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.h"␊ |
16 | #include "device_inject.h"␊ |
17 | #include "convert.h"␊ |
18 | #include "pci.h"␊ |
19 | #include "sl.h"␊ |
20 | ␊ |
21 | extern void setup_pci_devs(pci_dt_t *pci_dt);␊ |
22 | ␊ |
23 | /*␊ |
24 | Modern Darwin kernels require some amount of EFI because Apple machines all␊ |
25 | have EFI. Modifying the kernel source to not require EFI is of course␊ |
26 | possible but would have to be maintained as a separate patch because it is␊ |
27 | unlikely that Apple wishes to add legacy support to their kernel.␊ |
28 | ␊ |
29 | As you can see from the Apple-supplied code in bootstruct.c, it seems that␊ |
30 | the intention was clearly to modify this booter to provide EFI-like structures␊ |
31 | to the kernel rather than modifying the kernel to handle non-EFI stuff. This␊ |
32 | makes a lot of sense from an engineering point of view as it means the kernel␊ |
33 | for the as yet unreleased EFI-only Macs could still be booted by the non-EFI␊ |
34 | DTK systems so long as the kernel checked to ensure the boot tables were␊ |
35 | filled in appropriately. Modern xnu requires a system table and a runtime␊ |
36 | services table and performs no checks whatsoever to ensure the pointers to␊ |
37 | these tables are non-NULL. Therefore, any modern xnu kernel will page fault␊ |
38 | early on in the boot process if the system table pointer is zero.␊ |
39 | ␊ |
40 | Even before that happens, the tsc_init function in modern xnu requires the FSB␊ |
41 | Frequency to be a property in the /efi/platform node of the device tree or else␊ |
42 | it panics the bootstrap process very early on.␊ |
43 | ␊ |
44 | As of this writing, the current implementation found here is good enough␊ |
45 | to make the currently available xnu kernel boot without modification on a␊ |
46 | system with an appropriate processor. With a minor source modification to␊ |
47 | the tsc_init function to remove the explicit check for Core or Core 2␊ |
48 | processors the kernel can be made to boot on other processors so long as␊ |
49 | the code can be executed by the processor and the machine contains the␊ |
50 | necessary hardware.␊ |
51 | */␊ |
52 | ␊ |
53 | ␊ |
54 | /*==========================================================================␊ |
55 | * Utility function to make a device tree string from an EFI_GUID␊ |
56 | */␊ |
57 | ␊ |
58 | static 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 | */␊ |
69 | static 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 */␊ |
80 | static EFI_CHAR16 const FIRMWARE_VENDOR[] = {'C','h','a','m','e','l','e','o','n','_','2','.','0', 0};␊ |
81 | static EFI_UINT32 const FIRMWARE_REVISION = 132; /* FIXME: Find a constant for this. */␊ |
82 | ␊ |
83 | /* Default platform system_id (fix by IntVar) */␊ |
84 | static EFI_CHAR8 const SYSTEM_ID[] = "0123456789ABCDEF";//random value gen by uuidgen␊ |
85 | ␊ |
86 | /* Just a ret instruction */␊ |
87 | static uint8_t const VOIDRET_INSTRUCTIONS[] = {0xc3};␊ |
88 | /* movl $0x80000003,%eax; ret */␊ |
89 | static 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 | */␊ |
100 | struct 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 | ␊ |
110 | EFI_SYSTEM_TABLE_64 *gST = NULL;␊ |
111 | Node *gEfiConfigurationTableNode = NULL;␊ |
112 | ␊ |
113 | extern 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 | ␊ |
148 | static 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 | /*␊ |
155 | What we do here is simply allocate a fake EFI system table and a fake EFI␊ |
156 | runtime services table.␊ |
157 | ␊ |
158 | Because we build against modern headers with kBootArgsRevision 4 we␊ |
159 | also take care to set efiMode = 32.␊ |
160 | */␊ |
161 | void␊ |
