134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/* $NetBSD: bootxx.c,v 1.3 1998/09/05 15:12:26 pk Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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 <lib/libsa/stand.h>
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#include <sparc/stand/common/promdev.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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const char progname[] = "bootxx";
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struct open_file io;
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/*
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* The contents of the block_* variables below is set by installboot(8)
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* to hold the the filesystem data of the second-stage boot program
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* (typically `/boot'): filesystem block size, # of filesystem blocks and
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* the block numbers themselves.
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*/
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#define MAXBLOCKNUM 256 /* enough for a 2MB boot program (bs 8K) */
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int32_t block_size = 0;
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int32_t block_count = MAXBLOCKNUM;
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daddr_t block_table[MAXBLOCKNUM] = { 0 };
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void loadboot __P((struct open_file *, caddr_t));
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int
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main()
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{
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char *dummy;
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size_t n;
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register void (*entry)__P((caddr_t)) = (void (*)__P((caddr_t)))LOADADDR;
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prom_init();
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io.f_flags = F_RAW;
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if (devopen(&io, 0, &dummy)) {
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panic("%s: can't open device", progname);
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}
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(void)loadboot(&io, LOADADDR);
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(io.f_dev->dv_close)(&io);
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(*entry)(cputyp == CPU_SUN4 ? LOADADDR : (caddr_t)promvec);
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_rtt();
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}
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void
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loadboot(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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register int i;
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register char *buf;
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size_t n;
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daddr_t blk;
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/*
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* Allocate a buffer that we can map into DVMA space; only
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* needed for sun4 architecture, but use it for all machines
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* to keep code size down as much as possible.
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*/
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buf = alloc(block_size);
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if (buf == NULL)
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panic("%s: alloc failed", progname);
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for (i = 0; i < block_count; i++) {
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if ((blk = block_table[i]) == 0)
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panic("%s: block table corrupt", progname);
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#ifdef DEBUG
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printf("%s: block # %d = %d\n", progname, 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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blk, block_size, buf, &n)) {
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panic("%s: read failure", progname);
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}
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bcopy(buf, addr, block_size);
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if (n != block_size)
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panic("%s: short read", progname);
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if (i == 0) {
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register int m = N_GETMAGIC(*(struct exec *)addr);
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if (m == ZMAGIC || m == NMAGIC || m == OMAGIC) {
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/* Move exec header out of the way */
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bcopy(addr, addr - sizeof(struct exec), n);
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addr -= sizeof(struct exec);
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}
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}
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addr += n;
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}
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}
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