Chameleon

Chameleon Svn Source Tree

Root/branches/rekursor/i386/libsaio/fake_efi.c

1␊
2/*␊
3 * Copyright 2007 David F. Elliott. All rights reserved.␊
4 */␊
5␊
6#include "libsaio.h"␊
7#include "bootstruct.h" /* for bootArgs */␊
8#include "efi.h"␊
9#include "acpi.h"␊
10#include "fake_efi.h"␊
11#include "efi_tables.h"␊
12#include "freq_detect.h"␊
13#include "dsdt_patcher.h"␊
14#include "smbios_patcher.h"␊
15#include "device_inject.h"␊
16#include "pci.h"␊
17#include "sl.h"␊
18#include "SMBIOS.h"␊
19␊
20extern struct SMBEntryPoint * getSmbios();␊
21extern void setup_pci_devs(pci_dt_t *pci_dt);␊
22␊
23/*␊
24Modern Darwin kernels require some amount of EFI because Apple machines all␊
25have EFI. Modifying the kernel source to not require EFI is of course␊
26possible but would have to be maintained as a separate patch because it is␊
27unlikely that Apple wishes to add legacy support to their kernel.␊
28␊
29As you can see from the Apple-supplied code in bootstruct.c, it seems that␊
30the intention was clearly to modify this booter to provide EFI-like structures␊
31to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊
32makes a lot of sense from an engineering point of view as it means the kernel␊
33for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊
34DTK systems so long as the kernel checked to ensure the boot tables were␊
35filled in appropriately. Modern xnu requires a system table and a runtime␊
36services table and performs no checks whatsoever to ensure the pointers to␊
37these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊
38early on in the boot process if the system table pointer is zero.␊
39␊
40Even before that happens, the tsc_init function in modern xnu requires the FSB␊
41Frequency to be a property in the /efi/platform node of the device tree or else␊
42it panics the bootstrap process very early on.␊
43␊
44As of this writing, the current implementation found here is good enough␊
45to make the currently available xnu kernel boot without modification on a␊
46system with an appropriate processor. With a minor source modification to␊
47the tsc_init function to remove the explicit check for Core or Core 2␊
48processors the kernel can be made to boot on other processors so long as␊
49the code can be executed by the processor and the machine contains the␊
50necessary hardware.␊
51*/␊
52␊
53␊
54/*==========================================================================␊
55 * Utility function to make a device tree string from an EFI_GUID␊
56 */␊
57␊
58static inline char * mallocStringForGuid(EFI_GUID const *pGuid)␊
59{␊
60 char *string = MALLOC(37);␊
61 efi_guid_unparse_upper(pGuid, string);␊
62 return string;␊
63}␊
64␊
65␊
66/*==========================================================================␊
67 * Function to map 32 bit physical address to 64 bit virtual address␊
68 */␊
69static uint64_t ptov64(uint32_t addr)␊
70{␊
71 return ((uint64_t)addr | 0xFFFFFF8000000000ULL);␊
72}␊
73␊
74␊
75/*==========================================================================␊
76 * Fake EFI implementation␊
77 */␊
78␊
79/* Identify ourselves as the EFI firmware vendor */␊
80static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊
81static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊
82␊
83/* Default platform system_id (fix by IntVar) */␊
84static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF";//random value gen by uuidgen␊
85␊
86/* Just a ret instruction */␊
87static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊
88/* movl $0x80000003,%eax; ret */␊
89static uint8_t const UNSUPPORTEDRET_INSTRUCTIONS[] = {0xb8, 0x03, 0x00, 0x00, 0x80, 0xc3};␊
90␊
91␊
92/* We use the fake_efi_pages struct so that we only need to do one kernel␊
93 * memory allocation for all needed EFI data. Otherwise, small allocations␊
94 * like the FIRMWARE_VENDOR string would take up an entire page.␊
95 * NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊
96 * It is absolutely not intended to be publicly exposed anywhere␊
97 * We say pages (plural) although right now we are well within the 1 page size␊
98 * and probably will stay that way.␊
99 */␊
100struct fake_efi_pages␊
101{␊
102 EFI_SYSTEM_TABLE_64 efiSystemTable;␊
103 EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊
104 EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊
105 EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊
106 uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
107 uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
108};␊