162 | setupEfiTables(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 | /*␊ |
267 | In addition to the EFI tables there is also the EFI device tree node.␊ |
268 | In particular, we need /efi/platform to have an FSBFrequency key. Without it,␊ |
269 | the tsc_init function will panic very early on in kernel startup, before␊ |
270 | the console is available.␊ |
271 | */␊ |
272 | ␊ |
273 | /*==========================================================================␊ |
274 | * FSB Frequency detection␊ |
275 | */␊ |
276 | ␊ |
277 | /* These should be const but DT__AddProperty takes char* */␊ |
278 | static const char const TSC_Frequency_prop[] = "TSCFrequency";␊ |
279 | static const char const FSB_Frequency_prop[] = "FSBFrequency";␊ |
280 | static const char const CPU_Frequency_prop[] = "CPUFrequency";␊ |
281 | ␊ |
282 | /*==========================================================================␊ |
283 | * SMBIOS␊ |
284 | */␊ |
285 | ␊ |
286 | /* From Foundation/Efi/Guid/Smbios/SmBios.c */␊ |
287 | EFI_GUID const gEfiSmbiosTableGuid = EFI_SMBIOS_TABLE_GUID;␊ |
288 | ␊ |
289 | #define SMBIOS_RANGE_START 0x000F0000␊ |
290 | #define SMBIOS_RANGE_END 0x000FFFFF␊ |
291 | ␊ |
292 | /* '_SM_' in little endian: */␊ |
293 | #define SMBIOS_ANCHOR_UINT32_LE 0x5f4d535f␊ |
294 | ␊ |
295 | #define EFI_ACPI_TABLE_GUID \␊ |
296 | { \␊ |
297 | 0xeb9d2d30, 0x2d88, 0x11d3, { 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \␊ |
298 | }␊ |
299 | ␊ |
300 | #define EFI_ACPI_20_TABLE_GUID \␊ |
301 | { \␊ |
302 | 0x8868e871, 0xe4f1, 0x11d3, { 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \␊ |
303 | }␊ |
304 | ␊ |
305 | EFI_GUID gEfiAcpiTableGuid = EFI_ACPI_TABLE_GUID;␊ |
306 | EFI_GUID gEfiAcpi20TableGuid = EFI_ACPI_20_TABLE_GUID;␊ |
307 | ␊ |
308 | ␊ |
309 | /*==========================================================================␊ |
310 | * Fake EFI implementation␊ |
311 | */␊ |
312 | ␊ |
313 | /* These should be const but DT__AddProperty takes char* */␊ |
314 | static const char const FIRMWARE_REVISION_PROP[] = "firmware-revision";␊ |
315 | static const char const FIRMWARE_ABI_PROP[] = "firmware-abi";␊ |
316 | static const char const FIRMWARE_VENDOR_PROP[] = "firmware-vendor";␊ |
317 | static const char const FIRMWARE_ABI_PROP_VALUE[] = "EFI64";␊ |
318 | static const char const SYSTEM_ID_PROP[] = "system-id";␊ |
319 | static const char const SYSTEM_SERIAL_PROP[] = "SystemSerialNumber";␊ |
320 | static const char const SYSTEM_TYPE_PROP[] = "system-type";␊ |
321 | static const char const MODEL_PROP[] = "Model";␊ |
322 | ␊ |
323 | ␊ |
324 | /* Get an smbios option string option to convert to EFI_CHAR16 string */␊ |
325 | static EFI_CHAR16* getSmbiosChar16(const char * key, size_t* len)␊ |
326 | {␊ |
327 | const char * src= getStringForKey(key, &bootInfo->smbiosConfig);␊ |
328 | EFI_CHAR16* dst = 0;␊ |
329 | size_t i=0;␊ |
330 | ␊ |
331 | if (!key || !(*key) || !len || !src) return 0;␊ |
332 | ␊ |
333 | *len = strlen(src);␊ |
334 | dst = (EFI_CHAR16*) malloc( ((*len)+1) * 2 );␊ |
335 | for (; i < (*len); i++) dst[i] = src[i];␊ |
336 | dst[(*len)] = '\0';␊ |
337 | *len = ((*len)+1)*2; // return the CHAR16 bufsize in cluding zero terminated CHAR16␊ |
338 | return dst;␊ |
339 | }␊ |
340 | ␊ |
341 | /* Get the SystemID from the bios dmi info */␊ |
342 | static EFI_CHAR8* getSmbiosUUID()␊ |
343 | {␊ |
344 | ␉SMBByte␉␉␉␉*p;␊ |
345 | ␉int␉␉␉␉␉i, isZero, isOnes;␊ |
346 | ␉static EFI_CHAR8␉uuid[UUID_LEN];␊ |
347 | ␊ |
348 | ␉p = (SMBByte*)Platform.UUID;␊ |
349 | ␉if (p==NULL) return NULL;␊ |
350 | ␊ |
351 | ␉for (i=0, isZero=1, isOnes=1; i<UUID_LEN; i++) {␊ |
352 | ␉␉if (p[i] != 0x00) isZero = 0;␊ |
353 | ␉␉if (p[i] != 0xff) isOnes = 0;␊ |
354 | ␉}␊ |
355 | ␉if (isZero || isOnes) {␉/* empty or setable means: no uuid present */␊ |
