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Source at commit 106 created 14 years 2 months ago. By diebuche, Adding 915patch and edid | |
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1 | /*␊ |
2 | * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * @APPLE_LICENSE_HEADER_START@␊ |
5 | * ␊ |
6 | * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
7 | * Reserved. This file contains Original Code and/or Modifications of␊ |
8 | * Original Code as defined in and that are subject to the Apple Public␊ |
9 | * Source License Version 2.0 (the "License"). You may not use this file␊ |
10 | * except in compliance with the License. Please obtain a copy of the␊ |
11 | * License at http://www.apple.com/publicsource and read it before using␊ |
12 | * this file.␊ |
13 | * ␊ |
14 | * The Original Code and all software distributed under the License are␊ |
15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the␊ |
19 | * License for the specific language governing rights and limitations␊ |
20 | * under the License.␊ |
21 | * ␊ |
22 | * @APPLE_LICENSE_HEADER_END@␊ |
23 | */␊ |
24 | /* ␊ |
25 | * Mach Operating System␊ |
26 | * Copyright (c) 1990 Carnegie-Mellon University␊ |
27 | * Copyright (c) 1989 Carnegie-Mellon University␊ |
28 | * All rights reserved. The CMU software License Agreement specifies␊ |
29 | * the terms and conditions for use and redistribution.␊ |
30 | */␊ |
31 | ␊ |
32 | /*␊ |
33 | * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
34 | *␊ |
35 | * This software is supplied under the terms of a license agreement or ␊ |
36 | * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
37 | * nor disclosed except in accordance with the terms of that agreement.␊ |
38 | *␊ |
39 | * Copyright 1988, 1989 by Intel Corporation␊ |
40 | */␊ |
41 | ␊ |
42 | /*␊ |
43 | * Copyright 1993 NeXT Computer, Inc.␊ |
44 | * All rights reserved.␊ |
45 | */␊ |
46 | ␊ |
47 | /*␊ |
48 | * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊ |
49 | * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
50 | */␊ |
51 | ␊ |
52 | ␊ |
53 | #include "boot.h"␊ |
54 | #include "bootstruct.h"␊ |
55 | #include "fake_efi.h"␊ |
56 | #include "sl.h"␊ |
57 | #include "libsa.h"␊ |
58 | #include "ramdisk.h"␊ |
59 | #include "gui.h"␊ |
60 | #include "graphics.h"␊ |
61 | #include "vbe.h"␊ |
62 | #include "915resolution.h"␊ |
63 | #include "edid.h"␊ |
64 | #include "platform.h"␊ |
65 | ␊ |
66 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
67 | bool gOverrideKernel;␊ |
68 | static char gBootKernelCacheFile[512];␊ |
69 | static char gCacheNameAdler[64 + 256];␊ |
70 | char *gPlatformName = gCacheNameAdler;␊ |
71 | char gRootDevice[512];␊ |
72 | char gMKextName[512];␊ |
73 | char gMacOSVersion[8];␊ |
74 | bool gEnableCDROMRescan;␊ |
75 | bool gScanSingleDrive;␊ |
76 | ␊ |
77 | int bvCount = 0;␊ |
78 | //int␉␉menucount = 0;␊ |
79 | int gDeviceCount = 0; ␊ |
80 | ␊ |
81 | BVRef bvr;␊ |
82 | BVRef menuBVR;␊ |
83 | BVRef bvChain;␊ |
84 | bool useGUI;␊ |
85 | ␊ |
86 | //static void selectBiosDevice(void);␊ |
87 | static unsigned long Adler32(unsigned char *buffer, long length);␊ |
88 | ␊ |
89 | ␊ |
90 | static bool gUnloadPXEOnExit = false;␊ |
91 | ␊ |
92 | /*␊ |
93 | * How long to wait (in seconds) to load the␊ |
94 | * kernel after displaying the "boot:" prompt.␊ |
95 | */␊ |
96 | #define kBootErrorTimeout 5␊ |
97 | ␊ |
98 | /*␊ |
99 | * Default path to kernel cache file␊ |
100 | */␊ |
101 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
102 | ␊ |
103 | //==========================================================================␊ |
104 | // Zero the BSS.␊ |
105 | ␊ |
106 | static void zeroBSS(void)␊ |
107 | {␊ |
