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 | ␊ |
33 | /*␊ |
34 | *␉␉␉INTEL CORPORATION PROPRIETARY INFORMATION␊ |
35 | *␊ |
36 | *␉This software is supplied under the terms of a license␉agreement or␊ |
37 | *␉nondisclosure agreement with Intel Corporation and may not be copied␊ |
38 | *␉nor disclosed except in accordance with the terms of that agreement.␊ |
39 | *␊ |
40 | *␉Copyright 1988, 1989 by Intel Corporation␊ |
41 | */␊ |
42 | ␊ |
43 | /*␊ |
44 | * Copyright 1993 NeXT Computer, Inc.␊ |
45 | * All rights reserved.␊ |
46 | */␊ |
47 | ␊ |
48 | /*␊ |
49 | * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊ |
50 | * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
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 | /*␊ |
64 | * How long to wait (in seconds) to load the␊ |
65 | * kernel after displaying the "boot:" prompt.␊ |
66 | */␊ |
67 | #define kBootErrorTimeout 5␊ |
68 | ␊ |
69 | bool␉␉gOverrideKernel, gEnableCDROMRescan, gScanSingleDrive, useGUI;␊ |
70 | static bool␉gUnloadPXEOnExit = false;␊ |
71 | ␊ |
72 | static char␉gCacheNameAdler[64 + 256];␊ |
73 | char␉␉*gPlatformName = gCacheNameAdler;␊ |
74 | ␊ |
75 | char␉␉gRootDevice[ROOT_DEVICE_SIZE];␊ |
76 | char␉␉gMKextName[512];␊ |
77 | char␉␉gMacOSVersion[8];␊ |
78 | int␉␉␉bvCount = 0, gDeviceCount = 0;␊ |
79 | //int␉␉menucount = 0;␊ |
80 | long␉␉gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
81 | BVRef␉␉bvr, menuBVR, bvChain;␊ |
82 | ␊ |
83 | static bool␉␉␉␉checkOSVersion(const char * version);␊ |
84 | static void␉␉␉␉getOSVersion();␊ |
85 | static unsigned long␉Adler32(unsigned char *buffer, long length);␊ |
86 | //static void␉␉␉selectBiosDevice(void);␊ |
87 | ␊ |
88 | /** options.c **/␊ |
89 | extern char* msgbuf;␊ |
90 | void showTextBuffer(char *buf, int size);␊ |
91 | ␊ |
92 | ␊ |
93 | //==========================================================================␊ |
94 | // Zero the BSS.␊ |
95 | ␊ |
96 | static void zeroBSS(void)␊ |
97 | {␊ |
98 | ␉extern char bss_start __asm("section$start$__DATA$__bss");␊ |
99 | extern char bss_end __asm("section$end$__DATA$__bss");␊ |
100 | extern char common_start __asm("section$start$__DATA$__common");␊ |
101 | extern char common_end __asm("section$end$__DATA$__common");␊ |
102 | ␊ |
103 | ␉bzero(&bss_start, (&bss_end - &bss_start));␊ |
104 | ␉bzero(&common_start, (&common_end - &common_start));␊ |
105 | }␊ |
106 | ␊ |
107 | //==========================================================================␊ |
108 | // Malloc error function␊ |
109 | ␊ |
110 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
111 | {␊ |
112 | ␉stop("\nMemory allocation error! Addr: 0x%x, Size: 0x%x, File: %s, Line: %d\n",␊ |
113 | ␉␉␉␉␉␉␉␉␉ (unsigned)addr, (unsigned)size, file, line);␊ |
114 | }␊ |
115 | ␊ |
116 | //==========================================================================␊ |
117 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
118 | //␊ |
119 | void initialize_runtime(void)␊ |
120 | {␊ |
121 | ␉zeroBSS();␊ |
122 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
123 | }␊ |
124 | ␊ |
125 | //==========================================================================␊ |
126 | // execKernel - Load the kernel image (mach-o) and jump to its entry point.␊ |
127 | ␊ |
128 | static int ExecKernel(void *binary)␊ |
129 | {␊ |
130 | ␉int␉␉␉ret;␊ |
131 | ␉entry_t␉␉kernelEntry;␊ |
132 | ␊ |
133 | ␉bootArgs->kaddr = bootArgs->ksize = 0;␊ |
134 | ␉execute_hook("ExecKernel", (void*)binary, NULL, NULL, NULL);␊ |
135 | ␊ |
136 | ␉ret = DecodeKernel(binary,␊ |
