Annotation of sys/arch/aviion/aviion/autoconf.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: autoconf.c,v 1.5 2007/06/15 01:19:06 deraadt Exp $ */
! 2: /*
! 3: * Copyright (c) 1998 Steve Murphree, Jr.
! 4: * Copyright (c) 1996 Nivas Madhur
! 5: * Copyright (c) 1994 Christian E. Hopps
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by Christian E. Hopps.
! 19: * 4. The name of the author may not be used to endorse or promote products
! 20: * derived from this software without specific prior written permission
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: *
! 33: */
! 34: #include <sys/param.h>
! 35: #include <sys/systm.h>
! 36: #include <sys/buf.h>
! 37: #include <sys/dkstat.h>
! 38: #include <sys/reboot.h>
! 39: #include <sys/conf.h>
! 40: #include <sys/device.h>
! 41: #include <sys/disklabel.h>
! 42: #include <sys/kernel.h>
! 43:
! 44: #include <machine/asm_macro.h>
! 45: #include <machine/autoconf.h>
! 46: #include <machine/cpu.h>
! 47: #include <machine/vmparam.h>
! 48:
! 49: #include <scsi/scsi_all.h>
! 50: #include <scsi/scsiconf.h>
! 51:
! 52: #include <dev/cons.h>
! 53:
! 54: /*
! 55: * The following several variables are related to
! 56: * the configuration process, and are used in initializing
! 57: * the machine.
! 58: */
! 59:
! 60: void dumpconf(void);
! 61:
! 62: int cold = 1; /* 1 if still booting */
! 63:
! 64: struct device *bootdv; /* set by device drivers (if found) */
! 65:
! 66: u_int bootdevtype;
! 67:
! 68: #define BT_CIEN 0x6369656e
! 69: #define BT_DGEN 0x6467656e
! 70: #define BT_HKEN 0x686b656e
! 71: #define BT_INEN 0x696e656e
! 72: #define BT_INSC 0x696e7363
! 73: #define BT_NCSC 0x6e637363
! 74:
! 75: /*
! 76: * called at boot time, configure all devices on the system.
! 77: */
! 78: void
! 79: cpu_configure()
! 80: {
! 81: printf("bootpath: '%s' dev %u unit %u part %u\n",
! 82: bootargs, bootdev, bootunit, bootpart);
! 83:
! 84: if (config_rootfound("mainbus", "mainbus") == 0)
! 85: panic("no mainbus found");
! 86:
! 87: /*
! 88: * Turn external interrupts on.
! 89: */
! 90: set_psr(get_psr() & ~PSR_IND);
! 91: spl0();
! 92: cold = 0;
! 93: }
! 94:
! 95: void
! 96: diskconf(void)
! 97: {
! 98: printf("boot device: %s\n",
! 99: (bootdv) ? bootdv->dv_xname : "<unknown>");
! 100:
! 101: setroot(bootdv, bootpart, RB_USERREQ);
! 102: dumpconf();
! 103:
! 104: }
! 105:
! 106: /*
! 107: * Parse the commandline.
! 108: *
! 109: * This has two goals: first, turn the necessary options into boothowto
! 110: * flags; second, convert the PROM boot device into the matching OpenBSD
! 111: * driver name.
! 112: */
! 113:
! 114: static char *stws(char *);
! 115: static char *
! 116: stws(char *p)
! 117: {
! 118: while (*p != ' ' && *p != '\0')
! 119: p++;
! 120:
! 121: while (*p == ' ')
! 122: p++;
! 123:
! 124: return (p);
! 125: }
! 126:
! 127: void
! 128: cmdline_parse(void)
! 129: {
! 130: char *p;
! 131:
! 132: /*
! 133: * Skip boot device ``foo(ctrl,dev,lun)'' and filename,
! 134: * i.e. eat everything until whitespace.
! 135: */
! 136: p = stws(bootargs);
! 137: while (*p != '\0') {
! 138: if (*p++ == '-')
! 139: switch (*p) {
! 140: case 'a':
! 141: boothowto |= RB_ASKNAME;
! 142: break;
! 143: case 'b':
! 144: boothowto |= RB_KDB;
! 145: break;
! 146: case 'c':
! 147: boothowto |= RB_CONFIG;
! 148: break;
! 149: case 's':
! 150: boothowto |= RB_SINGLE;
! 151: break;
! 152: }
! 153: p = stws(p);
! 154: }
! 155:
! 156: /*
! 157: * Now parse the boot device. We are only interested in the
! 158: * device type, since the PROM has cracked the controller, unit
! 159: * and partition numbers for us already, and we do not care about
! 160: * our own filename...
! 161: *
! 162: * Actually we rely upon the fact that all device strings are
! 163: * exactly 4 characters long, and appears at the beginning of the
! 164: * commandline, so we can simply use its numerical value, as a
! 165: * word, to tell device types apart.
! 166: */
! 167: bootdevtype = *(int *)bootargs;
! 168: }
! 169:
! 170: void
! 171: device_register(struct device *dev, void *aux)
! 172: {
! 173: if (bootdv != NULL)
! 174: return;
! 175:
! 176: switch (bootdevtype) {
! 177: case BT_INEN:
! 178: /*
! 179: * Internal ethernet is le at syscon only, and we do not
! 180: * care about controller and unit numbers.
! 181: */
! 182: if (strncmp("le", dev->dv_xname, 2) == 0 &&
! 183: strncmp("syscon", dev->dv_parent->dv_xname, 6) == 0)
! 184: bootdv = dev;
! 185: break;
! 186: }
! 187: }
! 188:
! 189: struct nam2blk nam2blk[] = {
! 190: { "sd", 4 },
! 191: { "cd", 6 },
! 192: { "rd", 7 },
! 193: { NULL, -1 }
! 194: };
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