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Source at commit 639 created 13 years 8 months ago. By meklort, Updated embedding code, bss segment nolonger overlaps Symbols module. Symbols module can now be loaded correctly | |
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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 "platform.h"␊ |
60 | #include "graphics.h"␊ |
61 | ␊ |
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 | #ifndef OPTION_ROM␊ |
73 | bool gEnableCDROMRescan;␊ |
74 | bool gScanSingleDrive;␊ |
75 | #endif␊ |
76 | ␊ |
77 | ␊ |
78 | int bvCount = 0;␊ |
79 | //int␉menucount = 0;␊ |
80 | int gDeviceCount = 0; ␊ |
81 | ␊ |
82 | BVRef bvr;␊ |
83 | BVRef menuBVR;␊ |
84 | BVRef bvChain;␊ |
85 | ␊ |
86 | //static void selectBiosDevice(void);␊ |
87 | static unsigned long Adler32(unsigned char *buffer, long length);␊ |
88 | static bool getOSVersion(char *str);␊ |
89 | ␊ |
90 | #ifndef OPTION_ROM␊ |
91 | static bool gUnloadPXEOnExit = false;␊ |
92 | #endif␊ |
93 | ␊ |
94 | /*␊ |
95 | * How long to wait (in seconds) to load the␊ |
96 | * kernel after displaying the "boot:" prompt.␊ |
97 | */␊ |
98 | #define kBootErrorTimeout 5␊ |
99 | ␊ |
100 | /*␊ |
101 | * Default path to kernel cache file␊ |
102 | */␊ |
103 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
104 | ␊ |
105 | //==========================================================================␊ |
106 | // Zero the BSS.␊ |
107 | ␊ |
108 | static void zeroBSS(void)␊ |
109 | {␊ |
110 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
111 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
112 | ␉␊ |
113 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
114 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
115 | }␊ |
116 | ␊ |
117 | //==========================================================================␊ |
118 | // Malloc error function␊ |
119 | ␊ |
120 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
121 | {␊ |
122 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
123 | }␊ |
124 | ␊ |
125 | //==========================================================================␊ |
126 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
127 | //␊ |
128 | void initialize_runtime(void)␊ |
129 | {␊ |
130 | ␉zeroBSS();␊ |
131 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
132 | }␊ |
133 | ␊ |
134 | //==========================================================================␊ |
135 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
136 | ␊ |
137 | int ExecKernel(void *binary)␊ |
138 | {␊ |
139 | entry_t kernelEntry;␊ |
140 | int ret;␊ |
141 | ␉␊ |
142 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
143 | ␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊ |
144 | ␊ |
145 | ret = DecodeKernel(binary,␊ |
146 | &kernelEntry,␊ |
147 | (char **) &bootArgs->kaddr,␊ |
148 | (int *)&bootArgs->ksize );␊ |
149 | ␊ |
150 | if ( ret != 0 )␊ |
151 | return ret;␊ |
152 | // Reserve space for boot args␊ |
153 | reserveKernBootStruct();␊ |
154 | ␉␊ |
155 | // Load boot drivers from the specifed root path.␊ |
156 | ␉execute_hook("DecodedKernel", (void*)binary, NULL, NULL, NULL);␊ |
157 | ␊ |
158 | ␉␊ |
159 | ␉setupFakeEfi();␊ |
160 | ␉␊ |
161 | if (!gHaveKernelCache) {␊ |
162 | ␉␉LoadDrivers("/");␊ |
163 | }␊ |
164 | ␉␊ |
165 | clearActivityIndicator();␊ |
166 | ␉␊ |
167 | if (gErrors) {␊ |
168 | printf("Errors encountered while starting up the computer.\n");␊ |
169 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