108 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
109 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
110 | ␊ |
111 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
112 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
113 | }␊ |
114 | ␊ |
115 | //==========================================================================␊ |
116 | // Malloc error function␊ |
117 | ␊ |
118 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
119 | {␊ |
120 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
121 | }␊ |
122 | ␊ |
123 | //==========================================================================␊ |
124 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
125 | //␊ |
126 | void initialize_runtime(void)␊ |
127 | {␊ |
128 | ␉zeroBSS();␊ |
129 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
130 | }␊ |
131 | ␊ |
132 | //==========================================================================␊ |
133 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
134 | ␊ |
135 | static int ExecKernel(void *binary)␊ |
136 | {␊ |
137 | entry_t kernelEntry;␊ |
138 | int ret;␊ |
139 | ␊ |
140 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
141 | ␊ |
142 | ret = DecodeKernel(binary,␊ |
143 | &kernelEntry,␊ |
144 | (char **) &bootArgs->kaddr,␊ |
145 | (int *)&bootArgs->ksize );␊ |
146 | ␊ |
147 | if ( ret != 0 )␊ |
148 | return ret;␊ |
149 | ␊ |
150 | // Reserve space for boot args␊ |
151 | reserveKernBootStruct();␊ |
152 | ␊ |
153 | // Load boot drivers from the specifed root path.␊ |
154 | ␊ |
155 | if (!gHaveKernelCache) {␊ |
156 | LoadDrivers("/");␊ |
157 | }␊ |
158 | ␊ |
159 | clearActivityIndicator();␊ |
160 | ␊ |
161 | if (gErrors) {␊ |
162 | printf("Errors encountered while starting up the computer.\n");␊ |
163 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
164 | sleep(kBootErrorTimeout);␊ |
165 | }␊ |
166 | ␊ |
167 | setupFakeEfi();␊ |
168 | ␊ |
169 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
170 | ␊ |
171 | // Cleanup the PXE base code.␊ |
172 | ␊ |
173 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
174 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
175 | {␊ |
176 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
177 | sleep(2);␊ |
178 | }␊ |
179 | }␊ |
180 | ␊ |
181 | bool dummyVal;␊ |
182 | if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal) {␊ |
183 | ␉printf("Press any key to continue...");␊ |
184 | ␉getc();␊ |
185 | }␊ |
186 | ␊ |
187 | // If we were in text mode, switch to graphics mode.␊ |
188 | // This will draw the boot graphics unless we are in␊ |
189 | // verbose mode.␊ |
190 | ␊ |
191 | if(gVerboseMode)␊ |
192 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
193 | else␊ |
194 | drawBootGraphics();␊ |
195 | ␉␊ |
196 | finalizeBootStruct();␊ |
197 | ␊ |
198 | // Jump to kernel's entry point. There's no going back now.␊ |
199 | ␊ |
200 | startprog( kernelEntry, bootArgs );␊ |
201 | ␊ |
202 | // Not reached␊ |
203 | ␊ |
204 | return 0;␊ |
205 | }␊ |
206 | ␊ |
207 | //==========================================================================␊ |
208 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
209 | // before. Multiboot does its own runtime initialization, does some of its␊ |
210 | // own things, and then calls common_boot.␊ |
211 | void boot(int biosdev)␊ |
212 | {␊ |
213 | ␉initialize_runtime();␊ |
214 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
215 | ␉enableA20();␊ |
216 | ␉common_boot(biosdev);␊ |
217 | }␊ |
218 | ␊ |
219 | //==========================================================================␊ |
220 | // The 'main' function for the booter. Called by boot0 when booting␊ |
221 | // from a block device, or by the network booter.␊ |
