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Source at commit 418 created 13 years 10 months ago. By azimutz, Trunk it, revs 413 --> 416. | |
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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 "platform.h"␊ |
61 | #include "resolution.h"␊ |
62 | #include "modules.h"␊ |
63 | ␊ |
64 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
65 | bool gOverrideKernel;␊ |
66 | static char gBootKernelCacheFile[512];␊ |
67 | static char gCacheNameAdler[64 + 256];␊ |
68 | char *gPlatformName = gCacheNameAdler;␊ |
69 | char gRootDevice[512];␊ |
70 | char gMKextName[512];␊ |
71 | char gMacOSVersion[8];␊ |
72 | bool gEnableCDROMRescan;␊ |
73 | bool gScanSingleDrive;␊ |
74 | ␊ |
75 | int bvCount = 0;␊ |
76 | //int␉menucount = 0;␊ |
77 | int gDeviceCount = 0; ␊ |
78 | ␊ |
79 | bool␉recoveryMode = false;␊ |
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 | ␉md0Ramdisk();␊ |
168 | ␉␊ |
169 | setupFakeEfi();␊ |
170 | ␊ |
171 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
172 | ␊ |
173 | // Cleanup the PXE base code.␊ |
174 | ␊ |
175 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
176 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
177 | {␊ |
178 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
179 | sleep(2);␊ |
180 | }␊ |
181 | }␊ |
182 | ␊ |
183 | bool dummyVal;␊ |
184 | if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal) {␊ |
185 | ␉printf("Press any key to continue...");␊ |
186 | ␉getc();␊ |
187 | }␊ |
188 | ␊ |
189 | // If we were in text mode, switch to graphics mode.␊ |
190 | // This will draw the boot graphics unless we are in␊ |
191 | // verbose mode.␊ |
192 | ␊ |
193 | if(gVerboseMode)␊ |
194 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
195 | else␊ |
196 | drawBootGraphics();␊ |
197 | ␉␊ |
198 | finalizeBootStruct();␊ |
199 | ␊ |
200 | ␉usb_loop();␊ |
201 | // Jump to kernel's entry point. There's no going back now.␊ |
202 | startprog( kernelEntry, bootArgs );␊ |
203 | ␊ |
204 | // Not reached␊ |
205 | ␊ |
206 | return 0;␊ |
207 | }␊ |
208 | ␊ |
209 | //==========================================================================␊ |
210 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
211 | // before. Multiboot does its own runtime initialization, does some of its␊ |
212 | // own things, and then calls common_boot.␊ |
213 | void boot(int biosdev)␊ |
214 | {␊ |
215 | ␉initialize_runtime();␊ |
216 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
217 | ␉enableA20();␊ |
218 | ␉common_boot(biosdev);␊ |
219 | }␊ |
220 | ␊ |
221 | //==========================================================================␊ |
222 | // The 'main' function for the booter. Called by boot0 when booting␊ |
223 | // from a block device, or by the network booter.␊ |
224 | //␊ |
225 | // arguments:␊ |
226 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
227 | // that the booter was loaded from.␊ |
228 | //␊ |
229 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
230 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
231 | // next boot device on its list.␊ |
232 | void common_boot(int biosdev)␊ |
233 | {␊ |
234 | int status;␊ |
235 | char *bootFile;␊ |
236 | unsigned long adler32;␊ |
237 | bool quiet;␊ |
238 | bool firstRun = true;␊ |
239 | bool instantMenu;␊ |
240 | bool rescanPrompt;␊ |
241 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
242 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
243 | ␊ |
244 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
245 | // the base code will result in a hang or kernel panic.␊ |
246 | gUnloadPXEOnExit = true;␊ |
247 | ␊ |
248 | // Record the device that the booter was loaded from.␊ |
249 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
250 | ␊ |
251 | // Initialize boot info structure.␊ |
252 | initKernBootStruct();␊ |
253 | ␊ |
254 | // Setup VGA text mode.␊ |
255 | // Not sure if it is safe to call setVideoMode() before the␊ |
256 | // config table has been loaded. Call video_mode() instead.␊ |
257 | #if DEBUG␊ |
258 | printf("before video_mode\n");␊ |
259 | #endif␊ |
260 | video_mode( 2 ); // 80x25 mono text mode.␊ |
261 | #if DEBUG␊ |
262 | printf("after video_mode\n");␊ |
