ |
138 | ␉}␊ |
139 | ␊ |
140 | ␉// We only do adds, not modifications and deletes like InstallConfigurationTable␊ |
141 | ␉if (i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊ |
142 | ␉{␊ |
143 | ␉␉stop("Fake EFI [ERROR]: Ran out of space for configuration tables [%d]. Increase the reserved size in the code.\n", i);␊ |
144 | ␉}␊ |
145 | ␊ |
146 | ␉if (pGuid == NULL)␊ |
147 | ␉{␊ |
148 | ␉␉return EFI_INVALID_PARAMETER;␊ |
149 | ␉}␊ |
150 | ␊ |
151 | ␉if (table != NULL)␊ |
152 | ␉{␊ |
153 | ␉␉// FIXME␊ |
154 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊ |
155 | ␉␉//((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊ |
156 | ␊ |
157 | ␉␉//++gST->NumberOfTableEntries;␊ |
158 | ␊ |
159 | ␉␉Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊ |
160 | ␊ |
161 | ␉␉// Use the pointer to the GUID we just stuffed into the system table␊ |
162 | ␉␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void *)pGuid);␊ |
163 | ␊ |
164 | ␉␉// The "table" property is the 32-bit (in our implementation) physical address of the table␊ |
165 | ␉␉DT__AddProperty(tableNode, "table", sizeof(void *) * 2, table);␊ |
166 | ␊ |
167 | ␉␉// Assume the alias pointer is a global or static piece of data␊ |
168 | ␉␉if (alias != NULL)␊ |
169 | ␉␉{␊ |
170 | ␉␉␉DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char *)alias);␊ |
171 | ␉␉}␊ |
172 | ␊ |
173 | ␉␉return EFI_SUCCESS;␊ |
174 | ␉}␊ |
175 | ␉return EFI_UNSUPPORTED;␊ |
176 | }␊ |
177 | ␊ |
178 | // ==========================================================================␊ |
179 | ␊ |
180 | //Azi: crc32 done in place, on the cases were it wasn't.␊ |
181 | /*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊ |
182 | {␊ |
183 | ␉efiSystemTable->Hdr.CRC32 = 0;␊ |
184 | ␉efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊ |
185 | }*/␊ |
186 | ␊ |
187 | /*␊ |
188 | * What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
189 | * runtime services table.␊ |
190 | *␊ |
191 | * Because we build against modern headers with kBootArgsRevision 4 we␊ |
192 | * also take care to set efiMode = 32.␊ |
193 | */␊ |
194 | void setupEfiTables32(void)␊ |
195 | {␊ |
196 | ␉// We use the fake_efi_pages struct so that we only need to do one kernel␊ |
197 | ␉// memory allocation for all needed EFI data. Otherwise, small allocations␊ |
198 | ␉// like the FIRMWARE_VENDOR string would take up an entire page.␊ |
199 | ␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊ |
200 | ␉// It is absolutely not intended to be publicly exposed anywhere␊ |
201 | ␉// We say pages (plural) although right now we are well within the 1 page size␊ |
202 | ␉// and probably will stay that way.␊ |
203 | ␉struct fake_efi_pages␊ |
204 | ␉{␊ |
205 | ␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊ |
206 | ␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊ |
207 | ␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
208 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
209 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
210 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32)/sizeof(uint8_t)];␊ |
211 | ␉};␊ |
212 | ␊ |
213 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
214 | ␊ |
215 | ␉// Zero out all the tables in case fields are added later␊ |
216 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
217 | ␉␊ |
218 | ␉// --------------------------------------------------------------------␊ |
219 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
220 | ␉// functions returning int and simply return for void functions.␊ |
221 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
222 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_32, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_32));␊ |
223 | ␉␊ |
224 | ␉// --------------------------------------------------------------------␊ |
225 | ␉// System table␊ |
226 | ␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊ |
227 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
228 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
229 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊ |
230 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
231 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
232 | ␉␊ |
233 | ␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊ |
234 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
235 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
236 | ␉␊ |
237 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
