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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 "dsdt_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();␊
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.h */␊
288/* Modified to wrap Data4 array init with {} */␊
289#define EFI_SMBIOS_TABLE_GUID \␊
290 { \␊
291 0xeb9d2d31, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} \␊
292 }␊
293␊
294/* From Foundation/Efi/Guid/Smbios/SmBios.c */␊
295EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊
296␊
297#define SMBIOS_RANGE_START 0x000F0000␊
298#define SMBIOS_RANGE_END 0x000FFFFF␊
299␊
300/* '_SM_' in little endian: */␊
301#define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊
302␊
303#define EFI_ACPI_TABLE_GUID \␊
304 { \␊
305 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊
306 }␊
307␊
308#define EFI_ACPI_20_TABLE_GUID \␊
309 { \␊
310 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊
311 }␊
312␊
313EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊
314EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊
315␊
316␊
317/*==========================================================================␊
318 * Fake EFI implementation␊
319 */␊
320␊
321/* These should be const but DT__AddProperty takes char* */␊
322static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
323static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
324static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
325static const char const FIRMWARE_ABI_PROP_VALUE[] = "EFI64";␊
326static const char const SYSTEM_ID_PROP[] = "system-id";␊
327static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
328static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
329static const char const MODEL_PROP[] = "Model";␊
330␊
331␊
332/* Get an smbios option string option to convert to EFI_CHAR16 string */␊
333static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊
334{␊
335 const char * src= getStringForKey(key, &bootInfo->smbiosConfig);␊
336 EFI_CHAR16* dst = 0;␊
337 size_t i=0;␊
338␊
339 if (!key || !(*key) || !len || !src) return 0;␊
340␊
341 *len = strlen(src);␊
342 dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊
343 for (; i < (*len); i++) dst[i] = src[i];␊
344 dst[(*len)] = '\0';␊
345 *len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊
346 return dst;␊
347}␊
348␊
349#define DEBUG_SMBIOS 0␊
350␊
351/* Get the SystemID from the bios dmi info */␊
352static EFI_CHAR8* getSmbiosUUID()␊
353{␊
354␉struct SMBEntryPoint␉*smbios;␊
355␉struct DMIHeader␉*dmihdr;␊
356␉SMBByte␉␉␉*p;␊
357␉int␉␉␉i, found, isZero, isOnes;␊
358␉static EFI_CHAR8 uuid[UUID_LEN+1]="";␊
359␉␊
360␉smbios = getAddressOfSmbiosTable();␉/* checks for _SM_ anchor and table header checksum */␊
361␉if (memcmp( &smbios->dmi.anchor[0], "_DMI_", 5) != 0) {␊
362␉␉return 0;␊
363␉}␊
364#if DEBUG_SMBIOS␊
365␉verbose(">>> SMBIOSAddr=0x%08x\n", smbios);␊
366␉verbose(">>> DMI: addr=0x%08x, len=0x%d, count=%d\n", smbios->dmi.tableAddress, ␊
367␉␉smbios->dmi.tableLength, smbios->dmi.structureCount);␊
368#endif␊
369␉i = 0;␊
370␉found = 0;␊
371␉p = (SMBByte *) smbios->dmi.tableAddress;␊
372␉while (i < smbios->dmi.structureCount && p + 4 <= (SMBByte *)smbios->dmi.tableAddress + smbios->dmi.tableLength) {␊
373␉␉dmihdr = (struct DMIHeader *) p;␊
374#if DEBUG_SMBIOS␊
375␉␉verbose(">>>>>> DMI(%d): type=0x%02x, len=0x%d\n",i,dmihdr->type,dmihdr->length);␊
376#endif␊
377␉␉if (dmihdr->length < 4 || dmihdr->type == 127 /* EOT */) break;␊
378␉␉if (dmihdr->type == 1) ␉/* 3.3.2 System Information */␊
379␉␉{␉␊
380␉␉ if (dmihdr->length >= 0x19) found = 1;␊
381␉␉␉break;␊
382␉␉}␊
383␉␉p = p + dmihdr->length;␊
384␉␉while ((p - (SMBByte *)smbios->dmi.tableAddress + 1 < smbios->dmi.tableLength) && (p[0] != 0x00 || p[1] != 0x00)) ␊
385␉␉{␊
386␉␉␉p++;␊
387␉␉}␊
388␉␉p += 2;␊
389␉␉i++;␊
390␉}␊
391␊
392␉if (!found) return 0;␊
393␊
394␉verbose("Found SMBIOS System Information Table 1\n");␊
395␉p += 8;␊
396␊
397␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊
398␉␉if (p[i] != 0x00) isZero = 0;␊
399␉␉if (p[i] != 0xff) isOnes = 0;␊
400␉}␊
401␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊
402␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊
403␉␉return 0;␊
404␉}␊
405␊
406␉memcpy(uuid, p, UUID_LEN+1);␊
407␉uuid[UUID_LEN]=0;␊
408␉return uuid;␊
409}␊
410␊
411/* return a binary UUID value from the overriden SystemID and SMUUID if found, ␊
412 * or from the bios if not, or from a fixed value if no bios value is found ␊
413 */␊
414static EFI_CHAR8* getSystemID()␊
415{ // unable to determine UUID for host. Error: 35 fix␊
416␊
417 // Rek: new SMsystemid option conforming to smbios notation standards, this option should␊
418 // belong to smbios config only ...␊
419 const char * sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊
420 EFI_CHAR8* ret = getUUIDFromString(sysId);␊
421␊
422 if(!sysId || !ret) { // try bios dmi info UUID extraction ␊
423 ret = getSmbiosUUID();␊
424 sysId = getStringFromUUID(ret);␊
425 }␊
