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 = false;␊ |
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 | static void malloc_error(char *addr, size_t size)␊ |
119 | {␊ |
120 | printf("\nMemory allocation error (0x%x, 0x%x)\n",␊ |
121 | (unsigned)addr, (unsigned)size);␊ |
122 | asm volatile ("hlt");␊ |
123 | }␊ |
124 | ␊ |
125 | /*!␊ |
126 | Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
127 | */␊ |
128 | void initialize_runtime()␊ |
129 | {␊ |
130 | zeroBSS();␊ |
131 | ␊ |
132 | // Initialize malloc␊ |
133 | malloc_init(0, 0, 0, malloc_error);␊ |
134 | }␊ |
135 | ␊ |
136 | //==========================================================================␊ |
137 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
138 | ␊ |
139 | static int ExecKernel(void *binary)␊ |
140 | {␊ |
141 | entry_t kernelEntry;␊ |
142 | int ret;␊ |
143 | bool waitBeforeBoot = FALSE;␊ |
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 | getBoolForKey(kWaitForKeypressKey, &waitBeforeBoot, &bootInfo->bootConfig);␊ |
156 | ␊ |
157 | // Reserve space for boot args␊ |
158 | reserveKernBootStruct();␊ |
159 | ␊ |
160 | // Load boot drivers from the specifed root path.␊ |
161 | ␊ |
162 | if (!gHaveKernelCache) {␊ |
163 | LoadDrivers("/");␊ |
164 | }␊ |
165 | ␊ |
166 | clearActivityIndicator();␊ |
167 | ␊ |
168 | setupFakeEfi();␊ |
169 | ␊ |
170 | if (gErrors) {␊ |
171 | warning("Errors encountered while starting up the computer.\n");␊ |
172 | if (!waitBeforeBoot) {␊ |
173 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
174 | sleep(kBootErrorTimeout);␊ |
175 | }␊ |
176 | }␊ |
177 | ␊ |
178 | verbose("Starting Darwin %s arch:%s\n", gMacOSVersion, ( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
179 | ␊ |
180 | // Cleanup the PXE base code.␊ |
181 | ␊ |
182 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
183 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
184 | {␊ |
185 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
186 | sleep(2);␊ |
187 | }␊ |
188 | }␊ |
189 | ␊ |
190 | if (waitBeforeBoot)␊ |
191 | {␊ |
192 | printf("Press any key to continue...");␊ |
193 | getc();␊ |
194 | }␊ |
195 | ␊ |
196 | // If we were in text mode, switch to graphics mode.␊ |
197 | // This will draw the boot graphics unless we are in␊ |
198 | // verbose mode.␊ |
199 | ␊ |
200 | if(gVerboseMode)␊ |
201 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
202 | else␊ |
203 | drawBootGraphics();␊ |
204 | ␉␊ |
205 | finalizeBootStruct();␊ |
206 | ␊ |
207 | // Jump to kernel's entry point. There's no going back now.␊ |
208 | ␊ |
209 | startprog( kernelEntry, bootArgs );␊ |
210 | ␊ |
211 | // Not reached␊ |
212 | ␊ |
213 | return 0;␊ |
214 | }␊ |
215 | ␊ |
216 | //==========================================================================␊ |
217 | // Scan and record the system's hardware information.␊ |
218 | ␊ |
219 | static void scanHardware()␊ |
220 | {␊ |
221 | ␉extern void scan_platform();␊ |
222 | ␊ |
223 | ␉scan_platform();␊ |
224 | }␊ |
225 | ␊ |
226 | /*!␊ |
227 | This is the entrypoint from real-mode which functions exactly as it did before.␊ |
228 | Multiboot does its own runtime initialization, does some of its own things, and then␊ |
229 | calls common_boot.␊ |
230 | */␊ |
231 | void boot(int biosdev)␊ |
232 | {␊ |
233 | initialize_runtime();␊ |
234 | ␊ |
235 | // Enable A20 gate before accessing memory above 1Mb.␊ |
236 | enableA20();␊ |
237 | ␊ |
238 | return common_boot(biosdev);␊ |
239 | }␊ |
240 | ␊ |
241 | //==========================================================================␊ |
242 | // The 'main' function for the booter. Called by boot0 when booting␊ |
243 | // from a block device, or by the network booter.␊ |
244 | //␊ |
245 | // arguments:␊ |
