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 | //#include "bootstruct.h"␊ |
53 | //#include "libsa.h"␊ |
54 | #include "boot.h"␊ |
55 | #include "ramdisk.h" // bootstruct.h: memory.h instead of saio_internal.h␊ |
56 | #include "gui.h"␊ |
57 | #include "modules.h"␊ |
58 | #include "fake_efi.h"␊ |
59 | #include "platform.h" // bootstruct.h - device_tree.h␊ |
60 | #include "sl.h" // bootstruct.h: memory.h instead of saio_types.h␊ |
61 | ␊ |
62 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
63 | bool gOverrideKernel;␊ |
64 | static char gBootKernelCacheFile[512];␊ |
65 | static char gCacheNameAdler[64 + 256];␊ |
66 | //char *gPlatformName = gCacheNameAdler; disabled␊ |
67 | char gRootDevice[512];␊ |
68 | char gMKextName[512];␊ |
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;␊ |
80 | ␊ |
81 | //static void selectBiosDevice(void);␊ |
82 | static unsigned long Adler32(unsigned char *buffer, long length);␊ |
83 | ␊ |
84 | ␊ |
85 | static bool gUnloadPXEOnExit = false;␊ |
86 | ␊ |
87 | /*␊ |
88 | * How long to wait (in seconds) to load the␊ |
89 | * kernel after displaying the "boot:" prompt.␊ |
90 | */␊ |
91 | #define kBootErrorTimeout 5␊ |
92 | ␊ |
93 | /*␊ |
94 | * Default path to kernel cache file␊ |
95 | */␊ |
96 | #define kDefaultCachePath "/System/Library/Caches/com.apple.kernelcaches/kernelcache"␊ |
97 | ␊ |
98 | //==========================================================================␊ |
99 | // Zero the BSS.␊ |
100 | ␊ |
101 | static void zeroBSS(void)␊ |
102 | {␊ |
103 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
104 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
105 | ␊ |
106 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
107 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
108 | }␊ |
109 | ␊ |
110 | //==========================================================================␊ |
111 | // Malloc error function␊ |
112 | ␊ |
113 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
114 | {␊ |
115 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
116 | }␊ |
117 | ␊ |
118 | //==========================================================================␊ |
119 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
120 | //␊ |
121 | void initialize_runtime(void)␊ |
122 | {␊ |
123 | ␉zeroBSS();␊ |
124 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
125 | }␊ |
126 | ␊ |
127 | //==========================================================================␊ |
128 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
129 | ␊ |
130 | static int ExecKernel(void *binary)␊ |
131 | {␊ |
132 | entry_t kernelEntry;␊ |
133 | int ret;␊ |
134 | ␊ |
135 | bootArgs->kaddr = bootArgs->ksize = 0;␊ |
136 | ␊ |
137 | ret = DecodeKernel(binary,␊ |
138 | &kernelEntry,␊ |
139 | (char **) &bootArgs->kaddr,␊ |
140 | (int *)&bootArgs->ksize );␊ |
141 | ␊ |
142 | if ( ret != 0 )␊ |
143 | return ret;␊ |
144 | ␊ |
145 | // Reserve space for boot args␊ |
146 | reserveKernBootStruct();␊ |
147 | ␊ |
148 | // Load boot drivers from the specifed root path.␊ |
149 | ␊ |
150 | if (!gHaveKernelCache) {␊ |
151 | LoadDrivers("/");␊ |
152 | }␊ |
153 | ␊ |
154 | clearActivityIndicator();␊ |
155 | ␊ |
156 | if (gErrors) {␊ |
157 | printf("Errors encountered while starting up the computer.\n");␊ |