170 | sleep(kBootErrorTimeout);␊ |
171 | }␊ |
172 | ␉␊ |
173 | ␉md0Ramdisk();␊ |
174 | ␉␊ |
175 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
176 | #ifndef OPTION_ROM␊ |
177 | // Cleanup the PXE base code.␊ |
178 | ␉␊ |
179 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
180 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
181 | {␊ |
182 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
183 | sleep(2);␊ |
184 | }␊ |
185 | }␊ |
186 | #endif ␊ |
187 | bool dummyVal;␊ |
188 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal)␊ |
189 | ␉{␊ |
190 | ␉␉printf("Press any key to continue...");␊ |
191 | ␉␉getc();␊ |
192 | ␉}␊ |
193 | ␉␉␊ |
194 | ␉if (bootArgs->Video.v_display == VGA_TEXT_MODE)␊ |
195 | ␉{␊ |
196 | ␉␉setVideoMode( GRAPHICS_MODE, 0 );␊ |
197 | ␉␉// Draw gray screen. NOTE: no boot image, that's in the gui module␊ |
198 | #ifndef OPTION_ROM␊ |
199 | ␉␉if(!gVerboseMode) drawColorRectangle(0, 0, DEFAULT_SCREEN_WIDTH, DEFAULT_SCREEN_HEIGHT, 0x01); ␊ |
200 | #endif␊ |
201 | ␉}␊ |
202 | ␊ |
203 | ␉␊ |
204 | ␉setupBooterLog();␊ |
205 | ␉␊ |
206 | finalizeBootStruct();␊ |
207 | ␉␊ |
208 | ␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␉// Notify modules that the kernel is about to be started␊ |
209 | ␊ |
210 | ␉// Jump to kernel's entry point. There's no going back now.␊ |
211 | startprog( kernelEntry, bootArgs );␊ |
212 | ␉␊ |
213 | // Not reached␊ |
214 | ␉␊ |
215 | return 0;␊ |
216 | }␊ |
217 | ␊ |
218 | //==========================================================================␊ |
219 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
220 | // before. Multiboot does its own runtime initialization, does some of its␊ |
221 | // own things, and then calls common_boot.␊ |
222 | void boot(int biosdev)␊ |
223 | {␊ |
224 | ␉initialize_runtime();␊ |
225 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
226 | ␉enableA20();␊ |
227 | ␉common_boot(biosdev);␊ |
228 | }␊ |
229 | ␊ |
230 | //==========================================================================␊ |
231 | // The 'main' function for the booter. Called by boot0 when booting␊ |
232 | // from a block device, or by the network booter.␊ |
233 | //␊ |
234 | // arguments:␊ |
235 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
236 | // that the booter was loaded from.␊ |
237 | //␊ |
238 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
239 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
240 | // next boot device on its list.␊ |
241 | void common_boot(int biosdev)␊ |
242 | {␊ |
243 | int status;␊ |
244 | char *bootFile;␊ |
245 | unsigned long adler32;␊ |
246 | bool quiet;␊ |
247 | bool firstRun = true;␊ |
248 | bool instantMenu;␊ |
249 | #ifndef OPTION_ROM␊ |
250 | bool rescanPrompt;␊ |
251 | #endif␊ |
252 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
253 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
254 | ␉␊ |
255 | #ifndef OPTION_ROM␊ |
256 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
257 | // the base code will result in a hang or kernel panic.␊ |
258 | gUnloadPXEOnExit = true;␊ |
259 | #endif␊ |
260 | ␉␊ |
261 | // Record the device that the booter was loaded from.␊ |
262 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
263 | ␉␊ |
264 | // Initialize boot info structure.␊ |
265 | initKernBootStruct();␊ |
266 | ␉␊ |
267 | ␉initBooterLog();␊ |
268 | ␉␊ |
269 | // Setup VGA text mode.␊ |
270 | // Not sure if it is safe to call setVideoMode() before the␊ |
