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autoconf.c revision 1.21.12.1 
      1 /*	$NetBSD: autoconf.c,v 1.21.12.1 2014/08/10 06:53:57 tls 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 1.21.12.1 2014/08/10 06:53:57 tls Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/conf.h>
     39 #include <sys/device.h>
     40 #include <sys/systm.h>
     41 #include <sys/cpu.h>
     42 
     43 #include <dev/ic/comreg.h>	/* For COM_FREQ */
     44 
     45 #include <powerpc/ibm4xx/cpu.h>
     46 #include <powerpc/ibm4xx/dcr4xx.h>
     47 #include <powerpc/ibm4xx/dev/plbvar.h>
     48 #include <powerpc/ibm4xx/spr.h>
     49 
     50 /*
     51  * List of port-specific devices to attach to the processor local bus.
     52  */
     53 static const struct plb_dev local_plb_devs [] = {
     54 	{ IBM405GP, "pbus", },
     55 	{ 0, NULL }
     56 };
     57 
     58 /*
     59  * Determine device configuration for a machine.
     60  */
     61 void
     62 cpu_configure(void)
     63 {
     64 
     65 	intr_init();
     66 	calc_delayconst();
     67 
     68 	/* Make sure that timers run at CPU frequency */
     69 	mtdcr(DCR_CPC0_CR1, mfdcr(DCR_CPC0_CR1) & ~CPC0_CR1_CETE);
     70 
     71 	if (config_rootfound("plb", __UNCONST(&local_plb_devs)) == NULL)
     72 		panic("configure: plb not configured");
     73 
     74 	(void)spl0();
     75 }
     76 
     77 /*
     78  * Setup root device.
     79  * Configure swap area.
     80  */
     81 void
     82 cpu_rootconf(void)
     83 {
     84 
     85 	rootconf();
     86 }
     87 
     88 void
     89 device_register(device_t dev, void *aux)
     90 {
     91 	device_t parent = device_parent(dev);
     92 
     93 	if (device_is_a(dev, "com") && device_is_a(parent, "opb")) {
     94 		/* Set the frequency of the on-chip UART. */
     95 		prop_number_t pn = prop_number_create_integer(COM_FREQ * 6);
     96 		KASSERT(pn != NULL);
     97 
     98 		if (prop_dictionary_set(device_properties(dev),
     99 					"clock-frequency", pn) == false) {
    100 			printf("WARNING: unable to set clock-frequency "
    101 			    "property for %s\n", device_xname(dev));
    102 		}
    103 		prop_object_release(pn);
    104 		return;
    105 	}
    106 
    107 	ibm4xx_device_register(dev, aux);
    108 }
    109