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authorMiod Vallat <miod@cvs.openbsd.org>2006-04-25 09:19:53 +0000
committerMiod Vallat <miod@cvs.openbsd.org>2006-04-25 09:19:53 +0000
commit7cfb4aac6d6cdbf5621b83fbb0d217d0ed60c464 (patch)
tree8f399ce3318a9100e7d7ffbc26b22b97ac9fe38a /sys/arch
parent29ff780c97857533ac84900b695f8ba54b3050b8 (diff)
Oops, correct import this time.
Diffstat (limited to 'sys/arch')
-rw-r--r--sys/arch/aviion/dev/nvramreg.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/sys/arch/aviion/dev/nvramreg.h b/sys/arch/aviion/dev/nvramreg.h
new file mode 100644
index 00000000000..86dabf3bcc1
--- /dev/null
+++ b/sys/arch/aviion/dev/nvramreg.h
@@ -0,0 +1,87 @@
+/* $OpenBSD: nvramreg.h,v 1.1 2006/04/25 09:19:52 miod Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Lawrence Berkeley Laboratory.
+ *
+ * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ * @(#)clockreg.h 8.1 (Berkeley) 6/11/93
+ */
+
+/*
+ * Mostek TOD clock/NVRAM
+ */
+
+/*
+ * Mostek MK48T08 clock.
+ *
+ * This chip is 8k in size.
+ * The first TOD clock starts at offset 0x1FF8. The following structure
+ * describes last 2K of it's 8K address space. The first 6K of the NVRAM
+ * space is used for various things as follows:
+ * 0000-0fff User Area
+ * 1000-10ff Networking Area
+ * 1100-16f7 Operating System Area
+ * 16f8-1ef7 ROM Debugger Area
+ * 1ef8-1ff7 Configuration Area (Ethernet address etc)
+ * 1ff8-1fff TOD clock
+ */
+
+/*
+ * On AV400, these offsets need shifting two bits, as they are 32 bit
+ * registers.
+ */
+#define CLK_CSR 0 /* control register */
+#define CLK_SEC 1 /* seconds (0..59; BCD) */
+#define CLK_MIN 2 /* minutes (0..59; BCD) */
+#define CLK_HOUR 3 /* hour (0..23; BCD) */
+#define CLK_WDAY 4 /* weekday (1..7) */
+#define CLK_DAY 5 /* day in month (1..31; BCD) */
+#define CLK_MONTH 6 /* month (1..12; BCD) */
+#define CLK_YEAR 7 /* year (0..99; BCD) */
+#define CLK_NREG 8
+
+/* csr bits */
+#define CLK_WRITE 0x80 /* want to write */
+#define CLK_READ 0x40 /* want to read (freeze clock) */
+
+/*
+ * Data General, following Motorola, chose the year `1900' as their base count.
+ * It has already wrapped by now...
+ */
+#define YEAR0 00
+
+#define AV400_NVRAM_TOD_OFF 0x1fe0 /* offset of tod in NVRAM space */
+#define MK48T02_SIZE 2 * 1024