autoconf.c revision 1.2
1 /* $NetBSD: autoconf.c,v 1.2 2026/06/16 23:37:49 rkujawa Exp $ */ 2 3 /* 4 * Copyright (c) 2012, 2014, 2024, 2026 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Radoslaw Kujawa. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Copyright 2004 Shigeyuki Fukushima. 33 * All rights reserved. 34 * 35 * Written by Shigeyuki Fukushima for The NetBSD Project. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above 43 * copyright notice, this list of conditions and the following 44 * disclaimer in the documentation and/or other materials provided 45 * with the distribution. 46 * 3. The name of the author may not be used to endorse or promote 47 * products derived from this software without specific prior 48 * written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 52 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 56 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 57 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 58 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 60 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 61 * DAMAGE. 62 */ 63 64 /* 65 * Autoconfiguration for the ACube Sam460ex (AMCC 460EX). 66 * Modeled on evbppc/obs405/obs600_autoconf.c. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.2 2026/06/16 23:37:49 rkujawa Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/intr.h> 76 #include <sys/systm.h> 77 78 #include <machine/sam460ex.h> 79 80 #include <powerpc/ibm4xx/amcc460ex.h> 81 #include <powerpc/ibm4xx/cpu.h> 82 #include <powerpc/ibm4xx/dcr4xx.h> 83 84 /* 85 * Determine device configuration for a machine. 86 */ 87 void 88 cpu_configure(void) 89 { 90 91 /* UIC */ 92 mtdcr(DCR_UIC1_BASE + DCR_UIC_PR, 93 mfdcr(DCR_UIC1_BASE + DCR_UIC_PR) & ~0x80000000); 94 mtdcr(DCR_UIC1_BASE + DCR_UIC_TR, 95 mfdcr(DCR_UIC1_BASE + DCR_UIC_TR) & ~0x80000000); 96 mtdcr(DCR_UIC1_BASE + DCR_UIC_SR, 0x80000000); 97 mtdcr(DCR_UIC3_BASE + DCR_UIC_PR, 98 mfdcr(DCR_UIC3_BASE + DCR_UIC_PR) & ~0x000ff000); 99 mtdcr(DCR_UIC3_BASE + DCR_UIC_TR, 100 mfdcr(DCR_UIC3_BASE + DCR_UIC_TR) & ~0x000ff000); 101 mtdcr(DCR_UIC3_BASE + DCR_UIC_SR, 0x000ff000); 102 103 /* 104 * Initialize intr and add the cascaded UICs. 105 * UIC0 = 0, UIC1 = +32, UIC2 = +64, UIC3 = +96. 106 */ 107 intr_init(); 108 pic_add(&pic_uic1); 109 pic_add(&pic_uic2); 110 pic_add(&pic_uic3); 111 112 if (config_rootfound("plb", NULL) == NULL) 113 panic("configure: mainbus not configured"); 114 115 pic_finish_setup(); 116 117 genppc_cpu_configure(); 118 } 119 120 void 121 device_register(device_t dev, void *aux) 122 { 123 124 ibm4xx_device_register(dev, aux, sam460ex_com_freq()); 125 126 /* "console=fb" in bootargs: the SM502 wsdisplay becomes console */ 127 if (sam460ex_console_fb && device_is_a(dev, "voyagerfb")) 128 prop_dictionary_set_bool(device_properties(dev), 129 "is_console", true); 130 131 /* 132 * Match a "root=" from the bootargs. 133 */ 134 if (bootspec != NULL) { 135 size_t len = strlen(bootspec); 136 int part = 0; 137 138 if (len > 1 && bootspec[len - 1] >= 'a' && 139 bootspec[len - 1] < 'a' + MAXPARTITIONS && 140 bootspec[len - 2] >= '0' && bootspec[len - 2] <= '9') { 141 part = bootspec[len - 1] - 'a'; 142 len--; 143 } 144 if (strncmp(device_xname(dev), bootspec, len) == 0 && 145 device_xname(dev)[len] == '\0') { 146 booted_device = dev; 147 booted_partition = part; 148 } 149 } 150 } 151 152
Indexes created Wed Jul 08 00:27:11 UTC 2026