222 | //␊ |
223 | // arguments:␊ |
224 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
225 | // that the booter was loaded from.␊ |
226 | //␊ |
227 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
228 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
229 | // next boot device on its list.␊ |
230 | void common_boot(int biosdev)␊ |
231 | {␊ |
232 | int status;␊ |
233 | char *bootFile;␊ |
234 | unsigned long adler32;␊ |
235 | bool quiet;␊ |
236 | bool firstRun = true;␊ |
237 | bool instantMenu;␊ |
238 | bool rescanPrompt;␊ |
239 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
240 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
241 | ␊ |
242 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
243 | // the base code will result in a hang or kernel panic.␊ |
244 | gUnloadPXEOnExit = true;␊ |
245 | ␊ |
246 | // Record the device that the booter was loaded from.␊ |
247 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
248 | ␊ |
249 | // Initialize boot info structure.␊ |
250 | initKernBootStruct();␊ |
251 | ␊ |
252 | // Setup VGA text mode.␊ |
253 | // Not sure if it is safe to call setVideoMode() before the␊ |
254 | // config table has been loaded. Call video_mode() instead.␊ |
255 | #if DEBUG␊ |
256 | printf("before video_mode\n");␊ |
257 | #endif␊ |
258 | video_mode( 2 ); // 80x25 mono text mode.␊ |
259 | #if DEBUG␊ |
260 | printf("after video_mode\n");␊ |
261 | #endif␊ |
262 | ␊ |
263 | // Scan and record the system's hardware information.␊ |
264 | scan_platform();␊ |
265 | ␊ |
266 | // First get info for boot volume.␊ |
267 | scanBootVolumes(gBIOSDev, 0);␊ |
268 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
269 | setBootGlobals(bvChain);␊ |
270 | ␊ |
271 | // Load boot.plist config file␊ |
272 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
273 | ␊ |
274 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
275 | gBootMode |= kBootModeQuiet;␊ |
276 | }␊ |
277 | ␊ |
278 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
279 | if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
280 | firstRun = false;␊ |
281 | }␊ |
282 | ␊ |
283 | // Loading preboot ramdisk if exists.␊ |
284 | loadPrebootRAMDisk();␊ |
285 | ␊ |
286 | // Disable rescan option by default␊ |
287 | gEnableCDROMRescan = false;␊ |
288 | ␊ |
289 | // Enable it with Rescan=y in system config␊ |
290 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
291 | gEnableCDROMRescan = true;␊ |
292 | }␊ |
293 | ␊ |
294 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
295 | rescanPrompt = false;␊ |
296 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
297 | gEnableCDROMRescan = promptForRescanOption();␊ |
298 | }␊ |
299 | ␊ |
300 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
301 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
302 | gScanSingleDrive = true;␊ |
303 | }␊ |
304 | ␊ |
305 | // Create a list of partitions on device(s).␊ |
306 | if (gScanSingleDrive) {␊ |
307 | scanBootVolumes(gBIOSDev, &bvCount);␊ |
308 | } else {␊ |
309 | scanDisks(gBIOSDev, &bvCount);␊ |
310 | }␊ |
311 | ␊ |
312 | // Create a separated bvr chain using the specified filters.␊ |
313 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
314 | ␊ |
315 | gBootVolume = selectBootVolume(bvChain);␊ |
316 | ␊ |
317 | #if DEBUG␊ |
318 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
319 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
320 | getc();␊ |
321 | #endif␊ |
322 | ␊ |
323 | useGUI = true;␊ |
324 | // Override useGUI default␊ |
325 | getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);␊ |
326 | ␊ |
327 | ␉␊ |
328 | ␉␊ |
329 | ␉// Before initGui, path the video bios with the correct resolution␊ |