356 | ␉␉verbose("No UUID present in SMBIOS System Information Table\n");␊ |
357 | ␉␉return 0;␊ |
358 | ␉}␊ |
359 | ␊ |
360 | ␉memcpy(uuid, p, UUID_LEN);␊ |
361 | ␉return uuid;␊ |
362 | }␊ |
363 | ␊ |
364 | /* return a binary UUID value from the overriden SystemID and SMUUID if found, ␊ |
365 | * or from the bios if not, or from a fixed value if no bios value is found ␊ |
366 | */␊ |
367 | static EFI_CHAR8* getSystemID()␊ |
368 | { // unable to determine UUID for host. Error: 35 fix␊ |
369 | ␊ |
370 | // Rek: new SMsystemid option conforming to smbios notation standards, this option should␊ |
371 | // belong to smbios config only ...␊ |
372 | const char * sysId = getStringForKey(kSystemID, &bootInfo->bootConfig);␊ |
373 | EFI_CHAR8* ret = getUUIDFromString(sysId);␊ |
374 | ␊ |
375 | if(!sysId || !ret) { // try bios dmi info UUID extraction ␊ |
376 | ret = getSmbiosUUID();␊ |
377 | sysId = 0;␊ |
378 | }␊ |
379 | if(!ret) // no bios dmi UUID available, set a fixed value for system-id␊ |
380 | ret=getUUIDFromString((sysId = (const char*) SYSTEM_ID));␊ |
381 | ␊ |
382 | verbose("Customizing SystemID with : %s\n", getStringFromUUID(ret)); // apply a nice formatting to the displayed output␊ |
383 | return ret;␊ |
384 | }␊ |
385 | ␊ |
386 | // must be called AFTER setup Acpi because we need to take care of correct facp content to reflect in ioregs␊ |
387 | void setupSystemType()␊ |
388 | {␊ |
389 | Node *node = DT__FindNode("/", false);␊ |
390 | if (node == 0) stop("Couldn't get root node");␊ |
391 | // we need to write this property after facp parsing␊ |
392 | /* Export system-type only if it has been overrriden by the SystemType option */␊ |
393 | DT__AddProperty(node, SYSTEM_TYPE_PROP, sizeof(Platform.Type), &Platform.Type);␊ |
394 | }␊ |
395 | ␊ |
396 | void setupEfiDeviceTree(void)␊ |
397 | {␊ |
398 | EFI_CHAR16* ret16=0;␊ |
399 | EFI_CHAR8* ret=0;␊ |
400 | size_t len=0;␊ |
401 | Node *node;␊ |
402 | ␊ |
403 | node = DT__FindNode("/", false);␊ |
404 | ␊ |
405 | if (node == 0) stop("Couldn't get root node");␊ |
406 | ␊ |
407 | /* We could also just do DT__FindNode("/efi/platform", true)␊ |
408 | * But I think eventually we want to fill stuff in the efi node␊ |
409 | * too so we might as well create it so we have a pointer for it too.␊ |
410 | */␊ |
411 | node = DT__AddChild(node, "efi");␊ |
412 | ␊ |
413 | DT__AddProperty(node, FIRMWARE_REVISION_PROP, sizeof(FIRMWARE_REVISION), (EFI_UINT32*)&FIRMWARE_REVISION);␊ |
414 | DT__AddProperty(node, FIRMWARE_ABI_PROP, sizeof(FIRMWARE_ABI_PROP_VALUE), (char*)FIRMWARE_ABI_PROP_VALUE);␊ |
415 | DT__AddProperty(node, FIRMWARE_VENDOR_PROP, sizeof(FIRMWARE_VENDOR), (EFI_CHAR16*)FIRMWARE_VENDOR);␊ |
416 | ␊ |
417 | /* TODO: Fill in other efi properties if necessary */␊ |
418 | ␊ |
419 | /* Set up the /efi/runtime-services table node similar to the way a child node of configuration-table␊ |
420 | * is set up. That is, name and table properties */␊ |
421 | Node *runtimeServicesNode = DT__AddChild(node, "runtime-services");␊ |
422 | ␊ |
423 | /* The value of the table property is the 32-bit physical address for the RuntimeServices table.␊ |
424 | * Since the EFI system table already has a pointer to it, we simply use the address of that pointer␊ |
425 | * for the pointer to the property data. Warning.. DT finalization calls free on that but we're not␊ |
426 | * the only thing to use a non-malloc'd pointer for something in the DT␊ |
427 | */␊ |
428 | DT__AddProperty(runtimeServicesNode, "table", sizeof(uint64_t), &gST->RuntimeServices);␊ |
429 | ␊ |
430 | /* Set up the /efi/configuration-table node which will eventually have several child nodes for␊ |
431 | * all of the configuration tables needed by various kernel extensions.␊ |
