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 | ␊ |
65 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
66 | BOOL gOverrideKernel;␊ |
67 | static char gBootKernelCacheFile[512];␊ |
68 | static char gCacheNameAdler[64 + 256];␊ |
69 | char *gPlatformName = gCacheNameAdler;␊ |
70 | char gRootDevice[512];␊ |
71 | char gMKextName[512];␊ |
72 | char gMacOSVersion[8];␊ |
73 | BOOL gEnableCDROMRescan;␊ |
74 | BOOL gScanSingleDrive;␊ |
75 | ␊ |
76 | int bvCount = 0;␊ |
77 | //int␉␉menucount = 0;␊ |
78 | int gDeviceCount = 0; ␊ |
79 | ␊ |
80 | BVRef bvr;␊ |
81 | BVRef menuBVR;␊ |
82 | BVRef bvChain;␊ |
83 | BOOL useGUI = TRUE;␊ |
84 | ␊ |
85 | //static void selectBiosDevice(void);␊ |
86 | ␊ |
87 | static␊ |
88 | unsigned long Adler32(unsigned char *buffer, long length);␊ |
89 | ␊ |
90 | ␊ |
91 | static BOOL gUnloadPXEOnExit = 0;␊ |
92 | ␊ |
93 | /*␊ |
94 | * How long to wait (in seconds) to load the␊ |
95 | * kernel after displaying the "boot:" prompt.␊ |
96 | */␊ |
97 | #define kBootErrorTimeout 5␊ |
98 | ␊ |
99 | /*␊ |
100 | * Default path to kernel cache file␊ |
101 | */␊ |
102 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
103 | ␊ |
104 | //==========================================================================␊ |
105 | // Zero the BSS.␊ |
106 | ␊ |
107 | static void zeroBSS()␊ |
108 | {␊ |
109 | extern char _DATA__bss__begin, _DATA__bss__end;␊ |
110 | extern char _DATA__common__begin, _DATA__common__end;␊ |
111 | ␊ |
112 | bzero( &_DATA__bss__begin,␊ |
113 | (&_DATA__bss__end - &_DATA__bss__begin) );␊ |
114 | ␊ |
115 | bzero( &_DATA__common__begin, ␊ |
116 | (&_DATA__common__end - &_DATA__common__begin) );␊ |
117 | }␊ |
118 | ␊ |
119 | //==========================================================================␊ |
120 | // Malloc error function␊ |
121 | ␊ |
122 | static void malloc_error(char *addr, size_t size)␊ |
123 | {␊ |
124 | printf("\nMemory allocation error (0x%x, 0x%x)\n",␊ |
125 | (unsigned)addr, (unsigned)size);␊ |
126 | asm volatile ("hlt");␊ |
127 | }␊ |
128 | ␊ |
129 | /*!␊ |
130 | Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
131 | */␊ |
132 | void initialize_runtime()␊ |
133 | {␊ |
134 | zeroBSS();␊ |
135 | ␊ |
136 | // Initialize malloc␊ |
137 | malloc_init(0, 0, 0, malloc_error);␊ |
138 | }␊ |
139 | ␊ |
140 | //==========================================================================␊ |
141 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
142 | ␊ |
143 | static int ExecKernel(void *binary)␊ |
144 | {␊ |
145 | entry_t kernelEntry;␊ |
146 | int ret;␊ |
147 | ␊ |
148 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
149 | ␊ |
150 | ret = DecodeKernel(binary,␊ |
151 | &kernelEntry,␊ |
152 | (char **) &bootArgs->kaddr,␊ |
153 | (int *)&bootArgs->ksize );␊ |
154 | ␊ |
155 | if ( ret != 0 )␊ |
156 | return ret;␊ |
157 | ␊ |
158 | // Reserve space for boot args␊ |
159 | reserveKernBootStruct();␊ |
160 | ␊ |
161 | // Load boot drivers from the specifed root path.␊ |
162 | ␊ |
163 | if (!gHaveKernelCache) {␊ |
164 | LoadDrivers("/");␊ |
165 | }␊ |
166 | ␊ |
167 | clearActivityIndicator();␊ |
168 | ␊ |
169 | if (gErrors) {␊ |
170 | printf("Errors encountered while starting up the computer.\n");␊ |
171 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
172 | sleep(kBootErrorTimeout);␊ |
173 | }␊ |
174 | ␊ |
175 | setupFakeEfi();␊ |
176 | ␊ |
177 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
178 | ␊ |
179 | // Cleanup the PXE base code.␊ |
