1/* $NetBSD: mainbus.c,v 1.9 2021/08/07 16:18:52 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.9 2021/08/07 16:18:52 thorpej Exp $"); 35 36#include "mainbus.h" 37#include "opt_multiprocessor.h" 38 39#include <sys/param.h> 40#include <sys/bus.h> 41#include <sys/device.h> 42#include <sys/errno.h> 43 44#include <evbppc/ev64260/ev64260.h> 45 46#include "locators.h" 47 48#if NCPU == 0 49#error A cpu device is now required 50#endif 51 52 53int mainbus_match(device_t, cfdata_t, void *); 54void mainbus_attach(device_t, device_t, void *); 55int mainbus_cfprint(void *, const char *); 56 57CFATTACH_DECL_NEW(mainbus, 0, 58 mainbus_match, mainbus_attach, NULL, NULL); 59 60/* 61 * Probe for the mainbus; always succeeds. 62 */ 63int 64mainbus_match(device_t parent, cfdata_t match, void *aux) 65{ 66 67 return 1; 68} 69 70/* 71 * Attach the mainbus. 72 */ 73void 74mainbus_attach(device_t parent, device_t self, void *aux) 75{ 76 struct mainbus_attach_args mba; 77 extern bus_addr_t gt_base; 78 79 printf("\n"); 80 81 memset(&mba, 0, sizeof(mba)); 82 83 /* 84 * Always find the CPU 85 */ 86 mba.mba_name = "cpu"; 87 mba.mba_unit = 0; 88 mba.mba_addr = MAINBUSCF_ADDR_DEFAULT; 89 config_found(self, &mba, mainbus_cfprint, CFARGS_NONE); 90 91#ifdef MULTIPROCESSOR 92 /* 93 * Try for a second one... 94 */ 95 mba.mba_name = "cpu"; 96 mba.mba_unit = 1; 97 mba.mba_addr = MAINBUSCF_ADDR_DEFAULT; 98 config_found(self, &mba, mainbus_cfprint, CFARGS_NONE); 99#endif 100 101 /* 102 * Now try to configure the Discovery 103 */ 104 mba.mba_name = "gt"; 105 mba.mba_unit = -1; 106 mba.mba_addr = gt_base; 107 config_found(self, &mba, mainbus_cfprint, CFARGS_NONE); 108} 109 110int 111mainbus_cfprint(void *aux, const char *pnp) 112{ 113 struct mainbus_attach_args *mba = aux; 114 115 if (pnp) 116 aprint_normal("%s at %s", mba->mba_name, pnp); 117 if (mba->mba_unit != -1) 118 aprint_normal(" unit %d", mba->mba_unit); 119 if (mba->mba_addr != MAINBUSCF_ADDR_DEFAULT) 120 aprint_normal(" addr 0x%08x", mba->mba_addr); 121 return UNCONF; 122} 123 124 125static int cpu_match(device_t, cfdata_t, void *); 126static void cpu_attach(device_t, device_t, void *); 127 128CFATTACH_DECL_NEW(cpu, 0, cpu_match, cpu_attach, NULL, NULL); 129 130int 131cpu_match(device_t parent, cfdata_t cf, void *aux) 132{ 133 struct mainbus_attach_args *mba = aux; 134 135 if (strcmp(mba->mba_name, "cpu") != 0) 136 return 0; 137 138 return 1; 139} 140 141void 142cpu_attach(device_t parent, device_t self, void *aux) 143{ 144 struct mainbus_attach_args *mba = aux; 145 146 (void) cpu_attach_common(self, mba->mba_unit); 147} 148