1 /* $NetBSD: autoconf.c,v 1.2 2001/07/26 15:45:51 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1999 5 * Matthias Drochner. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/buf.h> 32 #include <sys/conf.h> 33 #include <sys/device.h> 34 #include <sys/device.h> 35 #include <sys/disklabel.h> 36 #include <sys/malloc.h> 37 #include <sys/map.h> 38 #include <sys/mount.h> 39 #include <sys/queue.h> 40 #include <sys/reboot.h> 41 #include <sys/tty.h> 42 #include <sys/kernel.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/vmparam.h> 48 #include <machine/cpu.h> 49 #include <machine/pmap.h> 50 #include <machine/pte.h> 51 52 #include <cesfic/cesfic/isr.h> 53 54 struct device *booted_device; 55 int booted_partition; 56 57 u_int bootdev; 58 59 struct evcnt evcnt_fpsp_unimp, evcnt_fpsp_unsupp; 60 61 int mainbusmatch __P((struct device *, struct cfdata *, void *)); 62 void mainbusattach __P((struct device *, struct device *, void *)); 63 int mainbussearch __P((struct device *, struct cfdata *, void *)); 64 65 struct cfattach mainbus_ca = { 66 sizeof(struct device), mainbusmatch, mainbusattach 67 }; 68 69 int 70 mainbusmatch(parent, match, aux) 71 struct device *parent; 72 struct cfdata *match; 73 void *aux; 74 { 75 static int mainbus_matched = 0; 76 77 /* Allow only one instance. */ 78 if (mainbus_matched) 79 return (0); 80 81 mainbus_matched = 1; 82 return (1); 83 } 84 85 void 86 mainbusattach(parent, self, aux) 87 struct device *parent, *self; 88 void *aux; 89 { 90 91 printf("\n"); 92 93 #ifdef FPSP /* XXX this shouldn't be here but in a "cpu" node */ 94 evcnt_attach(self, "fpuni", &evcnt_fpsp_unimp); 95 evcnt_attach(self, "fpund", &evcnt_fpsp_unsupp); 96 #endif 97 98 /* Search for and attach children. */ 99 config_search(mainbussearch, self, NULL); 100 } 101 102 int 103 mainbussearch(parent, cf, aux) 104 struct device *parent; 105 struct cfdata *cf; 106 void *aux; 107 { 108 109 if ((*cf->cf_attach->ca_match)(parent, cf, NULL) > 0) 110 config_attach(parent, cf, NULL, NULL); 111 return (0); 112 } 113 114 int 115 mainbus_map(physaddr, size, cacheable, virtaddr) 116 u_long physaddr; 117 int size; 118 int cacheable; 119 void ** virtaddr; 120 { 121 122 u_long pa, endpa; 123 vm_offset_t va; 124 125 pa = m68k_trunc_page(physaddr); 126 endpa = m68k_round_page(physaddr + size); 127 128 #ifdef DIAGNOSTIC 129 if (endpa <= pa) 130 panic("bus_mem_add_mapping: overflow"); 131 #endif 132 133 va = uvm_km_valloc(kernel_map, endpa - pa); 134 if (va == 0) 135 return (ENOMEM); 136 137 *virtaddr = (void*)(va + (physaddr & PGOFSET)); 138 for (; pa < endpa; pa += NBPG, va += NBPG) { 139 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); 140 if (!cacheable) { 141 pt_entry_t *pte = kvtopte(va); 142 *pte |= PG_CI; 143 *pte &= ~PG_CCB; 144 } 145 } 146 147 return (0); 148 } 149 150 void 151 cpu_configure() 152 { 153 154 isrinit(); 155 156 (void)splhigh(); 157 if (config_rootfound("mainbus", "mainbus") == NULL) 158 panic("no mainbus found"); 159 160 (void)spl0(); 161 cold = 0; 162 163 isrprintlevels(); 164 } 165 166 void 167 cpu_rootconf() 168 { 169 setroot(0, 0); 170 } 171