[src/netbsd-1-4]: src/sys/arch/sun3/sun3 Fix the IDPROM checksum. It should ...

[gwr <gwr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/11aebe470932
branches:  netbsd-1-4
changeset: 468115:11aebe470932
user:      gwr <gwr%NetBSD.org@localhost>
date:      Thu Apr 08 04:08:02 1999 +0000

description:
Fix the IDPROM checksum.  It should check only the first 16 bytes.
Also try to make the sun3 and sun3x versions more similar.

diffstat:

 sys/arch/sun3/sun3/idprom.c |  158 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 158 insertions(+), 0 deletions(-)

diffs (162 lines):

diff -r 1ace43987639 -r 11aebe470932 sys/arch/sun3/sun3/idprom.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sun3/sun3/idprom.c       Thu Apr 08 04:08:02 1999 +0000
@@ -0,0 +1,158 @@
+/*     $NetBSD: idprom.c,v 1.23.2.2 1999/04/08 04:08:02 gwr Exp $      */
+
+/*-
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 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
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/kernel.h>
+
+#include <machine/autoconf.h>
+#include <machine/idprom.h>
+
+#include <sun3/sun3/machdep.h>
+#ifdef _SUN3_
+#include <sun3/sun3/control.h>
+#elif _SUN3X_
+#include <sun3/sun3x/obio.h>
+#endif
+
+/*
+ * 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 __P((u_char *));
+static void idprom_get __P((u_char *));
+static int idprom_hostid __P((void));
+
+/*
+ * Copy the IDPROM contents,
+ * verify the checksum,
+ * set the hostid...
+ */
+void
+idprom_init()
+{
+
+       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");
+
+       cpu_machine_id = identity_prom.idp_machtype;
+       hostid = idprom_hostid();
+}
+
+static int
+idprom_cksum(p)
+       u_char *p;
+{
+       int len, x;
+
+       len = IDPROM_CKSUM_SIZE;
+       x = 0;  /* xor of data */
+       do x ^= *p++;
+       while (--len > 0);
+       return (x);
+}
+
+static int
+idprom_hostid()
+{
+       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(eaddrp)
+       u_char *eaddrp;
+{
+
+       bcopy(identity_prom.idp_etheraddr, eaddrp, 6);
+}
+
+/*
+ * Machine specific stuff follows.
+ */
+
+#ifdef _SUN3_
+/*
+ * Copy the IDPROM to memory.
+ *
+ * On the Sun3, this is called very early,
+ * because we need the cputype.
+ */
+static void
+idprom_get(dst)
+       u_char *dst;
+{
+       vm_offset_t src;        /* control space address */
+       int len, x;
+
+       src = IDPROM_BASE;
+       len = IDPROM_SIZE;
+       do {
+               x = get_control_byte(src++);
+               *dst++ = x;
+       } while (--len > 0);
+}
+
+#endif /* SUN3 */
+#ifdef _SUN3X_
+#error "not yet merged"
+#endif /* SUN3X */