1 /* $NetBSD: inkernel.c,v 1.7 2008/04/28 20:23:15 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 #include "boot.h" 35 #include "magic.h" 36 37 #define KERNENTRY (RELOC - 0x200000) 38 39 void 40 init_in() 41 { 42 int p; 43 44 for (p = endaddr(); p < KERNENTRY; p += sizeof (int)) { 45 if (*(int *)p != ENTRY || 46 *(int *)(p + sizeof (int)) != 0 || 47 *(int *)(p + sizeof (int) * 2) != 0) 48 continue; 49 50 p += sizeof (int) * 3; 51 if (memcmp((char *)p, magic, MAGICSIZE) == 0) { 52 kern_len = *(int *)(p + MAGICSIZE); 53 memcpy((char *)KERNENTRY, 54 (char *)(p + MAGICSIZE + KERNLENSIZE), 55 kern_len); 56 break; 57 } 58 } 59 } 60 61 int 62 inopen(p) 63 struct open_file *p; 64 { 65 if (kern_len) 66 return (0); 67 return (EINVAL); 68 } 69 70 int 71 inclose(p) 72 struct open_file *p; 73 { 74 return (0); 75 } 76 77 int 78 instrategy(devdata, func, blk, size, buf, rsize) 79 void *devdata; /* device uniq data */ 80 int func; /* function (read or write) */ 81 daddr_t blk; /* block number */ 82 size_t size; /* request size in bytes */ 83 void *buf; /* buffer */ 84 size_t *rsize; /* bytes transferred */ 85 { 86 87 memcpy(buf, (char *)KERNENTRY + blk * DEV_BSIZE, size); 88 *rsize = size; 89 return (0); 90 } 91