130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
/* $NetBSD: bootxx.c,v 1.3 1995/02/22 08:18:19 mycroft Exp $ */
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/*
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* Copyright (c) 1994 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/time.h>
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#include <a.out.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include "defs.h"
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int debug;
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int netif_debug;
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/*
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* Boot device is derived from ROM provided information.
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*/
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#define LOADADDR 0x4000
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extern struct promvec *promvec;
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struct open_file io;
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char sblock[SBSIZE];
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struct fs *fs;
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#if 0
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#define MAXBLOCKNUM MINBSIZE / sizeof(daddr_t)
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#else
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#define MAXBLOCKNUM 512
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#endif
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int maxblocknum = MAXBLOCKNUM;
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daddr_t blocknum[MAXBLOCKNUM] = { 0 };
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main(pp)
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struct promvec *pp;
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{
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char *dummy;
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int n;
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io.f_flags = F_RAW;
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if (devopen(&io, 0, &dummy)) {
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printf("Can't open device\n");
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_rtt();
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}
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if ((io.f_dev->dv_strategy)(io.f_devdata, F_READ,
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btodb(SBOFF), SBSIZE,
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sblock, &n) || n != SBSIZE) {
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printf("Can't read superblock\n");
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_rtt();
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}
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fs = (struct fs *)sblock;
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(void)copyboot(&io, LOADADDR);
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_rtt();
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}
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int
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copyboot(f, addr)
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register struct open_file *f;
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register char *addr;
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{
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int n, i;
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daddr_t blk;
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void (*entry)() = (void (*)())addr;
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addr -= sizeof(struct exec); /* XXX */
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for (i = 0; i < MAXBLOCKNUM; i++) {
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if ((blk = blocknum[i]) == 0)
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break;
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#ifdef DEBUG
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printf("bootxx: block # %d = %d\n", i, blk);
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#endif
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if ((f->f_dev->dv_strategy)(f->f_devdata, F_READ,
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fsbtodb(fs, blk), fs->fs_bsize,
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addr, &n)) {
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printf("Read failure\n");
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return -1;
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}
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if (n != fs->fs_bsize) {
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printf("Short read\n");
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return -1;
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}
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addr += fs->fs_bsize;
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}
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if (blk != 0) {
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printf("File too long\n");
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return -1;
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}
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#ifdef DEBUG
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printf("bootxx: start 0x%x\n", (int)entry);
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#endif
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(*entry)(promvec);
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return 0;
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}
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_rtt()
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{
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promvec->pv_halt();
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}
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