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 | /* ␊ |
26 | * Mach Operating System␊ |
27 | * Copyright (c) 1990 Carnegie-Mellon University␊ |
28 | * Copyright (c) 1989 Carnegie-Mellon University␊ |
29 | * All rights reserved.␉ The CMU software License Agreement specifies␊ |
30 | * the terms and conditions for use and redistribution.␊ |
31 | *␊ |
32 | * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
33 | *␊ |
34 | * This software is supplied under the terms of a license agreement or ␊ |
35 | * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
36 | * nor disclosed except in accordance with the terms of that agreement.␊ |
37 | *␊ |
38 | *␉Copyright 1988, 1989 by Intel Corporation␊ |
39 | *␊ |
40 | *␊ |
41 | * Copyright 1993 NeXT Computer, Inc.␊ |
42 | * All rights reserved.␊ |
43 | *␊ |
44 | * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊ |
45 | * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
46 | */␊ |
47 | ␊ |
48 | #include "boot.h"␊ |
49 | #include "bootstruct.h"␊ |
50 | #include "fake_efi.h"␊ |
51 | #include "sl.h"␊ |
52 | #include "libsa.h"␊ |
53 | #include "ramdisk.h"␊ |
54 | #include "gui.h"␊ |
55 | #include "platform.h"␊ |
56 | #include "modules.h"␊ |
57 | #include "device_tree.h"␊ |
58 | ␊ |
59 | #ifndef DEBUG_BOOT2␊ |
60 | #define DEBUG_BOOT2 0␊ |
61 | #endif␊ |
62 | ␊ |
63 | #if DEBUG_BOOT2␊ |
64 | #define DBG(x...)␉printf(x)␊ |
65 | #else␊ |
66 | #define DBG(x...)␉msglog(x)␊ |
67 | #endif␊ |
68 | ␊ |
69 | /*␊ |
70 | * How long to wait (in seconds) to load the␊ |
71 | * kernel after displaying the "boot:" prompt.␊ |
72 | */␊ |
73 | #define kBootErrorTimeout 5␊ |
74 | ␊ |
75 | bool␉␉gOverrideKernel;␊ |
76 | bool␉␉gEnableCDROMRescan;␊ |
77 | bool␉␉gScanSingleDrive;␊ |
78 | bool␉␉useGUI;␊ |
79 | ␊ |
80 | static int interruptsAvailable = 0;␊ |
81 | ␊ |
82 | static bool␉gUnloadPXEOnExit = false;␊ |
83 | ␊ |
84 | static char␉gCacheNameAdler[64 + 256];␊ |
85 | char␉␉*gPlatformName = gCacheNameAdler;␊ |
86 | ␊ |
87 | char␉␉gRootDevice[ROOT_DEVICE_SIZE];␊ |
88 | char␉␉gMKextName[512];␊ |
89 | int␉␉bvCount = 0;␊ |
90 | int␉␉gDeviceCount = 0;␊ |
91 | //int␉␉menucount = 0;␊ |
92 | long␉␉gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
93 | ␊ |
94 | BVRef␉␉bvr;␊ |
95 | BVRef␉␉menuBVR;␊ |
96 | BVRef␉␉bvChain;␊ |
97 | ␊ |
98 | static unsigned long␉Adler32(unsigned char *buffer, long length);␊ |
99 | //static void␉␉␉selectBiosDevice(void);␊ |
100 | ␊ |
101 | /** options.c **/␊ |
102 | extern char* msgbuf;␊ |
103 | void showTextBuffer(char *buf, int size);␊ |
104 | ␊ |
105 | //==========================================================================␊ |
106 | // Zero the BSS.␊ |
107 | ␊ |
108 | static void zeroBSS(void)␊ |
109 | {␊ |
110 | ␉extern char bss_start __asm("section$start$__DATA$__bss");␊ |
111 | ␉extern char bss_end __asm("section$end$__DATA$__bss");␊ |
112 | ␉extern char common_start __asm("section$start$__DATA$__common");␊ |
113 | ␉extern char common_end __asm("section$end$__DATA$__common");␊ |
114 | ␊ |
115 | ␉bzero(&bss_start, (&bss_end - &bss_start));␊ |
116 | ␉bzero(&common_start, (&common_end - &common_start));␊ |
117 | }␊ |
118 | ␊ |
119 | //==========================================================================␊ |
120 | // Malloc error function␊ |
121 | ␊ |
122 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
123 | {␊ |
124 | ␉stop("\nMemory allocation error! Addr: 0x%x, Size: 0x%x, File: %s, Line: %d\n",␊ |
125 | ␉␉␉␉␉␉␉␉␉ (unsigned)addr, (unsigned)size, file, line);␊ |
126 | }␊ |
127 | ␊ |
128 | //==========================================================================␊ |
129 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
130 | //␊ |
131 | void initialize_runtime(void)␊ |
132 | {␊ |
133 | ␉zeroBSS();␊ |
134 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
135 | }␊ |
136 | ␊ |
137 | //==========================================================================␊ |
138 | // ExecKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