246 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
247 | // that the booter was loaded from.␊ |
248 | //␊ |
249 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
250 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
251 | // next boot device on its list.␊ |
252 | ␊ |
253 | #define DLOG(x) outb(0x80, (x))␊ |
254 | ␊ |
255 | void common_boot(int biosdev)␊ |
256 | {␊ |
257 | int status;␊ |
258 | char *bootFile;␊ |
259 | unsigned long adler32;␊ |
260 | bool quiet;␊ |
261 | bool firstRun = YES;␊ |
262 | bool instantMenu;␊ |
263 | bool rescanPrompt;␊ |
264 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
265 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
266 | ␊ |
267 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
268 | // the base code will result in a hang or kernel panic.␊ |
269 | ␊ |
270 | gUnloadPXEOnExit = 1;␊ |
271 | ␊ |
272 | // Record the device that the booter was loaded from.␊ |
273 | ␊ |
274 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
275 | ␊ |
276 | // Initialize boot info structure.␊ |
277 | ␊ |
278 | initKernBootStruct();␊ |
279 | ␊ |
280 | // Setup VGA text mode.␊ |
281 | // Not sure if it is safe to call setVideoMode() before the␊ |
282 | // config table has been loaded. Call video_mode() instead.␊ |
283 | ␊ |
284 | #if DEBUG␊ |
285 | printf("before video_mode\n");␊ |
286 | #endif␊ |
287 | video_mode( 2 ); // 80x25 mono text mode.␊ |
288 | #if DEBUG␊ |
289 | printf("after video_mode\n");␊ |
290 | #endif␊ |
291 | ␊ |
292 | // Check to see that this hardware is supported.␊ |
293 | status = checkForSupportedHardware();␊ |
294 | if (status != 0) {␊ |
295 | printf("This hardware configuration is not supported by Darwin/x86. (%d)", status);␊ |
296 | }␊ |
297 | ␊ |
298 | // First get info for boot volume.␊ |
299 | scanBootVolumes(gBIOSDev, 0);␊ |
300 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
301 | setBootGlobals(bvChain);␊ |
302 | ␊ |
303 | // Load boot.plist config file␊ |
304 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
305 | ␊ |
306 | if ( getBoolForKey( kQuietBootKey, &quiet, &bootInfo->bootConfig ) && quiet ) {␊ |
307 | gBootMode |= kBootModeQuiet;␊ |
308 | }␊ |
309 | ␊ |
310 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
311 | if ( getBoolForKey( kInsantMenuKey, &instantMenu, &bootInfo->bootConfig ) && instantMenu ) {␊ |
312 | firstRun = FALSE;␊ |
313 | }␊ |
314 | ␊ |
315 | // Loading preboot ramdisk if exists.␊ |
316 | loadPrebootRAMDisk();␊ |
317 | ␊ |
318 | // Disable rescan option by default␊ |
319 | gEnableCDROMRescan = FALSE;␊ |
320 | ␊ |
321 | // Enable it with Rescan=y in system config␊ |
322 | if ( getBoolForKey( kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig ) && gEnableCDROMRescan ) {␊ |
323 | gEnableCDROMRescan = TRUE;␊ |
324 | }␊ |
325 | ␊ |
326 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
327 | rescanPrompt = FALSE;␊ |
328 | if ( getBoolForKey( kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig ) && rescanPrompt␊ |
329 | && biosDevIsCDROM(gBIOSDev) ) {␊ |
330 | gEnableCDROMRescan = promptForRescanOption();␊ |
331 | }␊ |
332 | ␊ |
333 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
334 | if ( getBoolForKey( kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig ) && gScanSingleDrive ) {␊ |
335 | gScanSingleDrive = TRUE;␊ |
336 | }␊ |
337 | ␊ |
338 | // Create a list of partitions on device(s).␊ |
339 | if (gScanSingleDrive)␊ |
340 | scanBootVolumes( gBIOSDev, &bvCount );␊ |
341 | else␊ |
342 | scanDisks( gBIOSDev, &bvCount );␊ |
343 | ␊ |
344 | // Create a separated bvr chain using the specified filters.␊ |
345 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
346 | ␊ |
347 | gBootVolume = selectBootVolume(bvChain);␊ |
348 | ␊ |
