Chameleon

View 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//Azi:efi32/64 - "struct fake_efi_pages" moved into setupEfiTables32/64␊
93␊
94EFI_SYSTEM_TABLE_32 *gST32 = NULL; //Azi:efi32/64␊
95EFI_SYSTEM_TABLE_64 *gST64 = NULL; //␉␉||␊
96Node *gEfiConfigurationTableNode = NULL;␊
97␊
98extern EFI_STATUS addConfigurationTable(EFI_GUID const *pGuid, void *table, char const *alias)␊
99{␊
100 EFI_UINTN i = 0; //Azi:efi32/64␊
101␉␊
102␉//Azi:efi32/64 - like this, cpu's with em64t will use EFI64 on pre 10.6 systems,␊
103␉// wich seems to cause no problem. In case it does, force i386 arch.␊
104␉if (archCpuType == CPU_TYPE_I386)␊
105␉{␊
106␉␉i = gST32->NumberOfTableEntries;␊
107␉}␊
108␉else␊
109␉{␊
110␉␉i = gST64->NumberOfTableEntries;␊
111␉}␊
112␉␊
113 /* We only do adds, not modifications and deletes like InstallConfigurationTable */␊
114 if(i >= MAX_CONFIGURATION_TABLE_ENTRIES)␊
115 stop("Ran out of space for configuration tables. Increase the reserved size in the code.\n");␊
116␊
117 if(pGuid == NULL)␊
118 return EFI_INVALID_PARAMETER;␊
119␊
120 if(table != NULL)␊
121 {␊
122 ␉/* FIXME␊
123 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorGuid = *pGuid;␊
124 ((EFI_CONFIGURATION_TABLE_64 *)gST->ConfigurationTable)[i].VendorTable = (EFI_PTR64)table;␊
125␊
126 ++gST->NumberOfTableEntries;␊
127␉␉ */␊
128 Node *tableNode = DT__AddChild(gEfiConfigurationTableNode, mallocStringForGuid(pGuid));␊
129␊
130 /* Use the pointer to the GUID we just stuffed into the system table */␊
131␉ ␉DT__AddProperty(tableNode, "guid", sizeof(EFI_GUID), (void*)pGuid);␊
132␊
133 /* The "table" property is the 32-bit (in our implementation) physical address of the table */␊
134 ␉␉DT__AddProperty(tableNode, "table", sizeof(void*) * 2, table);␊
135␊
136 /* Assume the alias pointer is a global or static piece of data */␊
137 if(alias != NULL)␊
138 DT__AddProperty(tableNode, "alias", strlen(alias)+1, (char*)alias);␊
139␊
140 return EFI_SUCCESS;␊
141 }␊
142 return EFI_UNSUPPORTED;␊
143}␊
144␊
145//Azi:efi32/64 - crc32 done in place.␊
146/*static inline void fixupEfiSystemTableCRC32(EFI_SYSTEM_TABLE_64 *efiSystemTable)␊
147{␊
148 efiSystemTable->Hdr.CRC32 = 0;␊
149 efiSystemTable->Hdr.CRC32 = crc32(0L, efiSystemTable, efiSystemTable->Hdr.HeaderSize);␊
150}*/␊
151␊
152/*␊
153What we do here is simply allocate a fake EFI system table and a fake EFI␊
154runtime services table.␊
155␊
156Because we build against modern headers with kBootArgsRevision 4 we␊
157also take care to set efiMode = 32.␊
158*/␊
159void setupEfiTables32(void) //Azi:efi32/64␊
160{␊
161␉// We use the fake_efi_pages struct so that we only need to do one kernel␊
162␉// memory allocation for all needed EFI data. Otherwise, small allocations␊
163␉// like the FIRMWARE_VENDOR string would take up an entire page.␊
164␉// NOTE WELL: Do NOT assume this struct has any particular layout within itself.␊
165␉// It is absolutely not intended to be publicly exposed anywhere␊
166␉// We say pages (plural) although right now we are well within the 1 page size␊
167␉// and probably will stay that way.␊
168␉struct fake_efi_pages␊
169␉{␊
170␉␉EFI_SYSTEM_TABLE_32 efiSystemTable;␊
171␉␉EFI_RUNTIME_SERVICES_32 efiRuntimeServices;␊
172␉␉EFI_CONFIGURATION_TABLE_32 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊
173␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊
174␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
175␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
176␉};␊
177␉␊
178␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊
179␉␊
180␉// Zero out all the tables in case fields are added later␊
181␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊
182␉␊
183␉// --------------------------------------------------------------------␊
184␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊
185␉// functions returning int and simply return for void functions.␊
186␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊
187␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊
188␉␊
189␉// --------------------------------------------------------------------␊
190␉// System table␊
191␉EFI_SYSTEM_TABLE_32 *efiSystemTable = gST32 = &fakeEfiPages->efiSystemTable;␊
192␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊
193␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊
194␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_32);␊
195␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊
196␉efiSystemTable->Hdr.Reserved = 0;␊
197␉␊
198␉efiSystemTable->FirmwareVendor = (EFI_PTR32)&fakeEfiPages->firmwareVendor;␊
199␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊
200␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊
201␉␊
202␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊
203␉// The EFI spec states that all handles are invalid after boot services have been␊
204␉// exited so we can probably get by with leaving the handles as zero.␊
205␉efiSystemTable->ConsoleInHandle = 0;␊
206␉efiSystemTable->ConIn = 0;␊
207␉␊
208␉efiSystemTable->ConsoleOutHandle = 0;␊
209␉efiSystemTable->ConOut = 0;␊
210␉␊
211␉efiSystemTable->StandardErrorHandle = 0;␊
212␉efiSystemTable->StdErr = 0;␊
213␉␊
214␉efiSystemTable->RuntimeServices = (EFI_PTR32)&fakeEfiPages->efiRuntimeServices;␊
215␉␊
216␉// According to the EFI spec, BootServices aren't valid after the␊
217␉// boot process is exited so we can probably do without it.␊
218␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊
219␉// so I'm guessing they don't use it.␊
220␉efiSystemTable->BootServices = 0;␊
221␉␊
222␉efiSystemTable->NumberOfTableEntries = 0;␊
223␉efiSystemTable->ConfigurationTable = (EFI_PTR32)fakeEfiPages->efiConfigurationTable;␊
224␉␊
225␉// We're done. Now CRC32 the thing so the kernel will accept it.␊
226␉// Must be initialized to zero before CRC32, done above.␊
227␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊
228␉␊
229␉// --------------------------------------------------------------------␊
230␉// Runtime services␊
231␉EFI_RUNTIME_SERVICES_32 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊
232␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊
233␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊
234␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_32);␊
235␉efiRuntimeServices->Hdr.CRC32 = 0;␊
236␉efiRuntimeServices->Hdr.Reserved = 0;␊
237␉␊
238␉// There are a number of function pointers in the efiRuntimeServices table.␊
239␉// These are the Foundation (e.g. core) services and are expected to be present on␊
240␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊
241␉// will call these without checking to see if they are null.␊
242␉//␊
243␉// We don't really feel like doing an EFI implementation in the bootloader␊
244␉// but it is nice if we can at least prevent a complete crash by␊
245␉// at least providing some sort of implementation until one can be provided␊
246␉// nicely in a kext.␊
247␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊
248␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊
249␉efiRuntimeServices->GetTime = (EFI_PTR32)unsupportedret_fp;␊
250␉efiRuntimeServices->SetTime = (EFI_PTR32)unsupportedret_fp;␊
251␉efiRuntimeServices->GetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊
