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Source at commit 1076 created 9 years 11 days 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{
96extern char _DATA__bss__begin, _DATA__bss__end;
97extern char _DATA__common__begin, _DATA__common__end;
98
99bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));
100bzero(&_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{
108stop("\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{
116zeroBSS();
117malloc_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{
126initialize_runtime();
127// Enable A20 gate before accessing memory above 1Mb.
128enableA20();
129common_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
148init_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