139 | ␊ |
140 | static int ExecKernel(void *binary)␊ |
141 | {␊ |
142 | ␉int␉␉␉ret;␊ |
143 | ␉entry_t␉␉kernelEntry;␊ |
144 | ␊ |
145 | ␉bootArgs->kaddr = bootArgs->ksize = 0;␊ |
146 | ␉execute_hook("ExecKernel", (void *)binary, NULL, NULL, NULL);␊ |
147 | ␊ |
148 | ␉ret = DecodeKernel(binary,␊ |
149 | ␉␉␉␉␉ &kernelEntry,␊ |
150 | ␉␉␉␉␉ (char **) &bootArgs->kaddr,␊ |
151 | ␉␉␉␉␉ (int *)&bootArgs->ksize);␊ |
152 | ␊ |
153 | ␉if ( ret != 0 )␊ |
154 | ␉{␊ |
155 | ␉␉return ret;␊ |
156 | ␉}␊ |
157 | ␊ |
158 | ␉// Reserve space for boot args␊ |
159 | ␉reserveKernBootStruct();␊ |
160 | ␊ |
161 | ␉// Notify modules that the kernel has been decoded␊ |
162 | ␉execute_hook("DecodedKernel", (void *)binary, (void *)bootArgs->kaddr, (void *)bootArgs->ksize, NULL);␊ |
163 | ␊ |
164 | ␉setupFakeEfi();␊ |
165 | ␊ |
166 | ␉// Load boot drivers from the specifed root path.␊ |
167 | ␉//if (!gHaveKernelCache)␊ |
168 | ␉{␊ |
169 | ␉␉LoadDrivers("/");␊ |
170 | ␉}␊ |
171 | ␊ |
172 | ␉execute_hook("DriversLoaded", (void *)binary, NULL, NULL, NULL);␊ |
173 | ␊ |
174 | ␉clearActivityIndicator();␊ |
175 | ␊ |
176 | ␉if (gErrors)␊ |
177 | ␉{␊ |
178 | ␉␉printf("Errors encountered while starting up the computer.\n");␊ |
179 | ␉␉printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
180 | ␉␉sleep(kBootErrorTimeout);␊ |
181 | ␉}␊ |
182 | ␊ |
183 | ␉md0Ramdisk();␊ |
184 | ␊ |
185 | ␉// Cleanup the PXE base code.␊ |
186 | ␊ |
187 | ␉if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit )␊ |
188 | ␉{␊ |
189 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
190 | ␉␉{␊ |
191 | ␉␉␉printf("nbpUnloadBaseCode error %d\n", (int)ret);␊ |
192 | ␉␉␉sleep(2);␊ |
193 | ␉␉}␊ |
194 | ␉}␊ |
195 | ␊ |
196 | ␉bool dummyVal;␊ |
197 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->chameleonConfig) && dummyVal)␊ |
198 | ␉{␊ |
199 | ␉␉showTextBuffer(msgbuf, strlen(msgbuf));␊ |
200 | ␉}␊ |
201 | ␊ |
202 | ␉usb_loop();␊ |
203 | ␊ |
204 | #if DEBUG␊ |
205 | ␉if (interruptsAvailable) ShowInterruptCounters();␊ |
206 | #endif␊ |
207 | ␊ |
208 | ␉// If we were in text mode, switch to graphics mode.␊ |
209 | ␉// This will draw the boot graphics unless we are in␊ |
210 | ␉// verbose mode.␊ |
211 | ␉if (gVerboseMode)␊ |
212 | ␉{␊ |
213 | ␉␉setVideoMode(GRAPHICS_MODE, 0);␊ |
214 | ␉}␊ |
215 | ␉else␊ |
216 | ␉{␊ |
217 | ␉␉drawBootGraphics();␊ |
218 | ␉}␊ |
219 | ␊ |
220 | ␉DBG("Starting Darwin/%s [%s]\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64", gDarwinBuildVerStr);␊ |
221 | ␉DBG("Boot Args: %s\n", bootArgs->CommandLine);␊ |
222 | ␊ |
223 | ␉setupBooterLog();␊ |
224 | ␊ |
225 | ␉finalizeBootStruct();␊ |
226 | ␊ |
227 | ␉// Jump to kernel's entry point. There's no going back now.␊ |
228 | ␉if (MacOSVerCurrent >= MacOSVer2Int("10.7"))␊ |
229 | ␉{␊ |
230 | ␉␉// Notify modules that the kernel is about to be started␊ |
231 | ␉␉execute_hook("Kernel Start", (void *)kernelEntry, (void *)bootArgs, NULL, NULL);␊ |
232 | ␊ |
233 | ␉␉if (interruptsAvailable) DisableInterrupts();␊ |
234 | ␊ |
235 | ␉␉// Masking out so that Lion doesn't doublefault␊ |
236 | ␉␉outb(0x21, 0xff);␉/* Maskout all interrupts Pic1 */␊ |
237 | ␉␉outb(0xa1, 0xff);␉/* Maskout all interrupts Pic2 */␊ |
238 | ␊ |
239 | ␉␉startprog( kernelEntry, bootArgs );␊ |
240 | ␉}␊ |
241 | ␉else␊ |
242 | ␉{␊ |
243 | ␉␉// Notify modules that the kernel is about to be started␊ |
244 | ␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␊ |
245 | ␊ |
246 | ␉␉if (interruptsAvailable) DisableInterrupts();␊ |
247 | ␊ |
248 | ␉␉startprog( kernelEntry, bootArgsPreLion );␊ |
249 | ␉}␊ |
250 | ␊ |
251 | ␉// Not reached␊ |
252 | ␉__builtin_unreachable();␊ |
253 | }␊ |
254 | ␊ |
255 | ␊ |
256 | //==========================================================================␊ |
257 | // LoadKernelCache - Try to load Kernel Cache.␊ |
258 | // return the length of the loaded cache file or -1 on error␊ |
259 | long LoadKernelCache(const char* cacheFile, void **binary)␊ |
