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| Source at commit 1323 created 12 years 8 months ago. By meklort, Cleanup i386 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 <stdio.h>␊ |
| 54 | ␊ |
| 55 | #include "boot.h"␊ |
| 56 | #include "memory.h"␊ |
| 57 | ␊ |
| 58 | extern void init_module_system();␊ |
| 59 | extern int execute_hook(const char* name, void*, void*, void*, void*);␊ |
| 60 | ␊ |
| 61 | extern void bzero(void * dst, size_t len);␊ |
| 62 | extern void enableA20(void);␊ |
| 63 | extern void video_mode(int mode);␊ |
| 64 | extern void malloc_init(char * start, int size, int nodes, void (*malloc_error)(char *, size_t, const char *, int));␊ |
| 65 | ␊ |
| 66 | //==========================================================================␊ |
| 67 | // Zero the BSS.␊ |
| 68 | ␊ |
| 69 | static void zeroBSS(void)␊ |
| 70 | {␊ |
| 71 | ␉extern char _DATA__bss__begin, _DATA__bss__end;␊ |
| 72 | ␉extern char _DATA__common__begin, _DATA__common__end;␊ |
| 73 | ␊ |
| 74 | ␉bzero(&_DATA__bss__begin, (&_DATA__bss__end - &_DATA__bss__begin));␊ |
| 75 | ␉bzero(&_DATA__common__begin, (&_DATA__common__end - &_DATA__common__begin));␊ |
| 76 | }␊ |
| 77 | ␊ |
| 78 | //==========================================================================␊ |
| 79 | // Malloc error function␊ |
| 80 | ␊ |
| 81 | static void malloc_error(char *addr, size_t size, const char *file, int line)␊ |
| 82 | {␊ |
| 83 | ␉printf("\nMemory allocation error! Addr=0x%x, Size=0x%x, File=%s, Line=%d\n", (unsigned)addr, (unsigned)size, file, line);␊ |
| 84 | ␉while(1);␊ |
| 85 | }␊ |
| 86 | ␊ |
| 87 | //==========================================================================␊ |
| 88 | //Initializes the runtime. Right now this means zeroing the BSS and initializing malloc.␊ |
| 89 | //␊ |
| 90 | void initialize_runtime(void)␊ |
| 91 | {␊ |
| 92 | ␉zeroBSS();␊ |
| 93 | ␉malloc_init((void*)ZALLOC_ADDR, ZALLOC_LEN, 16384, malloc_error);␊ |
| 94 | }␊ |
| 95 | ␊ |
| 96 | //==========================================================================␊ |
| 97 | // The 'main' function for the booter. Called by boot0 when booting␊ |
| 98 | // from a block device, or by the network booter.␊ |
| 99 | //␊ |
| 100 | // arguments:␊ |
| 101 | // biosdev - Value passed from boot1/NBP to specify the device␊ |
| 102 | // that the booter was loaded from.␊ |
| 103 | void common_boot(int biosdev)␊ |
| 104 | {␊ |
| 105 | video_mode( 2 ); // 80x25 mono text mode.␊ |
| 106 | ␊ |
| 107 | ␉// Intialize module system ␊ |
| 108 | ␉init_module_system();␊ |
| 109 | ␊ |
| 110 | int loopCount = 0;␊ |
| 111 | while(1)␊ |
| 112 | {␊ |
| 113 | execute_hook("WorkLoop", (void*)loopCount++, 0, 0, 0);␉// Main work loop␊ |
| 114 | }␊ |
| 115 | }␊ |
| 116 | ␊ |
| 117 | //==========================================================================␊ |
| 118 | // This is the entrypoint from real.␊ |
| 119 | void boot(int biosdev)␊ |
| 120 | {␊ |
| 121 | ␉initialize_runtime();␊ |
| 122 | ␉// Enable A20 gate before accessing memory above 1Mb.␊ |
| 123 | ␉enableA20();␊ |
| 124 | ␉common_boot(biosdev);␊ |
| 125 | }␊ |
| 126 | |