137 | ␉␉␉␉␉ &kernelEntry,␊ |
138 | ␉␉␉␉␉ (char **) &bootArgs->kaddr,␊ |
139 | ␉␉␉␉␉ (int *)&bootArgs->ksize );␊ |
140 | ␊ |
141 | ␉if ( ret != 0 )␊ |
142 | ␉␉return ret;␊ |
143 | ␊ |
144 | ␉// Reserve space for boot args␊ |
145 | ␉reserveKernBootStruct();␊ |
146 | ␊ |
147 | ␉// Notify modules that the kernel has been decoded␊ |
148 | ␉execute_hook("DecodedKernel", (void*)binary, (void*)bootArgs->kaddr, (void*)bootArgs->ksize, NULL);␊ |
149 | ␊ |
150 | ␉setupFakeEfi();␊ |
151 | ␊ |
152 | ␉// Load boot drivers from the specifed root path.␊ |
153 | ␉//if (!gHaveKernelCache)␊ |
154 | ␉LoadDrivers("/");␊ |
155 | ␊ |
156 | ␉execute_hook("DriversLoaded", (void*)binary, NULL, NULL, NULL);␊ |
157 | ␊ |
158 | ␉clearActivityIndicator();␊ |
159 | ␊ |
160 | ␉if (gErrors) {␊ |
161 | ␉␉printf("Errors encountered while starting up the computer.\n");␊ |
162 | ␉␉printf("Pausing %d seconds...\n", kBootErrorTimeout);␊ |
163 | ␉␉sleep(kBootErrorTimeout);␊ |
164 | ␉}␊ |
165 | ␊ |
166 | ␉md0Ramdisk();␊ |
167 | ␊ |
168 | ␉verbose("Starting Darwin %s\n",( archCpuType == CPU_TYPE_I386 ) ? "x86" : "x86_64");␊ |
169 | ␉verbose("Boot Args: %s\n", bootArgs->CommandLine);␊ |
170 | ␊ |
171 | ␉// Cleanup the PXE base code.␊ |
172 | ␊ |
173 | ␉if ( (gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit ) {␊ |
174 | ␉␉if ( (ret = nbpUnloadBaseCode()) != nbpStatusSuccess )␊ |
175 | ␉␉{␊ |
176 | ␉␉␉printf("nbpUnloadBaseCode error %d\n", (int) ret);␊ |
177 | ␉␉␉sleep(2);␊ |
178 | ␉␉}␊ |
179 | ␉}␊ |
180 | ␊ |
181 | ␉bool dummyVal;␊ |
182 | ␉if (getBoolForKey(kWaitForKeypressKey, &dummyVal, &bootInfo->chameleonConfig) && dummyVal) {␊ |
183 | ␉␉showTextBuffer(msgbuf, strlen(msgbuf));␊ |
184 | ␉}␊ |
185 | ␊ |
186 | ␉usb_loop();␊ |
187 | ␊ |
188 | ␉// If we were in text mode, switch to graphics mode.␊ |
189 | ␉// This will draw the boot graphics unless we are in␊ |
190 | ␉// verbose mode.␊ |
191 | ␉if (gVerboseMode)␊ |
192 | ␉␉setVideoMode( GRAPHICS_MODE, 0 );␊ |
193 | ␉else␊ |
194 | ␉␉drawBootGraphics();␊ |
195 | ␊ |
196 | ␉setupBooterLog();␊ |
197 | ␊ |
198 | ␉finalizeBootStruct();␊ |
199 | ␊ |
200 | ␉// Jump to kernel's entry point. There's no going back now.␊ |
201 | ␉if ((checkOSVersion("10.7")) || (checkOSVersion("10.8")) || (checkOSVersion("10.9")))␊ |
202 | ␉{␊ |
203 | ␊ |
204 | ␉␉// Notify modules that the kernel is about to be started␊ |
205 | ␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgs, NULL, NULL);␊ |
206 | ␊ |
207 | ␉␉// Masking out so that Lion doesn't doublefault␊ |
208 | ␉␉outb(0x21, 0xff);␉/* Maskout all interrupts Pic1 */␊ |
209 | ␉␉outb(0xa1, 0xff);␉/* Maskout all interrupts Pic2 */␊ |
210 | ␊ |
211 | ␉␉startprog( kernelEntry, bootArgs );␊ |
212 | ␉}␊ |
213 | ␉else {␊ |
214 | ␉␉// Notify modules that the kernel is about to be started␊ |
215 | ␉␉execute_hook("Kernel Start", (void*)kernelEntry, (void*)bootArgsPreLion, NULL, NULL);␊ |
216 | ␊ |
217 | ␉␉startprog( kernelEntry, bootArgsPreLion );␊ |
218 | ␉}␊ |
219 | ␊ |
220 | ␉// Not reached␊ |
221 | ␉return 0;␊ |
222 | }␊ |
223 | ␊ |
224 | ␊ |
225 | //==========================================================================␊ |
226 | // LoadKernelCache - Try to load Kernel Cache.␊ |
227 | // return the length of the loaded cache file or -1 on error␊ |
228 | long LoadKernelCache(const char* cacheFile, void **binary) {␊ |
229 | ␉char␉␉kernelCacheFile[512];␊ |
230 | ␉char␉␉kernelCachePath[512];␊ |
231 | ␉long␉␉flags, time, cachetime, kerneltime, exttime, ret=-1;␊ |
232 | unsigned long adler32;␊ |
233 | ␊ |
234 | if((gBootMode & kBootModeSafe) != 0)␊ |