260 | {␊ |
261 | ␉char␉␉kernelCacheFile[512];␊ |
262 | ␉char␉␉kernelCachePath[512];␊ |
263 | ␉long␉␉flags, ret=-1;␊ |
264 | ␉unsigned long adler32;␊ |
265 | ␉u_int32_t time, cachetime, kerneltime, exttime;␊ |
266 | ␊ |
267 | ␉if((gBootMode & kBootModeSafe) != 0)␊ |
268 | ␉{␊ |
269 | ␉␉DBG("Kernel Cache ignored.\n");␊ |
270 | ␉␉return -1;␊ |
271 | ␉}␊ |
272 | ␊ |
273 | ␉// Use specify kernel cache file if not empty␊ |
274 | ␉if (cacheFile[0] != 0)␊ |
275 | ␉{␊ |
276 | ␉␉strlcpy(kernelCacheFile, cacheFile, sizeof(kernelCacheFile));␊ |
277 | ␉␉verbose("Specified kernel cache file path: %s\n", cacheFile);␊ |
278 | ␉}␊ |
279 | ␉else␊ |
280 | ␉{␊ |
281 | ␉␉// Lion, Mountain Lion, Mavericks and Yosemite prelink kernel cache file␊ |
282 | ␉␉if (MacOSVerCurrent >= MacOSVer2Int("10.7")) // OSX is Lion (10.7) or newer␊ |
283 | ␉␉{␊ |
284 | ␉␉␉snprintf(kernelCacheFile, sizeof(kernelCacheFile), "%skernelcache", kDefaultCachePathSnow);␊ |
285 | ␉␉␉verbose("Kernel Cache file path (Mac OS X 10.7 and newer): %s\n", kernelCacheFile);␊ |
286 | ␉␉}␊ |
287 | ␉␉// Snow Leopard prelink kernel cache file␊ |
288 | ␉␉else␊ |
289 | ␉␉{␊ |
290 | ␉␉␉if (MacOSVerCurrent >= MacOSVer2Int("10.6")) // OSX is Snow (10.6)␊ |
291 | ␉␉␉{␊ |
292 | ␉␉␉␉snprintf(kernelCacheFile, sizeof(kernelCacheFile), "kernelcache_%s",␊ |
293 | ␉␉␉␉␉(archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64");␊ |
294 | ␊ |
295 | ␉␉␉␉int␉lnam = strlen(kernelCacheFile) + 9; //with adler32␊ |
296 | ␉␉␉␉char␉*name;␊ |
297 | ␉␉␉␉u_int32_t prev_time = 0;␊ |
298 | ␊ |
299 | ␉␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊ |
300 | ␊ |
301 | ␉␉␉␉/* TODO: handle error? */␊ |
302 | ␉␉␉␉if (cacheDir)␊ |
303 | ␉␉␉␉{␊ |
304 | ␉␉␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊ |
305 | ␉␉␉␉␉{␊ |
306 | ␉␉␉␉␉␉if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time␊ |
307 | ␉␉␉␉␉␉␉&& strstr(name, kernelCacheFile) && (name[lnam] != '.'))␊ |
308 | ␉␉␉␉␉␉{␊ |
309 | ␉␉␉␉␉␉␉snprintf(kernelCacheFile, sizeof(kernelCacheFile), "%s%s", kDefaultCachePathSnow, name);␊ |
310 | ␉␉␉␉␉␉␉prev_time = time;␊ |
311 | ␉␉␉␉␉␉}␊ |
312 | ␉␉␉␉␉}␊ |
313 | ␉␉␉␉␉verbose("Kernel Cache file path (Mac OS X 10.6.X): %s\n", kernelCacheFile);␊ |
314 | ␉␉␉␉}␊ |
315 | ␉␉␉␉closedir(cacheDir);␊ |
316 | ␉␉␉}␊ |
317 | ␉␉␉else␊ |
318 | ␉␉␉{␊ |
319 | ␉␉␉␉// Leopard prelink kernel cache file␊ |
320 | ␉␉␉␉// Reset cache name.␊ |
321 | ␉␉␉␉bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
322 | ␉␉␉␉snprintf(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
323 | ␉␉␉␉adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
324 | ␉␉␉␉snprintf(kernelCacheFile, sizeof(kernelCacheFile), "%s.%08lX", kDefaultCachePathLeo, adler32);␊ |
325 | ␉␉␉␉verbose("Reseted kernel cache file path: %s\n", kernelCacheFile);␊ |
326 | ␉␉␉}␊ |
327 | ␉␉}␊ |
328 | ␉}␊ |
329 | ␊ |
330 | ␉// Check if the kernel cache file exists␊ |
331 | ␉ret = -1;␊ |
332 | ␊ |
333 | ␉// If boot from a boot helper partition check the kernel cache file on it␊ |
334 | ␉if (gBootVolume->flags & kBVFlagBooter)␊ |
335 | ␉{␊ |
336 | ␉␉snprintf(kernelCachePath, sizeof(kernelCachePath), "/com.apple.boot.P/%s", kernelCacheFile);␊ |
337 | ␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
338 | ␊ |
339 | ␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
340 | ␉␉{␊ |
341 | ␉␉␉snprintf(kernelCachePath, sizeof(kernelCachePath), "/com.apple.boot.R/%s", kernelCacheFile);␊ |
342 | ␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
343 | ␊ |
344 | ␉␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
345 | ␉␉␉{␊ |
346 | ␉␉␉␉snprintf(kernelCachePath, sizeof(kernelCachePath), "/com.apple.boot.S/%s", kernelCacheFile);␊ |
347 | ␉␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
348 | ␊ |
349 | ␉␉␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
350 | ␉␉␉␉{␊ |
351 | ␉␉␉␉␉snprintf(kernelCachePath, sizeof(kernelCachePath), "/com.apple.recovery.boot/kernelcache", kernelCacheFile);␊ |