349 | #if DEBUG␊ |
350 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
351 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
352 | getc();␊ |
353 | #endif␊ |
354 | ␊ |
355 | ␉// Scan hardware configuration.␊ |
356 | scanHardware();␊ |
357 | ␉␊ |
358 | ␉// Check if GUI=n switch is present in config file␊ |
359 | if ( getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig) && !useGUI )␊ |
360 | useGUI = FALSE;␊ |
361 | ␉␉␊ |
362 | // Try initialising the GUI unless disabled␊ |
363 | if( useGUI )␊ |
364 | initGUI();␊ |
365 | ␊ |
366 | // Load boot logo image␊ |
367 | loadBootGraphics();␊ |
368 | ␊ |
369 | setBootGlobals(bvChain);␊ |
370 | ␊ |
371 | // Parse args, load and start kernel.␊ |
372 | while (1)␊ |
373 | {␊ |
374 | const char *val;␊ |
375 | int len;␊ |
376 | int trycache;␊ |
377 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
378 | int ret = -1;␊ |
379 | void *binary = (void *)kLoadAddr;␊ |
380 | bool tryresume;␊ |
381 | bool tryresumedefault;␊ |
382 | bool forceresume;␊ |
383 | ␊ |
384 | config_file_t systemVersion;␉␉// system.plist of booting partition␊ |
385 | ␊ |
386 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
387 | char bootFileSpec[512];␊ |
388 | ␉␉␊ |
389 | // Initialize globals.␊ |
390 | ␊ |
391 | sysConfigValid = 0;␊ |
392 | gErrors = 0;␊ |
393 | ␊ |
394 | status = getBootOptions(firstRun);␊ |
395 | firstRun = NO;␊ |
396 | if (status == -1) continue;␊ |
397 | ␉␉ ␊ |
398 | status = processBootOptions();␊ |
399 | // Status==1 means to chainboot␊ |
400 | if ( status == 1 ) break;␊ |
401 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
402 | if ( status == -1 )␊ |
403 | {␊ |
404 | // gBootVolume == NULL usually means the user hit escape.␊ |
405 | if(gBootVolume == NULL)␊ |
406 | {␊ |
407 | freeFilteredBVChain(bvChain);␊ |
408 | ␊ |
409 | if (gEnableCDROMRescan)␊ |
410 | rescanBIOSDevice(gBIOSDev);␊ |
411 | ␊ |
412 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
413 | setBootGlobals(bvChain);␊ |
414 | }␊ |
415 | continue;␊ |
416 | }␊ |
417 | ␉␉␊ |
418 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
419 | ␉␉␊ |
420 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
421 | ␉␉␉drawBackground();␊ |
422 | ␉␉␉␊ |
423 | // Found and loaded a config file. Proceed with boot.␊ |
424 | ␊ |
425 | ␉␉// Turn off any GUI elements␊ |
426 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
427 | ␉␉{␊ |
428 | ␉␉␉gui.devicelist.draw = NO;␊ |
429 | ␉␉␉gui.bootprompt.draw = NO;␊ |
430 | ␉␉␉gui.menu.draw = NO;␊ |
431 | ␉␉␉gui.infobox.draw = NO;␊ |
432 | ␉␉␉drawBackground();␊ |
433 | ␉␉␉updateVRAM();␊ |
434 | ␉␉}␊ |
435 | ␉␉␊ |
436 | ␉␉// Find out which version mac os we're booting.␊ |
437 | ␉␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion) )␊ |
438 | ␉␉␉if (getValueForKey("ProductVersion", &val, &len, &systemVersion))␊ |
439 | ␉␉␉{␉␊ |
440 | ␉␉␉␉// getValueForKey uses const char for val␊ |
441 | ␉␉␉␉// so copy it and trim␊ |
442 | ␉␉␉␉strncpy(gMacOSVersion, val, MIN(len, 4));␊ |
443 | ␉␉␉␉gMacOSVersion[MIN(len, 4)] = '\0';␊ |
444 | ␉␉␉}␊ |
445 | ␉␉␊ |
446 | ␉␉archCpuType=detectCpuType ();␊ |
447 | ␉␉if (getValueForKey("arch", &val, &len, &bootInfo->bootConfig))␊ |
448 | ␉␉{␊ |
449 | ␉␉␉if(strncmp(val,"x86_64",6) == 0)␊ |
450 | ␉␉␉␉archCpuType=CPU_TYPE_X86_64;␊ |
451 | ␉␉␉else␊ |
452 | ␉␉␉␉archCpuType=CPU_TYPE_I386;␊ |
453 | ␉␉}␊ |
454 | ␉␉␊ |
455 | ␉␉if (!getBoolForKey ("Wake", &tryresume, &bootInfo->bootConfig))␊ |
456 | ␉␉{␊ |
457 | ␉␉␉tryresume = TRUE;␊ |
458 | ␉␉␉tryresumedefault = TRUE;␊ |
459 | ␉␉}␊ |
460 | ␉␉else␊ |
461 | ␉␉␉tryresumedefault = FALSE;␊ |
462 | ␊ |
463 | ␉␉if (!getBoolForKey ("ForceWake", &forceresume, &bootInfo->bootConfig))␊ |
464 | ␉␉␉forceresume = FALSE;␊ |
465 | ␉␉␊ |
466 | ␉␉if (forceresume)␊ |