158 | printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
159 | sleep(kBootErrorTimeout);␊ |
160 | }␊ |
161 | ␊ |
162 | setupFakeEfi();␊ |
163 | ␊ |
164 | md0Ramdisk();␊ |
165 | ␊ |
166 | verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
167 | ␊ |
168 | // Cleanup the PXE base code.␊ |
169 | ␊ |
170 | if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
171 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
172 | {␊ |
173 | ␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
174 | sleep(2);␊ |
175 | }␊ |
176 | }␊ |
177 | ␊ |
178 | bool dummyVal;␊ |
179 | ␊ |
180 | ␉//Azi: Wait=y is breaking other keys when typed "after them" at boot prompt.␊ |
181 | ␉// Works properly if typed in first place or used on Boot.plist.␊ |
182 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->bootConfig) && dummyVal) {␊ |
183 | ␉␉pause();␊ |
184 | ␉}␊ |
185 | ␊ |
186 | ␉usb_loop();␊ |
187 | ␉␊ |
188 | ␉// Notify modules that the kernel is about to be started␊ |
189 | ␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␊ |
190 | ␊ |
191 | // If we were in text mode, switch to graphics mode.␊ |
192 | // This will draw the boot graphics unless we are in␊ |
193 | // verbose mode.␊ |
194 | ␊ |
195 | if(gVerboseMode)␊ |
196 | setVideoMode( GRAPHICS_MODE, 0 );␊ |
197 | else␊ |
198 | drawBootGraphics();␊ |
199 | ␉␊ |
200 | ␉setupBooterLog();␊ |
201 | ␉␊ |
202 | finalizeBootStruct();␊ |
203 | ␊ |
204 | // Jump to kernel's entry point. There's no going back now.␊ |
205 | ␊ |
206 | startprog( kernelEntry, bootArgs );␊ |
207 | ␊ |
208 | // Not reached␊ |
209 | ␊ |
210 | return 0;␊ |
211 | }␊ |
212 | ␊ |
213 | //==========================================================================␊ |
214 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
215 | // before. Multiboot does its own runtime initialization, does some of its␊ |
216 | // own things, and then calls common_boot.␊ |
217 | void boot(int biosdev)␊ |
218 | {␊ |
219 | ␉initialize_runtime();␊ |
220 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
221 | ␉enableA20();␊ |
222 | ␉common_boot(biosdev);␊ |
223 | }␊ |
224 | ␊ |
225 | //==========================================================================␊ |
226 | // The 'main' function for the booter. Called by boot0 when booting␊ |
227 | // from a block device, or by the network booter.␊ |
228 | //␊ |
229 | // arguments:␊ |
230 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
231 | // that the booter was loaded from.␊ |
232 | //␊ |
233 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
234 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
235 | // next boot device on its list.␊ |
236 | void common_boot(int biosdev)␊ |
237 | {␊ |
238 | int status;␊ |
239 | char *bootFile;␊ |
240 | unsigned long adler32;␊ |
241 | bool quiet;␊ |
242 | bool firstRun = true;␊ |
243 | bool instantMenu;␊ |
244 | bool rescanPrompt;␊ |
245 | unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
246 | unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
247 | ␊ |
248 | // Set reminder to unload the PXE base code. Neglect to unload␊ |
249 | // the base code will result in a hang or kernel panic.␊ |
250 | gUnloadPXEOnExit = true;␊ |
251 | ␊ |
252 | // Record the device that the booter was loaded from.␊ |
253 | gBIOSDev = biosdev & kBIOSDevMask;␊ |
