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autoconf.c revision 1.2 
      1 /*	$NetBSD: autoconf.c,v 1.2 2024/01/24 21:53:34 jmcneill Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      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. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)autoconf.c	7.1 (Berkeley) 5/9/91
     35  */
     36 
     37 /*
     38  * Setup the system to run on the current machine.
     39  *
     40  * Configure() is called at boot time and initializes the vba
     41  * device tables and the memory controller monitoring.  Available
     42  * devices are determined (from possibilities mentioned in ioconf.c),
     43  * and the drivers are initialized.
     44  */
     45 
     46 #include <sys/cdefs.h>
     47 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.2 2024/01/24 21:53:34 jmcneill Exp $");
     48 
     49 #include <sys/param.h>
     50 #include <sys/systm.h>
     51 #include <sys/buf.h>
     52 #include <sys/disklabel.h>
     53 #include <sys/conf.h>
     54 #include <sys/reboot.h>
     55 #include <sys/device.h>
     56 #include <sys/boot_flag.h>
     57 
     58 #include <powerpc/pte.h>
     59 
     60 #include <machine/wii.h>
     61 
     62 void findroot(void);
     63 void disable_intr(void);
     64 void enable_intr(void);
     65 
     66 static void parse_cmdline(void);
     67 
     68 /*
     69  * Determine i/o configuration for a machine.
     70  */
     71 void
     72 cpu_configure(void)
     73 {
     74 	parse_cmdline();
     75 
     76 	if (config_rootfound("mainbus", NULL) == NULL)
     77 		panic("configure: mainbus not configured");
     78 
     79 	genppc_cpu_configure();
     80 }
     81 
     82 void
     83 cpu_rootconf(void)
     84 {
     85 	findroot();
     86 
     87 	printf("boot device: %s\n",
     88 	    booted_device ? device_xname(booted_device) : "<unknown>");
     89 
     90 	rootconf();
     91 }
     92 
     93 void
     94 findroot(void)
     95 {
     96 }
     97 
     98 void
     99 device_register(device_t dev, void *aux)
    100 {
    101 	if (bootspec != NULL && strcmp(device_xname(dev), bootspec) == 0) {
    102 		booted_device = dev;
    103 		booted_partition = 0;
    104 	}
    105 }
    106 
    107 static void
    108 parse_cmdline(void)
    109 {
    110 	static char bootspec_buf[64];
    111 	extern char wii_cmdline[];
    112 	const char *cmdline = wii_cmdline;
    113 
    114 	while (*cmdline != '\0') {
    115 		const char *cp = cmdline;
    116 
    117 		if (*cp == '-') {
    118 			for (cp++; *cp != '\0'; cp++) {
    119 				BOOT_FLAG(*cp, boothowto);
    120 			}
    121 		} else if (strncmp(cp, "root=", 5) == 0) {
    122 			snprintf(bootspec_buf, sizeof(bootspec_buf), "%s",
    123 			    cp + 5);
    124 			if (bootspec_buf[0] != '\0') {
    125 				bootspec = bootspec_buf;
    126 				booted_method = "bootinfo/rootdevice";
    127 			}
    128 		}
    129 
    130 		cmdline += strlen(cmdline) + 1;
    131 	}
    132 }
    133