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autoconf.c revision 1.1.2.2 
      1 /*	$NetBSD: autoconf.c,v 1.1.2.2 2002/12/11 06:29:26 thorpej 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/param.h>
     35 #include <sys/conf.h>
     36 #include <sys/device.h>
     37 #include <sys/systm.h>
     38 
     39 #include <powerpc/ibm4xx/dev/plbvar.h>
     40 
     41 #include <machine/dcr.h>
     42 
     43 struct device *booted_device;
     44 int booted_partition;
     45 
     46 /*
     47  * List of port-specific devices to attach to the processor local bus.
     48  */
     49 static const struct plb_dev local_plb_devs [] = {
     50 	{ "pbus", },
     51 	{ NULL }
     52 };
     53 
     54 /*
     55  * Determine device configuration for a machine.
     56  */
     57 void
     58 cpu_configure(void)
     59 {
     60 
     61 	intr_init();
     62 	calc_delayconst();
     63 
     64 	/* Make sure that timers run at CPU frequency */
     65 	mtdcr(DCR_CPC0_CR1, mfdcr(DCR_CPC0_CR1) & ~CPC0_CR1_CETE);
     66 
     67 	if (config_rootfound("plb", &local_plb_devs) == NULL)
     68 		panic("configure: plb not configured");
     69 
     70 	printf("biomask %x netmask %x ttymask %x\n", (u_short)imask[IPL_BIO],
     71 	    (u_short)imask[IPL_NET], (u_short)imask[IPL_TTY]);
     72 
     73 	(void)spl0();
     74 
     75 	/*
     76 	 * Now allow hardware interrupts.
     77 	 */
     78 	asm volatile ("wrteei 1");
     79 }
     80 
     81 /*
     82  * Setup root device.
     83  * Configure swap area.
     84  */
     85 void
     86 cpu_rootconf(void)
     87 {
     88 
     89 	setroot(booted_device, booted_partition);
     90 }
     91