180 | ␊ |
181 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
182 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
183 | {␊ |
184 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
185 | sleep(2);␊ |
186 | }␊ |
187 | }␊ |
188 | ␊ |
189 | ␉BOOL dummyVal;␊ |
190 | ␊ |
191 | if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊ |
192 | {␊ |
193 | printf("Press any key to continue...");␊ |
194 | getc();␊ |
195 | }␊ |
196 | ␊ |
197 | // If we were in text mode, switch to graphics mode.␊ |
198 | // This will draw the boot graphics unless we are in␊ |
199 | // verbose mode.␊ |
200 | ␊ |
201 | if(gVerboseMode)␊ |
202 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
203 | else␊ |
204 | drawBootGraphics();␊ |
205 | ␉␊ |
206 | finalizeBootStruct();␊ |
207 | ␊ |
208 | // Jump to kernel's entry point. There's no going back now.␊ |
209 | ␊ |
210 | startprog( kernelEntry, bootArgs );␊ |
211 | ␊ |
212 | // Not reached␊ |
213 | ␊ |
214 | return 0;␊ |
215 | }␊ |
216 | ␊ |
217 | //==========================================================================␊ |
218 | // Scan and record the system's hardware information.␊ |
219 | ␊ |
220 | static void scanHardware()␊ |
221 | {␊ |
222 | ␉extern void scan_platform();␊ |
223 | ␊ |
224 | ␉scan_platform();␊ |
225 | }␊ |
226 | ␊ |
227 | /*!␊ |
228 | This is the entrypoint from real-mode which functions exactly as it did before.␊ |
229 | Multiboot does its own runtime initialization, does some of its own things, and then␊ |
230 | calls common_boot.␊ |
231 | */␊ |
232 | void boot(int biosdev)␊ |
233 | {␊ |
234 | initialize_runtime();␊ |
235 | ␊ |
236 | // Enable A20 gate before accessing memory above 1Mb.␊ |
237 | enableA20();␊ |
238 | ␊ |
239 | return common_boot(biosdev);␊ |
240 | }␊ |
241 | ␊ |
242 | //==========================================================================␊ |
243 | // The 'main' function for the booter. Called by boot0 when booting␊ |
244 | // from a block device, or by the network booter.␊ |
245 | //␊ |
246 | // arguments:␊ |
247 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
248 | // that the booter was loaded from.␊ |
249 | //␊ |
250 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
251 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
252 | // next boot device on its list.␊ |
253 | ␊ |
254 | #define DLOG(x) outb(0x80, (x))␊ |
255 | ␊ |
256 | void common_boot(int biosdev)␊ |
257 | {␊ |
258 | int status;␊ |
259 | char *bootFile;␊ |
260 | unsigned long adler32;␊ |
261 | BOOL quiet;␊ |
262 | BOOL firstRun = YES;␊ |
263 | BOOL instantMenu;␊ |
264 | BOOL rescanPrompt;␊ |
265 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
266 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
267 | ␊ |
268 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
269 | // the base code will result in a hang or kernel panic.␊ |
270 | ␊ |
271 | gUnloadPXEOnExit = 1;␊ |
272 | ␊ |
273 | // Record the device that the booter was loaded from.␊ |
274 | ␊ |
275 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
276 | ␊ |
277 | // Initialize boot info structure.␊ |
278 | ␊ |
279 | initKernBootStruct();␊ |
280 | ␊ |
281 | // Setup VGA text mode.␊ |
282 | // Not sure if it is safe to call setVideoMode() before the␊ |
283 | // config table has been loaded. Call video_mode() instead.␊ |
284 | ␊ |
285 | #if DEBUG␊ |
286 | printf("before video_mode\n");␊ |
287 | #endif␊ |
288 | video_mode( 2 ); // 80x25 mono text mode.␊ |