238 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
239 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
240 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
241 | ␉efiSystemTable->ConIn = 0;␊ |
242 | ␊ |
243 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
244 | ␉efiSystemTable->ConOut = 0;␊ |
245 | ␊ |
246 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
247 | ␉efiSystemTable->StdErr = 0;␊ |
248 | ␊ |
249 | ␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊ |
250 | ␊ |
251 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
252 | ␉// boot process is exited so we can probably do without it.␊ |
253 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
254 | ␉// so I'm guessing they don't use it.␊ |
255 | ␉efiSystemTable->BootServices = 0;␊ |
256 | ␊ |
257 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
258 | ␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊ |
259 | ␊ |
260 | ␉// We're done. Now CRC32 the thing so the kernel will accept it.␊ |
261 | ␉// Must be initialized to zero before CRC32, done above.␊ |
262 | ␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
263 | ␊ |
264 | ␉// --------------------------------------------------------------------␊ |
265 | ␉// Runtime services␊ |
266 | ␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
267 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
268 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
269 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊ |
270 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
271 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
272 | ␊ |
273 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
274 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
275 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
276 | ␉// will call these without checking to see if they are null.␊ |
277 | ␉//␊ |
278 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
279 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
280 | ␉// at least providing some sort of implementation until one can be provided␊ |
281 | ␉// nicely in a kext.␊ |
282 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
283 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
284 | ␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊ |
285 | ␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊ |
286 | ␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
287 | ␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊ |
288 | ␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊ |
289 | ␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊ |
290 | ␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
291 | ␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊ |
292 | ␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊ |
293 | ␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊ |
294 | ␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊ |
295 | ␊ |
296 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
297 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
298 | ␊ |
299 | ␉// --------------------------------------------------------------------␊ |
300 | ␉// Finish filling in the rest of the boot args that we need.␊ |
301 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
302 | ␉bootArgs->efiMode = kBootArgsEfiMode32;␊ |
303 | ␊ |
304 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
305 | ␉// things like efiRuntimeServices* and what not.␊ |
306 | ␉//␊ |
307 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
308 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
309 | }␊ |
310 | ␊ |
311 | void setupEfiTables64(void)␊ |
312 | {␊ |
313 | ␉struct fake_efi_pages␊ |
314 | ␉{␊ |
315 | ␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊ |
316 | ␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊ |
317 | ␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊ |
318 | ␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊ |
319 | ␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊ |
320 | ␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64)/sizeof(uint8_t)];␊ |
321 | ␉};␊ |
322 | ␊ |
323 | ␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages *)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊ |
324 | ␊ |
325 | ␉// Zero out all the tables in case fields are added later␊ |
326 | ␉//bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊ |
327 | ␊ |
328 | ␉// --------------------------------------------------------------------␊ |