330 | ␉␊ |
331 | ␉UInt32 x = 0, y = 0; ␊ |
332 | ␉UInt32 bp = 0;␊ |
333 | ␉␊ |
334 | ␉getResolution(&x, &y, &bp);␊ |
335 | ␉␊ |
336 | ␉␊ |
337 | ␉if (x!=0 && y!=0) {␊ |
338 | ␉␉vbios_map * map;␊ |
339 | ␉␉␊ |
340 | ␉␉map = open_vbios(CT_UNKWN);␊ |
341 | ␉␉␊ |
342 | ␉␉unlock_vbios(map);␊ |
343 | ␉␉␊ |
344 | ␉␉set_mode(map, x, y, bp, 0, 0);␊ |
345 | ␉␉␊ |
346 | ␉␉relock_vbios(map);␊ |
347 | ␉␉␊ |
348 | ␉␉close_vbios(map);␊ |
349 | ␉␉␊ |
350 | ␉␉verbose("Patched first resolution mode to %dx%d.\n", x, y);␊ |
351 | ␉␉␊ |
352 | ␉␉␊ |
353 | ␉}␊ |
354 | ␉␊ |
355 | ␉␊ |
356 | ␉//printf("Press any key to continue...");␊ |
357 | ␉//getc();␊ |
358 | ␉␊ |
359 | ␉// Try initialising the GUI unless disabled␊ |
360 | ␉␊ |
361 | ␉␊ |
362 | ␉if (useGUI) {␊ |
363 | /* XXX AsereBLN handle error */␊ |
364 | ␉initGUI();␊ |
365 | }␊ |
366 | ␊ |
367 | setBootGlobals(bvChain);␊ |
368 | ␊ |
369 | // Parse args, load and start kernel.␊ |
370 | while (1) {␊ |
371 | const char *val;␊ |
372 | int len;␊ |
373 | int trycache;␊ |
374 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
375 | int ret = -1;␊ |
376 | void *binary = (void *)kLoadAddr;␊ |
377 | bool tryresume;␊ |
378 | bool tryresumedefault;␊ |
379 | bool forceresume;␊ |
380 | ␊ |
381 | config_file_t systemVersion;␉␉// system.plist of booting partition␊ |
382 | ␊ |
383 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
384 | char bootFileSpec[512];␊ |
385 | ␉␉␊ |
386 | // Initialize globals.␊ |
387 | ␊ |
388 | sysConfigValid = false;␊ |
389 | gErrors = false;␊ |
390 | ␊ |
391 | status = getBootOptions(firstRun);␊ |
392 | firstRun = false;␊ |
393 | if (status == -1) continue;␊ |
394 | ␉␉ ␊ |
395 | status = processBootOptions();␊ |
396 | // Status==1 means to chainboot␊ |
397 | if ( status == 1 ) break;␊ |
398 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
399 | if ( status == -1 )␊ |
400 | {␊ |
401 | // gBootVolume == NULL usually means the user hit escape.␊ |
402 | if(gBootVolume == NULL)␊ |
403 | {␊ |
404 | freeFilteredBVChain(bvChain);␊ |
405 | ␊ |
406 | if (gEnableCDROMRescan)␊ |
407 | rescanBIOSDevice(gBIOSDev);␊ |
408 | ␊ |
409 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
410 | setBootGlobals(bvChain);␊ |
411 | }␊ |
412 | continue;␊ |
413 | }␊ |
414 | ␉␉␊ |
415 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
416 | ␉␉␊ |
417 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
418 | ␉␉␉drawBackground();␊ |
419 | ␉␉␉␊ |
420 | // Found and loaded a config file. Proceed with boot.␊ |
421 | ␊ |
422 | ␉␉// Turn off any GUI elements␊ |
423 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
424 | ␉␉{␊ |
425 | ␉␉␉gui.devicelist.draw = false;␊ |
426 | ␉␉␉gui.bootprompt.draw = false;␊ |
427 | ␉␉␉gui.menu.draw = false;␊ |
428 | ␉␉␉gui.infobox.draw = false;␊ |
429 | ␉␉␉drawBackground();␊ |
430 | ␉␉␉updateVRAM();␊ |
431 | ␉␉}␊ |
432 | ␉␉␊ |
433 | ␉␉// Find out which version mac os we're booting.␊ |
434 | ␉␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion)) {␊ |
435 | ␉␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion)) {␉␊ |
436 | ␉␉␉␉// getValueForKey uses const char for val␊ |
437 | ␉␉␉␉// so copy it and trim␊ |
438 | ␉␉␉␉strncpy(gMacOSVersion, val, MIN(len, 4));␊ |
439 | ␉␉␉␉gMacOSVersion[MIN(len, 4)] = '\0';␊ |
440 | ␉␉␉}␊ |
441 | ␉␉}␊ |
442 | ␊ |
443 | ␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊ |
444 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
445 | ␉␉} else {␊ |
446 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
447 | ␉␉}␊ |
448 | ␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊ |
449 | ␉␉␉if (strncmp(val, "i386", 4) == 0) {␊ |
450 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