271 | // config table has been loaded. Call video_mode() instead.␊ |
272 | #if DEBUG␊ |
273 | printf("before video_mode\n");␊ |
274 | #endif␊ |
275 | video_mode( 2 ); // 80x25 mono text mode.␊ |
276 | #if DEBUG␊ |
277 | printf("after video_mode\n");␊ |
278 | #endif␊ |
279 | ␉␊ |
280 | // Scan and record the system's hardware information.␊ |
281 | scan_platform();␊ |
282 | ␉␊ |
283 | // First get info for boot volume.␊ |
284 | scanBootVolumes(gBIOSDev, 0);␊ |
285 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
286 | setBootGlobals(bvChain);␊ |
287 | ␉␊ |
288 | // Load boot.plist config file␊ |
289 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
290 | ␉␊ |
291 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
292 | gBootMode |= kBootModeQuiet;␊ |
293 | }␊ |
294 | ␉␊ |
295 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
296 | if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
297 | firstRun = false;␊ |
298 | }␊ |
299 | ␉␊ |
300 | #ifndef OPTION_ROM␊ |
301 | ␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
302 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
303 | gScanSingleDrive = true;␊ |
304 | }␊ |
305 | ␉␊ |
306 | ␉// Create a list of partitions on device(s).␊ |
307 | if (gScanSingleDrive)␊ |
308 | ␉{␊ |
309 | ␉␉scanBootVolumes(gBIOSDev, &bvCount);␊ |
310 | } ␊ |
311 | ␉else ␊ |
312 | #endif␊ |
313 | ␉{␊ |
314 | ␉␉scanDisks(gBIOSDev, &bvCount);␊ |
315 | }␊ |
316 | ␉␊ |
317 | ␉// Create a separated bvr chain using the specified filters.␊ |
318 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
319 | ␉gBootVolume = selectBootVolume(bvChain);␊ |
320 | ␉␊ |
321 | ␉␊ |
322 | ␉// Intialize module system␊ |
323 | ␉if(init_module_system())␊ |
324 | ␉{␊ |
325 | ␉␉load_all_modules();␊ |
326 | ␉}␊ |
327 | ␉␊ |
328 | ␉execute_hook("ModulesLoaded", NULL, NULL, NULL, NULL);␊ |
329 | ␊ |
330 | ␉␊ |
331 | #ifndef OPTION_ROM␊ |
332 | // Loading preboot ramdisk if exists.␊ |
333 | loadPrebootRAMDisk();␊ |
334 | ␉␊ |
335 | // Disable rescan option by default␊ |
336 | gEnableCDROMRescan = false;␊ |
337 | ␉␊ |
338 | // Enable it with Rescan=y in system config␊ |
339 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
340 | gEnableCDROMRescan = true;␊ |
341 | }␊ |
342 | ␉␊ |
343 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
344 | rescanPrompt = false;␊ |
345 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
346 | gEnableCDROMRescan = promptForRescanOption();␊ |
347 | }␊ |
348 | #endif␊ |
349 | ␉␊ |
350 | ␊ |
351 | ␉␊ |
352 | ␉␊ |
353 | #if DEBUG␊ |
354 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
355 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
356 | getc();␊ |
357 | #endif␊ |
358 | ␉␊ |
359 | ␉␊ |
360 | ␉␊ |
361 | setBootGlobals(bvChain);␊ |
362 | ␉␊ |
363 | // Parse args, load and start kernel.␊ |
364 | while (1) {␊ |
365 | const char *val;␊ |
366 | int len;␊ |
367 | int trycache;␊ |
368 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
369 | int ret = -1;␊ |
370 | void *binary = (void *)kLoadAddr;␊ |
371 | bool tryresume;␊ |
372 | bool tryresumedefault;␊ |
373 | bool forceresume;␊ |
374 | ␉␉␊ |
375 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
376 | char bootFileSpec[512];␊ |
377 | ␉␉␊ |
378 | // Initialize globals.␊ |
379 | ␉␉␊ |
380 | sysConfigValid = false;␊ |
381 | gErrors = false;␊ |
382 | ␉␉␊ |
383 | status = getBootOptions(firstRun);␊ |
384 | firstRun = false;␊ |
385 | if (status == -1) continue;␊ |