252␉efiRuntimeServices->SetWakeupTime = (EFI_PTR32)unsupportedret_fp;␊
253␉efiRuntimeServices->SetVirtualAddressMap = (EFI_PTR32)unsupportedret_fp;␊
254␉efiRuntimeServices->ConvertPointer = (EFI_PTR32)unsupportedret_fp;␊
255␉efiRuntimeServices->GetVariable = (EFI_PTR32)unsupportedret_fp;␊
256␉efiRuntimeServices->GetNextVariableName = (EFI_PTR32)unsupportedret_fp;␊
257␉efiRuntimeServices->SetVariable = (EFI_PTR32)unsupportedret_fp;␊
258␉efiRuntimeServices->GetNextHighMonotonicCount = (EFI_PTR32)unsupportedret_fp;␊
259␉efiRuntimeServices->ResetSystem = (EFI_PTR32)voidret_fp;␊
260␉␊
261␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊
262␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊
263␉␊
264␉// --------------------------------------------------------------------␊
265␉// Finish filling in the rest of the boot args that we need.␊
266␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊
267␉bootArgs->efiMode = kBootArgsEfiMode32;␊
268␉␊
269␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊
270␉// things like efiRuntimeServices* and what not.␊
271␉//␊
272␉// In fact, the only code that seems to use that is the hibernate code so it␊
273␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊
274}␊
275␊
276void setupEfiTables64(void) //Azi:efi32/64␊
277{␊
278␉struct fake_efi_pages␊
279␉{␊
280␉␉EFI_SYSTEM_TABLE_64 efiSystemTable;␊
281␉␉EFI_RUNTIME_SERVICES_64 efiRuntimeServices;␊
282␉␉EFI_CONFIGURATION_TABLE_64 efiConfigurationTable[MAX_CONFIGURATION_TABLE_ENTRIES];␊
283␉␉EFI_CHAR16 firmwareVendor[sizeof(FIRMWARE_VENDOR)/sizeof(EFI_CHAR16)];␊
284␉␉uint8_t voidret_instructions[sizeof(VOIDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
285␉␉uint8_t unsupportedret_instructions[sizeof(UNSUPPORTEDRET_INSTRUCTIONS)/sizeof(uint8_t)];␊
286␉};␊
287␉␊
288␉struct fake_efi_pages *fakeEfiPages = (struct fake_efi_pages*)AllocateKernelMemory(sizeof(struct fake_efi_pages));␊
289␉␊
290␉// Zero out all the tables in case fields are added later␊
291␉bzero(fakeEfiPages, sizeof(struct fake_efi_pages));␊
292␉␊
293␉// --------------------------------------------------------------------␊
294␉// Initialize some machine code that will return EFI_UNSUPPORTED for␊
295␉// functions returning int and simply return for void functions.␊
296␉memcpy(fakeEfiPages->voidret_instructions, VOIDRET_INSTRUCTIONS, sizeof(VOIDRET_INSTRUCTIONS));␊
297␉memcpy(fakeEfiPages->unsupportedret_instructions, UNSUPPORTEDRET_INSTRUCTIONS, sizeof(UNSUPPORTEDRET_INSTRUCTIONS));␊
298␉␊
299␉// --------------------------------------------------------------------␊
300␉// System table␊
301␉EFI_SYSTEM_TABLE_64 *efiSystemTable = gST64 = &fakeEfiPages->efiSystemTable;␊
302␉efiSystemTable->Hdr.Signature = EFI_SYSTEM_TABLE_SIGNATURE;␊
303␉efiSystemTable->Hdr.Revision = EFI_SYSTEM_TABLE_REVISION;␊
304␉efiSystemTable->Hdr.HeaderSize = sizeof(EFI_SYSTEM_TABLE_64);␊
305␉efiSystemTable->Hdr.CRC32 = 0; // Initialize to zero and then do CRC32␊
306␉efiSystemTable->Hdr.Reserved = 0;␊
307␉␊
308␉efiSystemTable->FirmwareVendor = ptov64((EFI_PTR32)&fakeEfiPages->firmwareVendor);␊
309␉memcpy(fakeEfiPages->firmwareVendor, FIRMWARE_VENDOR, sizeof(FIRMWARE_VENDOR));␊
310␉efiSystemTable->FirmwareRevision = FIRMWARE_REVISION;␊
311␉␊
312␉// XXX: We may need to have basic implementations of ConIn/ConOut/StdErr␊
313␉// The EFI spec states that all handles are invalid after boot services have been␊
314␉// exited so we can probably get by with leaving the handles as zero.␊
315␉efiSystemTable->ConsoleInHandle = 0;␊
316␉efiSystemTable->ConIn = 0;␊
