sys/arch/evbppc/walnut/autoconf.c

   1 /*      $NetBSD: autoconf.c,v 1.16 2006/10/07 14:59:53 tsutsui 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 1.16 2006/10/07 14:59:53 tsutsui 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/dcr405gp.h>
  45 #include <powerpc/ibm4xx/dev/plbvar.h>
  46
  47 /*
  48  * List of port-specific devices to attach to the processor local bus.
  49  */
  50 static const struct plb_dev local_plb_devs [] = {
  51         { "pbus", },
  52         { NULL }
  53 };
  54
  55 /*
  56  * Determine device configuration for a machine.
  57  */
  58 void
  59 cpu_configure(void)
  60 {
  61
  62         intr_init();
  63         calc_delayconst();
  64
  65         /* Make sure that timers run at CPU frequency */
  66         mtdcr(DCR_CPC0_CR1, mfdcr(DCR_CPC0_CR1) & ~CPC0_CR1_CETE);
  67
  68         if (config_rootfound("plb", &local_plb_devs) == NULL)
  69                 panic("configure: plb not configured");
  70
  71         printf("biomask %x netmask %x ttymask %x\n",
  72             imask[IPL_BIO], imask[IPL_NET], imask[IPL_TTY]);
  73
  74         (void)spl0();
  75
  76         /*
  77          * Now allow hardware interrupts.
  78          */
  79         __asm volatile ("wrteei 1");
  80 }
  81
  82 /*
  83  * Setup root device.
  84  * Configure swap area.
  85  */
  86 void
  87 cpu_rootconf(void)
  88 {
  89
  90         setroot(booted_device, booted_partition);
  91 }
  92
  93 void
  94 device_register(struct device *dev, void *aux)
  95 {
  96         struct device *parent = device_parent(dev);
  97
  98         if (device_is_a(dev, "com") && device_is_a(parent, "opb")) {
  99                 /* Set the frequency of the on-chip UART. */
 100                 prop_number_t pn = prop_number_create_integer(COM_FREQ * 6);
 101                 KASSERT(pn != NULL);
 102
 103                 if (prop_dictionary_set(device_properties(dev),
 104                                         "clock-frequency", pn) == false) {
 105                         printf("WARNING: unable to set clock-frequency "
 106                             "property for %s\n", dev->dv_xname);
 107                 }
 108                 prop_object_release(pn);
 109                 return;
 110         }
 111
 112         ibm4xx_device_register(dev, aux);
 113 }