329 | ␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊ |
330 | ␉// functions returning int and simply return for void functions.␊ |
331 | ␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊ |
332 | ␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS_64, sizeof(UNSUPPORTEDRET_INSTRUCTIONS_64));␊ |
333 | ␊ |
334 | ␉// --------------------------------------------------------------------␊ |
335 | ␉// System table␊ |
336 | ␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊ |
337 | ␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊ |
338 | ␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊ |
339 | ␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊ |
340 | ␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊ |
341 | ␉efiSystemTable->Hdr.Reserved = 0;␊ |
342 | ␊ |
343 | ␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊ |
344 | ␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊ |
345 | ␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊ |
346 | ␊ |
347 | ␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊ |
348 | ␉// The EFI spec states that all handles are invalid after boot services have been␊ |
349 | ␉// exited so we can probably get by with leaving the handles as zero.␊ |
350 | ␉efiSystemTable->ConsoleInHandle = 0;␊ |
351 | ␉efiSystemTable->ConIn = 0;␊ |
352 | ␊ |
353 | ␉efiSystemTable->ConsoleOutHandle = 0;␊ |
354 | ␉efiSystemTable->ConOut = 0;␊ |
355 | ␊ |
356 | ␉efiSystemTable->StandardErrorHandle = 0;␊ |
357 | ␉efiSystemTable->StdErr = 0;␊ |
358 | ␊ |
359 | ␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊ |
360 | ␉// According to the EFI spec, BootServices aren't valid after the␊ |
361 | ␉// boot process is exited so we can probably do without it.␊ |
362 | ␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊ |
363 | ␉// so I'm guessing they don't use it.␊ |
364 | ␉efiSystemTable->BootServices = 0;␊ |
365 | ␊ |
366 | ␉efiSystemTable->NumberOfTableEntries = 0;␊ |
367 | ␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊ |
368 | ␊ |
369 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
370 | ␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
371 | ␊ |
372 | ␉// --------------------------------------------------------------------␊ |
373 | ␉// Runtime services␊ |
374 | ␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊ |
375 | ␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊ |
376 | ␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊ |
377 | ␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊ |
378 | ␉efiRuntimeServices->Hdr.CRC32 = 0;␊ |
379 | ␉efiRuntimeServices->Hdr.Reserved = 0;␊ |
380 | ␊ |
381 | ␉// There are a number of function pointers in the efiRuntimeServices table.␊ |
382 | ␉// These are the Foundation (e.g. core) services and are expected to be present on␊ |
383 | ␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊ |
384 | ␉// will call these without checking to see if they are null.␊ |
385 | ␉//␊ |
386 | ␉// We don't really feel like doing an EFI implementation in the bootloader␊ |
387 | ␉// but it is nice if we can at least prevent a complete crash by␊ |
388 | ␉// at least providing some sort of implementation until one can be provided␊ |
389 | ␉// nicely in a kext.␊ |
390 | ␊ |
391 | ␉void (*voidret_fp)() = (void *)fakeEfiPages->voidret_instructions;␊ |
392 | ␉void (*unsupportedret_fp)() = (void *)fakeEfiPages->unsupportedret_instructions;␊ |
393 | ␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
394 | ␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
395 | ␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
396 | ␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
397 | ␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
398 | ␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
399 | ␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
400 | ␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
401 | ␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
402 | ␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊ |
403 | ␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊ |
404 | ␊ |
405 | ␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊ |
406 | ␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊ |
407 | ␊ |
408 | ␉// --------------------------------------------------------------------␊ |
409 | ␉// Finish filling in the rest of the boot args that we need.␊ |