109␊
110EFI_SYSTEM_TABLE_64 *gST = NULL;␊
111Node *gEfiConfigurationTableNode = NULL;␊
112␊
113extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊
114{␊
115 EFI_UINTN i = gST->NumberOfTableEntries;␊
116 /* We only do adds, not modifications and deletes like InstallConfigurationTable */␊
117 if(i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊
118 stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊
119␊
120 if(pGuid == NULL)␊
121 return EFI_INVALID_PARAMETER;␊
122␊
123 if(table != NULL)␊
124 {␊
125 ␉/* FIXME␊
126 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊
127 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊
128␊
129 ++gST->NumberOfTableEntries;␊
130␉␉ */␊
131 Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊
132␊
133 /* Use the pointer to the GUID we just stuffed into the system table */␊
134␉ ␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊
135␊
136 /* The "table" property is the 32-bit (in our implementation) physical address of the table */␊
137 ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊
138␊
139 /* Assume the alias pointer is a global or static piece of data */␊
140 if(alias != NULL)␊
141 DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊
142␊
143 return EFI_SUCCESS;␊
144 }␊
145 return EFI_UNSUPPORTED;␊
146}␊
147␊
148static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊
149{␊
150 efiSystemTable->Hdr.CRC32 = 0;␊
151 efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊
152}␊
153␊
154/*␊
155What we do here is simply allocate a fake EFI system table and a fake EFI␊
156runtime services table.␊
157␊
158Because we build against modern headers with kBootArgsRevision 4 we␊
159also take care to set efiMode = 32.␊
160*/␊
161void␊
162setupEfiTables(void)␊
163{␊
164 struct fake_efi_pages *fakeEfiPages= (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊
165␊
166 /* Zero out all the tables in case fields are added later */␊
167 bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊
168␊
169 /* --------------------------------------------------------------------␊
170 * Initialize some machine code that will return EFI_UNSUPPORTED for␊
171 * functions returning int and simply return for void functions.␊
172 */␊
173 memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊
174 memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊
175␊
176 /* -------------------------------------------------------------------- */␊
177 /* System table */␊
178 EFI_SYSTEM_TABLE_64 *efiSystemTable = gST = &fakeEfiPages->efiSystemTable;␊
179 efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊
180 efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊
181 efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊
182 efiSystemTable->Hdr.CRC32 = 0; /* Initialize to zero and then do CRC32 */␊
183 efiSystemTable->Hdr.Reserved = 0;␊
184␊
185 efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊
186 memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊
187 efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊
188␊
189 /* XXX: We may need to have basic implementations of ConIn/ConOut/StdErr */␊
190 /* The EFI spec states that all handles are invalid after boot services have been␊
191 * exited so we can probably get by with leaving the handles as zero. */␊
192 efiSystemTable->ConsoleInHandle = 0;␊
193 efiSystemTable->ConIn = 0;␊
194␊
195 efiSystemTable->ConsoleOutHandle = 0;␊
196 efiSystemTable->ConOut = 0;␊
197␊
198 efiSystemTable->StandardErrorHandle = 0;␊
199 efiSystemTable->StdErr = 0;␊
200␊
201 efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊
202 /* According to the EFI spec, BootServices aren't valid after the␊
203 * boot process is exited so we can probably do without it.␊
204 * Apple didn't provide a definition for it in pexpert/i386/efi.h␊
205 * so I'm guessing they don't use it.␊
206 */␊
207 efiSystemTable->BootServices = 0;␊
208␊
209 efiSystemTable->NumberOfTableEntries = 0;␊
210 efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊
211␊
212␊
213 /* We're done. Now CRC32 the thing so the kernel will accept it */␊
214 fixupEfiSystemTableCRC32(efiSystemTable);␊
215␊
216 /* -------------------------------------------------------------------- */␊
217 /* Runtime services */␊
218 EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊
219 efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊
220 efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊
221 efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊
222 efiRuntimeServices->Hdr.CRC32 = 0;␊
