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Root/trunk/i386/libsaio/fake_efi.c

1␊
2/*␊
3 * Copyright 2007 David F. Elliott. All rights reserved.␊
4 */␊
5␊
6#include "libsaio.h"␊
7#include "boot.h"␊
8#include "bootstruct.h"␊
9#include "efi.h"␊
10#include "acpi.h"␊
11#include "fake_efi.h"␊
12#include "efi_tables.h"␊
13#include "platform.h"␊
14#include "acpi_patcher.h"␊
15#include "smbios_patcher.h"␊
16#include "device_inject.h"␊
17#include "convert.h"␊
18#include "pci.h"␊
19#include "sl.h"␊
20␊
21extern struct SMBEntryPoint * getSmbios(int which); // now cached␊
22extern void setup_pci_devs(pci_dt_t *pci_dt);␊
23␊
24/*␊
25Modern Darwin kernels require some amount of EFI because Apple machines all␊
26have EFI. Modifying the kernel source to not require EFI is of course␊
27possible but would have to be maintained as a separate patch because it is␊
28unlikely that Apple wishes to add legacy support to their kernel.␊
29␊
30As you can see from the Apple-supplied code in bootstruct.c, it seems that␊
31the intention was clearly to modify this booter to provide EFI-like structures␊
32to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊
33makes a lot of sense from an engineering point of view as it means the kernel␊
34for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊
35DTK systems so long as the kernel checked to ensure the boot tables were␊
36filled in appropriately. Modern xnu requires a system table and a runtime␊
37services table and performs no checks whatsoever to ensure the pointers to␊
38these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊
39early on in the boot process if the system table pointer is zero.␊
40␊
41Even before that happens, the tsc_init function in modern xnu requires the FSB␊
42Frequency to be a property in the /efi/platform node of the device tree or else␊
43it panics the bootstrap process very early on.␊
44␊
45As of this writing, the current implementation found here is good enough␊
46to make the currently available xnu kernel boot without modification on a␊
47system with an appropriate processor. With a minor source modification to␊
48the tsc_init function to remove the explicit check for Core or Core 2␊
49processors the kernel can be made to boot on other processors so long as␊
50the code can be executed by the processor and the machine contains the␊
51necessary hardware.␊
52*/␊
53␊
54␊
55/*==========================================================================␊
56 * Utility function to make a device tree string from an EFI_GUID␊
57 */␊
58␊
59static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊
60{␊
61 char *string = malloc(37);␊
62 efi_guid_unparse_upper(pGuid, string);␊
63 return string;␊
64}␊
65␊
66␊
67/*==========================================================================␊
68 * Function to map 32 bit physical address to 64 bit virtual address␊
69 */␊
70static uint64_t ptov64(uint32_t addr)␊
71{␊
72 return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊
73}␊
74␊
75␊
76/*==========================================================================␊
77 * Fake EFI implementation␊
78 */␊
79␊
80/* Identify ourselves as the EFI firmware vendor */␊
81static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊
82static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊
83␊
84/* Default platform system_id (fix by IntVar) */␊
85static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF";//random value gen by uuidgen␊
86␊
87/* Just a ret instruction */␊
88static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊
89/* movl $0x80000003,%eax; ret */␊
90static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊
91␊
92␊
93/* We use the fake_efi_pages struct so that we only need to do one kernel␊
94 * memory allocation for all needed EFI data. Otherwise, small allocations␊
95 * like the FIRMWARE_VENDOR string would take up an entire page.␊
96 * NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊
97 * It is absolutely not intended to be publicly exposed anywhere␊
98 * We say pages (plural) although right now we are well within the 1 page size␊
99 * and probably will stay that way.␊
100 */␊
101struct fake_efi_pages␊
102{␊
103 EFI_SYSTEM_TABLE_64 efiSystemTable;␊
104 EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊
105 EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊
106 EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊
107 uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
108 uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
109};␊
110␊
111EFI_SYSTEM_TABLE_64 *gST = NULL;␊
112Node *gEfiConfigurationTableNode = NULL;␊
113␊
114extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊
115{␊
116 EFI_UINTN i = gST->NumberOfTableEntries;␊
117 /* We only do adds, not modifications and deletes like InstallConfigurationTable */␊
118 if(i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊
119 stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊
120␊
121 if(pGuid == NULL)␊
122 return EFI_INVALID_PARAMETER;␊
123␊
124 if(table != NULL)␊
125 {␊
126 ␉/* FIXME␊
127 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊
128 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊
129␊
130 ++gST->NumberOfTableEntries;␊
131␉␉ */␊
132 Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊
133␊
134 /* Use the pointer to the GUID we just stuffed into the system table */␊
135␉ ␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊
136␊
137 /* The "table" property is the 32-bit (in our implementation) physical address of the table */␊
138 ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊
139␊
140 /* Assume the alias pointer is a global or static piece of data */␊
141 if(alias != NULL)␊
142 DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊
143␊
144 return EFI_SUCCESS;␊
145 }␊
146 return EFI_UNSUPPORTED;␊
147}␊
148␊
149static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊
150{␊
151 efiSystemTable->Hdr.CRC32 = 0;␊
152 efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊
153}␊
154␊
155/*␊
156What we do here is simply allocate a fake EFI system table and a fake EFI␊
157runtime services table.␊
158␊
159Because we build against modern headers with kBootArgsRevision 4 we␊
160also take care to set efiMode = 32.␊
161*/␊
162void␊
163setupEfiTables(void)␊
164{␊
165 struct fake_efi_pages *fakeEfiPages= (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊
166␊
167 /* Zero out all the tables in case fields are added later */␊
168 bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊
169␊
170 /* --------------------------------------------------------------------␊
171 * Initialize some machine code that will return EFI_UNSUPPORTED for␊
172 * functions returning int and simply return for void functions.␊
173 */␊
174 memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊
175 memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊
176␊
177 /* -------------------------------------------------------------------- */␊
178 /* System table */␊
179 EFI_SYSTEM_TABLE_64 *efiSystemTable = gST = &fakeEfiPages->efiSystemTable;␊
180 efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊
181 efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊
182 efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊
183 efiSystemTable->Hdr.CRC32 = 0; /* Initialize to zero and then do CRC32 */␊
184 efiSystemTable->Hdr.Reserved = 0;␊
185␊
186 efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊
187 memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊
188 efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊
189␊
190 /* XXX: We may need to have basic implementations of ConIn/ConOut/StdErr */␊
191 /* The EFI spec states that all handles are invalid after boot services have been␊
192 * exited so we can probably get by with leaving the handles as zero. */␊
193 efiSystemTable->ConsoleInHandle = 0;␊
194 efiSystemTable->ConIn = 0;␊
195␊
196 efiSystemTable->ConsoleOutHandle = 0;␊
197 efiSystemTable->ConOut = 0;␊
198␊
199 efiSystemTable->StandardErrorHandle = 0;␊
200 efiSystemTable->StdErr = 0;␊
201␊
202 efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊
203 /* According to the EFI spec, BootServices aren't valid after the␊
204 * boot process is exited so we can probably do without it.␊
205 * Apple didn't provide a definition for it in pexpert/i386/efi.h␊
206 * so I'm guessing they don't use it.␊
207 */␊
208 efiSystemTable->BootServices = 0;␊
209␊
210 efiSystemTable->NumberOfTableEntries = 0;␊
211 efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊
212␊
213␊
214 /* We're done. Now CRC32 the thing so the kernel will accept it */␊
215 fixupEfiSystemTableCRC32(efiSystemTable);␊
216␊
217 /* -------------------------------------------------------------------- */␊
218 /* Runtime services */␊
219 EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊
220 efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊
221 efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊
222 efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊
223 efiRuntimeServices->Hdr.CRC32 = 0;␊
224 efiRuntimeServices->Hdr.Reserved = 0;␊
225␊
226 /* There are a number of function pointers in the efiRuntimeServices table.␊
227 * These are the Foundation (e.g. core) services and are expected to be present on␊
228 * all EFI-compliant machines. Some kernel extensions (notably AppleEFIRuntime)␊
229 * will call these without checking to see if they are null.␊
230 *␊
231 * We don't really feel like doing an EFI implementation in the bootloader␊
232 * but it is nice if we can at least prevent a complete crash by␊
233 * at least providing some sort of implementation until one can be provided␊
234 * nicely in a kext.␊
235 */␊
236 void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊
237 void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊
238 efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
239 efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
240 efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
241 efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
242 efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊
243 efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊
244 efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
245 efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊
246 efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
247 efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊
248 efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊
249␊
