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