md_root.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: md_root.c,v 1.1.2.2 2000/11/20 11:39:47 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 bouyer * by Gordon W. Ross. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by the NetBSD 21 1.1.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.1.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.1.2.2 bouyer * from this software without specific prior written permission. 25 1.1.2.2 bouyer * 26 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 bouyer */ 38 1.1.2.2 bouyer 39 1.1.2.2 bouyer #include <sys/param.h> 40 1.1.2.2 bouyer #include <sys/systm.h> 41 1.1.2.2 bouyer #include <sys/reboot.h> 42 1.1.2.2 bouyer 43 1.1.2.2 bouyer #include <dev/md.h> 44 1.1.2.2 bouyer 45 1.1.2.2 bouyer #include "opt_mdsize.h" 46 1.1.2.2 bouyer 47 1.1.2.2 bouyer extern int boothowto; 48 1.1.2.2 bouyer 49 1.1.2.2 bouyer #ifndef MINIROOTSIZE 50 1.1.2.2 bouyer #define MINIROOTSIZE 512 51 1.1.2.2 bouyer #endif 52 1.1.2.2 bouyer 53 1.1.2.2 bouyer #define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT) 54 1.1.2.2 bouyer 55 1.1.2.2 bouyer /* 56 1.1.2.2 bouyer * This array will be patched to contain a file-system image. 57 1.1.2.2 bouyer * See the program mdsetimage(8) for details. 58 1.1.2.2 bouyer */ 59 1.1.2.2 bouyer u_int32_t md_root_size = ROOTBYTES; 60 1.1.2.2 bouyer char md_root_image[ROOTBYTES] = "|This is the root ramdisk!\n"; 61 1.1.2.2 bouyer 62 1.1.2.2 bouyer /* 63 1.1.2.2 bouyer * This is called during pseudo-device attachment. 64 1.1.2.2 bouyer */ 65 1.1.2.2 bouyer void 66 1.1.2.2 bouyer md_attach_hook(unit, md) 67 1.1.2.2 bouyer int unit; 68 1.1.2.2 bouyer struct md_conf *md; 69 1.1.2.2 bouyer { 70 1.1.2.2 bouyer char pbuf[9]; 71 1.1.2.2 bouyer 72 1.1.2.2 bouyer if (unit == 0) { 73 1.1.2.2 bouyer /* Setup root ramdisk */ 74 1.1.2.2 bouyer md->md_addr = (caddr_t)md_root_image; 75 1.1.2.2 bouyer md->md_size = (size_t)md_root_size; 76 1.1.2.2 bouyer md->md_type = MD_KMEM_FIXED; 77 1.1.2.2 bouyer format_bytes(pbuf, sizeof(pbuf), ROOTBYTES); 78 1.1.2.2 bouyer printf("md%d: internal %s image area\n", unit, pbuf); 79 1.1.2.2 bouyer } 80 1.1.2.2 bouyer } 81 1.1.2.2 bouyer 82 1.1.2.2 bouyer /* 83 1.1.2.2 bouyer * This is called during open (i.e. mountroot) 84 1.1.2.2 bouyer */ 85 1.1.2.2 bouyer void 86 1.1.2.2 bouyer md_open_hook(unit, md) 87 1.1.2.2 bouyer int unit; 88 1.1.2.2 bouyer struct md_conf *md; 89 1.1.2.2 bouyer { 90 1.1.2.2 bouyer 91 1.1.2.2 bouyer if (unit == 0) { 92 1.1.2.2 bouyer /* The root ramdisk only works single-user. */ 93 1.1.2.2 bouyer boothowto |= RB_SINGLE; 94 1.1.2.2 bouyer } 95 1.1.2.2 bouyer } 96
Indexes created Tue Sep 30 11:09:46 GMT 2025