1 /* $NetBSD: inkernel.c,v 1.6 2006/04/10 18:40:06 garbled 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <lib/libsa/stand.h> 40 #include <sys/param.h> 41 42 #include "boot.h" 43 #include "magic.h" 44 45 #define KERNENTRY (RELOC - 0x200000) 46 47 void 48 init_in(u_long ladr) 49 { 50 extern char _start[], _edata[]; 51 char *p = (char *)(ladr + (_edata - _start)); 52 u_int i; 53 54 for (i = 0; i < 4096; i++, p++) { 55 if (memcmp(p, magic, MAGICSIZE) == 0) { 56 kern_len = *(int *)(p + MAGICSIZE); 57 memmove((char *)KERNENTRY, 58 p + MAGICSIZE + KERNLENSIZE, kern_len); 59 return; 60 } 61 } 62 printf("magic is not found.\n"); 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 + ((long)blk * DEV_BSIZE), size); 87 *rsize = size; 88 return (0); 89 } 90