451 | ␉␉␉}␊ |
452 | ␉␉}␊ |
453 | ␉␉if (getValueForKey(k32BitModeFlag, &val, &len, &bootInfo->bootConfig)) {␊ |
454 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
455 | ␉␉}␊ |
456 | ␉␉␊ |
457 | ␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊ |
458 | ␉␉␉tryresume = true;␊ |
459 | ␉␉␉tryresumedefault = true;␊ |
460 | ␉␉} else {␊ |
461 | ␉␉␉tryresumedefault = false;␊ |
462 | ␉␉}␊ |
463 | ␊ |
464 | ␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊ |
465 | ␉␉␉forceresume = false;␊ |
466 | ␉␉}␊ |
467 | ␉␉␊ |
468 | ␉␉if (forceresume) {␊ |
469 | ␉␉␉tryresume = true;␊ |
470 | ␉␉␉tryresumedefault = false;␊ |
471 | ␉␉}␊ |
472 | ␉␉␊ |
473 | ␉␉while (tryresume) {␊ |
474 | ␉␉␉const char *tmp;␊ |
475 | ␉␉␉BVRef bvr;␊ |
476 | ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊ |
477 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
478 | ␉␉␉␊ |
479 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
480 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
481 | ␊ |
482 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
483 | ␉␉␉␉break;␊ |
484 | ␉␉␉␊ |
485 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
486 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
487 | ␉␉␉␉break;␊ |
488 | ␉␉␉␊ |
489 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
490 | ␉␉␉␉break;␊ |
491 | ␉␉␉␊ |
492 | ␉␉␉if (!forceresume && ((sleeptime+3) < bvr->modTime)) {␉␊ |
493 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
494 | ␉␉␉␉break;␊ |
495 | ␉␉␉}␊ |
496 | ␉␉␉␉␊ |
497 | ␉␉␉HibernateBoot((char *)val);␊ |
498 | ␉␉␉break;␊ |
499 | ␉␉}␊ |
500 | ␊ |
501 | // Reset cache name.␊ |
502 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
503 | ␊ |
504 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
505 | ␊ |
506 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
507 | ␊ |
508 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
509 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
510 | } else {␊ |
511 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
512 | }␊ |
513 | ␊ |
514 | // Check for cache file.␊ |
515 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
516 | !gOverrideKernel &&␊ |
517 | (gBootFileType == kBlockDeviceType) &&␊ |
518 | (gMKextName[0] == '\0') &&␊ |
519 | (gBootKernelCacheFile[0] != '\0'));␊ |
520 | ␊ |
521 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
522 | ␉␉␊ |
523 | if (trycache) do {␊ |
524 | ␊ |
525 | // if we haven't found the kernel yet, don't use the cache␊ |
526 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
527 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
528 | trycache = 0;␊ |
529 | break;␊ |
530 | }␊ |
531 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
532 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
533 | || (cachetime < kerneltime)) {␊ |
534 | trycache = 0;␊ |
535 | break;␊ |
536 | }␊ |
537 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
538 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
539 | && (cachetime < exttime)) {␊ |
540 | trycache = 0;␊ |
541 | break;␊ |
542 | }␊ |
543 | if (kerneltime > exttime) {␊ |
544 | exttime = kerneltime;␊ |
545 | }␊ |
546 | if (cachetime != (exttime + 1)) {␊ |
547 | trycache = 0;␊ |
548 | break;␊ |
549 | }␊ |
550 | } while (0);␊ |
551 | ␊ |
552 | do {␊ |
553 | if (trycache) {␊ |
554 | bootFile = gBootKernelCacheFile;␊ |
555 | verbose("Loading kernel cache %s\n", bootFile);␊ |
556 | ret = LoadFile(bootFile);␊ |
557 | binary = (void *)kLoadAddr;␊ |
558 | if (ret >= 0) {␊ |
559 | break;␊ |
560 | }␊ |
561 | }␊ |
562 | bootFile = bootInfo->bootFile;␊ |
563 | ␊ |
564 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
565 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
