1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1990,1992-1994 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * XXX: Break this up into individual property lookups. 31 */ 32 33 #include <sys/promif.h> 34 #include <sys/promimpl.h> 35 #include <sys/idprom.h> 36 37 /* 38 * Get idprom property from root node, return to callers buffer. 39 */ 40 41 int 42 prom_getidprom(caddr_t addr, int size) 43 { 44 u_char *cp, val = 0; 45 /*LINTED [idprom unused]*/ 46 idprom_t idprom; 47 int i; 48 int length; 49 50 length = prom_getproplen(prom_rootnode(), OBP_IDPROM); 51 if (length == -1) { 52 prom_printf("Missing OBP idprom property.\n"); 53 return (-1); 54 } 55 56 if (length > size) { 57 prom_printf("Buffer size too small.\n"); 58 return (-1); 59 } 60 61 (void) prom_getprop(prom_rootnode(), OBP_IDPROM, 62 (caddr_t) addr); 63 64 /* 65 * Test the checksum for sanity 66 */ 67 for (cp = (u_char *)addr, i = 0; 68 i < (sizeof (idprom) - sizeof (idprom.id_undef)); i++) 69 val ^= *cp++; 70 71 if (val != 0) 72 prom_printf("Warning: IDprom checksum error.\n"); 73 74 return (0); 75 } 76