98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/* $NetBSD: inkernel.c,v 1.6 2005/12/11 12:17:04 christos Exp $ */
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/*-
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* Copyright (c) 1996, 1997 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 Kazuki Sakamoto.
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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 <lib/libsa/stand.h>
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#include <sys/param.h>
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#include "boot.h"
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#include "magic.h"
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#define KERNENTRY (RELOC - 0x200000)
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void
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init_in()
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{
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int p;
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for (p = endaddr(); p < KERNENTRY; p += sizeof (int)) {
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if (*(int *)p != ENTRY ||
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*(int *)(p + sizeof (int)) != 0 ||
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*(int *)(p + sizeof (int) * 2) != 0)
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continue;
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p += sizeof (int) * 3;
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if (memcmp((char *)p, magic, MAGICSIZE) == 0) {
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kern_len = *(int *)(p + MAGICSIZE);
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memcpy((char *)KERNENTRY,
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(char *)(p + MAGICSIZE + KERNLENSIZE),
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kern_len);
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break;
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}
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}
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}
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int
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inopen(p)
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struct open_file *p;
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{
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if (kern_len)
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return (0);
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return (EINVAL);
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}
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int
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inclose(p)
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struct open_file *p;
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{
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return (0);
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}
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int
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instrategy(devdata, func, blk, size, buf, rsize)
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void *devdata; /* device uniq data */
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int func; /* function (read or write) */
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daddr_t blk; /* block number */
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size_t size; /* request size in bytes */
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void *buf; /* buffer */
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size_t *rsize; /* bytes transferred */
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{
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memcpy(buf, (char *)KERNENTRY + blk * DEV_BSIZE, size);
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*rsize = size;
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return (0);
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}
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