467 | ␉␉{␊ |
468 | ␉␉␉tryresume = TRUE;␊ |
469 | ␉␉␉tryresumedefault = FALSE;␊ |
470 | ␉␉}␊ |
471 | ␉␉␊ |
472 | ␉␉while (tryresume) {␊ |
473 | ␉␉␉const char *tmp;␊ |
474 | ␉␉␉BVRef bvr;␊ |
475 | ␉␉␉if (!getValueForKey("WakeImage", &val, &len, &bootInfo->bootConfig))␊ |
476 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
477 | ␉␉␉␊ |
478 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
479 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
480 | ␊ |
481 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
482 | ␉␉␉␉break;␊ |
483 | ␉␉␉␊ |
484 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
485 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
486 | ␉␉␉␉break;␊ |
487 | ␉␉␉␊ |
488 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
489 | ␉␉␉␉break;␊ |
490 | ␉␉␉␊ |
491 | ␉␉␉if (!forceresume && sleeptime+3<bvr->modTime)␊ |
492 | ␉␉␉{␊ |
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) == YES) {␊ |
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 == NO) &&␊ |
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 | ␉␉{␊ |
601 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
602 | ␊ |
603 | ␉␉␉if(gui.initialised == YES)␊ |
604 | ␉␉␉{␊ |
605 | ␉␉␉␉sleep(1);␊ |
606 | ␉␉␉␉drawBackground();␊ |
607 | ␉␉␉␉gui.devicelist.draw = YES;␊ |
608 | ␉␉␉␉gui.redraw = YES;␊ |
609 | ␉␉␉}␊ |
610 | ␉␉␉␉␊ |
611 | if ( gBootFileType == kNetworkDeviceType )␊ |
612 | {␊ |
613 | // Return control back to PXE. Don't unload PXE base code.␊ |
614 | gUnloadPXEOnExit = 0;␊ |
615 | break;␊ |
616 | }␊ |
617 | ␉␉␉␊ |
618 | } else {␊ |
619 | /* Won't return if successful. */␊ |
620 | ret = ExecKernel(binary);␊ |
621 | }␊ |
622 | ␊ |
623 | } /* while(1) */␊ |
624 | ␊ |
625 | // chainboot␊ |
626 | if(status==1)␊ |
627 | ␉if(getVideoMode() == GRAPHICS_MODE) // if we are already in graphics-mode,␊ |
628 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
629 | ␉␊ |
630 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
631 | ␉nbpUnloadBaseCode();␊ |
632 | }␊ |
633 | }␊ |
634 | ␊ |
635 | /*!␊ |
636 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
637 | */␊ |
638 | /*␊ |
639 | static void selectBiosDevice(void)␊ |
640 | {␊ |
641 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
642 | CacheReset();␊ |
643 | diskFreeMap(oldMap);␊ |
644 | oldMap = NULL;␊ |
645 | ␊ |
646 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
647 | ␊ |
648 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
649 | BVRef bootVol = selectBootVolume(bvchain);␊ |
650 | gBootVolume = bootVol;␊ |
651 | setRootVolume(bootVol);␊ |
652 | gBIOSDev = dev;␊ |
653 | }␊ |
654 | */␊ |
655 | ␊ |
656 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
657 | #define NMAX 5000␊ |
658 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
659 | ␊ |
660 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
661 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
662 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
663 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
664 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
665 | ␊ |
666 | unsigned long Adler32(unsigned char *buf, long len)␊ |
667 | {␊ |
668 | unsigned long s1 = 1; // adler & 0xffff;␊ |
669 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
670 | unsigned long result;␊ |
671 | int k;␊ |
672 | ␊ |
673 | while (len > 0) {␊ |
674 | k = len < NMAX ? len : NMAX;␊ |
675 | len -= k;␊ |
676 | while (k >= 16) {␊ |
677 | DO16(buf);␊ |
678 | buf += 16;␊ |
679 | k -= 16;␊ |
680 | }␊ |
681 | if (k != 0) do {␊ |
682 | s1 += *buf++;␊ |
683 | s2 += s1;␊ |
684 | } while (--k);␊ |
685 | s1 %= BASE;␊ |
686 | s2 %= BASE;␊ |
687 | }␊ |
688 | result = (s2 << 16) | s1;␊ |
689 | return OSSwapHostToBigInt32(result);␊ |
690 | }␊ |
691 | |