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/* $OpenBSD: bootxx.c,v 1.4 2003/08/14 17:13:57 deraadt Exp $ */
/* $NetBSD: bootxx.c,v 1.2 1997/09/14 19:28:17 pk 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 <lib/libsa/stand.h>
#include <sparc/stand/common/promdev.h>
int debug;
int netif_debug;
/*
* Boot device is derived from ROM provided information.
*/
char progname[] = "bootxx";
struct open_file io;
/*
* The contents of the block_* variables below is set by installboot(8)
* to hold the the filesystem data of the second-stage boot program
* (typically `/boot'): filesystem block size, # of filesystem blocks and
* the block numbers themselves.
*/
#define MAXBLOCKNUM 256 /* enough for a 2MB boot program (bs 8K) */
int32_t block_size = 0;
int32_t block_count = MAXBLOCKNUM;
daddr_t block_table[MAXBLOCKNUM] = { 0 };
void loadboot(struct open_file *, caddr_t);
int
main(int argc, char *argv[])
{
char *dummy;
size_t n;
register void (*entry)(caddr_t) = (void (*)(caddr_t))LOADADDR;
prom_init();
io.f_flags = F_RAW;
if (devopen(&io, 0, &dummy)) {
panic("%s: can't open device", progname);
}
(void)loadboot(&io, LOADADDR);
(io.f_dev->dv_close)(&io);
(*entry)(cputyp == CPU_SUN4 ? LOADADDR : (caddr_t)promvec);
_rtt();
}
void
loadboot(f, addr)
register struct open_file *f;
register char *addr;
{
register int i;
register char *buf;
size_t n;
daddr_t blk;
/*
* Allocate a buffer that we can map into DVMA space; only
* needed for sun4 architecture, but use it for all machines
* to keep code size down as much as possible.
*/
buf = alloc(block_size);
if (buf == NULL)
panic("%s: alloc failed", progname);
for (i = 0; i < block_count; i++) {
if ((blk = block_table[i]) == 0)
panic("%s: block table corrupt", progname);
#ifdef DEBUG
printf("%s: block # %d = %d\n", progname, i, blk);
#endif
if ((f->f_dev->dv_strategy)(f->f_devdata, F_READ,
blk, block_size, buf, &n)) {
panic("%s: read failure", progname);
}
bcopy(buf, addr, block_size);
if (n != block_size)
panic("%s: short read", progname);
if (i == 0) {
register int m = N_GETMAGIC(*(struct exec *)addr);
if (m == ZMAGIC || m == NMAGIC || m == OMAGIC) {
/* Move exec header out of the way */
bcopy(addr, addr - sizeof(struct exec), n);
addr -= sizeof(struct exec);
}
}
addr += n;
}
}
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