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 "modules.h"␊ |
62 | ␊ |
63 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
64 | bool gOverrideKernel;␊ |
65 | static char gBootKernelCacheFile[512];␊ |
66 | static char gCacheNameAdler[64 + 256];␊ |
67 | //char *gPlatformName = gCacheNameAdler; disabled␊ |
68 | char gRootDevice[512];␊ |
69 | char gMKextName[512];␊ |
70 | bool gEnableCDROMRescan;␊ |
71 | bool gScanSingleDrive;␊ |
72 | ␊ |
73 | int bvCount = 0;␊ |
74 | //int␉␉menucount = 0;␊ |
75 | int gDeviceCount = 0;␊ |
76 | ␊ |
77 | BVRef bvr;␊ |
78 | BVRef menuBVR;␊ |
79 | BVRef bvChain;␊ |
80 | bool useGUI;␊ |
81 | ␊ |
82 | //static void selectBiosDevice(void);␊ |
83 | static unsigned long Adler32(unsigned char *buffer, long length);␊ |
84 | ␊ |
85 | ␊ |
86 | static bool gUnloadPXEOnExit = false;␊ |
87 | ␊ |
88 | /*␊ |
89 | * How long to wait (in seconds) to load the␊ |
90 | * kernel after displaying the "boot:" prompt.␊ |
91 | */␊ |
92 | #define kBootErrorTimeout 5␊ |
93 | ␊ |
94 | /*␊ |
95 | * Default path to kernel cache file␊ |
96 | */␊ |
97 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
98 | ␊ |
99 | //==========================================================================␊ |
100 | // Zero the BSS.␊ |
101 | ␊ |
102 | static void zeroBSS(void)␊ |
103 | {␊ |
104 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
105 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
106 | ␊ |
107 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
108 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
109 | }␊ |
110 | ␊ |
111 | //==========================================================================␊ |
112 | // Malloc error function␊ |
113 | ␊ |
114 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
115 | {␊ |
116 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
117 | }␊ |
118 | ␊ |
119 | //==========================================================================␊ |
120 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
121 | //␊ |
122 | void initialize_runtime(void)␊ |
123 | {␊ |
124 | ␉zeroBSS();␊ |
125 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
126 | }␊ |
127 | ␊ |
128 | //==========================================================================␊ |
129 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
130 | ␊ |
131 | static int ExecKernel(void *binary)␊ |
132 | {␊ |
133 | entry_t kernelEntry;␊ |
134 | int ret;␊ |
135 | ␊ |
136 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
137 | ␊ |
138 | ret = DecodeKernel(binary,␊ |
139 | &kernelEntry,␊ |
140 | (char **) &bootArgs->kaddr,␊ |
141 | (int *)&bootArgs->ksize );␊ |
142 | ␊ |
143 | if ( ret != 0 )␊ |
144 | return ret;␊ |
145 | ␊ |
146 | // Reserve space for boot args␊ |
147 | reserveKernBootStruct();␊ |
148 | ␊ |
149 | // Load boot drivers from the specifed root path.␊ |
150 | ␊ |
151 | if (!gHaveKernelCache) {␊ |
152 | LoadDrivers("/");␊ |
153 | }␊ |
154 | ␊ |
155 | clearActivityIndicator();␊ |
156 | ␊ |
157 | if (gErrors) {␊ |
158 | printf("Errors encountered while starting up the computer.\n");␊ |
159 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
160 | sleep(kBootErrorTimeout);␊ |
161 | }␊ |
162 | ␊ |
163 | setupFakeEfi();␊ |
164 | ␊ |
165 | md0Ramdisk();␊ |
166 | ␊ |
167 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
168 | ␊ |
169 | // Cleanup the PXE base code.␊ |
170 | ␊ |
171 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
172 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
173 | {␊ |
174 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
175 | sleep(2);␊ |
176 | }␊ |
177 | }␊ |
178 | ␊ |
179 | bool dummyVal;␊ |
180 | ␊ |
181 | ␉//Azi: Wait=y is breaking other keys when typed "after them" at boot prompt.␊ |