235 | {␊ |
236 | ␉␉verbose("Kernel Cache ignored.\n");␊ |
237 | ␉␉return -1;␊ |
238 | }␊ |
239 | ␊ |
240 | ␉// Use specify kernel cache file if not empty␊ |
241 | ␉if (cacheFile[0] != 0)␊ |
242 | ␉{␊ |
243 | ␉␉strlcpy(kernelCacheFile, cacheFile, sizeof(kernelCacheFile));␊ |
244 | ␉␉verbose("Specified kernel cache file path=%s\n", cacheFile);␊ |
245 | ␉}␊ |
246 | ␉else␊ |
247 | ␉{␊ |
248 | ␉␉// Lion, Mountain Lion and Mavericks prelink kernel cache file␊ |
249 | ␉␉if ((checkOSVersion("10.7")) || (checkOSVersion("10.8")) || (checkOSVersion("10.9")))␊ |
250 | ␉␉{␊ |
251 | ␉␉␉sprintf(kernelCacheFile, "%skernelcache", kDefaultCachePathSnow);␊ |
252 | ␉␉␉verbose("L & ML kernel cache file path=%s\n", kernelCacheFile);␊ |
253 | ␉␉}␊ |
254 | ␉␉// Snow Leopard prelink kernel cache file␊ |
255 | ␉␉else if (checkOSVersion("10.6")) {␊ |
256 | ␉␉␉sprintf(kernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386)␊ |
257 | ␉␉␉␉␉? "i386" : "x86_64");␊ |
258 | ␉␉␉int lnam = strlen(kernelCacheFile) + 9; //with adler32␊ |
259 | ␊ |
260 | ␉␉␉char* name;␊ |
261 | ␉␉␉long prev_time = 0;␊ |
262 | ␊ |
263 | ␉␉␉struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);␊ |
264 | ␊ |
265 | ␉␉␉while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)␊ |
266 | ␉␉␉{␊ |
267 | ␉␉␉␉if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time␊ |
268 | ␉␉␉␉␉&& strstr(name, kernelCacheFile) && (name[lnam] != '.'))␊ |
269 | ␉␉␉␉{␊ |
270 | ␉␉␉␉␉sprintf(kernelCacheFile, "%s%s", kDefaultCachePathSnow, name);␊ |
271 | ␉␉␉␉␉prev_time = time;␊ |
272 | ␉␉␉␉}␊ |
273 | ␉␉␉}␊ |
274 | verbose("SnowLeo kernel cache file path=%s\n", kernelCacheFile);␊ |
275 | ␉␉}␊ |
276 | ␉␉else {␊ |
277 | ␉␉␉// Reset cache name.␊ |
278 | ␉␉␉bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);␊ |
279 | ␉␉␉sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);␊ |
280 | ␉␉␉adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));␊ |
281 | ␉␉␉sprintf(kernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);␊ |
282 | verbose("Reseted kernel cache file path=%s\n", kernelCacheFile);␊ |
283 | ␉␉}␊ |
284 | ␉}␊ |
285 | ␊ |
286 | ␉// Check if the kernel cache file exists␊ |
287 | ␉ret = -1;␊ |
288 | ␊ |
289 | ␉// If boot from a boot helper partition check the kernel cache file on it␊ |
290 | ␉if (gBootVolume->flags & kBVFlagBooter) {␊ |
291 | ␉␉sprintf(kernelCachePath, "com.apple.boot.P%s", kernelCacheFile);␊ |
292 | ␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
293 | ␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
294 | ␉␉{␊ |
295 | ␉␉␉sprintf(kernelCachePath, "com.apple.boot.R%s", kernelCacheFile);␊ |
296 | ␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
297 | ␉␉␉if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
298 | ␉␉␉{␊ |
299 | ␉␉␉␉sprintf(kernelCachePath, "com.apple.boot.S%s", kernelCacheFile);␊ |
300 | ␉␉␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
301 | ␉␉␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
302 | ␉␉␉␉␉ret = -1;␊ |
303 | ␉␉␉}␊ |
304 | ␉␉}␊ |
305 | ␉}␊ |
306 | ␉// If not found, use the original kernel cache path.␊ |
307 | ␉if (ret == -1) {␊ |
308 | ␉␉strcpy(kernelCachePath, kernelCacheFile);␊ |
309 | ␉␉ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);␊ |
310 | ␉␉if ((flags & kFileTypeMask) != kFileTypeFlat)␊ |
311 | ␉␉␉ret = -1;␊ |
312 | ␉}␊ |
313 | ␊ |
314 | ␉// Exit if kernel cache file wasn't found␊ |
315 | ␉if (ret == -1) {␊ |
316 | ␉␉verbose("No Kernel Cache File '%s' found\n", kernelCacheFile);␊ |
317 | ␉␉return -1;␊ |
318 | ␉}␊ |
319 | ␊ |
