Return to rd.c CVS log

Up to [local] / sys / dev

Annotation of sys/dev/rd.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: rd.c,v 1.1 2001/05/11 07:04:47 deraadt Exp $  */
                      2:
                      3: /*
                      4:  * Copyright (c) 1995 Gordon W. Ross
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. The name of the author may not be used to endorse or promote products
                     16:  *    derived from this software without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     19:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     20:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     21:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     22:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     23:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     24:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     25:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     26:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     27:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <sys/param.h>
                     31: #include <sys/systm.h>
                     32: #include <sys/reboot.h>
                     33:
                     34: #include <dev/ramdisk.h>
                     35:
                     36: extern int boothowto;
                     37:
                     38: #ifndef MINIROOTSIZE
                     39: #define MINIROOTSIZE 512
                     40: #endif
                     41:
                     42: #define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT)
                     43:
                     44: /*
                     45:  * This array will be patched to contain a file-system image.
                     46:  * See the program:  src/distrib/common/rdsetroot.c
                     47:  */
                     48: u_int32_t rd_root_size = ROOTBYTES;
                     49: char rd_root_image[ROOTBYTES] = "|This is the root ramdisk!\n";
                     50:
                     51: /*
                     52:  * This is called during autoconfig.
                     53:  */
                     54: void
                     55: rd_attach_hook(unit, rd)
                     56:        int unit;
                     57:        struct rd_conf *rd;
                     58: {
                     59:        if (unit == 0) {
                     60:                /* Setup root ramdisk */
                     61:                rd->rd_addr = (caddr_t) rd_root_image;
                     62:                rd->rd_size = (size_t)  rd_root_size;
                     63:                rd->rd_type = RD_KMEM_FIXED;
                     64:                printf("rd%d: fixed, %d blocks\n", unit, MINIROOTSIZE);
                     65:        }
                     66: }
                     67:
                     68: /*
                     69:  * This is called during open (i.e. mountroot)
                     70:  */
                     71: void
                     72: rd_open_hook(unit, rd)
                     73:        int unit;
                     74:        struct rd_conf *rd;
                     75: {
                     76: }