182 | ␉// Works properly if typed in first place or used on Boot.plist.␊ |
183 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal) {␊ |
184 | ␉␉pause();␊ |
185 | ␉}␊ |
186 | ␊ |
187 | ␉usb_loop();␊ |
188 | ␉␊ |
189 | ␉// Notify modules that the kernel is about to be started␊ |
190 | ␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␊ |
191 | ␊ |
192 | // If we were in text mode, switch to graphics mode.␊ |
193 | // This will draw the boot graphics unless we are in␊ |
194 | // verbose mode.␊ |
195 | ␊ |
196 | if(gVerboseMode)␊ |
197 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
198 | else␊ |
199 | drawBootGraphics();␊ |
200 | ␉␊ |
201 | ␉setupBooterLog();␊ |
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 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
216 | // before. Multiboot does its own runtime initialization, does some of its␊ |
217 | // own things, and then calls common_boot.␊ |
218 | void boot(int biosdev)␊ |
219 | {␊ |
220 | ␉initialize_runtime();␊ |
221 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
222 | ␉enableA20();␊ |
223 | ␉common_boot(biosdev);␊ |
224 | }␊ |
225 | ␊ |
226 | //==========================================================================␊ |
227 | // The 'main' function for the booter. Called by boot0 when booting␊ |
228 | // from a block device, or by the network booter.␊ |
229 | //␊ |
230 | // arguments:␊ |
231 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
232 | // that the booter was loaded from.␊ |
233 | //␊ |
234 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
235 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
236 | // next boot device on its list.␊ |
237 | void common_boot(int biosdev)␊ |
238 | {␊ |
239 | int status;␊ |
240 | char *bootFile;␊ |
241 | unsigned long adler32;␊ |
242 | bool quiet;␊ |
243 | bool firstRun = true;␊ |
244 | bool instantMenu;␊ |
245 | bool rescanPrompt;␊ |
246 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
247 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
248 | ␊ |
249 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
250 | // the base code will result in a hang or kernel panic.␊ |
251 | gUnloadPXEOnExit = true;␊ |
252 | ␊ |
253 | // Record the device that the booter was loaded from.␊ |
254 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
255 | ␊ |
256 | // Initialize boot info structure.␊ |
257 | initKernBootStruct();␊ |
258 | ␊ |
259 | ␉initBooterLog();␊ |
260 | ␊ |
261 | // Setup VGA text mode.␊ |
262 | // Not sure if it is safe to call setVideoMode() before the␊ |
263 | // config table has been loaded. Call video_mode() instead.␊ |
264 | #if DEBUG␊ |
265 | printf("before video_mode\n");␊ |
266 | #endif␊ |
267 | video_mode( 2 ); // 80x25 mono text mode.␊ |
268 | #if DEBUG␊ |
269 | printf("after video_mode\n");␊ |
270 | #endif␊ |
271 | ␊ |
272 | // Scan and record the system's hardware information.␊ |
273 | scan_platform();␊ |
274 | ␊ |
275 | // First get info for boot volume.␊ |
276 | scanBootVolumes(gBIOSDev, 0);␊ |
277 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
278 | setBootGlobals(bvChain);␊ |
279 | ␊ |
280 | // Load boot.plist config file␊ |
281 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
282 | ␊ |
283 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
284 | gBootMode |= kBootModeQuiet;␊ |
285 | }␊ |
286 | ␊ |
287 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
288 | if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
289 | firstRun = false;␊ |
290 | }␊ |
291 | ␊ |
292 | ␉// Intialize module system␊ |
293 | ␉if (init_module_system())␊ |
294 | ␉{␊ |
295 | ␉␉load_all_modules();␊ |
296 | ␉}␊ |
297 | ␊ |
