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83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
/* $NetBSD: inkernel.c,v 1.9 2008/04/28 20:23:33 martin 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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*
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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(u_long ladr)
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{
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extern char _start[], _edata[];
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char *p = (char *)(ladr + (_edata - _start));
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u_int i;
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for (i = 0; i < 4096; i++, p++) {
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if (memcmp(p, prep_magic, PREP_MAGICSIZE) == 0) {
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kern_len = *(int *)(p + PREP_MAGICSIZE);
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memmove((char *)KERNENTRY,
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p + PREP_MAGICSIZE + KERNLENSIZE, kern_len);
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return;
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}
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}
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printf("magic is not found.\n");
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}
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int
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inopen(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(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(void *devdata, int func, daddr_t blk, size_t size, void *buf,
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size_t *rsize)
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{
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memcpy(buf, (char *)KERNENTRY + ((long)blk * DEV_BSIZE), size);
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*rsize = size;
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return (0);
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}
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