254 | ␊ |
255 | // Initialize boot info structure.␊ |
256 | initKernBootStruct();␊ |
257 | ␊ |
258 | ␉initBooterLog();␊ |
259 | ␊ |
260 | // Setup VGA text mode.␊ |
261 | // Not sure if it is safe to call setVideoMode() before the␊ |
262 | // config table has been loaded. Call video_mode() instead.␊ |
263 | #if DEBUG␊ |
264 | printf("before video_mode\n");␊ |
265 | #endif␊ |
266 | video_mode( 2 ); // 80x25 mono text mode.␊ |
267 | #if DEBUG␊ |
268 | printf("after video_mode\n");␊ |
269 | #endif␊ |
270 | ␊ |
271 | // Scan and record the system's hardware information.␊ |
272 | scan_platform();␊ |
273 | ␊ |
274 | // First get info for boot volume.␊ |
275 | scanBootVolumes(gBIOSDev, 0);␊ |
276 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
277 | setBootGlobals(bvChain);␊ |
278 | ␊ |
279 | // Load boot.plist config file␊ |
280 | status = loadSystemConfig(&bootInfo->bootConfig);␊ |
281 | ␊ |
282 | if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {␊ |
283 | gBootMode |= kBootModeQuiet;␊ |
284 | }␊ |
285 | ␊ |
286 | // Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
287 | if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {␊ |
288 | firstRun = false;␊ |
289 | }␊ |
290 | ␊ |
291 | ␉// Intialize module system␊ |
292 | ␉if (init_module_system())␊ |
293 | ␉{␊ |
294 | ␉␉load_all_modules();␊ |
295 | ␉}␊ |
296 | ␊ |
297 | ␉// Loading preboot ramdisk if exists.␊ |
298 | ␉loadPrebootRAMDisk();␊ |
299 | ␊ |
300 | // Disable rescan option by default␊ |
301 | gEnableCDROMRescan = false;␊ |
302 | ␊ |
303 | // Enable it with Rescan=y in system config␊ |
304 | if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {␊ |
305 | gEnableCDROMRescan = true;␊ |
306 | }␊ |
307 | ␊ |
308 | // Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
309 | rescanPrompt = false;␊ |
310 | if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {␊ |
311 | gEnableCDROMRescan = promptForRescanOption();␊ |
312 | }␊ |
313 | ␊ |
314 | // Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
315 | if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {␊ |
316 | gScanSingleDrive = true;␊ |
317 | }␊ |
318 | ␊ |
319 | // Create a list of partitions on device(s).␊ |
320 | if (gScanSingleDrive) {␊ |
321 | scanBootVolumes(gBIOSDev, &bvCount);␊ |
322 | } else {␊ |
323 | scanDisks(gBIOSDev, &bvCount);␊ |
324 | }␊ |
325 | ␊ |
326 | // Create a separated bvr chain using the specified filters.␊ |
327 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
328 | ␊ |
329 | gBootVolume = selectBootVolume(bvChain);␊ |
330 | ␊ |
331 | #if DEBUG␊ |
332 | printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
333 | printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
334 | getc();␊ |
335 | #endif␊ |
336 | ␊ |
337 | useGUI = true;␊ |
338 | // Override useGUI default␊ |
339 | getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);␊ |
340 | ␊ |
341 | ␉/*␊ |
342 | ␉ * AutoResolution␊ |
343 | ␉ */␊ |
344 | ␉// Before initGui, patch the video bios with the correct resolution␊ |
345 | ␉UInt32 params[4];␊ |
346 | ␉params[3] = 0;␊ |
347 | ␉␊ |
348 | ␉// default to "false" as it doesn't work for everyone atm.␊ |
349 | ␉// http://forum.voodooprojects.org/index.php/topic,1227.0.html␊ |
350 | ␉gAutoResolution = false;␊ |
351 | ␉␊ |