352 | ␉␉␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
353 | ␊ |
354 | ␉␉␉␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
355 | ␉␉␉␉␉{␊ |
356 | ␉␉␉␉␉␉ret = -1;␊ |
357 | ␉␉␉␉␉}␊ |
358 | ␉␉␉␉}␊ |
359 | ␉␉␉}␊ |
360 | ␉␉}␊ |
361 | ␉}␊ |
362 | ␊ |
363 | ␉// If not found, use the original kernel cache path.␊ |
364 | ␉if (ret == -1)␊ |
365 | ␉{␊ |
366 | ␉␉strlcpy(kernelCachePath, kernelCacheFile, sizeof(kernelCachePath));␊ |
367 | ␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
368 | ␊ |
369 | ␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
370 | ␉␉{␊ |
371 | ␉␉␉ret = -1;␊ |
372 | ␉␉}␊ |
373 | ␉}␊ |
374 | ␊ |
375 | ␉// Exit if kernel cache file wasn't found␊ |
376 | ␉if (ret == -1)␊ |
377 | ␉{␊ |
378 | ␉␉DBG("No Kernel Cache File '%s' found\n", kernelCacheFile);␊ |
379 | ␉␉return -1;␊ |
380 | ␉}␊ |
381 | ␊ |
382 | ␉// Check if the kernel cache file is more recent (mtime)␊ |
383 | ␉// than the kernel file or the S/L/E directory␊ |
384 | ␉ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
385 | ␊ |
386 | ␉// Check if the kernel file is more recent than the cache file␊ |
387 | ␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeFlat) && (kerneltime > cachetime))␊ |
388 | ␉{␊ |
389 | ␉␉DBG("Kernel file '%s' is more recent than Kernel Cache '%s'! Ignoring Kernel Cache.\n", bootInfo->bootFile, kernelCacheFile);␊ |
390 | ␉␉return -1;␊ |
391 | ␉}␊ |
392 | ␊ |
393 | ␉ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
394 | ␊ |
395 | ␉// Check if the S/L/E directory time is more recent than the cache file␊ |
396 | ␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory) && (exttime > cachetime))␊ |
397 | ␉{␊ |
398 | ␉␉DBG("Folder '/System/Library/Extensions' is more recent than Kernel Cache file '%s'! Ignoring Kernel Cache.\n", kernelCacheFile);␊ |
399 | ␉␉return -1;␊ |
400 | ␉}␊ |
401 | ␊ |
402 | ␉// Since the kernel cache file exists and is the most recent try to load it␊ |
403 | ␉DBG("Loading Kernel Cache from: '%s%s' (%s)\n", gBootVolume->label, gBootVolume->altlabel, gBootVolume->type_name);␊ |
404 | ␊ |
405 | ␉ret = LoadThinFatFile(kernelCachePath, binary);␊ |
406 | ␉return ret; // ret contain the length of the binary␊ |
407 | }␊ |
408 | ␊ |
409 | //==========================================================================␊ |
410 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
411 | // before. Multiboot does its own runtime initialization, does some of its␊ |
412 | // own things, and then calls common_boot.␊ |
413 | void boot(int biosdev)␊ |
414 | {␊ |
415 | ␉initialize_runtime();␊ |
416 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
417 | ␉enableA20();␊ |
418 | ␉common_boot(biosdev);␊ |
419 | }␊ |
420 | ␊ |
421 | //==========================================================================␊ |
422 | // The 'main' function for the booter. Called by boot0 when booting␊ |
423 | // from a block device, or by the network booter.␊ |
424 | //␊ |
425 | // arguments:␊ |
426 | //␉ biosdev - Value passed from boot1/NBP to specify the device␊ |
427 | //␉␉␉ that the booter was loaded from.␊ |
428 | //␊ |
429 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
430 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
431 | // next boot device on its list.␊ |
432 | void common_boot(int biosdev)␊ |
433 | {␊ |
434 | ␉bool␉ ␉␉quiet;␊ |
435 | ␉bool␉ ␉␉firstRun = true;␊ |
436 | ␉bool␉ ␉␉instantMenu;␊ |
437 | ␉bool␉ ␉␉rescanPrompt;␊ |
438 | ␉int␉␉␉␉status;␊ |
439 | ␉unsigned int␉allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊ |
440 | ␉unsigned int␉denyBVFlags = kBVFlagEFISystem;␊ |
441 | ␊ |
442 | ␉// Set reminder to unload the PXE base code. Neglect to unload␊ |
443 | ␉// the base code will result in a hang or kernel panic.␊ |
444 | ␉gUnloadPXEOnExit = true;␊ |
445 | ␊ |
446 | ␉// Record the device that the booter was loaded from.␊ |
447 | ␉gBIOSDev = biosdev & kBIOSDevMask;␊ |
448 | ␊ |
449 | ␉// Initialize boot-log␊ |
450 | ␉initBooterLog();␊ |
451 | ␊ |