263 | #endif␊ |
264 | ␊ |
265 | // Scan and record the system's hardware information.␊ |
266 | scan_platform();␊ |
267 | ␊ |
268 | // First get info for boot volume.␊ |
269 | scanBootVolumes(gBIOSDev, 0);␊ |
270 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
271 | setBootGlobals(bvChain);␊ |
272 | ␊ |
273 | // Load boot.plist config file␊ |
274 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
275 | ␊ |
276 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
277 | gBootMode |= kBootModeQuiet;␊ |
278 | }␊ |
279 | ␊ |
280 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
281 | if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
282 | firstRun = false;␊ |
283 | }␊ |
284 | ␊ |
285 | // Loading preboot ramdisk if exists.␊ |
286 | loadPrebootRAMDisk();␊ |
287 | ␊ |
288 | ␉// Intialize module system␊ |
289 | ␉if(init_module_system())␊ |
290 | ␉{␊ |
291 | ␉␉load_all_modules();␊ |
292 | ␉}␊ |
293 | ␉␉␊ |
294 | // Disable rescan option by default␊ |
295 | gEnableCDROMRescan = false;␊ |
296 | ␊ |
297 | // Enable it with Rescan=y in system config␊ |
298 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
299 | gEnableCDROMRescan = true;␊ |
300 | }␊ |
301 | ␊ |
302 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
303 | rescanPrompt = false;␊ |
304 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
305 | gEnableCDROMRescan = promptForRescanOption();␊ |
306 | }␊ |
307 | ␊ |
308 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
309 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
310 | gScanSingleDrive = true;␊ |
311 | }␊ |
312 | ␊ |
313 | // Create a list of partitions on device(s).␊ |
314 | if (gScanSingleDrive) {␊ |
315 | scanBootVolumes(gBIOSDev, &bvCount);␊ |
316 | } else {␊ |
317 | scanDisks(gBIOSDev, &bvCount);␊ |
318 | }␊ |
319 | ␊ |
320 | // Create a separated bvr chain using the specified filters.␊ |
321 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
322 | ␊ |
323 | gBootVolume = selectBootVolume(bvChain);␊ |
324 | ␊ |
325 | #if DEBUG␊ |
326 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
327 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
328 | getc();␊ |
329 | #endif␊ |
330 | ␊ |
331 | useGUI = true;␊ |
332 | // Override useGUI default␊ |
333 | getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);␊ |
334 | if (useGUI) {␊ |
335 | ␉␉patchVideoBios();␊ |
336 | /* XXX AsereBLN handle error */␊ |
337 | ␉␉initGUI();␊ |
338 | }␊ |
339 | ␊ |
340 | setBootGlobals(bvChain);␊ |
341 | ␊ |
342 | // Parse args, load and start kernel.␊ |
343 | while (1) {␊ |
344 | const char *val;␊ |
345 | int len;␊ |
346 | int trycache;␊ |
347 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
348 | int ret = -1;␊ |
349 | void *binary = (void *)kLoadAddr;␊ |
350 | bool tryresume;␊ |
351 | bool tryresumedefault;␊ |
352 | bool forceresume;␊ |
353 | ␊ |
354 | config_file_t systemVersion;␉␉// system.plist of booting partition␊ |
355 | ␊ |
356 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
357 | char bootFileSpec[512];␊ |
358 | ␉␉␊ |
359 | // Initialize globals.␊ |
360 | ␊ |
361 | sysConfigValid = false;␊ |
362 | gErrors = false;␊ |
363 | ␊ |
364 | status = getBootOptions(firstRun);␊ |
365 | firstRun = false;␊ |
366 | if (status == -1) continue;␊ |
367 | ␉␉ ␊ |
368 | status = processBootOptions();␊ |
369 | // Status==1 means to chainboot␊ |
370 | if ( status == 1 ) break;␊ |
371 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
372 | if ( status == -1 )␊ |
373 | {␊ |
374 | // gBootVolume == NULL usually means the user hit escape.␊ |
375 | if(gBootVolume == NULL)␊ |
376 | {␊ |
377 | freeFilteredBVChain(bvChain);␊ |
378 | ␊ |
379 | if (gEnableCDROMRescan)␊ |
380 | rescanBIOSDevice(gBIOSDev);␊ |
381 | ␊ |
382 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
383 | setBootGlobals(bvChain);␊ |
384 | }␊ |
385 | continue;␊ |
386 | }␊ |
387 | ␉␉␊ |
388 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
389 | ␉␉␊ |
390 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
391 | ␉␉␉drawBackground();␊ |
392 | ␉␉␉␊ |
393 | // Found and loaded a config file. Proceed with boot.␊ |
394 | ␊ |
395 | ␉␉// Turn off any GUI elements␊ |
396 | ␉␉if( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
