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81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* $NetBSD: bootinfo.c,v 1.4 2008/04/28 20:23:13 martin Exp $ */
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/*-
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* Copyright (c) 1999 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 Jonathan Stone, Michael Hitch and Simon Burge.
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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 <machine/types.h>
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#include <lib/libsa/stand.h>
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#include <lib/libkern/libkern.h>
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#include "bootinfo.h"
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struct btinfo_common *bootinfo; /* bootinfo address */
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static char *bi_next; /* pointer to next bootinfo data */
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static int bi_size; /* current bootinfo size */
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void
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bi_init(void *bi_addr)
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{
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struct btinfo_magic bi_magic;
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bootinfo = bi_addr;
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bootinfo->next = 0;
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bootinfo->type = BTINFO_NONE;
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bi_next = (void *)bootinfo;
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bi_size = 0;
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bi_magic.magic = BOOTINFO_MAGIC;
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bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic));
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}
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void
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bi_add(void *new, int type, size_t size)
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{
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struct btinfo_common *bi;
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if (bi_size + size > BOOTINFO_SIZE)
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return; /* XXX should report error? */
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bi_size += size;
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/* register new bootinfo data */
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memcpy(bi_next, new, size);
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bi = (void *)bi_next;
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bi->next = size;
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bi->type = type;
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/* update pointer to next bootinfo data */
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bi_next += size;
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bi = (void *)bi_next;
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bi->next = 0;
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bi->type = BTINFO_NONE;
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}
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