452 | ␉// Enable interrupts␊ |
453 | ␉interruptsAvailable = SetupInterrupts();␊ |
454 | ␉if (interruptsAvailable) EnableInterrupts();␊ |
455 | ␊ |
456 | ␉// Initialize boot info structure.␊ |
457 | ␉initKernBootStruct();␊ |
458 | ␊ |
459 | ␉// Setup VGA text mode.␊ |
460 | ␉// Not sure if it is safe to call setVideoMode() before the␊ |
461 | ␉// config table has been loaded. Call video_mode() instead.␊ |
462 | #if DEBUG␊ |
463 | ␉printf("before video_mode\n");␊ |
464 | #endif␊ |
465 | ␉video_mode( 2 ); // 80x25 mono text mode.␊ |
466 | #if DEBUG␊ |
467 | ␉printf("after video_mode\n");␊ |
468 | #endif␊ |
469 | ␊ |
470 | ␉// Scan and record the system's hardware information.␊ |
471 | ␉scan_platform();␊ |
472 | ␊ |
473 | ␉// First get info for boot volume.␊ |
474 | ␉scanBootVolumes(gBIOSDev, 0);␊ |
475 | ␉bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
476 | ␉setBootGlobals(bvChain);␊ |
477 | ␊ |
478 | ␉// Load boot.plist config file␊ |
479 | ␉status = loadChameleonConfig(&bootInfo->chameleonConfig, bvChain);␊ |
480 | ␊ |
481 | ␉if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet)␊ |
482 | ␉{␊ |
483 | ␉␉gBootMode |= kBootModeQuiet;␊ |
484 | ␉}␊ |
485 | ␊ |
486 | ␉// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
487 | ␉if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu)␊ |
488 | ␉{␊ |
489 | ␉␉firstRun = false;␊ |
490 | ␉}␊ |
491 | ␊ |
492 | ␉// Loading preboot ramdisk if exists.␊ |
493 | ␉loadPrebootRAMDisk();␊ |
494 | ␊ |
495 | ␉// Disable rescan option by default␊ |
496 | ␉gEnableCDROMRescan = false;␊ |
497 | ␊ |
498 | ␉// Enable it with Rescan=y in system config␊ |
499 | ␉if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig)␉&& gEnableCDROMRescan)␊ |
500 | ␉{␊ |
501 | ␉␉gEnableCDROMRescan = true;␊ |
502 | ␉}␊ |
503 | ␊ |
504 | ␉// Disable rescanPrompt option by default␊ |
505 | ␉rescanPrompt = false;␊ |
506 | ␊ |
507 | ␉// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
508 | ␉if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev))␊ |
509 | ␉{␊ |
510 | ␉␉gEnableCDROMRescan = promptForRescanOption();␊ |
511 | ␉}␊ |
512 | ␊ |
513 | ␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
514 | ␉if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig) && gScanSingleDrive)␊ |
515 | ␉{␊ |
516 | ␉␉gScanSingleDrive = true;␊ |
517 | ␉}␊ |
518 | ␊ |
519 | ␉// Create a list of partitions on device(s).␊ |
520 | ␉if (gScanSingleDrive)␊ |
521 | ␉{␊ |
522 | ␉␉scanBootVolumes(gBIOSDev, &bvCount);␊ |
523 | ␉}␊ |
524 | ␉else␊ |
525 | ␉{␊ |
526 | ␉␉scanDisks(gBIOSDev, &bvCount);␊ |
527 | ␉}␊ |
528 | ␊ |
529 | ␉// Create a separated bvr chain using the specified filters.␊ |
530 | ␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
531 | ␊ |
532 | ␉gBootVolume = selectBootVolume(bvChain);␊ |
533 | ␊ |
534 | ␉// Intialize module system␊ |
535 | ␉init_module_system();␊ |
536 | ␊ |
537 | #if DEBUG␊ |
538 | ␉printf("Default: %d, ->biosdev: %d, ->part_no: %d ->flags: 0x%08X\n",␊ |
539 | ␉␉gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
540 | ␉printf("bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: 0x%08X\n",␊ |
541 | ␉␉gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
542 | ␉getchar();␊ |
543 | #endif␊ |
544 | ␊ |
545 | ␉useGUI = true;␊ |
546 | ␉// Override useGUI default␊ |
547 | ␉getBoolForKey(kGUIKey, &useGUI, &bootInfo->chameleonConfig);␊ |
548 | ␉if (useGUI && initGUI())␊ |
549 | ␉{␊ |
550 | ␉␉// initGUI() returned with an error, disabling GUI.␊ |
551 | ␉␉useGUI = false;␊ |
552 | ␉}␊ |
553 | ␊ |
554 | ␉setBootGlobals(bvChain);␊ |
555 | ␊ |
556 | ␉// Parse args, load and start kernel.␊ |
557 | ␉while (1)␊ |
558 | ␉{␊ |
559 | ␉␉bool␉␉tryresume, tryresumedefault, forceresume;␊ |
560 | ␉␉bool␉␉useKernelCache = true; // by default try to use the prelinked kernel␊ |
561 | ␉␉const char␉*val;␊ |
562 | ␉␉int␉␉␉len, ret = -1;␊ |
563 | ␉␉long␉␉flags;␊ |
564 | ␉␉u_int32_t␉sleeptime, time;␊ |
565 | ␉␉void␉␉*binary = (void *)kLoadAddr;␊ |
566 | ␊ |