432 | */␊ |
433 | gEfiConfigurationTableNode = DT__AddChild(node, "configuration-table");␊ |
434 | ␊ |
435 | /* Now fill in the /efi/platform Node */␊ |
436 | Node *efiPlatformNode = DT__AddChild(node, "platform");␊ |
437 | ␊ |
438 | /* NOTE WELL: If you do add FSB Frequency detection, make sure to store␊ |
439 | * the value in the fsbFrequency global and not an malloc'd pointer␊ |
440 | * because the DT_AddProperty function does not copy its args.␊ |
441 | */␊ |
442 | if(Platform.CPU.FSBFrequency != 0) ␊ |
443 | DT__AddProperty(efiPlatformNode, FSB_Frequency_prop, sizeof(uint64_t), &Platform.CPU.FSBFrequency);␊ |
444 | ␊ |
445 | /* Export TSC and CPU frequencies for use by the kernel or KEXTs */␊ |
446 | if(Platform.CPU.TSCFrequency != 0) ␊ |
447 | DT__AddProperty(efiPlatformNode, TSC_Frequency_prop, sizeof(uint64_t), &Platform.CPU.TSCFrequency);␊ |
448 | ␊ |
449 | if(Platform.CPU.CPUFrequency != 0) ␊ |
450 | DT__AddProperty(efiPlatformNode, CPU_Frequency_prop, sizeof(uint64_t), &Platform.CPU.CPUFrequency);␊ |
451 | ␊ |
452 | /* Export system-id. Can be disabled with system-id=No in com.apple.Boot.plist */␊ |
453 | if((ret=getSystemID()))␊ |
454 | DT__AddProperty(efiPlatformNode, SYSTEM_ID_PROP, UUID_LEN, (EFI_UINT32*) ret);␊ |
455 | ␊ |
456 | /* Export SystemSerialNumber if present */␊ |
457 | if ((ret16=getSmbiosChar16("SMserial", &len)))␊ |
458 | DT__AddProperty(efiPlatformNode, SYSTEM_SERIAL_PROP, len, ret16);␊ |
459 | ␊ |
460 | /* Export Model if present */␊ |
461 | if ((ret16=getSmbiosChar16("SMproductname", &len)))␊ |
462 | DT__AddProperty(efiPlatformNode, MODEL_PROP, len, ret16);␊ |
463 | ␊ |
464 | /* Fill /efi/device-properties node.␊ |
465 | */␊ |
466 | setupDeviceProperties(node);␊ |
467 | }␊ |
468 | ␊ |
469 | /* Load the smbios.plist override config file if any */␊ |
470 | static void setupSmbiosConfigFile()␊ |
471 | {␊ |
472 | const char * value = getStringForKey(kSMBIOS, &bootInfo->bootConfig);␊ |
473 | extern void scan_mem();␊ |
474 | ␊ |
475 | if (!value) value = "/Extra/smbios.plist";␊ |
476 | if (loadConfigFile(value, &bootInfo->smbiosConfig) == -1) {␊ |
477 | verbose("No SMBIOS replacement found\n");␊ |
478 | }␊ |
479 | ␊ |
480 | // get a chance to scan mem dynamically if user asks for it while having the config options loaded as well␊ |
481 | // as opposed to when it was in scan_platform(), also load the orig. smbios so that we can access dmi info without␊ |
482 | // patching the smbios yet␊ |
483 | ␊ |
484 | scan_mem(); ␊ |
485 | }␊ |
486 | ␊ |
487 | /* Installs all the needed configuration table entries */␊ |
488 | static void setupEfiConfigurationTable()␊ |
489 | {␊ |
490 | ␉smbios_p = (EFI_PTR32)getSmbios(SMBIOS_PATCHED);␊ |
491 | ␉addConfigurationTable(&gEfiSmbiosTableGuid, &smbios_p, NULL);␊ |
492 | ␊ |
493 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
494 | ␉setupAcpi();␊ |
495 | ␊ |
496 | ␉// We've obviously changed the count.. so fix up the CRC32␊ |
497 | ␉fixupEfiSystemTableCRC32(gST);␊ |
498 | }␊ |
499 | ␊ |
500 | ␊ |
501 | /* Entrypoint from boot.c */␊ |
502 | void setupFakeEfi(void)␊ |
503 | {␊ |
504 | ␉// Generate efi device strings ␊ |
505 | ␉setup_pci_devs(root_pci_dev);␊ |
506 | ␊ |
507 | readSMBIOSInfo(getSmbios(SMBIOS_ORIGINAL));␊ |
508 | ␊ |
509 | ␉// load smbios.plist file if any␊ |
510 | ␉setupSmbiosConfigFile();␊ |
511 | ␊ |
512 | ␉setupSMBIOSTable();␊ |
513 | ␊ |
514 | ␉// Initialize the base table␊ |
515 | ␉setupEfiTables();␊ |
516 | ␊ |
517 | ␉// Initialize the device tree␊ |
518 | ␉setupEfiDeviceTree();␊ |
519 | ␊ |
520 | ␉// Add configuration table entries to both the services table and the device tree␊ |
521 | ␉setupEfiConfigurationTable();␊ |
522 | }␊ |
523 | ␊ |
524 | |