1/* $NetBSD: bootinfo.c,v 1.2 2006/07/13 20:03:34 uwe Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jonathan Stone, Michael Hitch and Simon Burge. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/param.h> 33#include <machine/types.h> 34#include <machine/bootinfo.h> 35#include <lib/libsa/stand.h> 36#include <lib/libkern/libkern.h> 37 38#include "boot.h" 39 40static char *bootinfo = NULL; 41static char *bi_next; 42static int bi_size; 43 44u_long 45bi_init(u_long addr) 46{ 47 struct btinfo_common *bi; 48 struct btinfo_magic bi_magic; 49 uint64_t *endp; 50 51 endp = (uint64_t *)ALIGN(addr); 52 53 /* 54 * Allocate and zero-fill bootinfo structure. 55 */ 56 sparc64_memset(endp, 0, BOOTINFO_SIZE); 57 58 /* 59 * For the first word we load our end address, 60 * giving enough space for the bootinfo structure. 61 */ 62 endp[0] = (uint64_t)(u_long)((char *)endp + BOOTINFO_SIZE); 63 bootinfo = (char *)ALIGN(&endp[2]); 64 endp[1] = (uint64_t)(u_long)bootinfo; 65 bi = (struct btinfo_common *)bootinfo; 66 bi->next = bi->type = 0; 67 bi_next = bootinfo; 68 bi_size = 0; 69 70 bi_magic.magic = BOOTINFO_MAGIC; 71 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic)); 72 return (u_long) endp; 73} 74 75void 76bi_add(void *new, int type, size_t size) 77{ 78 struct btinfo_common *bi; 79 80 if (bi_size + size > BOOTINFO_SIZE) 81 return; /* XXX error? */ 82 83 bi = new; 84 bi->next = ALIGN(size); 85 bi->type = type; 86 sparc64_memcpy(bi_next, new, size); 87 bi_next += ALIGN(size); 88 89 bi = (struct btinfo_common *)bi_next; 90 bi->next = bi->type = 0; 91} 92