298 | ␉// Loading preboot ramdisk if exists.␊ |
299 | ␉loadPrebootRAMDisk();␊ |
300 | ␊ |
301 | // Disable rescan option by default␊ |
302 | gEnableCDROMRescan = false;␊ |
303 | ␊ |
304 | // Enable it with Rescan=y in system config␊ |
305 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
306 | gEnableCDROMRescan = true;␊ |
307 | }␊ |
308 | ␊ |
309 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
310 | rescanPrompt = false;␊ |
311 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
312 | gEnableCDROMRescan = promptForRescanOption();␊ |
313 | }␊ |
314 | ␊ |
315 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
316 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
317 | gScanSingleDrive = true;␊ |
318 | }␊ |
319 | ␊ |
320 | // Create a list of partitions on device(s).␊ |
321 | if (gScanSingleDrive) {␊ |
322 | scanBootVolumes(gBIOSDev, &bvCount);␊ |
323 | } else {␊ |
324 | scanDisks(gBIOSDev, &bvCount);␊ |
325 | }␊ |
326 | ␊ |
327 | // Create a separated bvr chain using the specified filters.␊ |
328 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
329 | ␊ |
330 | gBootVolume = selectBootVolume(bvChain);␊ |
331 | ␊ |
332 | #if DEBUG␊ |
333 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
334 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
335 | getc();␊ |
336 | #endif␊ |
337 | ␊ |
338 | useGUI = true;␊ |
339 | // Override useGUI default␊ |
340 | getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);␊ |
341 | ␊ |
342 | ␉/*␊ |
343 | ␉ * AutoResolution␊ |
344 | ␉ */␊ |
345 | ␉// Before initGui, patch the video bios with the correct resolution␊ |
346 | ␉UInt32 params[4];␊ |
347 | ␉params[3] = 0;␊ |
348 | ␉␊ |
349 | ␉// default to "false" as it doesn't work for everyone atm.␊ |
350 | ␉// http://forum.voodooprojects.org/index.php/topic,1227.0.html␊ |
351 | ␉gAutoResolution = false;␊ |
352 | ␉␊ |
353 | ␉getBoolForKey(kAutoResolutionKey, &gAutoResolution, &bootInfo->bootConfig);␊ |
354 | ␉␊ |
355 | ␉//Open the VBios and store VBios or Tables␊ |
356 | ␉map = openVbios(CT_UNKWN);␊ |
357 | ␉␊ |
358 | ␉if (gAutoResolution == true)␊ |
359 | ␉{␊ |
360 | ␉␉//Get Resolution from Graphics Mode key or EDID␊ |
361 | ␉␉int count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);␊ |
362 | ␉␉if (count < 3)␊ |
363 | ␉␉␉getResolution(params);␊ |
364 | ␉␉else␊ |
365 | ␉␉{␊ |
366 | ␉␉␉if ( params[2] == 256 ) params[2] = 8;␊ |
367 | ␉␉␉if ( params[2] == 555 ) params[2] = 16;␊ |
368 | ␉␉␉if ( params[2] == 888 ) params[2] = 32;␊ |
369 | ␉␉}␊ |
370 | ␉␉␊ |
371 | #ifdef AUTORES_DEBUG␊ |
372 | ␉printf("Resolution: %dx%d\n",params[0], params[1]);␊ |
373 | #endif␉␊ |
374 | ␉␉␊ |
375 | ␉␉//perfom the actual VBIOS patching␊ |
376 | ␉␉if (params[0] != 0 && params[1] != 0)␊ |
377 | ␉␉␉patchVbios(map, params[0], params[1], params[2], 0, 0);␊ |
378 | ␉}␊ |
379 | ␊ |
380 | if (useGUI && initGUI())␊ |
381 | ␉{␊ |
382 | ␉␉// initGUI() returned with an error, disabling GUI.␊ |
383 | ␉␉useGUI = false;␊ |
384 | ␉}␊ |
385 | ␊ |
386 | setBootGlobals(bvChain);␊ |
387 | ␊ |
388 | // Parse args, load and start kernel.␊ |
389 | while (1) {␊ |
390 | const char *val;␊ |
391 | int len;␊ |
392 | int trycache;␊ |
393 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
394 | int ret = -1;␊ |
395 | void *binary = (void *)kLoadAddr;␊ |
396 | bool tryresume;␊ |
397 | bool tryresumedefault;␊ |
398 | bool forceresume;␊ |
399 | ␊ |
400 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
401 | char bootFileSpec[512];␊ |
402 | ␉␉␊ |
403 | // Initialize globals.␊ |
404 | ␊ |
405 | sysConfigValid = false;␊ |
406 | gErrors = false;␊ |
407 | ␊ |
408 | status = getBootOptions(firstRun);␊ |
409 | firstRun = false;␊ |
410 | if (status == -1) continue;␊ |
411 | ␊ |
