1 /* $NetBSD: prom.c,v 1.3 2000/12/03 04:51:04 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Wayne Knowles 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/mbuf.h> 42 43 #include <machine/cpu.h> 44 #include <machine/prom.h> 45 46 static struct mips_prom callvec; 47 48 struct mips_prom *callv; 49 50 typedef void (*funcp_t)(void); 51 52 void 53 prom_init(void) 54 { 55 int i; 56 funcp_t *fp; 57 58 fp = (void *)&callvec; 59 for (i=0; i < sizeof(struct mips_prom)/sizeof(funcp_t); i++ ) { 60 fp[i] = (funcp_t)MIPS_PROM_ENTRY(i); 61 } 62 callv = &callvec; 63 } 64 65 /* 66 * Read the environment variable 'console' to determine which serial 67 * port will be used for the console. 68 */ 69 int 70 prom_getconsole(void) 71 { 72 char *cp; 73 74 cp = MIPS_PROM(getenv)("console"); 75 if (cp == NULL) { 76 MIPS_PROM(printf)("WARNING: defaulting to serial port 1\n"); 77 return 1; 78 } 79 return (*cp == '0') ? 0 : 1; 80 } 81