410 | ␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊ |
411 | ␉bootArgs->efiMode = kBootArgsEfiMode64;␊ |
412 | ␊ |
413 | ␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊ |
414 | ␉// things like efiRuntimeServices* and what not.␊ |
415 | ␉//␊ |
416 | ␉// In fact, the only code that seems to use that is the hibernate code so it␊ |
417 | ␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊ |
418 | }␊ |
419 | ␊ |
420 | /*␊ |
421 | * In addition to the EFI tables there is also the EFI device tree node.␊ |
422 | * In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
423 | * the tsc_init function will panic very early on in kernel startup, before␊ |
424 | * the console is available.␊ |
425 | */␊ |
426 | ␊ |
427 | /*==========================================================================␊ |
428 | * FSB Frequency detection␊ |
429 | */␊ |
430 | ␊ |
431 | /* These should be const but DT__AddProperty takes char* */␊ |
432 | static const char TSC_Frequency_prop[] = "TSCFrequency";␊ |
433 | static const char FSB_Frequency_prop[] = "FSBFrequency";␊ |
434 | static const char CPU_Frequency_prop[] = "CPUFrequency";␊ |
435 | ␊ |
436 | /*==========================================================================␊ |
437 | * SMBIOS␊ |
438 | */␊ |
439 | ␊ |
440 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
441 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
442 | ␊ |
443 | #define SMBIOS_RANGE_START␉␉0x000F0000␊ |
444 | #define SMBIOS_RANGE_END␉␉0x000FFFFF␊ |
445 | ␊ |
446 | /* '_SM_' in little endian: */␊ |
447 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
448 | ␊ |
449 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
450 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
451 | ␊ |
452 | ␊ |
453 | /*==========================================================================␊ |
454 | * Fake EFI implementation␊ |
455 | */␊ |
456 | ␊ |
457 | /* These should be const but DT__AddProperty takes char* */␊ |
458 | static const char FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
459 | static const char FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
460 | static const char FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
461 | static const char FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊ |
462 | static const char FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊ |
463 | static const char EFI_MODE_PROP[] = "efi-mode"; //Bungo␊ |
464 | static const char SYSTEM_ID_PROP[] = "system-id";␊ |
465 | static const char SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
466 | static const char SYSTEM_TYPE_PROP[] = "system-type";␊ |
467 | static const char MODEL_PROP[] = "Model";␊ |
468 | static const char BOARDID_PROP[] = "board-id";␊ |
469 | static const char DEV_COLORS[] = "device-colors";␊ |
470 | static const char DEV_PATH_SUP[] = "DevicePathsSupported";␊ |
471 | static const char START_POWER_EV[] = "StartupPowerEvents";␊ |
472 | static const char MACHINE_SIG_PROP[] = "machine-signature";␊ |
473 | static EFI_UINT8 const DEVICE_PATHS_SUPPORTED[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
474 | static EFI_UINT8 const STARTUP_POWER_EVENTS[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };␊ |
475 | static EFI_UINT8 const COMPAT_MODE[] = { 0x01, 0x00, 0x00, 0x00 };␊ |
476 | ␊ |
477 | // Pike R. Alpha␊ |
478 | static EFI_UINT8 const BOOT_DEVICE_PATH[] =␊ |
479 | {␊ |
480 | 0x02, 0x01, 0x0C, 0x00, 0xD0, 0x41, 0x08, 0x0A, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x06, 0x00,␊ |
481 | 0x02, 0x1F, 0x03, 0x12, 0x0A, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x2A, 0x00,␊ |
482 | 0x02, 0x00, 0x00, 0x00, 0x28, 0x40, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x0B, 0x63, 0x34,␊ |
483 | 0x00, 0x00, 0x00, 0x00, 0x65, 0x8C, 0x53, 0x3F, 0x1B, 0xCA, 0x83, 0x38, 0xA9, 0xD0, 0xF0, 0x46,␊ |
484 | 0x19, 0x14, 0x8E, 0x31, 0x02, 0x02, 0x7F, 0xFF, 0x04, 0x00␊ |
485 | };␊ |
486 | // Pike R. Alpha␊ |
487 | static EFI_UINT8 const BOOT_FILE_PATH[] =␊ |
488 | {␊ |
489 | 0x04, 0x04, 0x50, 0x00, 0x5c, 0x00, 0x53, 0x00, 0x79, 0x00, 0x73, 0x00, 0x74, 0x00, 0x65, 0x00,␊ |
490 | 0x6d, 0x00, 0x5c, 0x00, 0x4c, 0x00, 0x69, 0x00, 0x62, 0x00, 0x72, 0x00, 0x61, 0x00, 0x72, 0x00,␊ |
491 | 0x79, 0x00, 0x5c, 0x00, 0x43, 0x00, 0x6f, 0x00, 0x72, 0x00, 0x65, 0x00, 0x53, 0x00, 0x65, 0x00,␊ |
492 | 0x72, 0x00, 0x76, 0x00, 0x69, 0x00, 0x63, 0x00, 0x65, 0x00, 0x73, 0x00, 0x5c, 0x00, 0x62, 0x00,␊ |
493 | 0x6f, 0x00, 0x6f, 0x00, 0x74, 0x00, 0x2e, 0x00, 0x65, 0x00, 0x66, 0x00, 0x69, 0x00, 0x00, 0x00,␊ |
