/* $NetBSD: bootinfo_memmap.c,v 1.6.26.1 2024/09/03 15:23:40 martin Exp $ */ /* * Copyright (c) 1999 * Matthias Drochner. 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. * * 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 #include "libi386.h" #include "bootinfo.h" struct btinfo_memmap *btinfo_memmap = NULL; extern int getmementry(int *, int *); void bi_getmemmap(void) { /* * Allocate 6 words, not 5, to work around buggy firmware -- * see comment on getmementry in biosmemx.S. */ int buf[6], i, nranges, n; nranges = 0; i = 0; do { if (getmementry(&i, buf)) break; nranges++; } while (i); btinfo_memmap = alloc(sizeof(struct btinfo_memmap) + (nranges - 1) * sizeof(struct bi_memmap_entry)); i = 0; for (n = 0; n < nranges; n++) { getmementry(&i, buf); memcpy(&btinfo_memmap->entry[n], buf, sizeof(struct bi_memmap_entry)); } btinfo_memmap->num = nranges; BI_ADD(btinfo_memmap, BTINFO_MEMMAP, sizeof(struct btinfo_memmap) + (nranges - 1) * sizeof(struct bi_memmap_entry)); }