412 | ␉␉//Azi: i'm now almost sure that here is the right place to do this! - test (gBootVolume == NULL)␊ |
413 | ␉␉// Turn off any GUI elements, draw background and update VRAM.␊ |
414 | ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
415 | ␉␉{␊ |
416 | ␉␉␉gui.devicelist.draw = false;␊ |
417 | ␉␉␉gui.bootprompt.draw = false;␊ |
418 | ␉␉␉gui.menu.draw = false;␊ |
419 | ␉␉␉gui.infobox.draw = false;␊ |
420 | ␉␉␉gui.logo.draw = false;␊ |
421 | ␉␉␉drawBackground();␊ |
422 | ␉␉␉updateVRAM();␊ |
423 | ␉␉}␊ |
424 | ␉␉␊ |
425 | ␉␉//␊ |
426 | ␉␉//AutoResolution - Reapply the patch or cancel if Graphics Mode was incorrect␊ |
427 | ␉␉//␉␉␉␉ or EDID Info was insane␊ |
428 | ␉␉getBoolForKey(kAutoResolutionKey, &gAutoResolution, &bootInfo->bootConfig);␊ |
429 | ␉␉␊ |
430 | ␉␉//Restore the vbios for Cancelation␊ |
431 | ␉␉if ((gAutoResolution == false) && map)␊ |
432 | ␉␉{␊ |
433 | ␉␉␉restoreVbios(map);␊ |
434 | ␉␉␉closeVbios(map);␉␊ |
435 | ␉␉}␊ |
436 | ␉␉␊ |
437 | ␉␉if ((gAutoResolution == true) && map)␊ |
438 | ␉␉{␊ |
439 | ␉␉␉// If mode has been switched during boot menu␊ |
440 | ␉␉␉// use the new resolution␊ |
441 | ␉␉␉if (map->hasSwitched == true)␊ |
442 | ␉␉␉{␊ |
443 | ␉␉␉␉params[0] = map->currentX;␊ |
444 | ␉␉␉␉params[1] = map->currentY;␊ |
445 | ␉␉␉␉params[2] = 32;␊ |
446 | ␉␉␉}␊ |
447 | ␉␉␉else␊ |
448 | ␉␉␉{␊ |
449 | ␉␉␉␉//or get resolution from Graphics Mode or EDID␊ |
450 | ␉␉␉␉int count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);␊ |
451 | ␉␉␉␉if (count < 3)␊ |
452 | ␉␉␉␉␉getResolution(params);␊ |
453 | ␉␉␉␉else␊ |
454 | ␉␉␉␉{␊ |
455 | ␉␉␉␉␉if ( params[2] == 256 ) params[2] = 8;␊ |
456 | ␉␉␉␉␉if ( params[2] == 555 ) params[2] = 16;␊ |
457 | ␉␉␉␉␉if ( params[2] == 888 ) params[2] = 32;␊ |
458 | ␉␉␉␉}␊ |
459 | ␉␉␉}␊ |
460 | ␉␉␉␊ |
461 | ␉␉␉//Resolution has changed, reapply the patch␊ |
462 | ␉␉␉if ((params[0] != 0) && (params[1] != 0) && (params[0] != map->currentX) &&␊ |
463 | ␉␉␉␉(params[1] != map->currentY))␊ |
464 | ␉␉␉{␊ |
465 | ␉␉␉␉patchVbios(map, params[0], params[1], params[2], 0, 0);␊ |
466 | ␉␉␉}␊ |
467 | ␉␉␉closeVbios(map);␊ |
468 | ␉␉}␊ |
469 | ␉␉␊ |
470 | status = processBootOptions();␊ |
471 | ␉␉// Status == 1 means to chainboot␊ |
472 | ␉␉if ( status ==␉1 ) break;␊ |
473 | ␉␉// Status == -1 means that gBootVolume is NULL. Config file is not mandatory anymore! ␊ |
474 | ␉␉if ( status == -1 )␊ |
475 | ␉␉{␊ |
476 | ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
477 | ␉␉␉if (gBootVolume == NULL)␊ |
478 | ␉␉␉{␊ |
479 | ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
480 | ␉␉␉␉␊ |
481 | ␉␉␉␉if (gEnableCDROMRescan)␊ |
482 | ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
483 | ␉␉␉␉␊ |
484 | ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
485 | ␉␉␉␉setBootGlobals(bvChain);␊ |
486 | ␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊ |
487 | ␉␉␉}␊ |
488 | ␉␉␉continue;␊ |
489 | ␉␉}␊ |
490 | ␉␉␊ |
491 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
492 | ␊ |
493 | ␉␉// If cpu doesn't handle 64 bit instructions,...␊ |
494 | ␉␉if (!platformCPUFeature(CPU_FEATURE_EM64T) ||␊ |
495 | ␉␉␉// ... user forced i386 kernel architecture on cpu with "em64t"...␊ |
496 | ␉␉␉getValueForKey(kArchI386Flag, &val, &len, &bootInfo->bootConfig) ||␊ |
497 | ␉␉␉// ... or forced Legacy Mode...␊ |
498 | ␉␉␉getValueForKey(kLegacyModeFlag, &val, &len, &bootInfo->bootConfig))␊ |
499 | ␉␉{␊ |
500 | ␉␉␉// ... use i386 kernel arch.␊ |
501 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
502 | ␉␉}␊ |
503 | ␉␉else␊ |
504 | ␉␉{␊ |
505 | ␉␉␉// Else use x86_64 kernel arch.␊ |
506 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
507 | ␉␉}␊ |
508 | ␉␉// Override i386/-legacy, if flagged on Boot.plist.␊ |
