132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/* $NetBSD: bootxx.c,v 1.2 1994/11/20 20:54:53 deraadt Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Paul Kranenburg
|
|
* 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 Paul Kranenburg.
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <a.out.h>
|
|
#include <ufs/ufs/dinode.h>
|
|
#include <ufs/ffs/fs.h>
|
|
|
|
#include "defs.h"
|
|
|
|
int debug;
|
|
int netif_debug;
|
|
|
|
/*
|
|
* Boot device is derived from ROM provided information.
|
|
*/
|
|
#define LOADADDR 0x4000
|
|
extern struct promvec *promvec;
|
|
struct open_file io;
|
|
char sblock[SBSIZE];
|
|
struct fs *fs;
|
|
|
|
#if 0
|
|
#define MAXBLOCKNUM MINBSIZE / sizeof(daddr_t)
|
|
#else
|
|
#define MAXBLOCKNUM 512
|
|
#endif
|
|
int maxblocknum = MAXBLOCKNUM;
|
|
daddr_t blocknum[MAXBLOCKNUM] = { 0 };
|
|
|
|
main(pp)
|
|
struct promvec *pp;
|
|
{
|
|
char *dummy;
|
|
int n;
|
|
|
|
io.f_flags = F_RAW;
|
|
if (devopen(&io, 0, &dummy)) {
|
|
printf("Can't open device\n");
|
|
_rtt();
|
|
}
|
|
|
|
if ((io.f_dev->dv_strategy)(io.f_devdata, F_READ,
|
|
btodb(SBOFF), SBSIZE,
|
|
sblock, &n) || n != SBSIZE) {
|
|
printf("Can't read superblock\n");
|
|
_rtt();
|
|
}
|
|
fs = (struct fs *)sblock;
|
|
|
|
(void)copyboot(&io, LOADADDR);
|
|
_rtt();
|
|
}
|
|
|
|
int
|
|
copyboot(f, addr)
|
|
register struct open_file *f;
|
|
register char *addr;
|
|
{
|
|
int n, i;
|
|
daddr_t blk;
|
|
void (*entry)() = (void (*)())addr;
|
|
|
|
addr -= sizeof(struct exec); /* XXX */
|
|
|
|
for (i = 0; i < MAXBLOCKNUM; i++) {
|
|
if ((blk = blocknum[i]) == 0)
|
|
break;
|
|
#ifdef DEBUG
|
|
printf("bootxx: block # %d = %d\n", i, blk);
|
|
#endif
|
|
if ((f->f_dev->dv_strategy)(f->f_devdata, F_READ,
|
|
fsbtodb(fs, blk), fs->fs_bsize,
|
|
addr, &n)) {
|
|
printf("Read failure\n");
|
|
return -1;
|
|
}
|
|
if (n != fs->fs_bsize) {
|
|
printf("Short read\n");
|
|
return -1;
|
|
}
|
|
addr += fs->fs_bsize;
|
|
}
|
|
if (blk != 0) {
|
|
printf("File too long\n");
|
|
return -1;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
printf("bootxx: start 0x%x\n", (int)entry);
|
|
#endif
|
|
(*entry)(promvec);
|
|
return 0;
|
|
}
|
|
|
|
_rtt()
|
|
{
|
|
promvec->pv_halt();
|
|
}
|
|
|
|
twiddle() {}
|