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Source at commit 1068 created 9 years 18 days ago.
By meklort, Remove some libsaio files...
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 "modules.h"
57
58long gBootMode; /* defaults to 0 == kBootModeNormal */
59bool gOverrideKernel;
60char *gPlatformName;
61char gRootDevice[512];
62char gMKextName[512];
63char gMacOSVersion[8];
64bool gEnableCDROMRescan;
65bool gScanSingleDrive;
66
67int bvCount = 0;
68int gDeviceCount = 0;
69
70BVRef bvr;
71BVRef menuBVR;
72BVRef bvChain;
73bool useGUI;
74
75/*
76 * How long to wait (in seconds) to load the
77 * kernel after displaying the "boot:" prompt.
78 */
79#define kBootErrorTimeout 5
80
81/*
82 * Default path to kernel cache file
83 */
84//Slice - first one for Leopard
85#define kDefaultCachePathLeo "/System/Library/Caches/com.apple.kernelcaches/"
86#define kDefaultCachePathSnow "/System/Library/Caches/com.apple.kext.caches/Startup/"
87
88//==========================================================================
89// Zero the BSS.
90
91static void zeroBSS(void)
92{
93extern char _DATA__bss__begin, _DATA__bss__end;
94extern char _DATA__common__begin, _DATA__common__end;
95
96bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));
97bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));
98}
99
100//==========================================================================
101// Malloc error function
102
103static void malloc_error(char *addr, size_t size, const char *file, int line)
104{
105stop("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);
106}
107
108//==========================================================================
109//Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.
110//
111void initialize_runtime(void)
112{
113zeroBSS();
114malloc_init(0, 0, 0, malloc_error);
115}
116
117//==========================================================================
118// This is the entrypoint from real-mode which functions exactly as it did
119// before. Multiboot does its own runtime initialization, does some of its
120// own things, and then calls common_boot.
121void boot(int biosdev)
122{
123initialize_runtime();
124// Enable A20 gate before accessing memory above 1Mb.
125enableA20();
126common_boot(biosdev);
127}
128
129//==========================================================================
130// The 'main' function for the booter. Called by boot0 when booting
131// from a block device, or by the network booter.
132//
133// arguments:
134// biosdev - Value passed from boot1/NBP to specify the device
135// that the booter was loaded from.
136//
137// If biosdev is kBIOSDevNetwork, then this function will return if
138// booting was unsuccessful. This allows the PXE firmware to try the
139// next boot device on its list.
140void common_boot(int biosdev)
141{
142 //unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;
143// unsigned int denyBVFlags = kBVFlagEFISystem;
144
145 // Setup VGA text mode.
146 // Not sure if it is safe to call setVideoMode() before the
147 // config table has been loaded. Call video_mode() instead.
148 video_mode( 2 ); // 80x25 mono text mode.
149
150 // TOOD: move to a module
151 /*
152 // Scan and record the system's hardware information.
153 scan_platform();
154
155 // First get info for boot volume.
156 scanBootVolumes(gBIOSDev, 0);
157
158 bvChain = getBVChainForBIOSDev(gBIOSDev);
159
160 setBootGlobals(bvChain);
161
162 scanDisks(gBIOSDev, &bvCount);
163
164 // Create a separated bvr chain using the specified filters.
165 bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);
166
167 gBootVolume = selectBootVolume(bvChain);
168 */
169// Intialize module system
170init_module_system();
171}

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Revision: 1068