494 | 0x7f, 0xff, 0x04, 0x00␊ |
495 | };␊ |
496 | ␊ |
497 | /*␊ |
498 | * Get an smbios option string option to convert to EFI_CHAR16 string␊ |
499 | */␊ |
500 | static EFI_CHAR16 *getSmbiosChar16(const char *key, size_t *len)␊ |
501 | {␊ |
502 | ␉const char␉*src = getStringForKey(key, &bootInfo->smbiosConfig);␊ |
503 | ␉EFI_CHAR16␉*dst = 0;␊ |
504 | ␉size_t␉␉ i = 0;␊ |
505 | ␊ |
506 | ␉if (!key || !(*key) || !len || !src)␊ |
507 | ␉{␊ |
508 | ␉␉return 0;␊ |
509 | ␉}␊ |
510 | ␉␊ |
511 | ␉*len = strlen(src);␊ |
512 | ␉dst = (EFI_CHAR16 *) malloc( ((*len)+1) * 2 );␊ |
513 | ␉for (; i < (*len); i++)␊ |
514 | ␉{␊ |
515 | ␉␉dst[i] = src[i];␊ |
516 | ␉}␊ |
517 | ␉dst[(*len)] = '\0';␊ |
518 | ␉*len = ((*len)+1)*2; // return the CHAR16 bufsize including zero terminated CHAR16␊ |
519 | ␉return dst;␊ |
520 | }␊ |
521 | ␊ |
522 | /*␊ |
523 | * Must be called AFTER setupAcpi because we need to take care of correct␊ |
524 | * FACP content to reflect in ioregs␊ |
525 | */␊ |
526 | void setupSystemType()␊ |
527 | {␊ |
528 | ␉Node *node = DT__FindNode("/", false);␊ |
529 | ␉if (node == 0)␊ |
530 | ␉{␊ |
531 | ␉␉stop("Couldn't get root '/' node");␊ |
532 | ␉}␊ |
533 | ␉// we need to write this property after facp parsing␊ |
534 | ␉// Export system-type only if it has been overrriden by the SystemType option␊ |
535 | ␉DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
536 | }␊ |
537 | ␊ |
538 | static void setupEfiDeviceTree(void)␊ |
539 | {␊ |
540 | ␉// EFI_CHAR8␉*ret = 0; Bungo: not used␊ |
541 | ␉EFI_CHAR16␉*ret16 = 0;␊ |
542 | ␉size_t␉␉ len = 0;␊ |
543 | ␉Node␉␉*node;␊ |
544 | ␊ |
545 | ␉node = DT__FindNode("/", false);␊ |
546 | ␊ |
547 | ␉if (node == 0)␊ |
548 | ␉{␊ |
549 | ␉␉stop("Couldn't get root node");␊ |
550 | ␉}␊ |
551 | ␊ |
552 | ␉// We could also just do DT__FindNode("/efi/platform", true)␊ |
553 | ␉// But I think eventually we want to fill stuff in the efi node␊ |
554 | ␉// too so we might as well create it so we have a pointer for it too.␊ |
555 | ␉node = DT__AddChild(node, "efi");␊ |
556 | ␊ |
557 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
558 | ␉{␊ |
559 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char *)FIRMWARE_ABI_32_PROP_VALUE);␊ |
560 | ␉}␊ |
561 | ␉else␊ |
562 | ␉{␊ |
563 | ␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char *)FIRMWARE_ABI_64_PROP_VALUE);␊ |
564 | ␉}␊ |
565 | ␊ |
566 | ␉DT__AddProperty(node, EFI_MODE_PROP, sizeof(EFI_UINT8), (EFI_UINT8 *)&bootArgs->efiMode);␊ |
567 | ␊ |
568 | ␉DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32 *)&FIRMWARE_REVISION);␊ |
569 | ␉DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16 *)FIRMWARE_VENDOR);␊ |
570 | ␊ |
571 | ␉// TODO: Fill in other efi properties if necessary␊ |
572 | ␊ |
573 | ␉// Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
574 | ␉// is set up. That is, name and table properties␊ |
575 | ␉Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
576 | ␊ |
577 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
578 | ␉{␊ |
579 | ␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
580 | ␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
581 | ␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
582 | ␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊ |
583 | ␊ |
584 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊ |
585 | ␉}␊ |
586 | ␉else␊ |
587 | ␉{␊ |
588 | ␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊ |
589 | ␉}␊ |
590 | ␊ |
591 | ␉// Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
592 | ␉// all of the configuration tables needed by various kernel extensions.␊ |
593 | ␉gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
594 | ␊ |
595 | ␉// New node: /efi/kernel-compatibility␊ |
596 | ␉Node *efiKernelComNode = DT__AddChild(node, "kernel-compatibility");␊ |
597 | ␊ |
598 | ␉if (MacOSVerCurrent >= MacOSVer2Int("10.9"))␊ |
599 | ␉{␊ |
600 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
601 | ␉}␊ |
602 | ␉else␊ |
603 | ␉{␊ |
604 | ␉␉DT__AddProperty(efiKernelComNode, "i386", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
605 | ␉␉DT__AddProperty(efiKernelComNode, "x86_64", sizeof(COMPAT_MODE), (EFI_UINT8 *) &COMPAT_MODE);␊ |
606 | ␉}␊ |
607 | ␊ |
608 | ␉// Now fill in the /efi/platform Node␊ |
609 | ␉Node *efiPlatformNode = DT__AddChild(node, "platform"); // "/efi/platform"␊ |
610 | ␊ |
611 | ␉// NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