352 | ␉getBoolForKey(kAutoResolutionKey, &gAutoResolution, &bootInfo->bootConfig);␊ |
353 | ␉␊ |
354 | ␉//Open the VBios and store VBios or Tables␊ |
355 | ␉map = openVbios(CT_UNKWN);␊ |
356 | ␉␊ |
357 | ␉if (gAutoResolution == true)␊ |
358 | ␉{␊ |
359 | ␉␉//Get Resolution from Graphics Mode key or EDID␊ |
360 | ␉␉int count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);␊ |
361 | ␉␉if (count < 3)␊ |
362 | ␉␉␉getResolution(params);␊ |
363 | ␉␉else␊ |
364 | ␉␉{␊ |
365 | ␉␉␉if ( params[2] == 256 ) params[2] = 8;␊ |
366 | ␉␉␉if ( params[2] == 555 ) params[2] = 16;␊ |
367 | ␉␉␉if ( params[2] == 888 ) params[2] = 32;␊ |
368 | ␉␉}␊ |
369 | ␉␉␊ |
370 | #ifdef AUTORES_DEBUG␊ |
371 | ␉printf("Resolution: %dx%d\n",params[0], params[1]);␊ |
372 | #endif␉␊ |
373 | ␉␉␊ |
374 | ␉␉//perfom the actual VBIOS patching␊ |
375 | ␉␉if (params[0] != 0 && params[1] != 0)␊ |
376 | ␉␉␉patchVbios(map, params[0], params[1], params[2], 0, 0);␊ |
377 | ␉}␊ |
378 | ␊ |
379 | if (useGUI && initGUI())␊ |
380 | ␉{␊ |
381 | ␉␉// initGUI() returned with an error, disabling GUI.␊ |
382 | ␉␉useGUI = false;␊ |
383 | ␉}␊ |
384 | ␊ |
385 | setBootGlobals(bvChain);␊ |
386 | ␊ |
387 | // Parse args, load and start kernel.␊ |
388 | while (1) {␊ |
389 | const char *val;␊ |
390 | int len;␊ |
391 | int trycache;␊ |
392 | long flags, cachetime, kerneltime, exttime, sleeptime, time;␊ |
393 | int ret = -1;␊ |
394 | void *binary = (void *)kLoadAddr;␊ |
395 | bool tryresume;␊ |
396 | bool tryresumedefault;␊ |
397 | bool forceresume;␊ |
398 | ␊ |
399 | // additional variable for testing alternate kernel image locations on boot helper partitions.␊ |
400 | char bootFileSpec[512];␊ |
401 | ␉␉␊ |
402 | // Initialize globals.␊ |
403 | ␊ |
404 | sysConfigValid = false;␊ |
405 | gErrors = false;␊ |
406 | ␊ |
407 | status = getBootOptions(firstRun);␊ |
408 | firstRun = false;␊ |
409 | if (status == -1) continue;␊ |
410 | ␊ |
411 | ␉␉//Azi: i'm now almost sure that here is the right place to do this! - test (gBootVolume == NULL)␊ |
412 | ␉␉// Turn off any GUI elements, draw background and update VRAM.␊ |
413 | ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
414 | ␉␉{␊ |
415 | ␉␉␉gui.devicelist.draw = false;␊ |
416 | ␉␉␉gui.bootprompt.draw = false;␊ |
417 | ␉␉␉gui.menu.draw = false;␊ |
418 | ␉␉␉gui.infobox.draw = false;␊ |
419 | ␉␉␉gui.logo.draw = false;␊ |
420 | ␉␉␉drawBackground();␊ |
421 | ␉␉␉updateVRAM();␊ |
422 | ␉␉}␊ |
423 | ␉␉␊ |
424 | ␉␉//␊ |
425 | ␉␉//AutoResolution - Reapply the patch or cancel if Graphics Mode was incorrect␊ |
426 | ␉␉//␉␉␉␉ or EDID Info was insane␊ |
427 | ␉␉getBoolForKey(kAutoResolutionKey, &gAutoResolution, &bootInfo->bootConfig);␊ |
428 | ␉␉␊ |
429 | ␉␉//Restore the vbios for Cancelation␊ |
430 | ␉␉if ((gAutoResolution == false) && map)␊ |
431 | ␉␉{␊ |
432 | ␉␉␉restoreVbios(map);␊ |
433 | ␉␉␉closeVbios(map);␉␊ |
434 | ␉␉}␊ |
435 | ␉␉␊ |
436 | ␉␉if ((gAutoResolution == true) && map)␊ |
437 | ␉␉{␊ |
438 | ␉␉␉// If mode has been switched during boot menu␊ |
439 | ␉␉␉// use the new resolution␊ |
440 | ␉␉␉if (map->hasSwitched == true)␊ |
441 | ␉␉␉{␊ |
442 | ␉␉␉␉params[0] = map->currentX;␊ |
443 | ␉␉␉␉params[1] = map->currentY;␊ |
444 | ␉␉␉␉params[2] = 32;␊ |
445 | ␉␉␉}␊ |
446 | ␉␉␉else␊ |
447 | ␉␉␉{␊ |
448 | ␉␉␉␉//or get resolution from Graphics Mode or EDID␊ |
