1 /* $NetBSD: idprom.c,v 1.2 1997/01/27 22:16:37 gwr Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass and Gordon W. Ross. 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 /* 40 * Machine ID PROM - system type and serial number 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/kernel.h> 47 48 #include <machine/autoconf.h> 49 #include <machine/idprom.h> 50 #include <machine/obio.h> 51 #include <machine/machdep.h> 52 #include <machine/mon.h> 53 54 /* 55 * This structure is what this driver is all about. 56 * It is copied from the device early in startup. 57 */ 58 struct idprom identity_prom; 59 static char *idprom_va; 60 61 /* 62 * This is called very early during startup to 63 * get a copy of the idprom from control space. 64 */ 65 void 66 idprom_init() 67 { 68 struct idprom *idp; 69 char *src, *dst; 70 int len, x, xorsum; 71 union { 72 long l; 73 char c[4]; 74 } hid; 75 76 idprom_va = obio_find_mapping(OBIO_IDPROM2, sizeof(struct idprom)); 77 78 idp = &identity_prom; 79 dst = (char*)idp; 80 src = (char*)idprom_va; 81 len = IDPROM_SIZE; 82 xorsum = 0; /* calculated as xor of data */ 83 84 do { 85 x = *src++; 86 *dst++ = x; 87 xorsum ^= x; 88 } while (--len > 0); 89 90 if (xorsum != 0) { 91 mon_printf("idprom_fetch: bad checksum=%d\n", xorsum); 92 sunmon_abort(); 93 } 94 if (idp->idp_format < 1) { 95 mon_printf("idprom_fetch: bad version=%d\n", idp->idp_format); 96 sunmon_abort(); 97 } 98 99 /* 100 * Construct the hostid from the idprom contents. 101 * This appears to be the way SunOS does it. 102 */ 103 hid.c[0] = idp->idp_machtype; 104 hid.c[1] = idp->idp_serialnum[0]; 105 hid.c[2] = idp->idp_serialnum[1]; 106 hid.c[3] = idp->idp_serialnum[2]; 107 hostid = hid.l; 108 } 109 110 void idprom_etheraddr(eaddrp) 111 u_char *eaddrp; 112 { 113 u_char *src, *dst; 114 int len = 6; 115 116 src = identity_prom.idp_etheraddr; 117 dst = eaddrp; 118 119 do *dst++ = *src++; 120 while (--len > 0); 121 } 122