567 | ␉␉char␉␉bootFile[sizeof(bootInfo->bootFile)];␊ |
568 | ␉␉char␉␉bootFilePath[512];␊ |
569 | ␉␉char␉␉kernelCacheFile[512];␊ |
570 | ␊ |
571 | ␉␉// Initialize globals.␊ |
572 | ␉␉sysConfigValid = false;␊ |
573 | ␉␉gErrors␉␉ = false;␊ |
574 | ␊ |
575 | ␉␉status = getBootOptions(firstRun);␊ |
576 | ␉␉firstRun = false;␊ |
577 | ␉␉if (status == -1) continue;␊ |
578 | ␊ |
579 | ␉␉status = processBootOptions();␊ |
580 | ␉␉// Status == 1 means to chainboot␊ |
581 | ␉␉if ( status ==␉1 ) break;␊ |
582 | ␉␉// Status == -1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
583 | ␉␉if ( status == -1 )␊ |
584 | ␉␉{␊ |
585 | ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
586 | ␉␉␉if (gBootVolume == NULL)␊ |
587 | ␉␉␉{␊ |
588 | ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
589 | ␊ |
590 | ␉␉␉␉if (gEnableCDROMRescan)␊ |
591 | ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
592 | ␊ |
593 | ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
594 | ␉␉␉␉setBootGlobals(bvChain);␊ |
595 | ␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊ |
596 | ␉␉␉}␊ |
597 | ␉␉␉continue;␊ |
598 | ␉␉}␊ |
599 | ␊ |
600 | ␉␉// Other status (e.g. 0) means that we should proceed with boot.␊ |
601 | ␊ |
602 | ␉␉// Turn off any GUI elements␊ |
603 | ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
604 | ␉␉{␊ |
605 | ␉␉␉gui.devicelist.draw = false;␊ |
606 | ␉␉␉gui.bootprompt.draw = false;␊ |
607 | ␉␉␉gui.menu.draw = false;␊ |
608 | ␉␉␉gui.infobox.draw = false;␊ |
609 | ␉␉␉gui.logo.draw = false;␊ |
610 | ␉␉␉drawBackground();␊ |
611 | ␉␉␉updateVRAM();␊ |
612 | ␉␉}␊ |
613 | ␊ |
614 | ␉␉if (platformCPUFeature(CPU_FEATURE_EM64T))␊ |
615 | ␉␉{␊ |
616 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
617 | ␉␉}␊ |
618 | ␉␉else␊ |
619 | ␉␉{␊ |
620 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
621 | ␉␉}␊ |
622 | ␊ |
623 | ␉␉if (getValueForKey(karch, &val, &len, &bootInfo->chameleonConfig))␊ |
624 | ␉␉{␊ |
625 | ␉␉␉if (strncmp(val, "i386", 4) == 0)␊ |
626 | ␉␉␉{␊ |
627 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
628 | ␉␉␉}␊ |
629 | ␉␉}␊ |
630 | ␊ |
631 | ␉␉if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊ |
632 | ␉␉␉if (strncmp(val, "i386", 4) == 0)␊ |
633 | ␉␉␉{␊ |
634 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
635 | ␉␉␉}␊ |
636 | ␉␉}␊ |
637 | ␊ |
638 | ␉␉// Notify modules that we are attempting to boot␊ |
639 | ␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊ |
640 | ␊ |
641 | ␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->chameleonConfig))␊ |
642 | ␉␉{␊ |
643 | ␉␉␉tryresume = true;␊ |
644 | ␉␉␉tryresumedefault = true;␊ |
645 | ␉␉}␊ |
646 | ␉␉else␊ |
647 | ␉␉{␊ |
648 | ␉␉␉tryresumedefault = false;␊ |
649 | ␉␉}␊ |
650 | ␊ |
651 | ␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->chameleonConfig)) {␊ |
652 | ␉␉␉forceresume = false;␊ |
653 | ␉␉}␊ |
654 | ␊ |
655 | ␉␉if (forceresume)␊ |
656 | ␉␉{␊ |
657 | ␉␉␉tryresume = true;␊ |
658 | ␉␉␉tryresumedefault = false;␊ |
659 | ␉␉}␊ |
660 | ␊ |
661 | ␉␉while (tryresume)␊ |
662 | ␉␉{␊ |
663 | ␉␉␉const char *tmp;␊ |
664 | ␉␉␉BVRef bvr;␊ |
665 | ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))␊ |
666 | ␉␉␉␉val = "/private/var/vm/sleepimage";␊ |
667 | ␊ |
668 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
669 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
670 | ␊ |
671 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
672 | ␉␉␉␉break;␊ |
673 | ␊ |
674 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
675 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
676 | ␉␉␉␉break;␊ |
677 | ␊ |
678 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
679 | ␉␉␉␉break;␊ |
680 | ␊ |
681 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime))␊ |
682 | ␉␉␉{␊ |
683 | #if DEBUG␊ |
684 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",␊ |
685 | ␉␉␉␉␉␉bvr->modTime-sleeptime);␊ |
686 | #endif␊ |
687 | ␉␉␉␉break;␊ |
688 | ␉␉␉}␊ |
689 | ␊ |
690 | ␉␉␉HibernateBoot((char *)val);␊ |
