/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass and Gordon W. Ross.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Machine ID PROM - system type and serial number
*/
/*
* This structure is what this driver is all about.
* It is copied from the device early in startup.
*/
struct idprom identity_prom;
static int idprom_cksum(u_char *);
static void idprom_get(u_char *);
static int idprom_hostid(void);
/*
* Copy the IDPROM contents,
* verify the checksum,
* set the hostid...
*/
void
idprom_init(void)
{
idprom_get((u_char *)&identity_prom);
if (idprom_cksum((u_char *) &identity_prom))
printf("idprom: bad checksum\n");
if (identity_prom.idp_format < 1)
printf("idprom: bad version\n");
len = IDPROM_CKSUM_SIZE;
x = 0; /* xor of data */
do x ^= *p++;
while (--len > 0);
return (x);
}
static int
idprom_hostid(void)
{
struct idprom *idp;
union {
long l;
char c[4];
} hid;
/*
* Construct the hostid from the idprom contents.
* This appears to be the way SunOS does it.
*/
idp = &identity_prom;
hid.c[0] = idp->idp_machtype;
hid.c[1] = idp->idp_serialnum[0];
hid.c[2] = idp->idp_serialnum[1];
hid.c[3] = idp->idp_serialnum[2];
return (hid.l);
}
void
idprom_etheraddr(u_char *eaddrp)
{
memcpy(eaddrp, identity_prom.idp_etheraddr, 6);
}
/*
* Machine specific stuff follows.
*/
#ifdef _SUN3_
#error "not yet merged"
#endif /* SUN3 */
#ifdef _SUN3X_
/*
* On the Sun3X, this is called early during startup,
* but after trap table setup so peek_byte() works.
* Called by machdep.c:identifycpu()
*/
static void
idprom_get(u_char *dst)
{
u_char *src;
vaddr_t va;
int len;
/* First, probe for a separate IDPROM (3/470). */
find_prom_map(OBIO_IDPROM1, PMAP_OBIO, IDPROM_SIZE, &va);
if (peek_byte((void *)va) == -1) {
/* IDPROM is in the EEPROM */
find_prom_map(OBIO_IDPROM2, PMAP_OBIO, IDPROM_SIZE, &va);
}
/* Copy the IDPROM contents and do the checksum. */
src = (void *)va;
len = IDPROM_SIZE;
do {
*dst++ = *src++;
} while (--len > 0);
}
