/* $NetBSD: xxboot.h,v 1.5 2003/05/23 21:56:37 leo Exp $ */ /* * Copyright (c) 1995 Waldi Ravens * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Waldi Ravens. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #define BIOS 13 #define Bconin 0x02 #define Bconout 0x03 #define Kbshift 0x0b #define XBIOS 14 #define Floprd 0x08 #define DMAread 0x2a #define NVMaccess 0x2e #define _membot 0x0432 #define _memtop 0x0436 #define flock 0x043e #define _bootdev 0x0446 #define _v_bas_ad 0x044e #define _hz_200 0x04ba #define _drvbits 0x04c2 #define _sysbase 0x04f2 #define pun_ptr 0x0516 #define daccess 0x8604 #define dmodus 0x8606 #define dmahi 0x8609 #define gpip 0xfa01 #define rtcrnr 0x8961 #define rtcdat 0x8963 #define BOOTPREF 15 #define idesdh 0xfff00019 #define idedor 0xfff00005 #define idedr 0xfff00000 #define idecr 0xfff0001d #define idesr 0xfff0001d #define idesc 0xfff00009 #define idesn 0xfff0000d #define idecl 0xfff00011 #define idech 0xfff00015 /* * Boot block format (16 * 512 bytes) * * - first-stage loader : 512 bytes * - magic number : 4 bytes * - disk pack label : 1020 bytes * - second-stage loader: 6656 bytes * * The boot code in ROM loads the first-stage loader, which * in turn loads the remaining 15 sectors and executes the * second-stage loader, which runs at address LOADADDR. */ #define NSEC 15 #define LBLSZ 1020 #define BXXSZ 6656 #define BXXST (LOADADDR) #define LBLST (BXXST-LBLSZ) /* * Miminum/maximum value for the top/bottom of the memory area * provided by the BIOS. The 1MB minimum memory limit is enough * to load a NetBSD kernel, not to run it. ;-) However, memory * reserved by the BIOS is not available to the boot loaders, * but will be claimed by the NetBSD kernel. */ #define MAXBOT (LBLST-4) #define MINTOP (MAXBOT+0x100000) |