449 | ␉␉␉␉int count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);␊ |
450 | ␉␉␉␉if (count < 3)␊ |
451 | ␉␉␉␉␉getResolution(params);␊ |
452 | ␉␉␉␉else␊ |
453 | ␉␉␉␉{␊ |
454 | ␉␉␉␉␉if ( params[2] == 256 ) params[2] = 8;␊ |
455 | ␉␉␉␉␉if ( params[2] == 555 ) params[2] = 16;␊ |
456 | ␉␉␉␉␉if ( params[2] == 888 ) params[2] = 32;␊ |
457 | ␉␉␉␉}␊ |
458 | ␉␉␉}␊ |
459 | ␉␉␉␊ |
460 | ␉␉␉//Resolution has changed, reapply the patch␊ |
461 | ␉␉␉if ((params[0] != 0) && (params[1] != 0) && (params[0] != map->currentX) &&␊ |
462 | ␉␉␉␉(params[1] != map->currentY))␊ |
463 | ␉␉␉{␊ |
464 | ␉␉␉␉patchVbios(map, params[0], params[1], params[2], 0, 0);␊ |
465 | ␉␉␉}␊ |
466 | ␉␉␉closeVbios(map);␊ |
467 | ␉␉}␊ |
468 | ␉␉␊ |
469 | status = processBootOptions();␊ |
470 | ␉␉// Status == 1 means to chainboot␊ |
471 | ␉␉if ( status ==␉1 ) break;␊ |
472 | ␉␉// Status == -1 means that gBootVolume is NULL. Config file is not mandatory anymore! ␊ |
473 | ␉␉if ( status == -1 )␊ |
474 | ␉␉{␊ |
475 | ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
476 | ␉␉␉if (gBootVolume == NULL)␊ |
477 | ␉␉␉{␊ |
478 | ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
479 | ␉␉␉␉␊ |
480 | ␉␉␉␉if (gEnableCDROMRescan)␊ |
481 | ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
482 | ␉␉␉␉␊ |
483 | ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
484 | ␉␉␉␉setBootGlobals(bvChain);␊ |
485 | ␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊ |
486 | ␉␉␉}␊ |
487 | ␉␉␉continue;␊ |
488 | ␉␉}␊ |
489 | ␉␉␊ |
490 | // Other status (e.g. 0) means that we should proceed with boot.␊ |
491 | ␊ |
492 | ␉␉// If cpu doesn't handle 64 bit instructions,...␊ |
493 | ␉␉if (!platformCPUFeature(CPU_FEATURE_EM64T) ||␊ |
494 | ␉␉␉// ... user forced i386 kernel architecture on cpu with "em64t"...␊ |
495 | ␉␉␉getValueForKey(kArchI386Flag, &val, &len, &bootInfo->bootConfig) ||␊ |
496 | ␉␉␉// ... or forced Legacy Mode...␊ |
497 | ␉␉␉getValueForKey(kLegacyModeFlag, &val, &len, &bootInfo->bootConfig))␊ |
498 | ␉␉{␊ |
499 | ␉␉␉// ... use i386 kernel arch.␊ |
500 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
501 | ␉␉}␊ |
502 | ␉␉else␊ |
503 | ␉␉{␊ |
504 | ␉␉␉// Else use x86_64 kernel arch.␊ |
505 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
506 | ␉␉}␊ |
507 | ␉␉// Override i386/-legacy, if flagged on Boot.plist.␊ |
508 | ␉␉if (getValueForKey(kArchX86_64Flag, &val, &len, &bootInfo->bootConfig))␊ |
509 | ␉␉{␊ |
510 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
511 | ␉␉}␊ |
512 | ␉␉␊ |
513 | ␉␉if (!getBoolForKey (kWakeKey, &tryresume, &bootInfo->bootConfig)) {␊ |
514 | ␉␉␉tryresume = true;␊ |
515 | ␉␉␉tryresumedefault = true;␊ |
516 | ␉␉} else {␊ |
517 | ␉␉␉tryresumedefault = false;␊ |
518 | ␉␉}␊ |
519 | ␊ |
520 | ␉␉if (!getBoolForKey (kForceWakeKey, &forceresume, &bootInfo->bootConfig)) {␊ |
521 | ␉␉␉forceresume = false;␊ |
522 | ␉␉}␊ |
523 | ␉␉␊ |
524 | ␉␉if (forceresume) {␊ |
525 | ␉␉␉tryresume = true;␊ |
526 | ␉␉␉tryresumedefault = false;␊ |
527 | ␉␉}␊ |
528 | ␉␉␊ |
529 | ␉␉while (tryresume) {␊ |
530 | ␉␉␉const char *tmp;␊ |
531 | ␉␉␉BVRef bvr;␊ |
532 | ␉␉␉if (!getValueForKey(kWakeKeyImageKey, &val, &len, &bootInfo->bootConfig))␊ |
533 | ␉␉␉␉val="/private/var/vm/sleepimage";␊ |
534 | ␉␉␉␊ |
535 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
536 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