223 efiRuntimeServices->Hdr.Reserved = 0;␊
224␊
225 /* There are a number of function pointers in the efiRuntimeServices table.␊
226 * These are the Foundation (e.g. core) services and are expected to be present on␊
227 * all EFI-compliant machines. Some kernel extensions (notably AppleEFIRuntime)␊
228 * will call these without checking to see if they are null.␊
229 *␊
230 * We don't really feel like doing an EFI implementation in the bootloader␊
231 * but it is nice if we can at least prevent a complete crash by␊
232 * at least providing some sort of implementation until one can be provided␊
233 * nicely in a kext.␊
234 */␊
235 void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊
236 void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊
237 efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
238 efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
239 efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
240 efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
241 efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊
242 efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊
243 efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
244 efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊
245 efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
246 efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊
247 efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊
248␊
249 /* We're done. Now CRC32 the thing so the kernel will accept it */␊
250 efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊
251␊
252␊
253 /* -------------------------------------------------------------------- */␊
254 /* Finish filling in the rest of the boot args that we need. */␊
255 bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊
256 bootArgs->efiMode = kBootArgsEfiMode64;␊
257␊
258 /* The bootArgs structure as a whole is bzero'd so we don't need to fill in␊
259 * things like efiRuntimeServices* and what not.␊
260 *␊
261 * In fact, the only code that seems to use that is the hibernate code so it␊
262 * knows not to save the pages. It even checks to make sure its nonzero.␊
263 */␊
264}␊
265␊
266/*␊
267In addition to the EFI tables there is also the EFI device tree node.␊
268In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊
269the tsc_init function will panic very early on in kernel startup, before␊
270the console is available.␊
271*/␊
272␊
273/*==========================================================================␊
274 * FSB Frequency detection␊
275 */␊
276␊
277/* These should be const but DT__AddProperty takes char* */␊
278static const char const TSC_Frequency_prop[] = "TSCFrequency";␊
279static const char const FSB_Frequency_prop[] = "FSBFrequency";␊
280static const char const CPU_Frequency_prop[] = "CPUFrequency";␊
281␊
282/*==========================================================================␊
283 * SMBIOS␊
284 */␊
285␊
286/* From Foundation/Efi/Guid/Smbios/SmBios.h */␊
287/* Modified to wrap Data4 array init with {} */␊
288#define EFI_SMBIOS_TABLE_GUID \␊
289 { \␊
290 0xeb9d2d31, 0x2d88, 0x11d3, {0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} \␊
291 }␊
292␊
293/* From Foundation/Efi/Guid/Smbios/SmBios.c */␊
294EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊
295␊
296#define SMBIOS_RANGE_START 0x000F0000␊
297#define SMBIOS_RANGE_END 0x000FFFFF␊
298␊
299/* '_SM_' in little endian: */␊
300#define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊
301␊
302#define EFI_ACPI_TABLE_GUID \␊
303 { \␊
304 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊
305 }␊
306␊
307#define EFI_ACPI_20_TABLE_GUID \␊
308 { \␊
309 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊
310 }␊
311␊
312EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊
313EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊
314␊
315␊
316/*==========================================================================␊
317 * Fake EFI implementation␊
318 */␊
319␊
320/* These should be const but DT__AddProperty takes char* */␊
321static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
322static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
323static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
324static const char const FIRMWARE_ABI_PROP_VALUE[] = "EFI64";␊
325static const char const SYSTEM_ID_PROP[] = "system-id";␊
326static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
327static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
328static const char const MODEL_PROP[] = "Model";␊