691 | ␉␉␉break;␊ |
692 | ␉␉}␊ |
693 | ␊ |
694 | ␉␉getBoolForKey(kUseKernelCache, &useKernelCache, &bootInfo->chameleonConfig);␊ |
695 | ␉␉if (useKernelCache)␊ |
696 | ␉␉{␊ |
697 | ␉␉␉do␊ |
698 | ␉␉␉{␊ |
699 | ␉␉␉␉// Determine the name of the Kernel Cache␊ |
700 | ␉␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig))␊ |
701 | ␉␉␉␉{␊ |
702 | ␉␉␉␉␉if (val[0] == '\\')␊ |
703 | ␉␉␉␉␉{␊ |
704 | ␉␉␉␉␉␉len--;␊ |
705 | ␉␉␉␉␉␉val++;␊ |
706 | ␉␉␉␉␉}␊ |
707 | ␉␉␉␉␉/* FIXME: check len vs sizeof(kernelCacheFile) */␊ |
708 | ␉␉␉␉␉strlcpy(kernelCacheFile, val, len + 1);␊ |
709 | ␉␉␉␉}␊ |
710 | ␉␉␉␉else␊ |
711 | ␉␉␉␉{␊ |
712 | ␉␉␉␉␉kernelCacheFile[0] = 0; // Use default kernel cache file␊ |
713 | ␉␉␉␉}␊ |
714 | ␊ |
715 | ␉␉␉␉if (gOverrideKernel && kernelCacheFile[0] == 0)␊ |
716 | ␉␉␉␉{␊ |
717 | ␉␉␉␉␉DBG("Using a non default kernel (%s) without specifying 'Kernel Cache' path, KernelCache will not be used\n", bootInfo->bootFile);␊ |
718 | ␉␉␉␉␉useKernelCache = false;␊ |
719 | ␉␉␉␉␉break;␊ |
720 | ␉␉␉␉}␊ |
721 | ␊ |
722 | ␉␉␉␉if (gMKextName[0] != 0)␊ |
723 | ␉␉␉␉{␊ |
724 | ␉␉␉␉␉DBG("Using a specific MKext Cache (%s), KernelCache will not be used\n", gMKextName);␊ |
725 | ␉␉␉␉␉useKernelCache = false;␊ |
726 | ␉␉␉␉␉break;␊ |
727 | ␉␉␉␉}␊ |
728 | ␊ |
729 | ␉␉␉␉if (gBootFileType != kBlockDeviceType)␊ |
730 | ␉␉␉␉{␊ |
731 | ␉␉␉␉␉useKernelCache = false;␊ |
732 | ␉␉␉␉}␊ |
733 | ␊ |
734 | ␉␉␉} while(0);␊ |
735 | ␉␉}␊ |
736 | ␉␉else␊ |
737 | ␉␉{␊ |
738 | ␉␉␉DBG("Kernel Cache using disabled by user.\n");␊ |
739 | ␉␉}␊ |
740 | ␊ |
741 | ␉␉do␊ |
742 | ␉␉{␊ |
743 | ␉␉␉if (useKernelCache)␊ |
744 | ␉␉␉{␊ |
745 | ␉␉␉␉ret = LoadKernelCache(kernelCacheFile, &binary);␊ |
746 | ␉␉␉␉if (ret >= 0)␊ |
747 | ␉␉␉␉{␊ |
748 | ␉␉␉␉␉break;␊ |
749 | ␉␉␉␉}␊ |
750 | ␉␉␉}␊ |
751 | ␊ |
752 | ␉␉␉bool bootFileWithDevice = false;␊ |
753 | ␉␉␉// Check if bootFile start with a device ex: bt(0,0)/Extra/mach_kernel␊ |
754 | ␉␉␉if (strncmp(bootInfo->bootFile,"bt(",3) == 0 ||␊ |
755 | ␉␉␉␉strncmp(bootInfo->bootFile,"hd(",3) == 0 ||␊ |
756 | ␉␉␉␉strncmp(bootInfo->bootFile,"rd(",3) == 0)␊ |
757 | ␉␉␉␉bootFileWithDevice = true;␊ |
758 | ␊ |
759 | ␉␉␉// bootFile must start with a / if it not start with a device name␊ |
760 | ␉␉␉if (!bootFileWithDevice && (bootInfo->bootFile)[0] != '/')␊ |
761 | ␉␉␉{␊ |
762 | ␉␉␉␉if (MacOSVerCurrent >= MacOSVer2Int("10.10")) // OSX is 10.10 or newer␊ |
763 | ␉␉␉␉{␊ |
764 | ␉␉␉␉␉snprintf(bootFile, sizeof(bootFile), kDefaultKernelPathForYos "%s", bootInfo->bootFile); // Yosemite␊ |
765 | ␉␉␉␉}␊ |
766 | ␉␉␉␉else␊ |
767 | ␉␉␉␉{␊ |
768 | ␉␉␉␉␉snprintf(bootFile, sizeof(bootFile), "/%s", bootInfo->bootFile); // append a leading '/'␊ |
769 | ␉␉␉␉}␊ |
770 | ␉␉␉}␊ |
771 | ␉␉␉else␊ |
772 | ␉␉␉{␊ |
773 | ␉␉␉␉strlcpy(bootFile, bootInfo->bootFile, sizeof(bootFile));␊ |
774 | ␉␉␉}␊ |
775 | ␊ |
776 | ␉␉␉// Try to load kernel image from alternate locations on boot helper partitions.␊ |
777 | ␉␉␉ret = -1;␊ |
778 | ␉␉␉if ((gBootVolume->flags & kBVFlagBooter) && !bootFileWithDevice)␊ |
779 | ␉␉␉{␊ |
780 | ␉␉␉␉snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.P%s", bootFile);␊ |
781 | ␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
782 | ␉␉␉␉if (ret == -1)␊ |
783 | ␉␉␉␉{␊ |
784 | ␉␉␉␉␉snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.R%s", bootFile);␊ |
785 | ␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
786 | ␉␉␉␉␉if (ret == -1)␊ |
787 | ␉␉␉␉␉{␊ |
788 | ␉␉␉␉␉␉snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.S%s", bootFile);␊ |
789 | ␉␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
790 | ␉␉␉␉␉}␊ |
791 | ␉␉␉␉}␊ |
792 | ␉␉␉}␊ |
793 | ␉␉␉if (ret == -1)␊ |
794 | ␉␉␉{␊ |
795 | ␉␉␉␉// No alternate location found, using the original kernel image path.␊ |
796 | ␉␉␉␉strlcpy(bootFilePath, bootFile, sizeof(bootFilePath));␊ |
797 | ␉␉␉}␊ |
798 | ␊ |
799 | ␉␉␉DBG("Loading kernel from: '%s' (%s)\n", gBootVolume->label, gBootVolume->type_name);␊ |
800 | ␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊ |
801 | ␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
802 | ␉␉␉{␊ |
803 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
804 | ␉␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊ |
805 | ␉␉␉}␊ |
806 | ␉␉} while (0);␊ |
807 | ␊ |
808 | ␉␉clearActivityIndicator();␊ |
809 | ␊ |
810 | #if DEBUG␊ |
811 | ␉␉printf("Pausing...");␊ |
812 | ␉␉sleep(8);␊ |
813 | #endif␊ |
814 | ␊ |
815 | ␉␉if (ret <= 0)␊ |
816 | ␉␉{␊ |
817 | ␉␉␉printf("Can't find boot file: '%s'\n", bootFile);␊ |
818 | ␉␉␉sleep(1);␊ |
819 | ␊ |
820 | ␉␉␉if (gBootFileType == kNetworkDeviceType)␊ |
821 | ␉␉␉{␊ |
822 | ␉␉␉␉// Return control back to PXE. Don't unload PXE base code.␊ |
823 | ␉␉␉␉gUnloadPXEOnExit = false;␊ |
824 | ␉␉␉␉break;␊ |
825 | ␉␉␉}␊ |
826 | ␉␉␉pause();␊ |
827 | ␊ |
828 | ␉␉}␊ |
829 | ␉␉else␊ |
830 | ␉␉{␊ |
831 | ␉␉␉/* Won't return if successful. */␊ |
832 | ␉␉␉ret = ExecKernel(binary);␊ |
833 | ␉␉}␊ |
834 | ␉}␊ |
835 | ␊ |
836 | ␉// chainboot␊ |
837 | ␉if (status == 1)␊ |
838 | ␉{␊ |
839 | ␉␉// if we are already in graphics-mode,␊ |
840 | ␉␉if (getVideoMode() == GRAPHICS_MODE)␊ |
841 | ␉␉{␊ |
842 | ␉␉␉setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode.␊ |
843 | ␉␉}␊ |
844 | ␉}␊ |
845 | ␊ |
846 | ␉if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit)␊ |
847 | ␉{␊ |
848 | ␉␉nbpUnloadBaseCode();␊ |
849 | ␉}␊ |
850 | ␉if (interruptsAvailable) DisableInterrupts();␊ |
851 | }␊ |
852 | ␊ |
853 | /*!␊ |
854 | ␉Selects a new BIOS device, taking care to update the global state appropriately.␊ |
855 | */␊ |
856 | /*␊ |
857 | static void selectBiosDevice(void)␊ |
858 | {␊ |
859 | ␉struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
860 | ␉CacheReset();␊ |
861 | ␉diskFreeMap(oldMap);␊ |
862 | ␉oldMap = NULL;␊ |
863 | ␊ |
864 | ␉int dev = selectAlternateBootDevice(gBIOSDev);␊ |
865 | ␊ |
866 | ␉BVRef bvchain = scanBootVolumes(dev, 0);␊ |
867 | ␉BVRef bootVol = selectBootVolume(bvchain);␊ |
868 | ␉gBootVolume = bootVol;␊ |
869 | ␉setRootVolume(bootVol);␊ |
870 | ␉gBIOSDev = dev;␊ |
871 | }␊ |
872 | */␊ |
873 | ␊ |
874 | bool checkOSVersion(const char * version)␊ |
875 | {␊ |
876 | ␉if ( (sizeof(version) > 4) && ('.' != version[4]) && ('\0' != version[4]) )␊ |
877 | ␉{␊ |
878 | ␉␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1])␊ |
879 | ␉␉&& (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3])␊ |
880 | ␉␉&& (gMacOSVersion[4] == version[4]));␊ |
881 | ␉}␊ |
882 | ␉else␊ |
883 | ␉{␊ |
884 | ␉␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1])␊ |
885 | ␉␉&& (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊ |
886 | ␉}␊ |
887 | }␊ |
888 | ␊ |
889 | uint32_t getMacOSVerCurrent()␊ |
890 | {␊ |
891 | ␉MacOSVerCurrent = MacOSVer2Int(gBootVolume->OSVersion);␊ |
892 | ␉return MacOSVerCurrent;␊ |
893 | }␊ |
894 | ␊ |
895 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
896 | #define NMAX 5000␊ |
897 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
898 | ␊ |
899 | #define DO1(buf, i)␉{s1 += buf[i]; s2 += s1;}␊ |
900 | #define DO2(buf, i)␉DO1(buf, i); DO1(buf, i + 1);␊ |
901 | #define DO4(buf, i)␉DO2(buf, i); DO2(buf, i + 2);␊ |
902 | #define DO8(buf, i)␉DO4(buf, i); DO4(buf, i + 4);␊ |
903 | #define DO16(buf)␉DO8(buf, 0); DO8(buf, 8);␊ |
904 | ␊ |
905 | unsigned long Adler32(unsigned char *buf, long len)␊ |
906 | {␊ |
907 | ␉unsigned long s1 = 1; // adler & 0xffff;␊ |
908 | ␉unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
909 | ␉unsigned long result;␊ |
910 | ␉int k;␊ |
911 | ␊ |
912 | ␉while (len > 0) {␊ |
913 | ␉␉k = len < NMAX ? len : NMAX;␊ |
914 | ␉␉len -= k;␊ |
915 | ␉␉while (k >= 16) {␊ |
916 | ␉␉␉DO16(buf);␊ |
917 | ␉␉␉buf += 16;␊ |
918 | ␉␉␉k -= 16;␊ |
919 | ␉␉}␊ |
920 | ␉␉if (k != 0) do {␊ |
921 | ␉␉␉s1 += *buf++;␊ |
922 | ␉␉␉s2 += s1;␊ |
923 | ␉␉} while (--k);␊ |
924 | ␉␉s1 %= BASE;␊ |
925 | ␉␉s2 %= BASE;␊ |
926 | ␉}␊ |
927 | ␉result = (s2 << 16) | s1;␊ |
928 | ␉return OSSwapHostToBigInt32(result);␊ |
929 | }␊ |
930 | |