537 | ␊ |
538 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
539 | ␉␉␉␉break;␊ |
540 | ␉␉␉␊ |
541 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
542 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
543 | ␉␉␉␉break;␊ |
544 | ␉␉␉␊ |
545 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
546 | ␉␉␉␉break;␊ |
547 | ␉␉␉␊ |
548 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
549 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);␊ |
550 | ␉␉␉␉break;␊ |
551 | ␉␉␉}␊ |
552 | ␉␉␉␉␊ |
553 | ␉␉␉HibernateBoot((char *)val);␊ |
554 | ␉␉␉break;␊ |
555 | ␉␉}␊ |
556 | ␊ |
557 | // Reset cache name.␊ |
558 | bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
559 | ␊ |
560 | sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
561 | ␊ |
562 | adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
563 | ␊ |
564 | if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
565 | strlcpy(gBootKernelCacheFile, val, len+1);␊ |
566 | } else {␊ |
567 | sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);␊ |
568 | }␊ |
569 | ␊ |
570 | // Check for cache file.␊ |
571 | trycache = (((gBootMode & kBootModeSafe) == 0) &&␊ |
572 | !gOverrideKernel &&␊ |
573 | (gBootFileType == kBlockDeviceType) &&␊ |
574 | (gMKextName[0] == '\0') &&␊ |
575 | (gBootKernelCacheFile[0] != '\0'));␊ |
576 | ␊ |
577 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
578 | ␉␉␊ |
579 | if (trycache) do {␊ |
580 | ␊ |
581 | // if we haven't found the kernel yet, don't use the cache␊ |
582 | ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
583 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {␊ |
584 | trycache = 0;␊ |
585 | break;␊ |
586 | }␊ |
587 | ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);␊ |
588 | if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
589 | || (cachetime < kerneltime)) {␊ |
590 | trycache = 0;␊ |
591 | break;␊ |
592 | }␊ |
593 | ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
594 | if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
595 | && (cachetime < exttime)) {␊ |
596 | trycache = 0;␊ |
597 | break;␊ |
598 | }␊ |
599 | if (kerneltime > exttime) {␊ |
600 | exttime = kerneltime;␊ |
601 | }␊ |
602 | if (cachetime != (exttime + 1)) {␊ |
603 | trycache = 0;␊ |
604 | break;␊ |
605 | }␊ |
606 | } while (0);␊ |
607 | ␊ |
608 | do {␊ |
609 | if (trycache) {␊ |
610 | bootFile = gBootKernelCacheFile;␊ |
611 | verbose("Loading kernel cache %s\n", bootFile);␊ |
612 | ret = LoadFile(bootFile);␊ |
613 | binary = (void *)kLoadAddr;␊ |
614 | if (ret >= 0) {␊ |
615 | break;␊ |
616 | }␊ |
617 | }␊ |
618 | bootFile = bootInfo->bootFile;␊ |
619 | ␊ |
620 | // Try to load kernel image from alternate locations on boot helper partitions.␊ |
621 | sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);␊ |
622 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
623 | ␉ ␉ if (ret == -1)␊ |
624 | ␉ ␉ {␊ |
625 | sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);␊ |
626 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
627 | if (ret == -1)␊ |
628 | {␊ |
629 | sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);␊ |
630 | ret = GetFileInfo(NULL, bootFileSpec, &flags, &time); ␊ |
631 | if (ret == -1)␊ |
632 | {␊ |
633 | // Not found any alternate locations, using the original kernel image path.␊ |