317␉␊
318␉efiSystemTable->ConsoleOutHandle = 0;␊
319␉efiSystemTable->ConOut = 0;␊
320␉␊
321␉efiSystemTable->StandardErrorHandle = 0;␊
322␉efiSystemTable->StdErr = 0;␊
323␉␊
324␉efiSystemTable->RuntimeServices = ptov64((EFI_PTR32)&fakeEfiPages->efiRuntimeServices);␊
325␉// According to the EFI spec, BootServices aren't valid after the␊
326␉// boot process is exited so we can probably do without it.␊
327␉// Apple didn't provide a definition for it in pexpert/i386/efi.h␊
328␉// so I'm guessing they don't use it.␊
329␉efiSystemTable->BootServices = 0;␊
330␉␊
331␉efiSystemTable->NumberOfTableEntries = 0;␊
332␉efiSystemTable->ConfigurationTable = ptov64((EFI_PTR32)fakeEfiPages->efiConfigurationTable);␊
333␉␊
334␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊
335␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊
336␉␊
337␉// --------------------------------------------------------------------␊
338␉// Runtime services␊
339␉EFI_RUNTIME_SERVICES_64 *efiRuntimeServices = &fakeEfiPages->efiRuntimeServices;␊
340␉efiRuntimeServices->Hdr.Signature = EFI_RUNTIME_SERVICES_SIGNATURE;␊
341␉efiRuntimeServices->Hdr.Revision = EFI_RUNTIME_SERVICES_REVISION;␊
342␉efiRuntimeServices->Hdr.HeaderSize = sizeof(EFI_RUNTIME_SERVICES_64);␊
343␉efiRuntimeServices->Hdr.CRC32 = 0;␊
344␉efiRuntimeServices->Hdr.Reserved = 0;␊
345␉␊
346␉// There are a number of function pointers in the efiRuntimeServices table.␊
347␉// These are the Foundation (e.g. core) services and are expected to be present on␊
348␉// all EFI-compliant machines.␉Some kernel extensions (notably AppleEFIRuntime)␊
349␉// will call these without checking to see if they are null.␊
350␉//␊
351␉// We don't really feel like doing an EFI implementation in the bootloader␊
352␉// but it is nice if we can at least prevent a complete crash by␊
353␉// at least providing some sort of implementation until one can be provided␊
354␉// nicely in a kext.␊
355␉␊
356␉void (*voidret_fp)() = (void*)fakeEfiPages->voidret_instructions;␊
357␉void (*unsupportedret_fp)() = (void*)fakeEfiPages->unsupportedret_instructions;␊
358␉efiRuntimeServices->GetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
359␉efiRuntimeServices->SetTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
360␉efiRuntimeServices->GetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
361␉efiRuntimeServices->SetWakeupTime = ptov64((EFI_PTR32)unsupportedret_fp);␊
362␉efiRuntimeServices->SetVirtualAddressMap = ptov64((EFI_PTR32)unsupportedret_fp);␊
363␉efiRuntimeServices->ConvertPointer = ptov64((EFI_PTR32)unsupportedret_fp);␊
364␉efiRuntimeServices->GetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
365␉efiRuntimeServices->GetNextVariableName = ptov64((EFI_PTR32)unsupportedret_fp);␊
366␉efiRuntimeServices->SetVariable = ptov64((EFI_PTR32)unsupportedret_fp);␊
367␉efiRuntimeServices->GetNextHighMonotonicCount = ptov64((EFI_PTR32)unsupportedret_fp);␊
368␉efiRuntimeServices->ResetSystem = ptov64((EFI_PTR32)voidret_fp);␊
369␉␊
370␉// We're done.␉Now CRC32 the thing so the kernel will accept it␊
371␉efiRuntimeServices->Hdr.CRC32 = crc32(0L, efiRuntimeServices, efiRuntimeServices->Hdr.HeaderSize);␊
372␉␊
373␉// --------------------------------------------------------------------␊
374␉// Finish filling in the rest of the boot args that we need.␊
375␉bootArgs->efiSystemTable = (uint32_t)efiSystemTable;␊
376␉bootArgs->efiMode = kBootArgsEfiMode64;␊
377␉␊
378␉// The bootArgs structure as a whole is bzero'd so we don't need to fill in␊
379␉// things like efiRuntimeServices* and what not.␊
380␉//␊