329␊
330#define UUID_LEN␉16␊
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=0;␊
336 EFI_CHAR16* dst = 0;␊
337 size_t i;␊
338␊
339 if (!key || !(*key) || !len || !(src = getStringForKey(key, &bootInfo->smbiosConfig)))␊
340 return 0;␊
341␊
342 *len = strlen(src);␊
343 dst = (EFI_CHAR16*) MALLOC(((*len)+1)*2);␊
344 for (i=0; i<*len; i++) dst[i] = src[i];␊
345 dst[*len] = '\0';␊
346␊
347 return dst;␊
348}␊
349␊
350#define DEBUG_SMBIOS 1␊
351␊
352/* Get the SystemID from the bios dmi info */␊
353static EFI_CHAR8* getSmbiosUUID()␊
354{␊
355␉struct SMBEntryPoint␉*smbios;␊
356␉struct DMIHeader␉*dmihdr;␊
357␉SMBByte␉␉␉*p;␊
358␉int␉␉␉i, found, isZero, isOnes;␊
359␉static EFI_CHAR8 uuid[UUID_LEN+1]="";␊
360␉␊
361␉smbios = getAddressOfSmbiosTable();␉/* checks for _SM_ anchor and table header checksum */␊
362␉if (memcmp( &smbios->dmi.anchor[0], "_DMI_", 5) != 0) {␊
363␉␉return 0;␊
364␉}␊
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␉i = 0;␊
369␉found = 0;␊
370␉p = (SMBByte *) smbios->dmi.tableAddress;␊
371␉while (i < smbios->dmi.structureCount && p + 4 <= (SMBByte *)smbios->dmi.tableAddress + smbios->dmi.tableLength) {␊
372␉␉dmihdr = (struct DMIHeader *) p;␊
373␉␉verbose(">>>>>> DMI(%d): type=0x%02x, len=0x%d\n",i,dmihdr->type,dmihdr->length);␊
374␉␉if (dmihdr->length < 4 || dmihdr->type == 127 /* EOT */) break;␊
375␉␉if (dmihdr->type == 1) {␉␉/* 3.3.2 System Information */␊
376␉␉␉if (dmihdr->length >= 0x19) found = 1;␊
377␉␉␉break;␊
378␉␉}␊
379␉␉p = p + dmihdr->length;␊
380␉␉while ((p - (SMBByte *)smbios->dmi.tableAddress + 1 < smbios->dmi.tableLength) && (p[0] != 0x00 || p[1] != 0x00)) ␊
381␉␉␉p++;␊
382␉␉p += 2;␊
383␉␉i++;␊
384␉}␊
385␊
386␉if (!found) return 0;␊
387␊
388␉verbose("Found SMBIOS System Information Table 1\n");␊
389␉p += 8;␊
390␊
391␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊
392␉␉if (p[i] != 0x00) isZero = 0;␊
393␉␉if (p[i] != 0xff) isOnes = 0;␊
394␉}␊
395␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊
396␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊
397␉␉return 0;␊
398␉}␊
399␊
400␉memcpy(uuid, p, UUID_LEN+1);␊
401␉return uuid;␊
402}␊
403␊
404static EFI_CHAR8* getUUIDFromString(const char *source)␊
405{␊
406 if (!source) return 0;␊
407␊
408␉char␉*p = (char *)source;␊
409␉int␉i;␊
410␉char␉buf[3];␊
411␉static EFI_CHAR8 uuid[UUID_LEN+1]="";␊
412␊
413␉buf[2] = '\0';␊
414␉for (i=0; i<UUID_LEN; i++) {␊
415␉␉if (p[0] == '\0' || p[1] == '\0' || !isxdigit(p[0]) || !isxdigit(p[1])) {␊
416␉␉␉verbose("[ERROR] UUID='%s' syntax error\n", source);␊
417␉␉␉return 0;␊
418␉␉}␊
419␉␉buf[0] = *p++;␊
420␉␉buf[1] = *p++;␊
421␉␉uuid[i] = (unsigned char) strtoul(buf, NULL, 16);␊
422␉␉if (*p == '-' && (i % 2) == 1 && i < UUID_LEN - 1) {␊
423␉␉␉p++;␊
424␉␉}␊
425␉}␊
426␉uuid[UUID_LEN]='\0';␊
427␊
428␉if (*p != '\0') {␊
429␉␉verbose("[ERROR] UUID='%s' syntax error\n", source);␊
430␉␉return 0;␊
431␉}␊
432␉return uuid;␊
433}␊
434␊
435/* Parse an UUID string into an (EFI_CHAR8*) buffer */␊
436␊
437// FIXME: can't use my original code here,␊
438// Ironically, trying to reuse convertHexStr2Binary() would RESET the system!␊
439/*␊
440static EFI_CHAR8* getUUIDFromString2(const char * szInUUID)␊
441{␊
442 char szUUID[UUID_LEN+1], *p=szUUID;␊
443 int size=0;␊
444 void* ret;␊
445␊
446 if (!szInUUID || strlen(szInUUID)<UUID_LEN) return (EFI_CHAR8*) 0;␊
447␊
448 while(*szInUUID) if (*szInUUID!='-') *p++=*szInUUID++; else szInUUID++;␊
449 *p='\0';␊
450 ret = convertHexStr2Binary(szUUID, &size);␊
451 if (!ret || size!=UUID_LEN) ␊
452 {␊
453 verbose("UUID: cannot convert string <%s> to valid UUID.\n", szUUID);␊
454 return (EFI_CHAR8*) 0;␊
455 }␊
456 return (EFI_CHAR8*) ret; // new allocated buffer containing the converted string to bin␊
457}␊
458*/␊
459␊
460/* return a binary UUID value from the overriden SystemID and SMUUID if ound, ␊
461 * or from the bios if not, or from a fixed value if no bios value is found ␊
462 */␊
463static EFI_CHAR8* getSystemID()␊
464{␉// unable to determine UUID for host. Error: 35 fix␊
465 const char * sysId = getStringForKey("SystemID", &bootInfo->bootConfig);␊
466 EFI_CHAR8* ret = getUUIDFromString(sysId);␊
467 if(!sysId || !ret) // try smbios.plist SMUUID override␊
468 ret=getUUIDFromString((sysId = getStringForKey("SMUUID",&bootInfo->smbiosConfig)));␊
469 if(!sysId || !ret) { // try bios dmi info UUID extraction ␊
470 ret = getSmbiosUUID();␊
471 sysId=0;␊
472 }␊
473 if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊
474 ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊
475␊
476 verbose("Customizing SystemID with : %s\n", sysId ? sysId :"BIOS internal UUID");␊
477 return ret;␊
478}␊
479␊
480void setupEfiDeviceTree(void)␊
481{␊
482 EFI_CHAR16* ret16=0;␊
483 EFI_CHAR8* ret=0;␊
484 size_t len=0;␊
485 Node *node;␊
486 EFI_CHAR8 SystemType=1;␊
487 const char *value;␊
488␊
489 node = DT__FindNode("/", false);␊
490 ␊
491 if (node == 0) {␊
492 stop("Couldn't get root node");␊
493 }␊
494␊
495 /* We could also just do DT__FindNode("/efi/platform", true)␊
496 * But I think eventually we want to fill stuff in the efi node␊
497 * too so we might as well create it so we have a pointer for it too.␊
498 */␊
499 node = DT__AddChild(node, "efi");␊
500␊
501 DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊
502 DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_PROP_VALUE), (char*)FIRMWARE_ABI_PROP_VALUE);␊
503 DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊
504␊
505 /* TODO: Fill in other efi properties if necessary */␊
506␊
507 /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊
508 * is set up. That is, name and table properties */␊
509 Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊
510␊
511 /* The value of the table property is the 32-bit physical address for the RuntimeServices table.␊
512 * Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊
513 * for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊
514 * the only thing to use a non-malloc'd pointer for something in the DT␊
515 */␊
516 DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST->RuntimeServices);␊
517␊
518 /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊
519 * all of the configuration tables needed by various kernel extensions.␊
520 */␊
521 gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊
522␊
523 /* Now fill in the /efi/platform Node */␊
524 Node *efiPlatformNode = DT__AddChild(node, "platform");␊
525␊
526 /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊
527 * the value in the fsbFrequency global and not an malloc'd pointer␊
528 * because the DT_AddProperty function does not copy its args.␊
529 */␊
530 if(fsbFrequency != 0)␊
531 DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &fsbFrequency);␊
532␊
533 /* Export TSC and CPU frequencies for use by the kernel or KEXTs␊
534 */␊
535 if(tscFrequency != 0)␊
536 DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &tscFrequency);␊
537␊
538 if(cpuFrequency != 0)␊
539 DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &cpuFrequency);␊
540␊
541 /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊
542 if((ret=getSystemID()))␊
543 DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊
544␊
545 /* Export system-type. Allowed values are: 0x01 for desktop computer (default), 0x02 for portable computers */␊
546 if (getValueForKey("system-type", &value, (int*) &len, &bootInfo->bootConfig) && value != NULL) {␊
547 if (*value != '1' && *value != '2') ␊
548␉verbose("Error: system-type must be 1 (desktop) or 2 (portable). Defaulting to 1!\n");␊
549 else␊
550␉SystemType = (unsigned char) (*value-'0');␊
551 }␊
552 DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(EFI_CHAR8), &SystemType);␊
553␊
554 /* Export SystemSerialNumber if present */␊
555 if ((ret16=getSmbiosChar16("SMserial", &len)))␊
556 DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊
557␊
558 /* Export Model if present */␊
559 if ((ret16=getSmbiosChar16("SMproductname", &len)))␊
560 DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊
561␊
562 /* Fill /efi/device-properties node.␊
563 */␊
564 setupDeviceProperties(node);␊
565}␊
566␊
567/* Installs all the needed configuration table entries */␊
568void setupEfiConfigurationTable()␊
569{␊
570 smbios_p = (EFI_PTR32)getSmbios();␊
571 addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊
572␊
573 // Setup ACPI with DSDT overrides (mackerintel's patch)␊
574 setupAcpi();␊
575 ␊
576 // We've obviously changed the count.. so fix up the CRC32␊
577 fixupEfiSystemTableCRC32(gST);␊
578}␊
579␊
580void setupEfiDevices(void)␊
581{␊
582␉setup_pci_devs(root_pci_dev);␊
583}␊
584␊
585/* Entrypoint from boot.c */␊
586void setupFakeEfi(void)␊
587{␊
588␉// Generate efi device strings ␊
589␉setupEfiDevices();␊
590␉␊
591␉// Initialize the base table␊
592␉setupEfiTables();␊
593␉␊
594 // Initialize the device tree␊
595 setupEfiDeviceTree();␊
596␊
597 // Add configuration table entries to both the services table and the device tree␊
598 setupEfiConfigurationTable();␊
599}␊
600␊
601

Archive Download this file

Revision: 4