320 | ␉// Check if the kernel cache file is more recent (mtime)␊ |
321 | ␉// than the kernel file or the S/L/E directory␊ |
322 | ␉ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);␊ |
323 | ␉// Check if the kernel file is more recent than the cache file␊ |
324 | ␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeFlat)␊ |
325 | ␉␉&& (kerneltime > cachetime)) {␊ |
326 | ␉␉verbose("Kernel file (%s) is more recent than KernelCache (%s), ignoring KernelCache\n",␊ |
327 | ␉␉␉␉bootInfo->bootFile, kernelCacheFile);␊ |
328 | ␉␉return -1;␊ |
329 | ␉}␊ |
330 | ␊ |
331 | ␉ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);␊ |
332 | ␉// Check if the S/L/E directory time is more recent than the cache file␊ |
333 | ␉if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)␊ |
334 | ␉␉&& (exttime > cachetime)) {␊ |
335 | ␉␉verbose("/System/Library/Extensions is more recent than KernelCache (%s), ignoring KernelCache\n",␊ |
336 | ␉␉␉␉kernelCacheFile);␊ |
337 | ␉␉return -1;␊ |
338 | ␉}␊ |
339 | ␊ |
340 | ␉// Since the kernel cache file exists and is the most recent try to load it␊ |
341 | ␉verbose("Loading kernel cache %s\n", kernelCachePath);␊ |
342 | ␊ |
343 | ␉ret = LoadThinFatFile(kernelCachePath, binary);␊ |
344 | ␉return ret; // ret contain the length of the binary␊ |
345 | }␊ |
346 | ␊ |
347 | //==========================================================================␊ |
348 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
349 | // before. Multiboot does its own runtime initialization, does some of its␊ |
350 | // own things, and then calls common_boot.␊ |
351 | void boot(int biosdev)␊ |
352 | {␊ |
353 | ␉initialize_runtime();␊ |
354 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
355 | ␉enableA20();␊ |
356 | ␉common_boot(biosdev);␊ |
357 | }␊ |
358 | ␊ |
359 | //==========================================================================␊ |
360 | // The 'main' function for the booter. Called by boot0 when booting␊ |
361 | // from a block device, or by the network booter.␊ |
362 | //␊ |
363 | // arguments:␊ |
364 | //␉ biosdev - Value passed from boot1/NBP to specify the device␊ |
365 | //␉␉␉ that the booter was loaded from.␊ |
366 | //␊ |
367 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
368 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
369 | // next boot device on its list.␊ |
370 | void common_boot(int biosDevAndPart)␊ |
371 | {␊ |
372 | ␉bool␉ ␉␉quiet;␊ |
373 | ␉bool␉ ␉␉firstRun = true;␊ |
374 | ␉bool␉ ␉␉instantMenu;␊ |
375 | ␉bool␉ ␉␉rescanPrompt;␊ |
376 | ␉int␉␉␉␉status;␊ |
377 | ␉unsigned int␉allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;␊ |
378 | ␉unsigned int␉denyBVFlags = kBVFlagEFISystem;␊ |
379 | ␊ |
380 | ␉// Set reminder to unload the PXE base code. Neglect to unload␊ |
381 | ␉// the base code will result in a hang or kernel panic.␊ |
382 | ␉gUnloadPXEOnExit = true;␊ |
383 | ␊ |
384 | ␉// Record the device that the booter was loaded from.␊ |
385 | ␉gBIOSDev = biosDevAndPart & kBIOSDevMask;␊ |
386 | ␉gBootPartition = ((biosDevAndPart & 0xFF00) >> 8);␊ |
387 | ␊ |
388 | ␉// Initialize boot info structure.␊ |
389 | ␉initKernBootStruct();␊ |
390 | ␊ |
391 | ␉initBooterLog();␊ |
392 | ␊ |
393 | ␉// Setup VGA text mode.␊ |
394 | ␉// Not sure if it is safe to call setVideoMode() before the␊ |
395 | ␉// config table has been loaded. Call video_mode() instead.␊ |
396 | ␉video_mode( 2 ); // 80x25 mono text mode.␊ |
397 | ␊ |
398 | ␉// Scan and record the system's hardware information.␊ |
399 | ␉scan_platform();␊ |
400 | ␊ |
