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