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Source at commit 1076 created 12 years 9 months ago.
By meklort, Removed disk code + fs code from libsaio. Moved modulesystem to within /modules/ folder
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␊
57extern void init_module_system();␊
58extern int execute_hook(const char* name, void*, void*, void*, void*);␊
59␊
60␊
61long gBootMode; /* defaults to 0 == kBootModeNormal */␊
62bool gOverrideKernel;␊
63char *gPlatformName;␊
64char gRootDevice[512];␊
65char gMKextName[512];␊
66char gMacOSVersion[8];␊
67bool gEnableCDROMRescan;␊
68bool gScanSingleDrive;␊
69␊
70int bvCount = 0;␊
71int gDeviceCount = 0; ␊
72␊
73BVRef bvr;␊
74BVRef menuBVR;␊
75BVRef bvChain;␊
76bool 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␊
94static 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␊
106static 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//␊
114void 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.␊
124void 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.␊
143void 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

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Revision: 1076