/*-
* Copyright (c) 1998 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 driver provides a soft copy of the IDPROM.
* It is copied from the device early in startup.
* Allow these to be patched (helps with poor old
* Sun3/80 boxes with dead NVRAM).
*/
u_char cpu_machine_id = 0;
struct idprom identity_prom = { 0 };
/* Fetch a copy of the idprom. */
void
idprom_init(void)
{
if (identity_prom.idp_format == 1)
return;
/* Copy the IDPROM contents and do the checksum. */
if (_is3x)
idprom_init3x();
else if (_is2)
idprom_init2();
else
idprom_init3();
if (identity_prom.idp_format != 1)
panic("idprom: bad version");
cpu_machine_id = identity_prom.idp_machtype;
}
/*
* Sun2 version:
* Just copy it from control space.
*/
static void
idprom_init2(void)
{
/* Copy the IDPROM contents and do the checksum. */
sun2_getidprom((u_char *) &identity_prom);
if (idprom_cksum((u_char *) &identity_prom))
printf("idprom: bad checksum\n");
}
/*
* Sun3 version:
* Just copy it from control space.
*/
static void
idprom_init3(void)
{
/* Copy the IDPROM contents and do the checksum. */
sun3_getidprom((u_char *) &identity_prom);
if (idprom_cksum((u_char *) &identity_prom))
printf("idprom: bad checksum\n");
}
/*
* Sun3X version:
* Rather than do all the map-in/probe work to find the idprom,
* we can cheat! We _know_ the monitor already made a copy of
* the IDPROM in its data page. All we have to do is find it.
*
* Yeah, this is sorta gross... Only used on old PROMs that
* do not have a sif_macaddr function (rev < 3.0). The area
* to search was determined from some "insider" info. about
* the layout of the PROM data area.
*/
static void
idprom_init3x(void)
{
u_char *p;
printf("idprom: Sun3X search for soft copy...\n");
for (p = (u_char *)(SUN3X_MONDATA + 0x0400);
p < (u_char *)(SUN3X_MONDATA + 0x1c00); p++)
{
/* first check for some constants */
if (p[0] != 0x01) /* format */
continue;
if (p[2] != 0x08) /* ether[0] */
continue;
if (p[3] != 0x00) /* ether[1] */
continue;
if (p[4] != 0x20) /* ether[2] */
continue;
if ((p[1] & 0xfc) != IDM_ARCH_SUN3X)
continue;
/* Looks plausible. Try the checksum. */
if (idprom_cksum(p) == 0)
goto found;
}
panic("idprom: not found in monitor data");
found:
printf("idprom: copy found at 0x%x\n", (int)p);
memcpy(&identity_prom, p, sizeof(struct idprom));
}