386 | ␉␉␊ |
387 | status = processBootOptions();␊ |
388 | // Status==1 means to chainboot␊ |
389 | if ( status == 1 ) break;␊ |
390 | // Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
391 | if ( status == -1 )␊ |
392 | {␊ |
393 | ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
394 | ␉␉␉if(gBootVolume == NULL)␊ |
395 | ␉␉␉{␊ |
396 | ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
397 | #ifndef OPTION_ROM␊ |
398 | ␉␉␉␉if (gEnableCDROMRescan)␊ |
399 | ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
400 | #endif␊ |
401 | ␉␉␉␉␊ |
402 | ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
403 | ␉␉␉␉setBootGlobals(bvChain);␊ |
404 | ␉␉␉}␊ |
405 | ␉␉␉continue;␊ |
406 | }␊ |
407 | ␉␉␊ |
408 | ␉␉␊ |
409 | ␉␉␊ |
410 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
411 | ␉␉␉␉␊ |
412 | ␉␉␊ |
413 | ␉␉// Find out which version mac os we're booting.␊ |
414 | ␉␉getOSVersion(gMacOSVersion);␊ |
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 | ␉␉␊ |
427 | ␉␉// Notify moduals that we are attempting to boot␊ |
428 | ␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊ |
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 | ␉␉␉sleep(1);␊ |
576 | #ifndef OPTION_ROM␊ |
577 | if (gBootFileType == kNetworkDeviceType) {␊ |
578 | // Return control back to PXE. Don't unload PXE base code.␊ |
579 | gUnloadPXEOnExit = false;␊ |
580 | break;␊ |
581 | }␊ |
582 | #endif␊ |
583 | } else {␊ |
584 | /* Won't return if successful. */␊ |
585 | ␉␉␉// Notify modules that ExecKernel is about to be called␊ |
586 | ret = ExecKernel(binary);␊ |
587 | }␊ |
588 | }␊ |
589 | ␊ |
590 | // chainboot␊ |
591 | if (status==1) {␊ |
592 | ␉␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
593 | ␉␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
594 | ␉␉}␊ |
595 | }␊ |
596 | #ifndef OPTION_ROM␊ |
597 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
598 | ␉␉nbpUnloadBaseCode();␊ |
599 | }␊ |
600 | #endif␊ |
601 | }␊ |
602 | ␊ |
603 | /*!␊ |
604 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
605 | */␊ |
606 | /*␊ |
607 | static void selectBiosDevice(void)␊ |
608 | {␊ |
609 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
610 | CacheReset();␊ |
611 | diskFreeMap(oldMap);␊ |
612 | oldMap = NULL;␊ |
613 | ␊ |
614 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
615 | ␊ |
616 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
617 | BVRef bootVol = selectBootVolume(bvchain);␊ |
618 | gBootVolume = bootVol;␊ |
619 | setRootVolume(bootVol);␊ |
620 | gBIOSDev = dev;␊ |
621 | }␊ |
622 | */␊ |
623 | ␊ |
624 | static bool getOSVersion(char *str)␊ |
625 | {␊ |
626 | ␉bool valid = false;␊ |
627 | ␉config_file_t systemVersion;␊ |
628 | ␉const char *val;␊ |
629 | ␉int len;␊ |
630 | ␉␊ |
631 | ␉if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion))␊ |
632 | ␉{␊ |
633 | ␉␉valid = true;␊ |
634 | ␉}␊ |
635 | ␉else if (!loadConfigFile("System/Library/CoreServices/ServerVersion.plist", &systemVersion))␊ |
636 | ␉{␊ |
637 | ␉␉valid = true;␊ |
638 | ␉}␊ |
639 | ␉␊ |
640 | ␉if (valid)␊ |
641 | ␉{␊ |
642 | ␉␉if (getValueForKey(kProductVersion, &val, &len, &systemVersion))␊ |
643 | ␉␉{␊ |
644 | ␉␉␉// getValueForKey uses const char for val␊ |
645 | ␉␉␉// so copy it and trim␊ |
646 | ␉␉␉*str = '\0';␊ |
647 | ␉␉␉strncat(str, val, MIN(len, 4));␊ |
648 | ␉␉}␊ |
649 | ␉␉else␊ |
650 | ␉␉␉valid = false;␊ |
651 | ␉}␊ |
652 | ␉␊ |
653 | ␉return valid;␊ |
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 |