612 | ␉// the value in the fsbFrequency global and not an malloc'd pointer␊ |
613 | ␉// because the DT_AddProperty function does not copy its args.␊ |
614 | ␊ |
615 | ␉if (Platform.CPU.FSBFrequency != 0)␊ |
616 | ␉{␊ |
617 | ␉␉DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
618 | ␉}␊ |
619 | ␊ |
620 | ␉// Export TSC and CPU frequencies for use by the kernel or KEXTs␊ |
621 | ␉if (Platform.CPU.TSCFrequency != 0)␊ |
622 | ␉{␊ |
623 | ␉␉DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
624 | ␉}␊ |
625 | ␊ |
626 | ␉if (Platform.CPU.CPUFrequency != 0)␊ |
627 | ␉{␊ |
628 | ␉␉DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
629 | ␉}␊ |
630 | ␊ |
631 | ␉DT__AddProperty(efiPlatformNode, START_POWER_EV, sizeof(STARTUP_POWER_EVENTS), (EFI_UINT8 *) &STARTUP_POWER_EVENTS);␊ |
632 | ␊ |
633 | ␉DT__AddProperty(efiPlatformNode, DEV_COLORS, sizeof(DEV_COLORS), (EFI_UINT8 *) &DEV_COLORS);␊ |
634 | ␊ |
635 | ␉DT__AddProperty(efiPlatformNode, DEV_PATH_SUP, sizeof(DEVICE_PATHS_SUPPORTED), (EFI_UINT8 *) &DEVICE_PATHS_SUPPORTED);␊ |
636 | ␊ |
637 | ␉DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32 *)Platform.UUID);␊ |
638 | ␊ |
639 | ␉// Export SystemSerialNumber if present␊ |
640 | ␉if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
641 | ␉{␊ |
642 | ␉␉DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
643 | ␉}␊ |
644 | ␊ |
645 | ␉// Export Model if present␊ |
646 | ␉if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
647 | ␉{␊ |
648 | ␉␉DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
649 | ␉}␊ |
650 | ␊ |
651 | ␉// Fill /efi/device-properties node.␊ |
652 | ␉setupDeviceProperties(node);␊ |
653 | }␊ |
654 | ␊ |
655 | /*␊ |
656 | * Must be called AFTER getSmbios␊ |
657 | */␊ |
658 | void setupBoardId()␊ |
659 | {␊ |
660 | ␉Node *node;␊ |
661 | ␉node = DT__FindNode("/", false);␊ |
662 | ␉if (node == 0)␊ |
663 | ␉{␊ |
664 | ␉␉stop("Couldn't get root '/' node");␊ |
665 | ␉}␊ |
666 | ␉const char *boardid = getStringForKey("SMboardproduct", &bootInfo->smbiosConfig); // SMboardserial␊ |
667 | ␉if (boardid)␊ |
668 | ␉{␊ |
669 | ␉␉DT__AddProperty(node, BOARDID_PROP, strlen(boardid)+1, (EFI_CHAR16 *)boardid);␊ |
670 | ␉}␊ |
671 | }␊ |
672 | ␊ |
673 | /*␊ |
674 | * Populate the chosen node␊ |
675 | */␊ |
676 | void setupChosenNode()␊ |
677 | {␊ |
678 | ␉Node *chosenNode;␊ |
679 | ␉chosenNode = DT__FindNode("/chosen", false);␊ |
680 | ␉unsigned long adler32 = 0;␊ |
681 | ␊ |
682 | ␉if (chosenNode == NULL)␊ |
683 | ␉{␊ |
684 | ␉␉stop("setupChosenNode: Couldn't get '/chosen' node");␊ |
685 | ␉}␊ |
686 | ␊ |
687 | ␉// Only accept a UUID with the correct length.␊ |
688 | ␉if (strlen(gBootUUIDString) == 36)␊ |
689 | ␉{␊ |
690 | ␉␉DT__AddProperty(chosenNode, "boot-uuid", 37, gBootUUIDString);␊ |
691 | ␉}␊ |
692 | ␊ |
693 | ␉DT__AddProperty(chosenNode, "boot-args", sizeof(bootArgs->CommandLine), (EFI_UINT8 *)bootArgs->CommandLine);␊ |
694 | ␊ |
695 | ␉// Adding the default kernel name (mach_kernel) for kextcache.␊ |
696 | ␉DT__AddProperty(chosenNode, "boot-file", sizeof(bootInfo->bootFile), bootInfo->bootFile);␊ |
697 | ␊ |
698 | ␉DT__AddProperty(chosenNode, "boot-file-path", sizeof(BOOT_FILE_PATH), (EFI_UINT8 *) &BOOT_FILE_PATH);␊ |
699 | ␊ |
700 | ␉// Adding the root path for kextcache.␊ |
701 | ␉DT__AddProperty(chosenNode, "boot-device-path", sizeof(BOOT_DEVICE_PATH), (EFI_UINT8 *) &BOOT_DEVICE_PATH);␊ |
702 | ␊ |
703 | ␉DT__AddProperty(chosenNode, "boot-kernelcache-adler32", sizeof(unsigned long), &adler32);␊ |
704 | ␊ |
705 | ␉DT__AddProperty(chosenNode, MACHINE_SIG_PROP, sizeof(Platform.HWSignature), (EFI_UINT32 *)&Platform.HWSignature);␊ |
706 | ␊ |
707 | ␉if ( MacOSVerCurrent >= MacOSVer2Int("10.10") ) // Yosemite+␊ |
708 | ␉{␊ |
709 | ␉␉//␊ |
710 | ␉␉// Pike R. Alpha - 12 October 2014␊ |
711 | ␉␉//␊ |
712 | ␉␉UInt8 index = 0;␊ |
713 | ␉␉EFI_UINT16 PMTimerValue = 0, PMRepeatCount = 0xffff;␊ |
714 | ␊ |
715 | #if RANDOMSEED␊ |
716 | ␉␉EFI_UINT32 randomValue = 0, cpuTick = 0;␊ |
717 | ␉␉EFI_UINT32 ecx = 0, edx = 0, esi = 0, edi = 0;␊ |
718 | #else␊ |
719 | ␉␉EFI_UINT32 randomValue, tempValue, cpuTick;␊ |
720 | ␉␉EFI_UINT32 ecx, esi, edi = 0;␊ |
721 | ␉␉EFI_UINT64 rcx, rdx, rsi, rdi;␊ |
722 | ␊ |
723 | ␉␉randomValue = tempValue = ecx = esi = edi = 0;␉␉␉␉␉// xor␉␉%ecx,␉%ecx␊ |
724 | ␉␉cpuTick = rcx = rdx = rsi = rdi = 0;␊ |
725 | #endif␊ |
726 | ␉␉// LEAF_1 - Feature Information (Function 01h).␊ |
727 | ␉␉if (Platform.CPU.CPUID[CPUID_1][2] & 0x40000000)␉␉␉␉// Checking ecx:bit-30␊ |