381␉// In fact, the only code that seems to use that is the hibernate code so it␊
382␉// knows not to save the pages.␉ It even checks to make sure its nonzero.␊
383}␊
384␊
385/*␊
386In addition to the EFI tables there is also the EFI device tree node.␊
387In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊
388the tsc_init function will panic very early on in kernel startup, before␊
389the console is available.␊
390*/␊
391␊
392/*==========================================================================␊
393 * FSB Frequency detection␊
394 */␊
395␊
396/* These should be const but DT__AddProperty takes char* */␊
397static const char const TSC_Frequency_prop[] = "TSCFrequency";␊
398static const char const FSB_Frequency_prop[] = "FSBFrequency";␊
399static const char const CPU_Frequency_prop[] = "CPUFrequency";␊
400␊
401/*==========================================================================␊
402 * SMBIOS␊
403 */␊
404␊
405/* From Foundation/Efi/Guid/Smbios/SmBios.c */␊
406EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊
407␊
408#define SMBIOS_RANGE_START 0x000F0000␊
409#define SMBIOS_RANGE_END 0x000FFFFF␊
410␊
411/* '_SM_' in little endian: */␊
412#define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊
413␊
414#define EFI_ACPI_TABLE_GUID \␊
415 { \␊
416 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊
417 }␊
418␊
419#define EFI_ACPI_20_TABLE_GUID \␊
420 { \␊
421 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊
422 }␊
423␊
424EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊
425EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊
426␊
427␊
428/*==========================================================================␊
429 * Fake EFI implementation␊
430 */␊
431␊
432/* These should be const but DT__AddProperty takes char* */␊
433static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊
434static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊
435static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊
436static const char const FIRMWARE_ABI_32_PROP_VALUE[] = "EFI32"; //Azi:efi32/64␊
437static const char const FIRMWARE_ABI_64_PROP_VALUE[] = "EFI64"; //␉␉||␊
438static const char const SYSTEM_ID_PROP[] = "system-id";␊
439static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊
440static const char const SYSTEM_TYPE_PROP[] = "system-type";␊
441static const char const MODEL_PROP[] = "Model";␊
442␊
443␊
444/* Get an smbios option string option to convert to EFI_CHAR16 string */␊
445static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊
446{␊
447 const char * src= getStringForKey(key, &bootInfo->smbiosConfig);␊
448 EFI_CHAR16* dst = 0;␊
449 size_t i=0;␊
450␊
451 if (!key || !(*key) || !len || !src) return 0;␊
452␊
453 *len = strlen(src);␊
454 dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊
455 for (; i < (*len); i++) dst[i] = src[i];␊
456 dst[(*len)] = '\0';␊
457 *len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊
458 return dst;␊
459}␊
460␊
461/* Get the SystemID from the bios dmi info */␊
462static EFI_CHAR8* getSmbiosUUID()␊
463{␊
464␉struct SMBEntryPoint␉*smbios;␊
465␉SMBByte␉␉␉*p;␊
466␉int␉␉␉i, isZero, isOnes;␊
467␉static EFI_CHAR8 uuid[UUID_LEN];␊
468␊
469␉smbios = getSmbios(SMBIOS_PATCHED);␉/* checks for _SM_ anchor and table header checksum */␊
470␉if (smbios==NULL) return 0; // getSmbios() return a non null value if smbios is found␊
471␊
472␉p = (SMBByte*) FindFirstDmiTableOfType(1, 0x19); /* Type 1: (3.3.2) System Information */␊
473␉if (p==NULL) return NULL;␊
474 ␊
475␉verbose("Found SMBIOS System Information Table 1\n");␊
476␉p += 8;␊
477␊
478␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊
479␉␉if (p[i] != 0x00) isZero = 0;␊
480␉␉if (p[i] != 0xff) isOnes = 0;␊
481␉}␊
482␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊
483␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊
484␉␉return 0;␊
485␉}␊
486␊
487␉memcpy(uuid, p, UUID_LEN);␊
488␉return uuid;␊
489}␊
490␊
491/* return a binary UUID value from the overriden SystemID and SMUUID if found, ␊
492 * or from the bios if not, or from a fixed value if no bios value is found ␊
493 */␊
494static EFI_CHAR8* getSystemID()␊
495{ // unable to determine UUID for host. Error: 35 fix␊
496␊
497 // Rek: new SMsystemid option conforming to smbios notation standards, this option should␊
498 // belong to smbios config only ...␊
499 const char * sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊
500 EFI_CHAR8* ret = getUUIDFromString(sysId);␊
501␊
502 if(!sysId || !ret) { // try bios dmi info UUID extraction ␊
503 ret = getSmbiosUUID();␊
504 sysId = 0;␊
505 }␊
506 if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊
507 ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊
508␊
509 verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊
510 return ret;␊
511}␊
512␊
513// must be called AFTER setup Acpi because we need to take care of correct facp content to reflect in ioregs␊
514void setupSystemType()␊
515{␊
516 Node *node = DT__FindNode("/", false);␊
517 if (node == 0) stop("Couldn't get root node");␊
518 // we need to write this property after facp parsing␊
519 /* Export system-type only if it has been overrriden by the SystemType option */␊
520 DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊
521}␊
522␊
523void setupEfiDeviceTree(void)␊
524{␊
525 EFI_CHAR16* ret16=0;␊
526 EFI_CHAR8* ret=0;␊
527 size_t len=0;␊
528 Node *node;␊
529␊
530 node = DT__FindNode("/", false);␊
531 ␊
532 if (node == 0) stop("Couldn't get root node");␊
533 ␊
534 /* We could also just do DT__FindNode("/efi/platform", true)␊
535 * But I think eventually we want to fill stuff in the efi node␊
536 * too so we might as well create it so we have a pointer for it too.␊
537 */␊
538 node = DT__AddChild(node, "efi");␊
539␊
540␉if (archCpuType == CPU_TYPE_I386) //Azi:efi32/64␊
541␉{␊
542␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_32_PROP_VALUE), (char*)FIRMWARE_ABI_32_PROP_VALUE);␊
543␉}␊
544␉else␊
545␉{␊
546␉␉DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_64_PROP_VALUE), (char*)FIRMWARE_ABI_64_PROP_VALUE);␊
547␉}␊
548␉␊
549 DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊
550 DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊
551␊
552 /* TODO: Fill in other efi properties if necessary */␊
553␊
554 /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊
555 * is set up. That is, name and table properties */␊
556 Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊
557␊
558 if (archCpuType == CPU_TYPE_I386) //Azi:efi32/64␊
559␉{␊
560␉␉// The value of the table property is the 32-bit physical address for the RuntimeServices table.␊
561␉␉// Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊
562␉␉// for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊
563␉␉// the only thing to use a non-malloc'd pointer for something in the DT␊
564␉␉␊
565␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST32->RuntimeServices);␊
566␉}␊
567␉else␊
568␉{␊
569␉␉DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST64->RuntimeServices);␊
570␉}␊
571␊
572 /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊
573 * all of the configuration tables needed by various kernel extensions.␊
574 */␊
575 gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊
576␊
577 /* Now fill in the /efi/platform Node */␊
578 Node *efiPlatformNode = DT__AddChild(node, "platform");␊
579 ␊
580 /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊
581 * the value in the fsbFrequency global and not an malloc'd pointer␊
582 * because the DT_AddProperty function does not copy its args.␊
583 */␊
584 if(Platform.CPU.FSBFrequency != 0) ␊
585 DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊
586 ␊
587 /* Export TSC and CPU frequencies for use by the kernel or KEXTs */␊
588 if(Platform.CPU.TSCFrequency != 0) ␊
589 DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊
590␊
591 if(Platform.CPU.CPUFrequency != 0) ␊
592 DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊
593␊
594 /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊
595 if((ret=getSystemID()))␊
596 DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊
597␊
598 /* Export SystemSerialNumber if present */␊
599 if ((ret16=getSmbiosChar16("SMserial", &len)))␊
600 DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊
601␊
602 /* Export Model if present */␊
603 if ((ret16=getSmbiosChar16("SMproductname", &len)))␊
604 DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊
605␊
606 /* Fill /efi/device-properties node.␊
607 */␊
608 setupDeviceProperties(node);␊
609}␊
610␊
611/* Load the smbios.plist override config file if any */␊
612static void setupSmbiosConfigFile()␊
613{␊
614 const char * value = getStringForKey(kSMBIOS, &bootInfo->bootConfig);␊
615 extern void scan_mem();␊
616␊
617 if (!value) value = "/Extra/smbios.plist";␊
618 if (loadConfigFile(value, &bootInfo->smbiosConfig) == -1) {␊
619 verbose("No SMBIOS replacement found\n");␊
620 }␊
621␊
622 // get a chance to scan mem dynamically if user asks for it while having the config options loaded as well␊
623 // as opposed to when it was in scan_platform(), also load the orig. smbios so that we can access dmi info without␊
624 // patching the smbios yet␊
625 getSmbios(SMBIOS_ORIGINAL);␊
626 scan_mem(); ␊
627 smbios_p = (EFI_PTR32) getSmbios(SMBIOS_PATCHED);␉// process smbios asap␊
628}␊
629␊
630/* Installs all the needed configuration table entries */␊
631static void setupEfiConfigurationTable()␊
632{␊
633 smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊
634 addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, "SMBIOS_P"); //Azi:efi32/64 - give an "alias" to this stuff :)␊
635␊
636 // Setup ACPI with DSDT overrides (mackerintel's patch)␊
637 setupAcpi();␊
638 ␊
639 // We've obviously changed the count.. so fix up the CRC32␊
640 ␉if (archCpuType == CPU_TYPE_I386) //Azi:efi32/64␊
641␉{␊
642␉␉gST32->Hdr.CRC32 = 0;␊
643␉␉gST32->Hdr.CRC32 = crc32(0L, gST32, gST32->Hdr.HeaderSize);␊
644␉}␊
645␉else␊
646␉{␊
647␉␉gST64->Hdr.CRC32 = 0;␊
648␉␉gST64->Hdr.CRC32 = crc32(0L, gST64, gST64->Hdr.HeaderSize);␊
649␉}␊
650}␊
651␊
652␊
653/* Entrypoint from boot.c */␊
654void setupFakeEfi(void)␊
655{␊
656␉// Generate efi device strings ␊
657␉setup_pci_devs(root_pci_dev);␊
658␊
659␉// load smbios.plist file if any␊
660␉setupSmbiosConfigFile();␊
661␉␊
662␉// Initialize the base table␊
663␉if (archCpuType == CPU_TYPE_I386) //Azi:efi32/64␊
664␉{␊
665␉␉setupEfiTables32();␊
666␉}␊
667␉else␊
668␉{␊
669␉␉setupEfiTables64();␊
670␉}␊
671␉␊
672␉// Initialize the device tree␊
673␉setupEfiDeviceTree();␊
674␉␊
675␉// Add configuration table entries to both the services table and the device tree␊
676␉setupEfiConfigurationTable();␊
677}␊
678␊
679

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Attachment to issue 21

Created: 13 years 9 months ago by Azimutz