401 | ␉// First get info for boot volume.␊ |
402 | ␉scanBootVolumes(gBIOSDev, 0);␊ |
403 | ␉bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
404 | ␉setBootGlobals(bvChain);␊ |
405 | ␊ |
406 | ␉// Load boot.plist config file␊ |
407 | ␉status = loadChameleonConfig(&bootInfo->chameleonConfig);␊ |
408 | ␊ |
409 | ␉if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {␊ |
410 | ␉␉gBootMode |= kBootModeQuiet;␊ |
411 | ␉}␊ |
412 | ␊ |
413 | ␉// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config␊ |
414 | ␉if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {␊ |
415 | ␉␉firstRun = false;␊ |
416 | ␉}␊ |
417 | ␊ |
418 | ␉// Loading preboot ramdisk if exists.␊ |
419 | ␉loadPrebootRAMDisk();␊ |
420 | ␊ |
421 | ␉// Disable rescan option by default␊ |
422 | ␉gEnableCDROMRescan = false;␊ |
423 | ␊ |
424 | ␉// Enable it with Rescan=y in system config␊ |
425 | ␉if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig)␊ |
426 | ␉␉&& gEnableCDROMRescan) {␊ |
427 | ␉␉gEnableCDROMRescan = true;␊ |
428 | ␉}␊ |
429 | ␊ |
430 | ␉// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.␊ |
431 | ␉rescanPrompt = false;␊ |
432 | ␉if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig)␊ |
433 | ␉␉&& rescanPrompt && biosDevIsCDROM(gBIOSDev))␊ |
434 | ␉{␊ |
435 | ␉␉gEnableCDROMRescan = promptForRescanOption();␊ |
436 | ␉}␊ |
437 | ␊ |
438 | ␉// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.␊ |
439 | ␉if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig)␊ |
440 | ␉␉&& gScanSingleDrive) {␊ |
441 | ␉␉gScanSingleDrive = true;␊ |
442 | ␉}␊ |
443 | ␊ |
444 | ␉// Create a list of partitions on device(s).␊ |
445 | ␉if (gScanSingleDrive) {␊ |
446 | ␉␉scanBootVolumes(gBIOSDev, &bvCount);␊ |
447 | ␉} else {␊ |
448 | ␉␉scanDisks(gBIOSDev, &bvCount);␊ |
449 | ␉}␊ |
450 | ␊ |
451 | ␉// Create a separated bvr chain using the specified filters.␊ |
452 | ␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
453 | ␊ |
454 | ␉gBootVolume = selectBootVolume(bvChain);␊ |
455 | ␊ |
456 | ␉// Intialize module system␊ |
457 | ␉init_module_system();␊ |
458 | ␊ |
459 | #if DEBUG␊ |
460 | ␉printf("gBIOSDev=%d\n", gBIOSDev);␊ |
461 | ␉printf("gBootPartition=%d\n", gBootPartition);␊ |
462 | ␊ |
463 | ␉printf(" gBootVolume: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊ |
464 | ␉␉␉ gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);␊ |
465 | ␉printf(" gBIOSBootVolume==bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",␊ |
466 | ␉␉␉ gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);␊ |
467 | ␊ |
468 | ␉for (BVRef bvr = bvChain; bvr; bvr = bvr->next)␊ |
469 | ␉{␊ |
470 | ␉␉printf(" chain: %d, dev: %d, part: %d, flags: %d, ver:%s vis: %d\n", bvr, bvr->biosdev, bvr->part_no, bvr->flags, bvr->OSVersion, bvr->visible);␊ |
471 | ␉}␊ |
472 | ␊ |
473 | ␉getchar();␊ |
474 | #endif␊ |
475 | ␊ |
476 | ␊ |
477 | ␉useGUI = true;␊ |
478 | ␉// Override useGUI default␊ |
479 | ␉getBoolForKey(kGUIKey, &useGUI, &bootInfo->chameleonConfig);␊ |
480 | ␉if (useGUI && initGUI())␊ |
481 | ␉{␊ |
482 | ␉␉// initGUI() returned with an error, disabling GUI.␊ |
483 | ␉␉useGUI = false;␊ |
484 | ␉}␊ |
485 | ␊ |
486 | ␉setBootGlobals(bvChain);␊ |
487 | ␊ |
488 | ␉// Parse args, load and start kernel.␊ |
489 | ␉while (1)␊ |
490 | ␉{␊ |
491 | ␉␉bool␉␉tryresume, tryresumedefault, forceresume;␊ |
492 | ␉␉bool␉␉useKernelCache = true; // by default try to use the prelinked kernel␊ |
493 | ␉␉const char␉*val;␊ |
494 | ␉␉int␉␉␉len, ret = -1;␊ |
495 | ␉␉long␉␉flags, sleeptime, time;␊ |
496 | ␉␉void␉␉*binary = (void *)kLoadAddr;␊ |