728 | ␉␉{␊ |
729 | ␉␉␉//␊ |
730 | ␉␉␉// i5/i7 Ivy Bridge and Haswell processors with RDRAND support.␊ |
731 | ␉␉␉//␊ |
732 | ␉␉␉EFI_UINT32 seedBuffer[16] = {0};␊ |
733 | ␉␉␉//␊ |
734 | ␉␉␉// Main loop to get 16 dwords (four bytes each).␊ |
735 | ␉␉␉//␊ |
736 | ␉␉␉for (index = 0; index < 16; index++)␉␉␉␉␉// 0x17e12:␊ |
737 | ␉␉␉{␊ |
738 | ␉␉␉␉randomValue = computeRand();␉␉␉␉␉// callq␉0x18e20␊ |
739 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉␉␉// callq␉0x121a7␊ |
740 | ␉␉␉␉randomValue = (randomValue ^ cpuTick);␉␉␉␉// xor␉␉%rdi,␉%rax␊ |
741 | ␉␉␉␉seedBuffer[index] = randomValue;␉␉␉␉// mov␉␉%rax,(%r15,%rsi,8)␊ |
742 | ␉␉␉}␉␉␉␉␉␉␉␉␉// jb␉␉0x17e12␊ |
743 | ␊ |
744 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT32 *) &seedBuffer);␊ |
745 | ␉␉}␊ |
746 | ␉␉else␊ |
747 | ␉␉{␊ |
748 | ␉␉␉//␊ |
749 | ␉␉␉// All other processors without RDRAND support.␊ |
750 | ␉␉␉//␊ |
751 | ␉␉␉EFI_UINT8 seedBuffer[64] = {0};␊ |
752 | ␉␉␉//␊ |
753 | ␉␉␉// Main loop to get the 64 bytes.␊ |
754 | ␉␉␉//␊ |
755 | ␉␉␉do␉␉␉␉␉␉␉␉␉// 0x17e55:␊ |
756 | ␉␉␉{␊ |
757 | ␉␉␉␉//␊ |
758 | ␉␉␉␉// FIXME: PM Timer is usually @ 0x408, but its position is relocatable␊ |
759 | ␉␉␉␉// via PCI-to-ISA bridge. The location is reported in ACPI FADT,␊ |
760 | ␉␉␉␉// PM Timer Block address - zenith432␊ |
761 | ␉␉␉␉//␊ |
762 | ␉␉␉␉PMTimerValue = inw(0x408);␉␉␉␉␉// in␉␉(%dx),␉%ax␊ |
763 | ␉␉␉␉esi = PMTimerValue;␉␉␉␉␉␉// movzwl␉%ax,␉%esi␊ |
764 | ␊ |
765 | ␉␉␉␉if (esi < ecx)␉␉␉␉␉␉␉// cmp␉␉%ecx,␉%esi␊ |
766 | ␉␉␉␉{␊ |
767 | ␉␉␉␉␉/*␊ |
768 | ␉␉␉␉␉ * This is a workaround to prevent an infinite loop␊ |
769 | ␉␉␉␉␉ * if PMTimer is not at port 0x408 - zenith432␊ |
770 | ␉␉␉␉␉ */␊ |
771 | ␉␉␉␉␉if (PMRepeatCount)␊ |
772 | ␉␉␉␉␉{␊ |
773 | ␉␉␉␉␉␉--PMRepeatCount;␊ |
774 | ␉␉␉␉␉␉continue;␉␉␉␉␉␉// jb␉␉0x17e55␉␉(retry)␊ |
775 | ␉␉␉␉␉}␊ |
776 | ␉␉␉␉}␊ |
777 | ␉␉␉␉else␊ |
778 | ␉␉␉␉{␊ |
779 | ␉␉␉␉␉PMRepeatCount = 0xffff;␊ |
780 | ␉␉␉␉}␊ |
781 | ␊ |
782 | ␉␉␉␉cpuTick = (EFI_UINT32) getCPUTick();␉␉␉␉// callq␉0x121a7␊ |
783 | //␉␉␉␉printf("value: 0x%x\n", getCPUTick());␊ |
784 | ␊ |
785 | #if RANDOMSEED␊ |
786 | ␉␉␉␉ecx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
787 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
788 | ␉␉␉␉edx = (cpuTick >> 0x10);␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
789 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
790 | ␉␉␉␉edi = esi;␉␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
791 | ␉␉␉␉edi = (edi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
792 | ␉␉␉␉edi = (edi ^ ecx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
793 | ␉␉␉␉edi = (edi ^ edx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
794 | ␊ |
795 | ␉␉␉␉seedBuffer[index] = (edi & 0xff);␊ |
796 | #else␊ |
797 | ␉␉␉␉rcx = (cpuTick >> 8);␉␉␉␉␉␉// mov␉␉%rax,␉%rcx␊ |
798 | ␉␉␉␉// shr␉␉$0x8,␉%rcx␊ |
799 | ␉␉␉␉rdx = (cpuTick >> 0x10);␉␉␉␉␉// mov␉␉%rax,␉%rdx␊ |
800 | ␉␉␉␉// shr␉␉$0x10,␉%rdx␊ |
801 | ␉␉␉␉/*␊ |
802 | ␉␉␉␉ * Note: In x86 assembly, rXX is upper part of eXX register.␊ |
803 | ␉␉␉␉ * In C they're different variables.␊ |
804 | ␉␉␉␉ * The code is identical with or without RANDOMSEED. - zenith432␊ |
805 | ␉␉␉␉ */␊ |
806 | ␉␉␉␉rdi = rsi = esi;␉␉␉␉␉␉// mov␉␉%rsi,␉%rdi␊ |
807 | ␉␉␉␉rdi = (rdi ^ cpuTick);␉␉␉␉␉␉// xor␉␉%rax,␉%rdi␊ |
808 | ␉␉␉␉rdi = (rdi ^ rcx);␉␉␉␉␉␉// xor␉␉%rcx,␉%rdi␊ |
809 | ␉␉␉␉rdi = (rdi ^ rdx);␉␉␉␉␉␉// xor␉␉%rdx,␉%rdi␊ |
810 | ␉␉␉␉edi = (EFI_UINT32) rdi;␊ |
811 | ␊ |
812 | ␉␉␉␉seedBuffer[index] = (rdi & 0xff);␉␉␉␉// mov␉␉%dil,␉(%r15,%r12,1)␊ |
813 | #endif␊ |
814 | ␉␉␉␉edi = (edi & 0x2f);␉␉␉␉␉␉// and␉␉$0x2f,␉%edi␊ |
815 | ␉␉␉␉edi = (edi + esi);␉␉␉␉␉␉// add␉␉%esi,␉%edi␊ |
816 | ␉␉␉␉index++;␉␉␉␉␉␉␉// inc␉␉r12␊ |
817 | ␉␉␉␉ecx = (edi & 0xffff);␉␉␉␉␉␉// movzwl␉%di,␉%ecx␊ |
818 | ␊ |
819 | ␉␉␉} while (index < 64);␉␉␉␉␉␉␉// cmp␉␉%r14d,␉%r12d␊ |
820 | ␉␉␉// jne␉␉0x17e55␉␉(next)␊ |
821 | ␊ |
822 | ␉␉␉DT__AddProperty(chosenNode, "random-seed", sizeof(seedBuffer), (EFI_UINT8 *) &seedBuffer);␊ |
823 | ␊ |
824 | ␉␉}␊ |
825 | ␉}␊ |
826 | ␊ |
827 | ␉// Micky1979 : MIMIC booter entry for El Capitan␊ |
828 | ␉if ( MacOSVerCurrent >= MacOSVer2Int("10.11") ) // El Capitan␊ |
829 | ␉{␊ |
830 | ␊ |
831 | ␉␉verbose("Adding booter spec to the Platform Expert \n");␊ |
832 | ␊ |
833 | ␉␉// booter-build-time (Fri Apr 14 16:21:16 PDT 2017) 10.12.5␊ |
834 | ␉␉DT__AddProperty(chosenNode, "booter-build-time", sizeof(I386BOOT_BUILDDATE), I386BOOT_BUILDDATE);␊ |
835 | ␊ |
836 | ␉␉// booter-name␊ |
