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Source at commit 1085 created 13 years 1 month ago. By azimutz, Runaway "min"; fixes build. | |
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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 | ␊ |
57 | extern void init_module_system();␊ |
58 | extern int execute_hook(const char* name, void*, void*, void*, void*);␊ |
59 | ␊ |
60 | ␊ |
61 | long gBootMode; /* defaults to 0 == kBootModeNormal */␊ |
62 | bool gOverrideKernel;␊ |
63 | char *gPlatformName;␊ |
64 | char gRootDevice[512];␊ |
65 | char gMKextName[512];␊ |
66 | char gMacOSVersion[8];␊ |
67 | bool gEnableCDROMRescan;␊ |
68 | bool gScanSingleDrive;␊ |
69 | ␊ |
70 | int bvCount = 0;␊ |
71 | int gDeviceCount = 0; ␊ |
72 | ␊ |
73 | BVRef bvr;␊ |
74 | BVRef menuBVR;␊ |
75 | BVRef bvChain;␊ |
76 | bool useGUI;␊ |
77 | ␊ |
78 | /*␊ |
79 | * How long to wait (in seconds) to load the␊ |
80 | * kernel after displaying the "boot:" prompt.␊ |
81 | */␊ |
82 | #define kBootErrorTimeout 5␊ |
83 | ␊ |
84 | /*␊ |
85 | * Default path to kernel cache file␊ |
86 | */␊ |
87 | //Slice - first one for Leopard␊ |
88 | #define kDefaultCachePathLeo "/System/Library/Caches/com.apple.kernelcaches/"␊ |
89 | #define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"␊ |
90 | ␊ |
91 | //==========================================================================␊ |
92 | // Zero the BSS.␊ |
93 | ␊ |
94 | static void zeroBSS(void)␊ |
95 | {␊ |
96 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
97 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
98 | ␊ |
99 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
100 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
101 | }␊ |
102 | ␊ |
103 | //==========================================================================␊ |
104 | // Malloc error function␊ |
105 | ␊ |
106 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
107 | {␊ |
108 | ␉stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
109 | }␊ |
110 | ␊ |
111 | //==========================================================================␊ |
112 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
113 | //␊ |
114 | void initialize_runtime(void)␊ |
115 | {␊ |
116 | ␉zeroBSS();␊ |
117 | ␉malloc_init(0, 0, 0, malloc_error);␊ |
118 | }␊ |
119 | ␊ |
120 | //==========================================================================␊ |
121 | // This is the entrypoint from real-mode which functions exactly as it did␊ |
122 | // before. Multiboot does its own runtime initialization, does some of its␊ |
123 | // own things, and then calls common_boot.␊ |
124 | void boot(int biosdev)␊ |
125 | {␊ |
126 | ␉initialize_runtime();␊ |
127 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
128 | ␉enableA20();␊ |
129 | ␉common_boot(biosdev);␊ |
130 | }␊ |
131 | ␊ |
132 | //==========================================================================␊ |
133 | // The 'main' function for the booter. Called by boot0 when booting␊ |
134 | // from a block device, or by the network booter.␊ |
135 | //␊ |
136 | // arguments:␊ |
137 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
138 | // that the booter was loaded from.␊ |
139 | //␊ |
140 | // If biosdev is kBIOSDevNetwork, then this function will return if␊ |
141 | // booting was unsuccessful. This allows the PXE firmware to try the␊ |
142 | // next boot device on its list.␊ |
143 | void common_boot(int biosdev)␊ |
144 | {␊ |
145 | video_mode( 2 ); // 80x25 mono text mode.␊ |
146 | ␊ |
147 | ␉// Intialize module system ␊ |
148 | ␉init_module_system();␊ |
149 | ␊ |
150 | int loopCount = 0;␊ |
151 | while(1)␊ |
152 | {␊ |
153 | execute_hook("WorkLoop", (void*)loopCount++, NULL, NULL, NULL);␉// Main work loop␊ |
154 | }␊ |
155 | }␊ |
156 |