497 | ␊ |
498 | ␉␉char bootFile[sizeof(bootInfo->bootFile)];␊ |
499 | ␉␉char␉␉bootFilePath[512];␊ |
500 | ␉␉char␉␉kernelCacheFile[512];␊ |
501 | ␊ |
502 | ␉␉// Initialize globals.␊ |
503 | ␉␉sysConfigValid = false;␊ |
504 | ␉␉gErrors␉␉ = false;␊ |
505 | ␊ |
506 | ␉␉status = getBootOptions(firstRun);␊ |
507 | ␉␉firstRun = false;␊ |
508 | ␉␉if (status == -1) continue;␊ |
509 | ␊ |
510 | ␉␉status = processBootOptions();␊ |
511 | ␉␉// Status == 1 means to chainboot␊ |
512 | ␉␉if ( status ==␉1 ) break;␊ |
513 | ␉␉// Status == -1 means that the config file couldn't be loaded or that gBootVolume is NULL␊ |
514 | ␉␉if ( status == -1 )␊ |
515 | ␉␉{␊ |
516 | ␉␉␉// gBootVolume == NULL usually means the user hit escape.␊ |
517 | ␉␉␉if (gBootVolume == NULL)␊ |
518 | ␉␉␉{␊ |
519 | ␉␉␉␉freeFilteredBVChain(bvChain);␊ |
520 | ␊ |
521 | ␉␉␉␉if (gEnableCDROMRescan)␊ |
522 | ␉␉␉␉␉rescanBIOSDevice(gBIOSDev);␊ |
523 | ␊ |
524 | ␉␉␉␉bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
525 | ␉␉␉␉setBootGlobals(bvChain);␊ |
526 | ␉␉␉␉setupDeviceList(&bootInfo->themeConfig);␊ |
527 | ␉␉␉}␊ |
528 | ␉␉␉continue;␊ |
529 | ␉␉}␊ |
530 | ␊ |
531 | ␉␉// Other status (e.g. 0) means that we should proceed with boot.␊ |
532 | ␊ |
533 | ␉␉// Turn off any GUI elements␊ |
534 | ␉␉if ( bootArgs->Video.v_display == GRAPHICS_MODE )␊ |
535 | ␉␉{␊ |
536 | ␉␉␉gui.devicelist.draw = false;␊ |
537 | ␉␉␉gui.bootprompt.draw = false;␊ |
538 | ␉␉␉gui.menu.draw = false;␊ |
539 | ␉␉␉gui.infobox.draw = false;␊ |
540 | ␉␉␉gui.logo.draw = false;␊ |
541 | ␉␉␉drawBackground();␊ |
542 | ␉␉␉updateVRAM();␊ |
543 | ␉␉}␊ |
544 | ␊ |
545 | ␉␉// Find out which version mac os we're booting.␊ |
546 | ␉␉getOSVersion();␊ |
547 | ␊ |
548 | ␉␉if (platformCPUFeature(CPU_FEATURE_EM64T)) {␊ |
549 | ␉␉␉archCpuType = CPU_TYPE_X86_64;␊ |
550 | ␉␉} else {␊ |
551 | ␉␉␉archCpuType = CPU_TYPE_I386;␊ |
552 | ␉␉}␊ |
553 | ␊ |
554 | ␉␉if (getValueForKey(karch, &val, &len, &bootInfo->chameleonConfig)) {␊ |
555 | ␉␉␉if (strncmp(val, "i386", 4) == 0) {␊ |
556 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
557 | ␉␉␉}␊ |
558 | ␉␉}␊ |
559 | ␊ |
560 | ␉␉if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {␊ |
561 | ␉␉␉if (strncmp(val, "i386", 4) == 0) {␊ |
562 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
563 | ␉␉␉}␊ |
564 | ␉␉}␊ |
565 | ␊ |
566 | ␉␉// Notify modules that we are attempting to boot␊ |
567 | ␉␉execute_hook("PreBoot", NULL, NULL, NULL, NULL);␊ |
568 | ␊ |
569 | ␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->chameleonConfig)) {␊ |
570 | ␉␉␉tryresume = true;␊ |
571 | ␉␉␉tryresumedefault = true;␊ |
572 | ␉␉} else {␊ |
573 | ␉␉␉tryresumedefault = false;␊ |
574 | ␉␉}␊ |
575 | ␊ |
576 | ␉␉if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->chameleonConfig)) {␊ |
577 | ␉␉␉forceresume = false;␊ |
578 | ␉␉}␊ |
579 | ␊ |
580 | ␉␉if (forceresume) {␊ |
581 | ␉␉␉tryresume = true;␊ |
582 | ␉␉␉tryresumedefault = false;␊ |
583 | ␉␉}␊ |
584 | ␊ |
585 | ␉␉while (tryresume) {␊ |
586 | ␉␉␉const char *tmp;␊ |
587 | ␉␉␉BVRef bvr;␊ |
588 | ␉␉␉if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))␊ |
589 | ␉␉␉␉val = "/private/var/vm/sleepimage";␊ |
590 | ␊ |
591 | ␉␉␉// Do this first to be sure that root volume is mounted␊ |
592 | ␉␉␉ret = GetFileInfo(0, val, &flags, &sleeptime);␊ |
593 | ␊ |
594 | ␉␉␉if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)␊ |
595 | ␉␉␉␉break;␊ |
596 | ␊ |
597 | ␉␉␉// Can't check if it was hibernation Wake=y is required␊ |
598 | ␉␉␉if (bvr->modTime == 0 && tryresumedefault)␊ |
599 | ␉␉␉␉break;␊ |
