150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/* $NetBSD: idprom.c,v 1.12 1996/03/26 15:16:09 gwr Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1993 Adam Glass
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Adam Glass.
|
|
* 4. The name of the authors may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/control.h>
|
|
#include <machine/idprom.h>
|
|
#include <machine/mon.h>
|
|
|
|
extern long hostid; /* in kern_sysctl.c */
|
|
|
|
/*
|
|
* This structure is what this driver is all about.
|
|
* It is copied from control space early in startup.
|
|
*/
|
|
struct idprom identity_prom;
|
|
|
|
int idpromopen(dev, oflags, devtype, p)
|
|
dev_t dev;
|
|
int oflags;
|
|
int devtype;
|
|
struct proc *p;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int idpromclose(dev, fflag, devtype, p)
|
|
dev_t dev;
|
|
int fflag;
|
|
int devtype;
|
|
struct proc *p;
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
idpromread(dev, uio, ioflag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int ioflag;
|
|
{
|
|
int error, unit, length;
|
|
|
|
error = 0;
|
|
while (uio->uio_resid > 0 && error == 0) {
|
|
if (uio->uio_offset >= IDPROM_SIZE)
|
|
break; /* past or at end */
|
|
length = min(uio->uio_resid,
|
|
(IDPROM_SIZE - (int)uio->uio_offset));
|
|
error = uiomove((caddr_t) &identity_prom, length, uio);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* This is called very early during startup to
|
|
* get a copy of the idprom from control space.
|
|
*/
|
|
int idprom_init()
|
|
{
|
|
struct idprom *idp;
|
|
char *src, *dst;
|
|
int len, x, xorsum;
|
|
union {
|
|
long l;
|
|
char c[4];
|
|
} hid;
|
|
|
|
idp = &identity_prom;
|
|
dst = (char*)idp;
|
|
src = (char*)IDPROM_BASE;
|
|
len = IDPROM_SIZE;
|
|
xorsum = 0; /* calculated as xor of data */
|
|
|
|
do {
|
|
x = get_control_byte(src++);
|
|
*dst++ = x;
|
|
xorsum ^= x;
|
|
} while (--len > 0);
|
|
|
|
if (xorsum != 0) {
|
|
mon_printf("idprom_fetch: bad checksum=%d\n", xorsum);
|
|
return xorsum;
|
|
}
|
|
if (idp->idp_format < 1) {
|
|
mon_printf("idprom_fetch: bad version=%d\n", idp->idp_format);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Construct the hostid from the idprom contents.
|
|
* This appears to be the way SunOS does it.
|
|
*/
|
|
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];
|
|
hostid = hid.l;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void idprom_etheraddr(eaddrp)
|
|
u_char *eaddrp;
|
|
{
|
|
u_char *src, *dst;
|
|
int len = 6;
|
|
|
|
src = identity_prom.idp_etheraddr;
|
|
dst = eaddrp;
|
|
|
|
do *dst++ = *src++;
|
|
while (--len > 0);
|
|
}
|