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) 1994, by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Return our machine address in the single argument. 31 */ 32 33 #include <sys/promif.h> 34 #include <sys/promimpl.h> 35 #include <sys/idprom.h> 36 37 /*ARGSUSED*/ 38 int 39 prom_getmacaddr(ihandle_t hd, caddr_t ea) 40 { 41 idprom_t idprom; 42 dnode_t macnodeid; 43 44 /* 45 * Look for the 'mac-address' property in the device node 46 * associated with the ihandle 'hd'. This handles the 47 * cases when we booted from the network device, using either 48 * the platform mac address or a local mac address. This 49 * code will always return whichever mac-address was used by the 50 * firmware (local or platform, depending on nvram settings). 51 */ 52 macnodeid = prom_getphandle(hd); 53 if (macnodeid != OBP_BADNODE) { 54 if (prom_getproplen(macnodeid, OBP_MAC_ADDR) != -1) { 55 (void) prom_getprop(macnodeid, OBP_MAC_ADDR, ea); 56 return (0); 57 } 58 } 59 60 /* 61 * The code above, should have taken care of the case 62 * when we booted from the device ... otherwise, as a fallback 63 * case, return the system mac address from the idprom. 64 * This code (idprom) is SMCC (and compatibles) platform-centric. 65 * This code always returns the platform mac address. 66 */ 67 if (prom_getidprom((caddr_t) &idprom, sizeof (idprom)) == 0) { 68 register char *f = (char *) idprom.id_ether; 69 register char *t = ea; 70 int i; 71 72 for (i = 0; i < sizeof (idprom.id_ether); ++i) 73 *t++ = *f++; 74 75 return (0); 76 } else 77 return (-1); /* our world must be starting to explode */ 78 } 79