initial import of NetBSD tree

1 files changed, 86 insertions, 0 deletions

diff --git a/sys/arch/i386/isa/nvram.h b/sys/arch/i386/isa/nvram.h
new file mode 100644
index 00000000000..31c24afdf53
--- /dev/null
+++ b/sys/arch/i386/isa/nvram.h
@@ -0,0 +1,86 @@
+/*	$NetBSD: nvram.h,v 1.5 1995/05/05 22:08:43 mycroft Exp $	*/
+
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ *	@(#)rtc.h	8.1 (Berkeley) 6/11/93
+ */
+
+/*
+ * The following information is found in the non-volatile RAM in the
+ * MC146818A (or DS1287A or other compatible) RTC on AT-compatible PCs.
+ */
+
+/* NVRAM byte 0: bios diagnostic */
+#define NVRAM_DIAG	(MC_NVRAM_START + 0)	/* RTC offset 0xe */
+
+#define NVRAM_DIAG_BITS		"\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time"
+
+/* NVRAM byte 1: reset code */
+#define NVRAM_RESET	(MC_NVRAM_START + 1)	/* RTC offset 0xf */
+
+#define	NVRAM_RESET_RST		0x00		/* normal reset */
+#define	NVRAM_RESET_LOAD 	0x04		/* load system */
+
+/* NVRAM byte 2: diskette drive type in upper/lower nibble */
+#define NVRAM_DISKETTE	(MC_NVRAM_START + 2)	/* RTC offset 0x10 */
+
+#define	NVRAM_DISKETTE_NONE	 0		/* none present */
+#define	NVRAM_DISKETTE_360K	 0x10		/* 360K */
+#define	NVRAM_DISKETTE_12M	 0x20		/* 1.2M */
+#define	NVRAM_DISKETTE_720K	 0x30		/* 720K */
+#define	NVRAM_DISKETTE_144M	 0x40		/* 1.44M */
+#define	NVRAM_DISKETTE_TYPE5	 0x50		/* 2.88M, presumably */
+#define	NVRAM_DISKETTE_TYPE6	 0x60		/* 2.88M */
+
+/* NVRAM byte 6: equipment type */
+#define	NVRAM_EQUIPMENT	(MC_NVRAM_START + 6)
+
+#define	NVRAM_EQUIPMENT_EGAVGA	0x00		/* EGA or VGA */
+#define	NVRAM_EQUIPMENT_COLOR40	0x10		/* 40 column color */
+#define	NVRAM_EQUIPMENT_COLOR80	0x20		/* 80 column color */
+#define	NVRAM_EQUIPMENT_MONO80	0x30		/* 80 column mono */
+#define	NVRAM_EQUIPMENT_MONITOR	0x30		/* mask for monitor type */
+
+/* NVRAM bytes 7 & 8: base memory size */
+#define NVRAM_BASELO	(MC_NVRAM_START + 7)	/* low byte; RTC off. 0x15 */
+#define NVRAM_BASEHI	(MC_NVRAM_START + 8)	/* high byte; RTC off. 0x16 */
+
+/* NVRAM bytes 9 & 10: extended memory size */
+#define NVRAM_EXTLO	(MC_NVRAM_START + 9)	/* low byte; RTC off. 0x17 */
+#define NVRAM_EXTHI	(MC_NVRAM_START + 10)	/* high byte; RTC off. 0x18 */
+
+/* NVRAM byte 36: current century.  (please increment in Dec99!) */
+#define NVRAM_CENTURY	(MC_NVRAM_START + 36)	/* RTC offset 0x32 */