509 | ␉␉if (getValueForKey(kArchX86_64Flag, &val, &len, &bootInfo->bootConfig))␊ |
510 | ␉␉{␊ |
511 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
512 | ␉␉}␊ |
513 | ␉␉␊ |
514 | ␉␉if (!getBoolForKey (kWakeKey, &tryresume, &bootInfo->bootConfig)) {␊ |
515 | ␉␉␉tryresume = true;␊ |
516 | ␉␉␉tryresumedefault = true;␊ |
517 | ␉␉} else {␊ |
518 | ␉␉␉tryresumedefault = false;␊ |
519 | ␉␉}␊ |
520 | ␊ |
521 | ␉␉if (!getBoolForKey (kForceWakeKey, &forceresume, &bootInfo->bootConfig)) {␊ |
522 | ␉␉␉forceresume = false;␊ |
523 | ␉␉}␊ |
524 | ␉␉␊ |
525 | ␉␉if (forceresume) {␊ |
526 | ␉␉␉tryresume = true;␊ |
527 | ␉␉␉tryresumedefault = false;␊ |
528 | ␉␉}␊ |
529 | ␉␉␊ |
530 | ␉␉while (tryresume) {␊ |
531 | ␉␉␉const char *tmp;␊ |
532 | ␉␉␉BVRef bvr;␊ |
533 | ␉␉␉if (!getValueForKey(kWakeKeyImageKey, &val, &len, &bootInfo->bootConfig))␊ |
534 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
535 | ␉␉␉␊ |
536 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
537 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
538 | ␊ |
539 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
540 | ␉␉␉␉break;␊ |
541 | ␉␉␉␊ |
542 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
543 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
544 | ␉␉␉␉break;␊ |
545 | ␉␉␉␊ |
546 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
547 | ␉␉␉␉break;␊ |
548 | ␉␉␉␊ |
549 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
550 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
551 | ␉␉␉␉break;␊ |
552 | ␉␉␉}␊ |
553 | ␉␉␉␉␊ |
554 | ␉␉␉HibernateBoot((char *)val);␊ |
555 | ␉␉␉break;␊ |
556 | ␉␉}␊ |
557 | ␊ |
558 | // Reset cache name.␊ |
559 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
560 | ␊ |
561 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
562 | ␊ |
563 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
564 | ␊ |
565 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
566 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
567 | } else {␊ |
568 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
569 | }␊ |
570 | ␊ |
571 | // Check for cache file.␊ |
572 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
573 | !gOverrideKernel &&␊ |
574 | (gBootFileType == kBlockDeviceType) &&␊ |
575 | (gMKextName[0] == '\0') &&␊ |
576 | (gBootKernelCacheFile[0] != '\0'));␊ |
577 | ␊ |
578 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
579 | ␉␉␊ |
580 | if (trycache) do {␊ |
581 | ␊ |
582 | // if we haven't found the kernel yet, don't use the cache␊ |
583 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
584 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
585 | trycache = 0;␊ |
586 | break;␊ |
587 | }␊ |
588 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
589 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
590 | || (cachetime < kerneltime)) {␊ |
591 | trycache = 0;␊ |
592 | break;␊ |
593 | }␊ |
594 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
595 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
596 | && (cachetime < exttime)) {␊ |
597 | trycache = 0;␊ |
598 | break;␊ |
599 | }␊ |
600 | if (kerneltime > exttime) {␊ |
601 | exttime = kerneltime;␊ |
602 | }␊ |
603 | if (cachetime != (exttime + 1)) {␊ |
604 | trycache = 0;␊ |
605 | break;␊ |
606 | }␊ |
607 | } while (0);␊ |
608 | ␊ |
609 | do {␊ |
610 | if (trycache) {␊ |
611 | bootFile = gBootKernelCacheFile;␊ |
612 | verbose("Loading kernel cache %s\n", bootFile);␊ |
613 | ret = LoadFile(bootFile);␊ |
614 | binary = (void *)kLoadAddr;␊ |
615 | if (ret >= 0) {␊ |
616 | break;␊ |
617 | }␊ |
618 | }␊ |
619 | bootFile = bootInfo->bootFile;␊ |
620 | ␊ |
621 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