289 | #if DEBUG␊ |
290 | printf("after video_mode\n");␊ |
291 | #endif␊ |
292 | ␊ |
293 | // Check to see that this hardware is supported.␊ |
294 | status = checkForSupportedHardware();␊ |
295 | if (status != 0) {␊ |
296 | printf("This hardware configuration is not supported by Darwin/x86. (%d)", status);␊ |
297 | }␊ |
298 | ␊ |
299 | // First get info for boot volume.␊ |
300 | scanBootVolumes(gBIOSDev, 0);␊ |
301 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
302 | setBootGlobals(bvChain);␊ |
303 | ␊ |
304 | // Load boot.plist config file␊ |
305 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
306 | ␊ |
307 | if ( getBoolForKey( kQuietBootKey, &quiet, &bootInfo->bootConfig ) && quiet ) {␊ |
308 | gBootMode |= kBootModeQuiet;␊ |
309 | }␊ |
310 | ␊ |
311 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
312 | if ( getBoolForKey( kInsantMenuKey, &instantMenu, &bootInfo->bootConfig ) && instantMenu ) {␊ |
313 | firstRun = FALSE;␊ |
314 | }␊ |
315 | ␊ |
316 | // Loading preboot ramdisk if exists.␊ |
317 | loadPrebootRAMDisk();␊ |
318 | ␊ |
319 | // Disable rescan option by default␊ |
320 | gEnableCDROMRescan = FALSE;␊ |
321 | ␊ |
322 | // Enable it with Rescan=y in system config␊ |
323 | if ( getBoolForKey( kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig ) && gEnableCDROMRescan ) {␊ |
324 | gEnableCDROMRescan = TRUE;␊ |
325 | }␊ |
326 | ␊ |
327 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
328 | rescanPrompt = FALSE;␊ |
329 | if ( getBoolForKey( kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig ) && rescanPrompt␊ |
330 | && biosDevIsCDROM(gBIOSDev) ) {␊ |
331 | gEnableCDROMRescan = promptForRescanOption();␊ |
332 | }␊ |
333 | ␊ |
334 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
335 | if ( getBoolForKey( kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig ) && gScanSingleDrive ) {␊ |
336 | gScanSingleDrive = TRUE;␊ |
337 | }␊ |
338 | ␊ |
339 | // Create a list of partitions on device(s).␊ |
340 | if (gScanSingleDrive)␊ |
341 | scanBootVolumes( gBIOSDev, &bvCount );␊ |
342 | else␊ |
343 | scanDisks( gBIOSDev, &bvCount );␊ |
344 | ␊ |
345 | // Create a separated bvr chain using the specified filters.␊ |
346 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
347 | ␊ |
348 | gBootVolume = selectBootVolume(bvChain);␊ |
349 | ␊ |
350 | #if DEBUG␊ |
351 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
352 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
353 | getc();␊ |
354 | #endif␊ |
355 | ␊ |
356 | ␉// Scan hardware configuration.␊ |
357 | scanHardware();␊ |
358 | ␉␊ |
359 | ␉// Check if GUI=n switch is present in config file␊ |
360 | if ( getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig) && !useGUI )␊ |
361 | useGUI = FALSE;␊ |
362 | ␉␉␊ |
363 | ␉// Before initGui, path the video bios with the correct resolution␊ |
364 | ␉␊ |
365 | ␉UInt32 x = 0, y = 0; ␊ |
366 | ␉UInt32 bp = 0;␊ |
367 | ␉␊ |
368 | ␉getResolution(&x, &y, &bp);␊ |
369 | ␉␊ |
370 | ␉␊ |
371 | ␉if (x!=0 && y!=0) {␊ |
372 | ␉␉vbios_map * map;␊ |
373 | ␊ |
374 | ␉␉map = open_vbios(CT_UNKWN);␊ |
375 | ␊ |
376 | ␉␉unlock_vbios(map);␊ |
377 | ␉␉␉␊ |
378 | ␉␉set_mode(map, x, y, bp, 0, 0);␊ |
379 | ␉␉␉␊ |
380 | ␉␉relock_vbios(map);␊ |
381 | ␉␉␉␊ |
382 | ␉␉close_vbios(map);␊ |
383 | ␊ |
384 | ␉␉verbose("Patched first resolution mode to %dx%d.\n", x, y);␊ |
385 | ␊ |
386 | ␉␉␉␊ |
387 | ␉}␊ |
388 | ␉␉␊ |
389 | ␉␊ |
