1 /* $NetBSD: inkernel.c,v 1.9 2008/04/28 20:23:33 martin 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 35 #include "boot.h" 36 #include "magic.h" 37 38 #define KERNENTRY (RELOC - 0x200000) 39 40 void 41 init_in(u_long ladr) 42 { 43 extern char _start[], _edata[]; 44 char *p = (char *)(ladr + (_edata - _start)); 45 u_int i; 46 47 for (i = 0; i < 4096; i++, p++) { 48 if (memcmp(p, prep_magic, PREP_MAGICSIZE) == 0) { 49 kern_len = *(int *)(p + PREP_MAGICSIZE); 50 memmove((char *)KERNENTRY, 51 p + PREP_MAGICSIZE + KERNLENSIZE, kern_len); 52 return; 53 } 54 } 55 printf("magic is not found.\n"); 56 } 57 58 int 59 inopen(struct open_file *p) 60 { 61 62 if (kern_len) 63 return (0); 64 return (EINVAL); 65 } 66 67 int 68 inclose(struct open_file *p) 69 { 70 71 return (0); 72 } 73 74 int 75 instrategy(void *devdata, int func, daddr_t blk, size_t size, void *buf, 76 size_t *rsize) 77 { 78 79 memcpy(buf, (char *)KERNENTRY + ((long)blk * DEV_BSIZE), size); 80 *rsize = size; 81 return (0); 82 } 83