837 | ␉␉DT__AddProperty(chosenNode, "booter-name", sizeof("Chameleon"), "Chameleon");␊ |
838 | ␊ |
839 | ␉␉// booter-version (version:324.50.13) 10.12.5␊ |
840 | ␉␉DT__AddProperty(chosenNode, "booter-version", sizeof(I386BOOT_CHAMELEONREVISION), I386BOOT_CHAMELEONREVISION);␊ |
841 | ␉}␊ |
842 | }␊ |
843 | ␊ |
844 | /*␊ |
845 | * Load the smbios.plist override config file if any␊ |
846 | */␊ |
847 | static void setupSmbiosConfigFile(const char *filename)␊ |
848 | {␊ |
849 | ␉char␉␉dirSpecSMBIOS[128];␊ |
850 | ␉const char␉*override_pathname = NULL;␊ |
851 | ␉int␉␉len = 0, err = 0;␊ |
852 | ␉extern void scan_mem();␊ |
853 | ␊ |
854 | ␉// Take in account user overriding␊ |
855 | ␉if (getValueForKey(kSMBIOSKey, &override_pathname, &len, &bootInfo->chameleonConfig) && len > 0)␊ |
856 | ␉{␊ |
857 | ␉␉// Specify a path to a file, e.g. SMBIOS=/Extra/macProXY.plist␊ |
858 | ␉␉strcpy(dirSpecSMBIOS, override_pathname);␊ |
859 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
860 | ␉}␊ |
861 | ␉else␊ |
862 | ␉{␊ |
863 | ␉␉// Check selected volume's Extra.␊ |
864 | ␉␉sprintf(dirSpecSMBIOS, "/Extra/%s", filename);␊ |
865 | ␉␉err = loadConfigFile(dirSpecSMBIOS, &bootInfo->smbiosConfig);␊ |
866 | ␉}␊ |
867 | ␊ |
868 | ␉if (err)␊ |
869 | ␉{␊ |
870 | ␉␉verbose("No SMBIOS replacement found.\n");␊ |
871 | ␉}␊ |
872 | ␊ |
873 | ␉// get a chance to scan mem dynamically if user asks for it while having the config options␊ |
874 | ␉// loaded as well, as opposed to when it was in scan_platform(); also load the orig. smbios␊ |
875 | ␉// so that we can access dmi info, without patching the smbios yet.␊ |
876 | ␉scan_mem(); ␊ |
877 | }␊ |
878 | ␊ |
879 | /*␊ |
880 | * Installs all the needed configuration table entries␊ |
881 | */␊ |
882 | static void setupEfiConfigurationTable()␊ |
883 | {␊ |
884 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
885 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
886 | ␊ |
887 | ␉setupBoardId(); //need to be called after getSmbios␊ |
888 | ␊ |
889 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
890 | ␉setupAcpi();␊ |
891 | ␊ |
892 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
893 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
894 | ␉{␊ |
895 | ␉␉gST32->Hdr.CRC32 = 0;␊ |
896 | ␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊ |
897 | ␉}␊ |
898 | ␉else␊ |
899 | ␉{␊ |
900 | ␉␉gST64->Hdr.CRC32 = 0;␊ |
901 | ␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊ |
902 | ␉}␊ |
903 | ␊ |
904 | ␉// Setup the chosen node␊ |
905 | ␉setupChosenNode();␊ |
906 | }␊ |
907 | ␊ |
908 | void saveOriginalSMBIOS(void)␊ |
909 | {␊ |
910 | ␉Node *node;␊ |
911 | ␉SMBEntryPoint *origeps;␊ |
912 | ␉void *tableAddress;␊ |
913 | ␊ |
914 | ␉node = DT__FindNode("/efi/platform", false);␊ |
915 | ␉if (!node)␊ |
916 | ␉{␊ |
917 | ␉␉DBG("saveOriginalSMBIOS: '/efi/platform' node not found\n");␊ |
918 | ␉␉return;␊ |
919 | ␉}␊ |
920 | ␊ |
921 | ␉origeps = getSmbios(SMBIOS_ORIGINAL);␊ |
922 | ␉if (!origeps)␊ |
923 | ␉{␊ |
924 | ␉␉DBG("saveOriginalSMBIOS: original SMBIOS not found\n");␊ |
925 | ␉␉return;␊ |
926 | ␉}␊ |
927 | ␊ |
928 | ␉tableAddress = (void *)AllocateKernelMemory(origeps->dmi.tableLength);␊ |
929 | ␉if (!tableAddress)␊ |
930 | ␉{␊ |
931 | ␉␉DBG("saveOriginalSMBIOS: can not allocate memory for original SMBIOS\n");␊ |
932 | ␉␉return;␊ |
933 | ␉}␊ |
934 | ␊ |
935 | ␉memcpy(tableAddress, (void *)origeps->dmi.tableAddress, origeps->dmi.tableLength);␊ |
936 | ␉DT__AddProperty(node, "SMBIOS", origeps->dmi.tableLength, tableAddress);␊ |
937 | }␊ |
938 | ␊ |
939 | /*␊ |
940 | * Entrypoint from boot.c␊ |
941 | */␊ |
942 | void setupFakeEfi(void)␊ |
943 | {␊ |
944 | ␉// Generate efi device strings␊ |
945 | ␉setup_pci_devs(root_pci_dev);␊ |
946 | ␊ |
947 | ␉readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
948 | ␊ |
949 | ␉// load smbios.plist file if any␊ |
950 | ␉setupSmbiosConfigFile("smbios.plist");␊ |
951 | ␊ |
952 | ␉setupSMBIOSTable();␊ |
953 | ␊ |
954 | ␉// Initialize the base table␊ |
955 | ␉if (archCpuType == CPU_TYPE_I386)␊ |
956 | ␉{␊ |
957 | ␉␉setupEfiTables32();␊ |
958 | ␉}␊ |
959 | ␉else␊ |
960 | ␉{␊ |
961 | ␉␉setupEfiTables64();␊ |
962 | ␉}␊ |
963 | ␊ |
964 | ␉// Initialize the device tree␊ |
965 | ␉setupEfiDeviceTree();␊ |
966 | ␊ |
967 | ␉saveOriginalSMBIOS();␊ |
968 | ␊ |
969 | ␉// Add configuration table entries to both the services table and the device tree␊ |
970 | ␉setupEfiConfigurationTable();␊ |
971 | }␊ |
972 | |