566 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
567 | ␉ ␉ if (ret == -1)␊ |
568 | ␉ ␉ {␊ |
569 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
570 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
571 | if (ret == -1)␊ |
572 | {␊ |
573 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
574 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
575 | if (ret == -1)␊ |
576 | {␊ |
577 | // Not found any alternate locations, using the original kernel image path.␊ |
578 | strcpy(bootFileSpec, bootFile);␊ |
579 | }␊ |
580 | }␊ |
581 | }␊ |
582 | ␉␉␉␊ |
583 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
584 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
585 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
586 | {␊ |
587 | archCpuType = CPU_TYPE_I386;␊ |
588 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
589 | }␊ |
590 | ␉␉␉␊ |
591 | } while (0);␊ |
592 | ␊ |
593 | clearActivityIndicator();␊ |
594 | #if DEBUG␊ |
595 | printf("Pausing...");␊ |
596 | sleep(8);␊ |
597 | #endif␊ |
598 | ␊ |
599 | if (ret <= 0) {␊ |
600 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
601 | ␊ |
602 | ␉␉␉if(gui.initialised) {␊ |
603 | ␉␉␉␉sleep(1);␊ |
604 | ␉␉␉␉drawBackground();␊ |
605 | ␉␉␉␉gui.devicelist.draw = true;␊ |
606 | ␉␉␉␉gui.redraw = true;␊ |
607 | ␉␉␉}␊ |
608 | if (gBootFileType == kNetworkDeviceType) {␊ |
609 | // Return control back to PXE. Don't unload PXE base code.␊ |
610 | gUnloadPXEOnExit = false;␊ |
611 | break;␊ |
612 | }␊ |
613 | } else {␊ |
614 | /* Won't return if successful. */␊ |
615 | ret = ExecKernel(binary);␊ |
616 | }␊ |
617 | }␊ |
618 | ␊ |
619 | // chainboot␊ |
620 | if (status==1) {␊ |
621 | ␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
622 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
623 | ␉}␊ |
624 | }␊ |
625 | ␉␊ |
626 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
627 | ␉nbpUnloadBaseCode();␊ |
628 | }␊ |
629 | }␊ |
630 | ␊ |
631 | /*!␊ |
632 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
633 | */␊ |
634 | /*␊ |
635 | static void selectBiosDevice(void)␊ |
636 | {␊ |
637 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
638 | CacheReset();␊ |
639 | diskFreeMap(oldMap);␊ |
640 | oldMap = NULL;␊ |
641 | ␊ |
642 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
643 | ␊ |
644 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
645 | BVRef bootVol = selectBootVolume(bvchain);␊ |
646 | gBootVolume = bootVol;␊ |
647 | setRootVolume(bootVol);␊ |
648 | gBIOSDev = dev;␊ |
649 | }␊ |
650 | */␊ |
651 | ␊ |
652 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
653 | #define NMAX 5000␊ |
654 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
655 | ␊ |
656 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
657 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
658 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
659 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
660 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
661 | ␊ |
662 | unsigned long Adler32(unsigned char *buf, long len)␊ |
663 | {␊ |
664 | unsigned long s1 = 1; // adler & 0xffff;␊ |
665 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
666 | unsigned long result;␊ |
667 | int k;␊ |
668 | ␊ |
669 | while (len > 0) {␊ |
670 | k = len < NMAX ? len : NMAX;␊ |
671 | len -= k;␊ |
672 | while (k >= 16) {␊ |
673 | DO16(buf);␊ |
674 | buf += 16;␊ |
675 | k -= 16;␊ |
676 | }␊ |
677 | if (k != 0) do {␊ |
678 | s1 += *buf++;␊ |
679 | s2 += s1;␊ |
680 | } while (--k);␊ |
681 | s1 %= BASE;␊ |
682 | s2 %= BASE;␊ |
683 | }␊ |
684 | result = (s2 << 16) | s1;␊ |
685 | return OSSwapHostToBigInt32(result);␊ |
686 | }␊ |
687 |