426 if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊
427 ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊
428␊
429 verbose("Customizing SystemID with : %s\n", sysId);␊
430 return ret;␊
431}␊
432␊
433void setupEfiDeviceTree(void)␊
434{␊
435 EFI_CHAR16* ret16=0;␊
436 EFI_CHAR8* ret=0;␊
437 size_t len=0;␊
438 Node *node;␊
439 const char *value;␊
440␊
441 node = DT__FindNode("/", false);␊
442 ␊
443 if (node == 0) stop("Couldn't get root node");␊
444 ␊
445 /* Export system-type only if it has been overrriden by the SystemType option */␊
446 Platform.Type = 1;␉␉/* Desktop */␊
447 if (getValueForKey(kSystemType, &value, &len, &bootInfo->bootConfig) && value != NULL) ␊
448 {␊
449 if (Platform.Type > 6) ␊
450␉verbose("Error: system-type must be 0..6. Defaulting to 1!\n");␊
451 else␊
452␉Platform.Type = (unsigned char) strtoul(value, NULL, 10);␊
453 verbose("Using system-type=0x%02x\n", Platform.Type);␊
454 DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊
455 }␊
456␊
457 /* We could also just do DT__FindNode("/efi/platform", true)␊
458 * But I think eventually we want to fill stuff in the efi node␊
459 * too so we might as well create it so we have a pointer for it too.␊
460 */␊
461 node = DT__AddChild(node, "efi");␊
462␊
463 DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊
464 DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_PROP_VALUE), (char*)FIRMWARE_ABI_PROP_VALUE);␊
465 DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊
466␊
467 /* TODO: Fill in other efi properties if necessary */␊
468␊
469 /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊
470 * is set up. That is, name and table properties */␊
471 Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊
472␊
473 /* The value of the table property is the 32-bit physical address for the RuntimeServices table.␊
474 * Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊
475 * for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊
476 * the only thing to use a non-malloc'd pointer for something in the DT␊
477 */␊
478 DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST->RuntimeServices);␊
479␊
480 /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊
481 * all of the configuration tables needed by various kernel extensions.␊
482 */␊
483 gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊
484␊
485 /* Now fill in the /efi/platform Node */␊
486 Node *efiPlatformNode = DT__AddChild(node, "platform");␊
487 ␊
488 /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊
489 * the value in the fsbFrequency global and not an malloc'd pointer␊
490 * because the DT_AddProperty function does not copy its args.␊
491 */␊
492 if(Platform.CPU.FSBFrequency != 0) ␊
493 DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊
494 ␊
495 /* Export TSC and CPU frequencies for use by the kernel or KEXTs */␊
496 if(Platform.CPU.TSCFrequency != 0) ␊
497 DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊
498␊
499 if(Platform.CPU.CPUFrequency != 0) ␊
500 DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊
501␊
502 /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊
503 if((ret=getSystemID()))␊
504 DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊
505␊
506 /* Export SystemSerialNumber if present */␊
507 if ((ret16=getSmbiosChar16("SMserial", &len)))␊
508 DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊
509␊
510 /* Export Model if present */␊
511 if ((ret16=getSmbiosChar16("SMproductname", &len)))␊
512 DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊
513␊
514 /* Fill /efi/device-properties node.␊
515 */␊
516 setupDeviceProperties(node);␊
517}␊
518␊
519/* Load the smbios.plist override config file if any */␊
520static void setupSmbiosConfigFile()␊
521{␊
522 const char * value = getStringForKey(kSMBIOS, &bootInfo->bootConfig);␊
523 if (!value) value = "/Extra/smbios.plist";␊
524 if (loadConfigFile(value, &bootInfo->smbiosConfig) == -1) {␊
525 verbose("No SMBIOS replacement found\n");␊
526 }␊
527}␊
528␊
529/* Installs all the needed configuration table entries */␊
530void setupEfiConfigurationTable()␊
531{␊
532 smbios_p = (EFI_PTR32)getSmbios();␊
533 addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊
534␊
535 // Setup ACPI with DSDT overrides (mackerintel's patch)␊
536 setupAcpi();␊
537 ␊
538 // We've obviously changed the count.. so fix up the CRC32␊
539 fixupEfiSystemTableCRC32(gST);␊
540}␊
541␊
542void setupEfiDevices(void)␊
543{␊
544␉setup_pci_devs(root_pci_dev);␊
545}␊
546␊
547/* Entrypoint from boot.c */␊
548void setupFakeEfi(void)␊
549{␊
550 // load smbios.plist file if any␊
551 setupSmbiosConfigFile();␊
552␉␊
553 // Generate efi device strings ␊
554␉setupEfiDevices();␊
555␉␊
556␉// Initialize the base table␊
557␉setupEfiTables();␊
558␉␊
559 // Initialize the device tree␊
560 setupEfiDeviceTree();␊
561␊
562 // Add configuration table entries to both the services table and the device tree␊
563 setupEfiConfigurationTable();␊
564}␊
565␊
566

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