1 /* $NetBSD: consinit.c,v 1.3 2011/07/01 19:03:50 dyoung Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Jachym Holecek 5 * All rights reserved. 6 * 7 * Written for DFC Design, s.r.o. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include "opt_cons.h" 33 #include "xlcom.h" 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.3 2011/07/01 19:03:50 dyoung Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 42 #include <sys/bus.h> 43 44 #include <evbppc/virtex/virtex.h> 45 46 #include <dev/cons.h> 47 48 49 #if NXLCOM > 0 50 extern struct consdev consdev_xlcom; 51 void xlcom_cninit(struct consdev *, bus_addr_t); 52 #if defined(KGDB) 53 void xlcom_kgdbinit(void); 54 #endif 55 #endif 56 57 struct consdev *cn_tab = NULL; 58 bus_space_tag_t consdev_iot; 59 bus_space_handle_t consdev_ioh; 60 61 #if defined(KGDB) 62 bus_space_tag_t kgdb_iot; 63 bus_space_handle_t kgdb_ioh; 64 #endif 65 66 67 /* 68 * Initialize the system console (hmm, as if anyone can see those panics). 69 */ 70 void 71 consinit(void) 72 { 73 static int initted = 0; 74 75 if (initted) 76 return; 77 78 /* Pick MD knowledge about console. */ 79 if (virtex_bus_space_tag(CONS_NAME, &consdev_iot)) 80 panic("No bus space for %s console", CONS_NAME); 81 82 #if defined(KGDB) 83 if (virtex_bus_space_tag(KGDB_NAME, &kgdb_iot)) 84 panic("No bus space for %s kgdb", KGDB_NAME); 85 #endif 86 87 #if NXLCOM > 0 88 #if defined(KGDB) 89 if (strncmp("xlcom", KGDB_NAME, 5)) { 90 xlcom_kgdbinit(); 91 92 /* Overtake console device, we're higher priority. */ 93 if (strcmp(KGDB_NAME, CONS_NAME) == 0 && 94 KGDB_ADDR == CONS_ADDR) 95 goto done; 96 } 97 #endif 98 if (strncmp("xlcom", CONS_NAME, 5) == 0) { 99 cn_tab = &consdev_xlcom; 100 xlcom_cninit(cn_tab, CONS_ADDR); 101 102 goto done; 103 } 104 #endif 105 106 panic("No console"); /* XXX really panic? */ 107 done: 108 /* If kgdb overtook console, cn_tab is NULL and dev/cons.c deals. */ 109 initted = 1; 110 } 111