390 | ␉//printf("Press any key to continue...");␊ |
391 | ␉//getc();␊ |
392 | ␊ |
393 | ␉␊ |
394 | ␉␊ |
395 | // Try initialising the GUI unless disabled␊ |
396 | if( useGUI )␊ |
397 | initGUI();␊ |
398 | ␊ |
399 | // Load boot logo image␊ |
400 | loadBootGraphics();␊ |
401 | ␊ |
402 | setBootGlobals(bvChain);␊ |
403 | ␊ |
404 | // Parse args, load and start kernel.␊ |
405 | while (1)␊ |
406 | {␊ |
407 | const char *val;␊ |
408 | int len;␊ |
409 | int trycache;␊ |
410 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
411 | int ret = -1;␊ |
412 | void *binary = (void *)kLoadAddr;␊ |
413 | BOOL tryresume;␊ |
414 | BOOL tryresumedefault;␊ |
415 | BOOL forceresume;␊ |
416 | ␊ |
417 | config_file_t systemVersion;␉␉// system.plist of booting partition␊ |
418 | ␊ |
419 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
420 | char bootFileSpec[512];␊ |
421 | ␉␉␊ |
422 | // Initialize globals.␊ |
423 | ␊ |
424 | sysConfigValid = 0;␊ |
425 | gErrors = 0;␊ |
426 | ␊ |
427 | status = getBootOptions(firstRun);␊ |
428 | firstRun = NO;␊ |
429 | if (status == -1) continue;␊ |
430 | ␉␉ ␊ |
431 | status = processBootOptions();␊ |
432 | // Status==1 means to chainboot␊ |
433 | if ( status == 1 ) break;␊ |
434 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
435 | if ( status == -1 )␊ |
436 | {␊ |
437 | // gBootVolume == NULL usually means the user hit escape.␊ |
438 | if(gBootVolume == NULL)␊ |
439 | {␊ |
440 | freeFilteredBVChain(bvChain);␊ |
441 | ␊ |
442 | if (gEnableCDROMRescan)␊ |
443 | rescanBIOSDevice(gBIOSDev);␊ |
444 | ␊ |
445 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
446 | setBootGlobals(bvChain);␊ |
447 | }␊ |
448 | continue;␊ |
449 | }␊ |
450 | ␉␉␊ |
451 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
452 | ␉␉␊ |
453 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
454 | ␉␉␉drawBackground();␊ |
455 | ␉␉␉␊ |
456 | // Found and loaded a config file. Proceed with boot.␊ |
457 | ␊ |
458 | ␉␉// Turn off any GUI elements␊ |
459 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
460 | ␉␉{␊ |
461 | ␉␉␉gui.devicelist.draw = NO;␊ |
462 | ␉␉␉gui.bootprompt.draw = NO;␊ |
463 | ␉␉␉gui.menu.draw = NO;␊ |
464 | ␉␉␉gui.infobox.draw = NO;␊ |
465 | ␉␉␉drawBackground();␊ |
466 | ␉␉␉updateVRAM();␊ |
467 | ␉␉}␊ |
468 | ␉␉␊ |
469 | ␉␉// Find out which version mac os we're booting.␊ |
470 | ␉␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion) )␊ |
471 | ␉␉␉if (getValueForKey("ProductVersion", &val, &len, &systemVersion))␊ |
472 | ␉␉␉{␉␊ |
473 | ␉␉␉␉// getValueForKey uses const char for val␊ |
474 | ␉␉␉␉// so copy it and trim␊ |
475 | ␉␉␉␉strncpy(gMacOSVersion, val, MIN(len, 4));␊ |
476 | ␉␉␉␉gMacOSVersion[MIN(len, 4)] = '\0';␊ |
477 | ␉␉␉}␊ |
478 | ␉␉␊ |
479 | ␉␉archCpuType=detectCpuType ();␊ |
480 | ␉␉if (getValueForKey("arch", &val, &len, &bootInfo->bootConfig))␊ |
481 | ␉␉{␊ |
482 | ␉␉␉if(strncmp(val,"x86_64",6) == 0)␊ |
483 | ␉␉␉␉archCpuType=CPU_TYPE_X86_64;␊ |
484 | ␉␉␉else␊ |
485 | ␉␉␉␉archCpuType=CPU_TYPE_I386;␊ |
486 | ␉␉}␊ |
487 | ␉␉␊ |
488 | ␉␉if (!getBoolForKey ("Wake", &tryresume, &bootInfo->bootConfig))␊ |
489 | ␉␉{␊ |
490 | ␉␉␉tryresume = TRUE;␊ |
491 | ␉␉␉tryresumedefault = TRUE;␊ |
492 | ␉␉}␊ |
493 | ␉␉else␊ |
494 | ␉␉␉tryresumedefault = FALSE;␊ |
495 | ␊ |
496 | ␉␉if (!getBoolForKey ("ForceWake", &forceresume, &bootInfo->bootConfig))␊ |
497 | ␉␉␉forceresume = FALSE;␊ |
498 | ␉␉␊ |
499 | ␉␉if (forceresume)␊ |
500 | ␉␉{␊ |
501 | ␉␉␉tryresume = TRUE;␊ |
