1 /* $NetBSD: inkernel.c,v 1.1 2000/02/29 15:21:51 nonaka 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 #ifndef HEAD_SIZE 48 #define HEAD_SIZE 0 49 #endif 50 51 #ifndef KERN_OFFSET 52 #define KERN_OFFSET 0 53 #endif 54 55 u_long head_size = HEAD_SIZE; 56 u_long kern_offset = KERN_OFFSET; 57 58 void 59 init_in() 60 { 61 extern u_long ladr; 62 u_long p = ladr + kern_offset - head_size; 63 64 if (memcmp((char *)p, magic, MAGICSIZE) == 0) { 65 kern_len = *(int *)(p + MAGICSIZE); 66 memcpy((char *)KERNENTRY, 67 (char *)(p + MAGICSIZE + KERNLENSIZE), 68 kern_len); 69 } else 70 printf("magic not found.\n"); 71 } 72 73 int 74 inopen(p) 75 struct open_file *p; 76 { 77 78 if (kern_len) 79 return (0); 80 return (EINVAL); 81 } 82 83 int 84 inclose(p) 85 struct open_file *p; 86 { 87 return (0); 88 } 89 90 int 91 instrategy(devdata, func, blk, size, buf, rsize) 92 void *devdata; /* device uniq data */ 93 int func; /* function (read or write) */ 94 daddr_t blk; /* block number */ 95 size_t size; /* request size in bytes */ 96 void *buf; /* buffer */ 97 size_t *rsize; /* bytes transferred */ 98 { 99 100 memcpy(buf, (char *)(KERNENTRY + blk * DEV_BSIZE), size); 101 *rsize = size; 102 return (0); 103 } 104