397 | ␉␉{␊ |
398 | ␉␉␉gui.devicelist.draw = false;␊ |
399 | ␉␉␉gui.bootprompt.draw = false;␊ |
400 | ␉␉␉gui.menu.draw = false;␊ |
401 | ␉␉␉gui.infobox.draw = false;␊ |
402 | ␉␉␉drawBackground();␊ |
403 | ␉␉␉updateVRAM();␊ |
404 | ␉␉}␊ |
405 | ␉␉␊ |
406 | ␉␉// Find out which version mac os we're booting.␊ |
407 | ␉␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion)) {␊ |
408 | ␉␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion)) {␉␊ |
409 | ␉␉␉␉// getValueForKey uses const char for val␊ |
410 | ␉␉␉␉// so copy it and trim␊ |
411 | ␉␉␉␉strncpy(gMacOSVersion, val, MIN(len, 4));␊ |
412 | ␉␉␉␉gMacOSVersion[MIN(len, 4)] = '\0';␊ |
413 | ␉␉␉}␊ |
414 | ␉␉}␊ |
415 | ␊ |
416 | ␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊ |
417 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
418 | ␉␉} else {␊ |
419 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
420 | ␉␉}␊ |
421 | ␉␉if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {␊ |
422 | ␉␉␉if (strncmp(val, "i386", 4) == 0) {␊ |
423 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
424 | ␉␉␉}␊ |
425 | ␉␉}␊ |
426 | ␉␉if (getValueForKey(k32BitModeFlag, &val, &len, &bootInfo->bootConfig)) {␊ |
427 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
428 | ␉␉}␊ |
429 | ␉␉␊ |
430 | ␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊ |
431 | ␉␉␉tryresume = true;␊ |
432 | ␉␉␉tryresumedefault = true;␊ |
433 | ␉␉} else {␊ |
434 | ␉␉␉tryresumedefault = false;␊ |
435 | ␉␉}␊ |
436 | ␊ |
437 | ␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {␊ |
438 | ␉␉␉forceresume = false;␊ |
439 | ␉␉}␊ |
440 | ␉␉␊ |
441 | ␉␉if (forceresume) {␊ |
442 | ␉␉␉tryresume = true;␊ |
443 | ␉␉␉tryresumedefault = false;␊ |
444 | ␉␉}␊ |
445 | ␉␉␊ |
446 | ␉␉while (tryresume) {␊ |
447 | ␉␉␉const char *tmp;␊ |
448 | ␉␉␉BVRef bvr;␊ |
449 | ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))␊ |
450 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
451 | ␉␉␉␊ |
452 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
453 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
454 | ␊ |
455 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
456 | ␉␉␉␉break;␊ |
457 | ␉␉␉␊ |
458 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
459 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
460 | ␉␉␉␉break;␊ |
461 | ␉␉␉␊ |
462 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
463 | ␉␉␉␉break;␊ |
464 | ␉␉␉␊ |
465 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
466 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
467 | ␉␉␉␉break;␊ |
468 | ␉␉␉}␊ |
469 | ␉␉␉␉␊ |
470 | ␉␉␉HibernateBoot((char *)val);␊ |
471 | ␉␉␉break;␊ |
472 | ␉␉}␊ |
473 | ␊ |
474 | // Reset cache name.␊ |
475 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
476 | ␊ |
477 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
478 | ␊ |
479 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
480 | ␊ |
481 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
482 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
483 | } else {␊ |
484 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
485 | }␊ |
486 | ␊ |
487 | // Check for cache file.␊ |
488 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
489 | !gOverrideKernel &&␊ |
490 | (gBootFileType == kBlockDeviceType) &&␊ |
491 | (gMKextName[0] == '\0') &&␊ |
492 | (gBootKernelCacheFile[0] != '\0'));␊ |
493 | ␊ |
494 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
495 | ␉␉␊ |
496 | if (trycache) do {␊ |
497 | ␊ |
498 | // if we haven't found the kernel yet, don't use the cache␊ |
499 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
500 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
501 | trycache = 0;␊ |
502 | break;␊ |
503 | }␊ |
504 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
505 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
506 | || (cachetime < kerneltime)) {␊ |
507 | trycache = 0;␊ |
508 | break;␊ |
509 | }␊ |
510 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
511 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
512 | && (cachetime < exttime)) {␊ |
513 | trycache = 0;␊ |
514 | break;␊ |
515 | }␊ |
516 | if (kerneltime > exttime) {␊ |
517 | exttime = kerneltime;␊ |
518 | }␊ |