502 | ␉␉␉tryresumedefault = FALSE;␊ |
503 | ␉␉}␊ |
504 | ␉␉␊ |
505 | ␉␉while (tryresume) {␊ |
506 | ␉␉␉const char *tmp;␊ |
507 | ␉␉␉BVRef bvr;␊ |
508 | ␉␉␉if (!getValueForKey("WakeImage", &val, &len, &bootInfo->bootConfig))␊ |
509 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
510 | ␉␉␉␊ |
511 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
512 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
513 | ␊ |
514 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
515 | ␉␉␉␉break;␊ |
516 | ␉␉␉␊ |
517 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
518 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
519 | ␉␉␉␉break;␊ |
520 | ␉␉␉␊ |
521 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
522 | ␉␉␉␉break;␊ |
523 | ␉␉␉␊ |
524 | ␉␉␉if (!forceresume && sleeptime+3<bvr->modTime)␊ |
525 | ␉␉␉{␊ |
526 | ␉␉␉//␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
527 | ␉␉␉␉break;␊ |
528 | ␉␉␉}␊ |
529 | ␉␉␉␉␊ |
530 | ␉␉␉HibernateBoot((char *)val);␊ |
531 | ␉␉␉break;␊ |
532 | ␉␉}␊ |
533 | ␊ |
534 | // Reset cache name.␊ |
535 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
536 | ␊ |
537 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
538 | ␊ |
539 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
540 | ␊ |
541 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig) == YES) {␊ |
542 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
543 | } else {␊ |
544 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
545 | }␊ |
546 | ␊ |
547 | // Check for cache file.␊ |
548 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
549 | (gOverrideKernel == NO) &&␊ |
550 | (gBootFileType == kBlockDeviceType) &&␊ |
551 | (gMKextName[0] == '\0') &&␊ |
552 | (gBootKernelCacheFile[0] != '\0'));␊ |
553 | ␊ |
554 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
555 | ␉␉␊ |
556 | if (trycache) do {␊ |
557 | ␊ |
558 | // if we haven't found the kernel yet, don't use the cache␊ |
559 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
560 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
561 | trycache = 0;␊ |
562 | break;␊ |
563 | }␊ |
564 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
565 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
566 | || (cachetime < kerneltime)) {␊ |
567 | trycache = 0;␊ |
568 | break;␊ |
569 | }␊ |
570 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
571 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
572 | && (cachetime < exttime)) {␊ |
573 | trycache = 0;␊ |
574 | break;␊ |
575 | }␊ |
576 | if (kerneltime > exttime) {␊ |
577 | exttime = kerneltime;␊ |
578 | }␊ |
579 | if (cachetime != (exttime + 1)) {␊ |
580 | trycache = 0;␊ |
581 | break;␊ |
582 | }␊ |
583 | } while (0);␊ |
584 | ␊ |
585 | do {␊ |
586 | if (trycache) {␊ |
587 | bootFile = gBootKernelCacheFile;␊ |
588 | verbose("Loading kernel cache %s\n", bootFile);␊ |
589 | ret = LoadFile(bootFile);␊ |
590 | binary = (void *)kLoadAddr;␊ |
591 | if (ret >= 0) {␊ |
592 | break;␊ |
593 | }␊ |
594 | }␊ |
595 | bootFile = bootInfo->bootFile;␊ |
596 | ␊ |
597 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
598 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
599 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
600 | ␉ ␉ if (ret == -1)␊ |
601 | ␉ ␉ {␊ |
602 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
603 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
604 | if (ret == -1)␊ |
605 | {␊ |
606 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