600 | ␊ |
601 | ␉␉␉if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))␊ |
602 | ␉␉␉␉break;␊ |
603 | ␊ |
604 | ␉␉␉if (!forceresume && ((sleeptime+3)<bvr->modTime)) {␊ |
605 | #if DEBUG␊ |
606 | ␉␉␉␉printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",␊ |
607 | ␉␉␉␉␉␉bvr->modTime-sleeptime);␊ |
608 | #endif␊ |
609 | ␉␉␉␉break;␊ |
610 | ␉␉␉}␊ |
611 | ␊ |
612 | ␉␉␉HibernateBoot((char *)val);␊ |
613 | ␉␉␉break;␊ |
614 | ␉␉}␊ |
615 | ␊ |
616 | ␉␉verbose("Loading Darwin %s\n", gMacOSVersion);␊ |
617 | ␊ |
618 | ␉␉getBoolForKey(kUseKernelCache, &useKernelCache, &bootInfo->chameleonConfig);␊ |
619 | ␉␉if (useKernelCache) do {␊ |
620 | ␊ |
621 | ␉␉␉// Determine the name of the Kernel Cache␊ |
622 | ␉␉␉if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {␊ |
623 | ␉␉␉␉if (val[0] == '\\')␊ |
624 | ␉␉␉␉{␊ |
625 | ␉␉␉␉␉len--;␊ |
626 | ␉␉␉␉␉val++;␊ |
627 | ␉␉␉␉}␊ |
628 | ␉␉␉␉strlcpy(kernelCacheFile, val, len + 1);␊ |
629 | ␉␉␉} else {␊ |
630 | ␉␉␉␉kernelCacheFile[0] = 0; // Use default kernel cache file␊ |
631 | ␉␉␉}␊ |
632 | ␊ |
633 | ␉␉␉if (gOverrideKernel && kernelCacheFile[0] == 0) {␊ |
634 | ␉␉␉␉verbose("Using a non default kernel (%s) without specifying 'Kernel Cache' path, KernelCache will not be used\n",␊ |
635 | ␉␉␉␉␉␉bootInfo->bootFile);␊ |
636 | ␉␉␉␉useKernelCache = false;␊ |
637 | ␉␉␉␉break;␊ |
638 | ␉␉␉}␊ |
639 | ␉␉␉if (gMKextName[0] != 0) {␊ |
640 | ␉␉␉␉verbose("Using a specific MKext Cache (%s), KernelCache will not be used\n",␊ |
641 | ␉␉␉␉␉␉gMKextName);␊ |
642 | ␉␉␉␉useKernelCache = false;␊ |
643 | ␉␉␉␉break;␊ |
644 | ␉␉␉}␊ |
645 | ␉␉␉if (gBootFileType != kBlockDeviceType)␊ |
646 | ␉␉␉␉useKernelCache = false;␊ |
647 | ␊ |
648 | ␉␉} while(0);␊ |
649 | ␊ |
650 | ␉␉do {␊ |
651 | ␉␉␉if (useKernelCache) {␊ |
652 | ␉␉␉␉ret = LoadKernelCache(kernelCacheFile, &binary);␊ |
653 | ␉␉␉␉if (ret >= 0)␊ |
654 | ␉␉␉␉␉break;␊ |
655 | ␉␉␉}␊ |
656 | ␊ |
657 | ␉␉␉bool bootFileWithDevice = false;␊ |
658 | ␉␉␉// Check if bootFile start with a device ex: bt(0,0)/Extra/mach_kernel␊ |
659 | ␉␉␉if (strncmp(bootInfo->bootFile,"bt(",3) == 0 ||␊ |
660 | ␉␉␉␉strncmp(bootInfo->bootFile,"hd(",3) == 0 ||␊ |
661 | ␉␉␉␉strncmp(bootInfo->bootFile,"rd(",3) == 0)␊ |
662 | ␉␉␉␉bootFileWithDevice = true;␊ |
663 | ␊ |
664 | ␉␉␉// bootFile must start with a / if it not start with a device name␊ |
665 | ␉␉␉if (!bootFileWithDevice && (bootInfo->bootFile)[0] != '/')␊ |
666 | ␉␉␉␉sprintf(bootFile, "/%s", bootInfo->bootFile); // append a leading /␊ |
667 | ␉␉␉else␊ |
668 | ␉␉␉␉strlcpy(bootFile, bootInfo->bootFile, sizeof(bootFile));␊ |
669 | ␊ |
670 | ␉␉␉// Try to load kernel image from alternate locations on boot helper partitions.␊ |
671 | ␉␉␉ret = -1;␊ |
672 | ␉␉␉if ((gBootVolume->flags & kBVFlagBooter) && !bootFileWithDevice) {␊ |
673 | ␉␉␉␉sprintf(bootFilePath, "com.apple.boot.P%s", bootFile);␊ |
674 | ␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
675 | ␉␉␉␉if (ret == -1)␊ |
676 | ␉␉␉␉{␊ |
677 | ␉␉␉␉␉sprintf(bootFilePath, "com.apple.boot.R%s", bootFile);␊ |
678 | ␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
679 | ␉␉␉␉␉if (ret == -1)␊ |
680 | ␉␉␉␉␉{␊ |
681 | ␉␉␉␉␉␉sprintf(bootFilePath, "com.apple.boot.S%s", bootFile);␊ |
682 | ␉␉␉␉␉␉ret = GetFileInfo(NULL, bootFilePath, &flags, &time);␊ |
683 | ␉␉␉␉␉}␊ |
684 | ␉␉␉␉}␊ |
685 | ␉␉␉}␊ |
686 | ␉␉␉if (ret == -1) {␊ |
687 | ␉␉␉␉// No alternate location found, using the original kernel image path.␊ |
688 | ␉␉␉␉strlcpy(bootFilePath, bootFile,sizeof(bootFilePath));␊ |
689 | ␉␉␉}␊ |
690 | ␊ |
691 | ␉␉␉verbose("Loading kernel %s\n", bootFilePath);␊ |