634 | strcpy(bootFileSpec, bootFile);␊ |
635 | }␊ |
636 | }␊ |
637 | }␊ |
638 | ␉␉␉␊ |
639 | verbose("Loading kernel %s\n", bootFileSpec);␊ |
640 | ret = LoadThinFatFile(bootFileSpec, &binary);␊ |
641 | if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
642 | {␊ |
643 | archCpuType = CPU_TYPE_I386;␊ |
644 | ret = LoadThinFatFile(bootFileSpec, &binary);␉␉␉␉␊ |
645 | }␊ |
646 | ␉␉␉␊ |
647 | } while (0);␊ |
648 | ␊ |
649 | clearActivityIndicator();␊ |
650 | #if DEBUG␊ |
651 | printf("Pausing...");␊ |
652 | sleep(8);␊ |
653 | #endif␊ |
654 | ␊ |
655 | if (ret <= 0) {␊ |
656 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
657 | ␊ |
658 | ␉␉␉sleep(1);␊ |
659 | ␉␉␉␊ |
660 | if (gBootFileType == kNetworkDeviceType) {␊ |
661 | // Return control back to PXE. Don't unload PXE base code.␊ |
662 | gUnloadPXEOnExit = false;␊ |
663 | break;␊ |
664 | }␊ |
665 | } else {␊ |
666 | /* Won't return if successful. */␊ |
667 | ␉␉␉// Notify modules that ExecKernel is about to be called␊ |
668 | ␉␉␉execute_hook("ExecKernel", binary, NULL, NULL, NULL);␊ |
669 | ␉␉␉␊ |
670 | ret = ExecKernel(binary);␊ |
671 | }␊ |
672 | }␊ |
673 | ␊ |
674 | // chainboot␊ |
675 | if (status==1) {␊ |
676 | ␉if (getVideoMode() == GRAPHICS_MODE) {␉// if we are already in graphics-mode,␊ |
677 | ␉␉setVideoMode(VGA_TEXT_MODE, 0);␉// switch back to text mode␊ |
678 | ␉}␊ |
679 | }␊ |
680 | ␉␊ |
681 | if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
682 | ␉nbpUnloadBaseCode();␊ |
683 | }␊ |
684 | }␊ |
685 | ␊ |
686 | /*!␊ |
687 | Selects a new BIOS device, taking care to update the global state appropriately.␊ |
688 | */␊ |
689 | /*␊ |
690 | static void selectBiosDevice(void)␊ |
691 | {␊ |
692 | struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
693 | CacheReset();␊ |
694 | diskFreeMap(oldMap);␊ |
695 | oldMap = NULL;␊ |
696 | ␊ |
697 | int dev = selectAlternateBootDevice(gBIOSDev);␊ |
698 | ␊ |
699 | BVRef bvchain = scanBootVolumes(dev, 0);␊ |
700 | BVRef bootVol = selectBootVolume(bvchain);␊ |
701 | gBootVolume = bootVol;␊ |
702 | setRootVolume(bootVol);␊ |
703 | gBIOSDev = dev;␊ |
704 | }␊ |
705 | */␊ |
706 | ␊ |
707 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
708 | #define NMAX 5000␊ |
709 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
710 | ␊ |
711 | #define DO1(buf,i) {s1 += buf[i]; s2 += s1;}␊ |
712 | #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);␊ |
713 | #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);␊ |
714 | #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);␊ |
715 | #define DO16(buf) DO8(buf,0); DO8(buf,8);␊ |
716 | ␊ |
717 | unsigned long Adler32(unsigned char *buf, long len)␊ |
718 | {␊ |
719 | unsigned long s1 = 1; // adler & 0xffff;␊ |
720 | unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
721 | unsigned long result;␊ |
722 | int k;␊ |
723 | ␊ |
724 | while (len > 0) {␊ |
725 | k = len < NMAX ? len : NMAX;␊ |
726 | len -= k;␊ |
727 | while (k >= 16) {␊ |
728 | DO16(buf);␊ |
729 | buf += 16;␊ |
730 | k -= 16;␊ |
731 | }␊ |
732 | if (k != 0) do {␊ |
733 | s1 += *buf++;␊ |
734 | s2 += s1;␊ |
735 | } while (--k);␊ |
736 | s1 %= BASE;␊ |
737 | s2 %= BASE;␊ |
738 | }␊ |
739 | result = (s2 << 16) | s1;␊ |
740 | return OSSwapHostToBigInt32(result);␊ |
741 | }␊ |
742 | |