519 | if (cachetime != (exttime + 1)) {␊ |
520 | trycache = 0;␊ |
521 | break;␊ |
522 | }␊ |
523 | } while (0);␊ |
524 | ␊ |
525 | do {␊ |
526 | if (trycache) {␊ |
527 | bootFile = gBootKernelCacheFile;␊ |
528 | verbose("Loading kernel cache %s\n", bootFile);␊ |
529 | ret = LoadFile(bootFile);␊ |
530 | binary = (void *)kLoadAddr;␊ |
531 | if (ret >= 0) {␊ |
532 | break;␊ |
533 | }␊ |
534 | }␊ |
535 | bootFile = bootInfo->bootFile;␊ |
536 | ␊ |
537 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
538 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
539 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
540 | ␉ ␉ if (ret == -1)␊ |
541 | ␉ ␉ {␊ |
542 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
543 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
544 | if (ret == -1)␊ |
545 | {␊ |
546 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
547 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
548 | if (ret == -1)␊ |
549 | {␊ |
550 | // Not found any alternate locations, using the original kernel image path.␊ |
551 | strcpy(bootFileSpec, bootFile);␊ |
552 | }␊ |
553 | }␊ |
554 | }␊ |
555 | ␉␉␉␊ |
556 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
557 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
558 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
559 | {␊ |
560 | archCpuType = CPU_TYPE_I386;␊ |
561 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
562 | }␊ |
563 | ␉␉␉␊ |
564 | } while (0);␊ |
565 | ␊ |
566 | clearActivityIndicator();␊ |
567 | #if DEBUG␊ |
568 | printf("Pausing...");␊ |
569 | sleep(8);␊ |
570 | #endif␊ |
571 | ␊ |
572 | if (ret <= 0) {␊ |
573 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
574 | ␊ |
575 | ␉␉␉if(gui.initialised) {␊ |
576 | ␉␉␉␉sleep(1);␊ |
577 | ␉␉␉␉drawBackground();␊ |
578 | ␉␉␉␉gui.devicelist.draw = true;␊ |
579 | ␉␉␉␉gui.redraw = true;␊ |
580 | ␉␉␉}␊ |
581 | if (gBootFileType == kNetworkDeviceType) {␊ |
582 | // Return control back to PXE. Don't unload PXE base code.␊ |
583 | gUnloadPXEOnExit = false;␊ |
584 | break;␊ |
585 | }␊ |
586 | } else {␊ |
587 | /* Won't return if successful. */␊ |
588 | ret = ExecKernel(binary);␊ |
589 | }␊ |
590 | }␊ |
591 | ␊ |
592 | // chainboot␊ |
593 | if (status==1) {␊ |
594 | ␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
595 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
596 | ␉}␊ |
597 | }␊ |
598 | ␉␊ |
599 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
600 | ␉nbpUnloadBaseCode();␊ |
601 | }␊ |
602 | }␊ |
603 | ␊ |
604 | /*!␊ |
605 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
606 | */␊ |
607 | /*␊ |
608 | static void selectBiosDevice(void)␊ |
609 | {␊ |
610 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
611 | CacheReset();␊ |
612 | diskFreeMap(oldMap);␊ |
613 | oldMap = NULL;␊ |
614 | ␊ |
615 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
616 | ␊ |
617 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
618 | BVRef bootVol = selectBootVolume(bvchain);␊ |
619 | gBootVolume = bootVol;␊ |
620 | setRootVolume(bootVol);␊ |
621 | gBIOSDev = dev;␊ |
622 | }␊ |
623 | */␊ |
624 | ␊ |
625 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
626 | #define NMAX 5000␊ |
627 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
628 | ␊ |
629 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
630 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
631 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
632 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
633 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
634 | ␊ |
635 | unsigned long Adler32(unsigned char *buf, long len)␊ |
636 | {␊ |
637 | unsigned long s1 = 1; // adler & 0xffff;␊ |
638 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
639 | unsigned long result;␊ |
640 | int k;␊ |
641 | ␊ |
642 | while (len > 0) {␊ |
643 | k = len < NMAX ? len : NMAX;␊ |
644 | len -= k;␊ |
645 | while (k >= 16) {␊ |
646 | DO16(buf);␊ |
647 | buf += 16;␊ |
648 | k -= 16;␊ |
649 | }␊ |
650 | if (k != 0) do {␊ |
651 | s1 += *buf++;␊ |
652 | s2 += s1;␊ |
653 | } while (--k);␊ |
654 | s1 %= BASE;␊ |
655 | s2 %= BASE;␊ |
656 | }␊ |
657 | result = (s2 << 16) | s1;␊ |
658 | return OSSwapHostToBigInt32(result);␊ |
659 | }␊ |
660 |