622 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
623 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
624 | ␉ ␉ if (ret == -1)␊ |
625 | ␉ ␉ {␊ |
626 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
627 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
628 | if (ret == -1)␊ |
629 | {␊ |
630 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
631 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
632 | if (ret == -1)␊ |
633 | {␊ |
634 | // Not found any alternate locations, using the original kernel image path.␊ |
635 | strcpy(bootFileSpec, bootFile);␊ |
636 | }␊ |
637 | }␊ |
638 | }␊ |
639 | ␉␉␉␊ |
640 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
641 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
642 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
643 | {␊ |
644 | archCpuType = CPU_TYPE_I386;␊ |
645 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
646 | }␊ |
647 | ␉␉␉␊ |
648 | } while (0);␊ |
649 | ␊ |
650 | clearActivityIndicator();␊ |
651 | #if DEBUG␊ |
652 | printf("Pausing...");␊ |
653 | sleep(8);␊ |
654 | #endif␊ |
655 | ␊ |
656 | if (ret <= 0) {␊ |
657 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
658 | ␊ |
659 | ␉␉␉sleep(1);␊ |
660 | ␉␉␉␊ |
661 | if (gBootFileType == kNetworkDeviceType) {␊ |
662 | // Return control back to PXE. Don't unload PXE base code.␊ |
663 | gUnloadPXEOnExit = false;␊ |
664 | break;␊ |
665 | }␊ |
666 | } else {␊ |
667 | /* Won't return if successful. */␊ |
668 | ␉␉␉// Notify modules that ExecKernel is about to be called␊ |
669 | ␉␉␉execute_hook("ExecKernel", binary, NULL, NULL, NULL);␊ |
670 | ␉␉␉␊ |
671 | ret = ExecKernel(binary);␊ |
672 | }␊ |
673 | }␊ |
674 | ␊ |
675 | // chainboot␊ |
676 | if (status==1) {␊ |
677 | ␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
678 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
679 | ␉}␊ |
680 | }␊ |
681 | ␉␊ |
682 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
683 | ␉nbpUnloadBaseCode();␊ |
684 | }␊ |
685 | }␊ |
686 | ␊ |
687 | /*!␊ |
688 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
689 | */␊ |
690 | /*␊ |
691 | static void selectBiosDevice(void)␊ |
692 | {␊ |
693 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
694 | CacheReset();␊ |
695 | diskFreeMap(oldMap);␊ |
696 | oldMap = NULL;␊ |
697 | ␊ |
698 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
699 | ␊ |
700 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
701 | BVRef bootVol = selectBootVolume(bvchain);␊ |
702 | gBootVolume = bootVol;␊ |
703 | setRootVolume(bootVol);␊ |
704 | gBIOSDev = dev;␊ |
705 | }␊ |
706 | */␊ |
707 | ␊ |
708 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
709 | #define NMAX 5000␊ |
710 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
711 | ␊ |
712 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
713 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
714 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
715 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
716 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
717 | ␊ |
718 | unsigned long Adler32(unsigned char *buf, long len)␊ |
719 | {␊ |
720 | unsigned long s1 = 1; // adler & 0xffff;␊ |
721 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
722 | unsigned long result;␊ |
723 | int k;␊ |
724 | ␊ |
725 | while (len > 0) {␊ |
726 | k = len < NMAX ? len : NMAX;␊ |
727 | len -= k;␊ |
728 | while (k >= 16) {␊ |
729 | DO16(buf);␊ |
730 | buf += 16;␊ |
731 | k -= 16;␊ |
732 | }␊ |
733 | if (k != 0) do {␊ |
734 | s1 += *buf++;␊ |
735 | s2 += s1;␊ |
736 | } while (--k);␊ |
737 | s1 %= BASE;␊ |
738 | s2 %= BASE;␊ |
739 | }␊ |
740 | result = (s2 << 16) | s1;␊ |
741 | return OSSwapHostToBigInt32(result);␊ |
742 | }␊ |
743 | |