NetBSD/sys/arch/sparc/stand/bootxx.c

130 lines
3.3 KiB
C

/* $NetBSD: bootxx.c,v 1.3 1995/02/22 08:18:19 mycroft 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();
}