1 /* $NetBSD: inkernel.c,v 1.9 2009/03/18 10:22:27 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Kazuki Sakamoto. 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 <lib/libsa/stand.h> 33 #include <sys/param.h> 34 #include "boot.h" 35 #include "magic.h" 36 37 #define KERNENTRY (RELOC - 0x200000) 38 39 int inopen(struct open_file *); 40 int inclose(struct open_file *); 41 int instrategy(void *, int, daddr_t, size_t, void *, size_t *); 42 43 void 44 init_in(void) 45 { 46 int p; 47 48 for (p = endaddr(); p < KERNENTRY; p += sizeof (int)) { 49 if (*(int *)p != BEBOX_ENTRY || 50 *(int *)(p + sizeof (int)) != 0 || 51 *(int *)(p + sizeof (int) * 2) != 0) 52 continue; 53 54 p += sizeof (int) * 3; 55 if (memcmp((char *)p, bebox_magic, BEBOX_MAGICSIZE) == 0) { 56 kern_len = *(int *)(p + BEBOX_MAGICSIZE); 57 memcpy((char *)KERNENTRY, 58 (char *)(p + BEBOX_MAGICSIZE + KERNLENSIZE), 59 kern_len); 60 break; 61 } 62 } 63 } 64 65 int 66 inopen(struct open_file *p) 67 { 68 69 if (kern_len) 70 return (0); 71 return (EINVAL); 72 } 73 74 int 75 inclose(struct open_file *p) 76 { 77 78 return (0); 79 } 80 81 int 82 instrategy(void *devdata, int func, daddr_t blk, size_t size, void *buf, 83 size_t *rsize) 84 { 85 86 memcpy(buf, (char *)KERNENTRY + blk * DEV_BSIZE, size); 87 *rsize = size; 88 return (0); 89 } 90