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Source at commit 1066 created 12 years 10 months ago. By meklort, Removing even more code... | |
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1 | /*␊ |
2 | * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * @APPLE_LICENSE_HEADER_START@␊ |
5 | * ␊ |
6 | * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
7 | * Reserved. This file contains Original Code and/or Modifications of␊ |
8 | * Original Code as defined in and that are subject to the Apple Public␊ |
9 | * Source License Version 2.0 (the "License"). You may not use this file␊ |
10 | * except in compliance with the License. Please obtain a copy of the␊ |
11 | * License at http://www.apple.com/publicsource and read it before using␊ |
12 | * this file.␊ |
13 | * ␊ |
14 | * The Original Code and all software distributed under the License are␊ |
15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the␊ |
19 | * License for the specific language governing rights and limitations␊ |
20 | * under the License.␊ |
21 | * ␊ |
22 | * @APPLE_LICENSE_HEADER_END@␊ |
23 | */␊ |
24 | /* ␊ |
25 | * Mach Operating System␊ |
26 | * Copyright (c) 1990 Carnegie-Mellon University␊ |
27 | * Copyright (c) 1989 Carnegie-Mellon University␊ |
28 | * All rights reserved. The CMU software License Agreement specifies␊ |
29 | * the terms and conditions for use and redistribution.␊ |
30 | */␊ |
31 | ␊ |
32 | /*␊ |
33 | * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
34 | *␊ |
35 | * This software is supplied under the terms of a license agreement or ␊ |
36 | * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
37 | * nor disclosed except in accordance with the terms of that agreement.␊ |
38 | *␊ |
39 | * Copyright 1988, 1989 by Intel Corporation␊ |
40 | */␊ |
41 | ␊ |
42 | /*␊ |
43 | * Copyright 1993 NeXT Computer, Inc.␊ |
44 | * All rights reserved.␊ |
45 | */␊ |
46 | ␊ |
47 | /*␊ |
48 | * Completely reworked by Sam Streeper (sam_s@NeXT.com)␊ |
49 | * Reworked again by Curtis Galloway (galloway@NeXT.com)␊ |
50 | */␊ |
51 | ␊ |
52 | ␊ |
53 | #include "boot.h"␊ |
54 | #include "sl.h"␊ |
55 | #include "libsa.h"␊ |
56 | #include "platform.h"␊ |
57 | #include "modules.h"␊ |
58 | ␊ |
59 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
60 | bool gOverrideKernel;␊ |
61 | char *gPlatformName;␊ |
62 | char gRootDevice[512];␊ |
63 | char gMKextName[512];␊ |
64 | char gMacOSVersion[8];␊ |
65 | bool gEnableCDROMRescan;␊ |
66 | bool gScanSingleDrive;␊ |
67 | ␊ |
68 | int bvCount = 0;␊ |
69 | int gDeviceCount = 0; ␊ |
70 | ␊ |
71 | BVRef bvr;␊ |
72 | BVRef menuBVR;␊ |
73 | BVRef bvChain;␊ |
74 | bool useGUI;␊ |
75 | ␊ |
76 | /*␊ |
77 | * How long to wait (in seconds) to load the␊ |
78 | * kernel after displaying the "boot:" prompt.␊ |
79 | */␊ |
80 | #define kBootErrorTimeout 5␊ |
81 | ␊ |
82 | /*␊ |
83 | * Default path to kernel cache file␊ |
84 | */␊ |
85 | //Slice - first one for Leopard␊ |
86 | #define kDefaultCachePathLeo "/System/Library/Caches/com.apple.kernelcaches/"␊ |
87 | #define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"␊ |
88 | ␊ |
89 | //==========================================================================␊ |
90 | // Zero the BSS.␊ |
91 | ␊ |
92 | static void zeroBSS(void)␊ |
93 | {␊ |
94 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
95 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
96 | ␊ |
97 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
98 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
99 | }␊ |
100 | ␊ |
101 | //==========================================================================␊ |
102 | // Malloc error function␊ |
103 | ␊ |
104 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
105 | {␊ |
106 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
107 | }␊ |
108 | ␊ |
109 | //==========================================================================␊ |
110 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
111 | //␊ |
112 | void initialize_runtime(void)␊ |
113 | {␊ |
114 | ␉zeroBSS();␊ |
115 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
116 | }␊ |
117 | ␊ |
118 | //==========================================================================␊ |
119 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
120 | // before. Multiboot does its own runtime initialization, does some of its␊ |
121 | // own things, and then calls common_boot.␊ |
122 | void boot(int biosdev)␊ |
123 | {␊ |
124 | ␉initialize_runtime();␊ |
125 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
126 | ␉enableA20();␊ |
127 | ␉common_boot(biosdev);␊ |
128 | }␊ |
129 | ␊ |
130 | //==========================================================================␊ |
131 | // The 'main' function for the booter. Called by boot0 when booting␊ |
132 | // from a block device, or by the network booter.␊ |
133 | //␊ |
134 | // arguments:␊ |
135 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
136 | // that the booter was loaded from.␊ |
137 | //␊ |
138 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
139 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
140 | // next boot device on its list.␊ |
141 | void common_boot(int biosdev)␊ |
142 | {␊ |
143 | //unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;␊ |
144 | // unsigned int denyBVFlags = kBVFlagEFISystem;␊ |
145 | ␊ |
146 | // Setup VGA text mode.␊ |
147 | // Not sure if it is safe to call setVideoMode() before the␊ |
148 | // config table has been loaded. Call video_mode() instead.␊ |
149 | video_mode( 2 ); // 80x25 mono text mode.␊ |
150 | ␊ |
151 | // TOOD: move to a module␊ |
152 | /*␊ |
153 | // Scan and record the system's hardware information.␊ |
154 | scan_platform();␊ |
155 | ␊ |
156 | // First get info for boot volume.␊ |
157 | scanBootVolumes(gBIOSDev, 0);␊ |
158 | ␊ |
159 | bvChain = getBVChainForBIOSDev(gBIOSDev);␊ |
160 | ␊ |
161 | setBootGlobals(bvChain);␊ |
162 | ␊ |
163 | scanDisks(gBIOSDev, &bvCount);␊ |
164 | ␊ |
165 | // Create a separated bvr chain using the specified filters.␊ |
166 | bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);␊ |
167 | ␊ |
168 | gBootVolume = selectBootVolume(bvChain);␊ |
169 | */␊ |
170 | ␉// Intialize module system ␊ |
171 | ␉init_module_system();␊ |
172 | } |