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autoconf.c revision 1.18 
      1 /*	$NetBSD: autoconf.c,v 1.18 2010/03/18 14:04:07 kiyohara Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      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 TooLs GmbH.
     19  * 4. The name of TooLs GmbH 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 TOOLS GMBH ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.18 2010/03/18 14:04:07 kiyohara Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/conf.h>
     39 #include <sys/device.h>
     40 #include <sys/systm.h>
     41 
     42 #include <dev/ic/comreg.h>	/* For COM_FREQ */
     43 
     44 #include <powerpc/ibm4xx/dcr4xx.h>
     45 #include <powerpc/ibm4xx/dev/plbvar.h>
     46 #include <powerpc/ibm4xx/spr.h>
     47 
     48 /*
     49  * List of port-specific devices to attach to the processor local bus.
     50  */
     51 static const struct plb_dev local_plb_devs [] = {
     52 	{ IBM405GP, "pbus", },
     53 	{ 0, NULL }
     54 };
     55 
     56 /*
     57  * Determine device configuration for a machine.
     58  */
     59 void
     60 cpu_configure(void)
     61 {
     62 
     63 	intr_init();
     64 	calc_delayconst();
     65 
     66 	/* Make sure that timers run at CPU frequency */
     67 	mtdcr(DCR_CPC0_CR1, mfdcr(DCR_CPC0_CR1) & ~CPC0_CR1_CETE);
     68 
     69 	if (config_rootfound("plb", &local_plb_devs) == NULL)
     70 		panic("configure: plb not configured");
     71 
     72 	printf("biomask %x netmask %x ttymask %x\n",
     73 	    imask[IPL_BIO], imask[IPL_NET], imask[IPL_TTY]);
     74 
     75 	(void)spl0();
     76 
     77 	/*
     78 	 * Now allow hardware interrupts.
     79 	 */
     80 	__asm volatile ("wrteei 1");
     81 }
     82 
     83 /*
     84  * Setup root device.
     85  * Configure swap area.
     86  */
     87 void
     88 cpu_rootconf(void)
     89 {
     90 
     91 	setroot(booted_device, booted_partition);
     92 }
     93 
     94 void
     95 device_register(struct device *dev, void *aux)
     96 {
     97 	struct device *parent = device_parent(dev);
     98 
     99 	if (device_is_a(dev, "com") && device_is_a(parent, "opb")) {
    100 		/* Set the frequency of the on-chip UART. */
    101 		prop_number_t pn = prop_number_create_integer(COM_FREQ * 6);
    102 		KASSERT(pn != NULL);
    103 
    104 		if (prop_dictionary_set(device_properties(dev),
    105 					"clock-frequency", pn) == false) {
    106 			printf("WARNING: unable to set clock-frequency "
    107 			    "property for %s\n", dev->dv_xname);
    108 		}
    109 		prop_object_release(pn);
    110 		return;
    111 	}
    112 
    113 	ibm4xx_device_register(dev, aux);
    114 }
    115