250 /* We're done. Now CRC32 the thing so the kernel will accept it */␊
251 efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊
252␊
253␊
254 /* -------------------------------------------------------------------- */␊
255 /* Finish filling in the rest of the boot args that we need. */␊
256 bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊
257 bootArgs->efiMode = kBootArgsEfiMode64;␊
258␊
259 /* The bootArgs structure as a whole is bzero'd so we don't need to fill in␊
260 * things like efiRuntimeServices* and what not.␊
261 *␊
262 * In fact, the only code that seems to use that is the hibernate code so it␊
263 * knows not to save the pages. It even checks to make sure its nonzero.␊
264 */␊
265}␊
266␊
267/*␊
268In addition to the EFI tables there is also the EFI device tree node.␊
269In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊
270the tsc_init function will panic very early on in kernel startup, before␊
271the console is available.␊
272*/␊
273␊
274/*==========================================================================␊
275 * FSB Frequency detection␊
276 */␊
277␊
278/* These should be const but DT__AddProperty takes char* */␊
279static const char const TSC_Frequency_prop[] = "TSCFrequency";␊
280static const char const FSB_Frequency_prop[] = "FSBFrequency";␊
281static const char const CPU_Frequency_prop[] = "CPUFrequency";␊
282␊
283/*==========================================================================␊
284 * SMBIOS␊
285 */␊
286␊
287/* From Foundation/Efi/Guid/Smbios/SmBios.c */␊
288EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊
289␊
290#define SMBIOS_RANGE_START 0x000F0000␊
291#define SMBIOS_RANGE_END 0x000FFFFF␊
292␊
293/* '_SM_' in little endian: */␊
294#define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊
295␊
296#define EFI_ACPI_TABLE_GUID \␊
297 { \␊
298 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊
299 }␊
300␊
301#define EFI_ACPI_20_TABLE_GUID \␊
302 { \␊
303 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊
304 }␊
305␊
306EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊
307EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊
308␊
309␊
310/*==========================================================================␊
311 * Fake EFI implementation␊
312 */␊
313␊
314/* These should be const but DT__AddProperty takes char* */␊
315static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
316static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
317static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
318static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32";␊
319static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64";␊
320␊
321static const char const SYSTEM_ID_PROP[] = "system-id";␊
322static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
323static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
324static const char const MODEL_PROP[] = "Model";␊
325␊
326␊
327/* Get an smbios option string option to convert to EFI_CHAR16 string */␊
328static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊
329{␊
330 const char * src= getStringForKey(key, &bootInfo->smbiosConfig);␊
331 EFI_CHAR16* dst = 0;␊
332 size_t i=0;␊
333␊
334 if (!key || !(*key) || !len || !src) return 0;␊
335␊
336 *len = strlen(src);␊
337 dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊
338 for (; i < (*len); i++) dst[i] = src[i];␊
339 dst[(*len)] = '\0';␊
340 *len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊
341 return dst;␊
342}␊
343␊
344/* Get the SystemID from the bios dmi info */␊
345static EFI_CHAR8* getSmbiosUUID()␊
346{␊
347␉struct SMBEntryPoint␉*smbios;␊
348␉SMBByte␉␉␉*p;␊
349␉int␉␉␉i, isZero, isOnes;␊
350␉static EFI_CHAR8 uuid[UUID_LEN];␊
351␊
352␉smbios = getSmbios(SMBIOS_PATCHED);␉/* checks for _SM_ anchor and table header checksum */␊
353␉if (smbios==NULL) return 0; // getSmbios() return a non null value if smbios is found␊
354␊
355␉p = (SMBByte*) FindFirstDmiTableOfType(1, 0x19); /* Type 1: (3.3.2) System Information */␊
356␉if (p==NULL) return NULL;␊
357 ␊
358␉verbose("Found SMBIOS System Information Table 1\n");␊
359␉p += 8;␊
360␊
361␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊
362␉␉if (p[i] != 0x00) isZero = 0;␊
363␉␉if (p[i] != 0xff) isOnes = 0;␊
364␉}␊
365␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊
366␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊
367␉␉return 0;␊
368␉}␊
369␊
370␉memcpy(uuid, p, UUID_LEN);␊
371␉return uuid;␊
372}␊
373␊
374/* return a binary UUID value from the overriden SystemID and SMUUID if found, ␊
375 * or from the bios if not, or from a fixed value if no bios value is found ␊
376 */␊
377static EFI_CHAR8* getSystemID()␊
378{ // unable to determine UUID for host. Error: 35 fix␊
379␊
380 // Rek: new SMsystemid option conforming to smbios notation standards, this option should␊
381 // belong to smbios config only ...␊
382 const char * sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊
383 EFI_CHAR8* ret = getUUIDFromString(sysId);␊
384␊
385 if(!sysId || !ret) { // try bios dmi info UUID extraction ␊
386 ret = getSmbiosUUID();␊
387 sysId = 0;␊
388 }␊
389 if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊
390 ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊
391␊
392 verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊
393 return ret;␊
394}␊
395␊
396// must be called AFTER setup Acpi because we need to take care of correct facp content to reflect in ioregs␊
397void setupSystemType()␊
398{␊
399 Node *node = DT__FindNode("/", false);␊
400 if (node == 0) stop("Couldn't get root node");␊
401 // we need to write this property after facp parsing␊
402 /* Export system-type only if it has been overrriden by the SystemType option */␊
403 DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊
404}␊
405␊
406void setupEfiDeviceTree(void)␊
407{␊
408 EFI_CHAR16* ret16=0;␊
409 EFI_CHAR8* ret=0;␊
410 size_t len=0;␊
411 Node *node;␊
412␊
413 node = DT__FindNode("/", false);␊
414 ␊
415 if (node == 0) stop("Couldn't get root node");␊
416 ␊
417 /* We could also just do DT__FindNode("/efi/platform", true)␊
418 * But I think eventually we want to fill stuff in the efi node␊
419 * too so we might as well create it so we have a pointer for it too.␊
420 */␊
421 node = DT__AddChild(node, "efi");␊
422␊
423 DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊
424␉␊
425␉if(platformCPUFeature(CPU_FEATURE_EM64T))␊
426␉{␊
427␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊
428␉}␊
429␉else␊
430␉{␊
431␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊
432␉}␊
433␊
434 DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊
435␊
436 /* TODO: Fill in other efi properties if necessary */␊
437␊
438 /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊
439 * is set up. That is, name and table properties */␊
440 Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊
441␊
442 /* The value of the table property is the 32-bit physical address for the RuntimeServices table.␊
443 * Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊
444 * for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊
445 * the only thing to use a non-malloc'd pointer for something in the DT␊
446 */␊
447 DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST->RuntimeServices);␊
448␊
449 /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊
450 * all of the configuration tables needed by various kernel extensions.␊
451 */␊
452 gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊
453␊
454 /* Now fill in the /efi/platform Node */␊
455 Node *efiPlatformNode = DT__AddChild(node, "platform");␊
456 ␊
457 /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊
458 * the value in the fsbFrequency global and not an malloc'd pointer␊
459 * because the DT_AddProperty function does not copy its args.␊
460 */␊
461 if(Platform.CPU.FSBFrequency != 0) ␊
462 DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊
463 ␊
464 /* Export TSC and CPU frequencies for use by the kernel or KEXTs */␊
465 if(Platform.CPU.TSCFrequency != 0) ␊
466 DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊
467␊
468 if(Platform.CPU.CPUFrequency != 0) ␊
469 DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊
470␊
471 /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊
472 if((ret=getSystemID()))␊
473 DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊
474␊
475 /* Export SystemSerialNumber if present */␊
476 if ((ret16=getSmbiosChar16("SMserial", &len)))␊
477 DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊
478␊
479 /* Export Model if present */␊
480 if ((ret16=getSmbiosChar16("SMproductname", &len)))␊
481 DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊
482␊
483 /* Fill /efi/device-properties node.␊
484 */␊
485 setupDeviceProperties(node);␊
486}␊
487␊
488/* Load the smbios.plist override config file if any */␊
489static void setupSmbiosConfigFile()␊
490{␊
491 const char * value = getStringForKey(kSMBIOS, &bootInfo->bootConfig);␊
492 extern void scan_mem();␊
493␊
494 if (!value) value = "/Extra/smbios.plist";␊
495 if (loadConfigFile(value, &bootInfo->smbiosConfig) == -1) {␊
496 verbose("No SMBIOS replacement found\n");␊
497 }␊
498␊
499 // get a chance to scan mem dynamically if user asks for it while having the config options loaded as well␊
500 // as opposed to when it was in scan_platform(), also load the orig. smbios so that we can access dmi info without␊
501 // patching the smbios yet␊
502 getSmbios(SMBIOS_ORIGINAL);␊
503 scan_mem(); ␊
504 smbios_p = (EFI_PTR32) getSmbios(SMBIOS_PATCHED);␉// process smbios asap␊
505}␊
506␊
507/* Installs all the needed configuration table entries */␊
508static void setupEfiConfigurationTable()␊
509{␊
510 smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊
511 addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊
512␊
513 // Setup ACPI with DSDT overrides (mackerintel's patch)␊
514 setupAcpi();␊
515 ␊
516 // We've obviously changed the count.. so fix up the CRC32␊
517 fixupEfiSystemTableCRC32(gST);␊
518}␊
519␊
520␊
521/* Entrypoint from boot.c */␊
522void setupFakeEfi(void)␊
523{␊
524␉// Generate efi device strings ␊
525␉setup_pci_devs(root_pci_dev);␊
526␉␊
527␉// load smbios.plist file if any␊
528␉setupSmbiosConfigFile();␊
529␉␊
530␉// Initialize the base table␊
531␉setupEfiTables();␊
532␉␊
533␉// Initialize the device tree␊
534␉setupEfiDeviceTree();␊
535␉␊
536␉// Add configuration table entries to both the services table and the device tree␊
537␉setupEfiConfigurationTable();␊
538}␊
539␊
540

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