607 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
608 | if (ret == -1)␊ |
609 | {␊ |
610 | // Not found any alternate locations, using the original kernel image path.␊ |
611 | strcpy(bootFileSpec, bootFile);␊ |
612 | }␊ |
613 | }␊ |
614 | }␊ |
615 | ␉␉␉␊ |
616 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
617 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
618 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
619 | {␊ |
620 | archCpuType = CPU_TYPE_I386;␊ |
621 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
622 | }␊ |
623 | ␉␉␉␊ |
624 | } while (0);␊ |
625 | ␊ |
626 | clearActivityIndicator();␊ |
627 | #if DEBUG␊ |
628 | printf("Pausing...");␊ |
629 | sleep(8);␊ |
630 | #endif␊ |
631 | ␊ |
632 | if (ret <= 0)␊ |
633 | ␉␉{␊ |
634 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
635 | ␊ |
636 | ␉␉␉if(gui.initialised == YES)␊ |
637 | ␉␉␉{␊ |
638 | ␉␉␉␉sleep(1);␊ |
639 | ␉␉␉␉drawBackground();␊ |
640 | ␉␉␉␉gui.devicelist.draw = YES;␊ |
641 | ␉␉␉␉gui.redraw = YES;␊ |
642 | ␉␉␉}␊ |
643 | ␉␉␉␉␊ |
644 | if ( gBootFileType == kNetworkDeviceType )␊ |
645 | {␊ |
646 | // Return control back to PXE. Don't unload PXE base code.␊ |
647 | gUnloadPXEOnExit = 0;␊ |
648 | break;␊ |
649 | }␊ |
650 | ␉␉␉␊ |
651 | } else {␊ |
652 | /* Won't return if successful. */␊ |
653 | ret = ExecKernel(binary);␊ |
654 | }␊ |
655 | ␊ |
656 | } /* while(1) */␊ |
657 | ␊ |
658 | // chainboot␊ |
659 | if(status==1)␊ |
660 | ␉if(getVideoMode() == GRAPHICS_MODE) // if we are already in graphics-mode,␊ |
661 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
662 | ␉␊ |
663 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
664 | ␉nbpUnloadBaseCode();␊ |
665 | }␊ |
666 | }␊ |
667 | ␊ |
668 | /*!␊ |
669 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
670 | */␊ |
671 | /*␊ |
672 | static void selectBiosDevice(void)␊ |
673 | {␊ |
674 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
675 | CacheReset();␊ |
676 | diskFreeMap(oldMap);␊ |
677 | oldMap = NULL;␊ |
678 | ␊ |
679 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
680 | ␊ |
681 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
682 | BVRef bootVol = selectBootVolume(bvchain);␊ |
683 | gBootVolume = bootVol;␊ |
684 | setRootVolume(bootVol);␊ |
685 | gBIOSDev = dev;␊ |
686 | }␊ |
687 | */␊ |
688 | ␊ |
689 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
690 | #define NMAX 5000␊ |
691 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
692 | ␊ |
693 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
694 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
695 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
696 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
697 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
698 | ␊ |
699 | unsigned long Adler32(unsigned char *buf, long len)␊ |
700 | {␊ |
701 | unsigned long s1 = 1; // adler & 0xffff;␊ |
702 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
703 | unsigned long result;␊ |
704 | int k;␊ |
705 | ␊ |
706 | while (len > 0) {␊ |
707 | k = len < NMAX ? len : NMAX;␊ |
708 | len -= k;␊ |
709 | while (k >= 16) {␊ |
710 | DO16(buf);␊ |
711 | buf += 16;␊ |
712 | k -= 16;␊ |
713 | }␊ |
714 | if (k != 0) do {␊ |
715 | s1 += *buf++;␊ |
716 | s2 += s1;␊ |
717 | } while (--k);␊ |
718 | s1 %= BASE;␊ |
719 | s2 %= BASE;␊ |
720 | }␊ |
721 | result = (s2 << 16) | s1;␊ |
722 | return OSSwapHostToBigInt32(result);␊ |
723 | }␊ |
724 | |