692 | ␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊ |
693 | ␉␉␉if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)␊ |
694 | ␉␉␉{␊ |
695 | ␉␉␉␉archCpuType = CPU_TYPE_I386;␊ |
696 | ␉␉␉␉ret = LoadThinFatFile(bootFilePath, &binary);␊ |
697 | ␉␉␉}␊ |
698 | ␉␉} while (0);␊ |
699 | ␊ |
700 | ␉␉clearActivityIndicator();␊ |
701 | ␊ |
702 | #if DEBUG␊ |
703 | ␉␉printf("Pausing...");␊ |
704 | ␉␉sleep(8);␊ |
705 | #endif␊ |
706 | ␊ |
707 | ␉␉if (ret <= 0) {␊ |
708 | ␉␉␉printf("Can't find %s\n", bootFile);␊ |
709 | ␉␉␉sleep(1);␊ |
710 | ␊ |
711 | ␉␉␉if (gBootFileType == kNetworkDeviceType) {␊ |
712 | ␉␉␉␉// Return control back to PXE. Don't unload PXE base code.␊ |
713 | ␉␉␉␉gUnloadPXEOnExit = false;␊ |
714 | ␉␉␉␉break;␊ |
715 | ␉␉␉}␊ |
716 | ␉␉␉pause();␊ |
717 | ␊ |
718 | ␉␉} else {␊ |
719 | ␉␉␉/* Won't return if successful. */␊ |
720 | ␉␉␉ret = ExecKernel(binary);␊ |
721 | ␉␉}␊ |
722 | ␉}␊ |
723 | ␊ |
724 | ␉// chainboot␊ |
725 | ␉if (status == 1) {␊ |
726 | ␉␉// if we are already in graphics-mode,␊ |
727 | ␉␉if (getVideoMode() == GRAPHICS_MODE) {␊ |
728 | ␉␉␉setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode.␊ |
729 | ␉␉}␊ |
730 | ␉}␊ |
731 | ␊ |
732 | ␉if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {␊ |
733 | ␉␉nbpUnloadBaseCode();␊ |
734 | ␉}␊ |
735 | }␊ |
736 | ␊ |
737 | /*!␊ |
738 | ␉Selects a new BIOS device, taking care to update the global state appropriately.␊ |
739 | */␊ |
740 | /*␊ |
741 | static void selectBiosDevice(void)␊ |
742 | {␊ |
743 | ␉struct DiskBVMap *oldMap = diskResetBootVolumes(gBIOSDev);␊ |
744 | ␉CacheReset();␊ |
745 | ␉diskFreeMap(oldMap);␊ |
746 | ␉oldMap = NULL;␊ |
747 | ␊ |
748 | ␉int dev = selectAlternateBootDevice(gBIOSDev);␊ |
749 | ␊ |
750 | ␉BVRef bvchain = scanBootVolumes(dev, 0);␊ |
751 | ␉BVRef bootVol = selectBootVolume(bvchain);␊ |
752 | ␉gBootVolume = bootVol;␊ |
753 | ␉setRootVolume(bootVol);␊ |
754 | ␉gBIOSDev = dev;␊ |
755 | }␊ |
756 | */␊ |
757 | ␊ |
758 | bool checkOSVersion(const char * version)␊ |
759 | {␊ |
760 | ␉return ((gMacOSVersion[0] == version[0]) && (gMacOSVersion[1] == version[1])␊ |
761 | ␉␉␉&& (gMacOSVersion[2] == version[2]) && (gMacOSVersion[3] == version[3]));␊ |
762 | }␊ |
763 | ␊ |
764 | static void getOSVersion()␊ |
765 | {␊ |
766 | ␉strlcpy(gMacOSVersion, gBootVolume->OSVersion, sizeof(gMacOSVersion));␊ |
767 | }␊ |
768 | ␊ |
769 | #define BASE 65521L /* largest prime smaller than 65536 */␊ |
770 | #define NMAX 5000␊ |
771 | // NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1␊ |
772 | ␊ |
773 | #define DO1(buf, i)␉{s1 += buf[i]; s2 += s1;}␊ |
774 | #define DO2(buf, i)␉DO1(buf, i); DO1(buf, i + 1);␊ |
775 | #define DO4(buf, i)␉DO2(buf, i); DO2(buf, i + 2);␊ |
776 | #define DO8(buf, i)␉DO4(buf, i); DO4(buf, i + 4);␊ |
777 | #define DO16(buf)␉DO8(buf, 0); DO8(buf, 8);␊ |
778 | ␊ |
779 | unsigned long Adler32(unsigned char *buf, long len)␊ |
780 | {␊ |
781 | ␉unsigned long s1 = 1; // adler & 0xffff;␊ |
782 | ␉unsigned long s2 = 0; // (adler >> 16) & 0xffff;␊ |
783 | ␉unsigned long result;␊ |
784 | ␉int k;␊ |
785 | ␊ |
786 | ␉while (len > 0) {␊ |
787 | ␉␉k = len < NMAX ? len : NMAX;␊ |
788 | ␉␉len -= k;␊ |
789 | ␉␉while (k >= 16) {␊ |
790 | ␉␉␉DO16(buf);␊ |
791 | ␉␉␉buf += 16;␊ |
792 | ␉␉␉k -= 16;␊ |
793 | ␉␉}␊ |
794 | ␉␉if (k != 0) do {␊ |
795 | ␉␉␉s1 += *buf++;␊ |
796 | ␉␉␉s2 += s1;␊ |
797 | ␉␉} while (--k);␊ |
798 | ␉␉s1 %= BASE;␊ |
799 | ␉␉s2 %= BASE;␊ |
800 | ␉}␊ |
801 | ␉result = (s2 << 16) | s1;␊ |
802 | ␉return OSSwapHostToBigInt32(result);␊ |
803 | }␊ |
804 | |