1 /* $NetBSD: autoconf.c,v 1.19 2011/06/18 06:44:28 matt 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 1.19 2011/06/18 06:44:28 matt 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", &local_plb_devs) == NULL) 72 panic("configure: plb not configured"); 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(device_t dev, void *aux) 95 { 96 device_t 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", device_xname(dev)); 107 } 108 prop_object_release(pn); 109 return; 110 } 111 112 ibm4xx_device_register(dev, aux); 113 } 114