some includes

1 files changed, 74 insertions, 0 deletions

diff --git a/sys/arch/hppa/include/nvm.h b/sys/arch/hppa/include/nvm.h
new file mode 100644
index 00000000000..a0712807762
--- /dev/null
+++ b/sys/arch/hppa/include/nvm.h
@@ -0,0 +1,74 @@
+/*	$OpenBSD: nvm.h,v 1.1 1998/06/23 19:45:24 mickey Exp $	*/
+
+/* 
+ * Copyright (c) 1990, 1994 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ * 	Utah $Hdr: nvm.h 1.4 94/12/14$
+ *	Author: Jeff Forys, University of Utah CSL
+ */
+
+#ifndef _NVM_
+#define	_NVM_
+
+/*
+ * The PDC provides access to Non-Volatile Memory (NVM).  If this
+ * is implemented (it's HVERSION dependent), the first 256 bytes
+ * are formatted as follows:
+ *
+ *	0x000	+----------------------------+
+ *		| Implementation information |
+ *	0x024	+----------------------------+
+ *		|                            |
+ *		|      IPL information       |
+ *		|                            |
+ *	0x080	+----------------------------+
+ *		|                            |
+ *		|                            |
+ *		|    OS Panic information    |
+ *		|                            |
+ *		|                            |
+ *	0x100	+----------------------------+
+ *
+ * It appears that there are at least 256 bytes of NVM, and only
+ * the "OS Panic information" is not architected.  This means that
+ * we can use locations 0x80 - 0xFF for saving information across
+ * boots (e.g. boot flags and boot device).  I think we should use
+ * the higher portions of this space first, to avoid conflicting
+ * with possible future HP-PA plans for the NVM.
+ *
+ * The PDC requires that NVM be read/written to in word multiples.
+ */
+
+/*
+ * Boot flags and boot device (0xF4 - 0xFF).
+ */
+
+#define	NVM_BOOTDATA	0xF4		/* location of bootdata in NVM */
+#define	NVM_BOOTMAGIC	0xACCEDE	/* magic used for bootdata cksum */
+#define	NVM_BOOTCKSUM(bd) \
+	((unsigned int) NVM_BOOTMAGIC + (bd).flags + (bd).device)
+
+struct bootdata {
+	unsigned int cksum;		/* NVM_BOOTMAGIC + flags + device */
+	unsigned int flags;		/* boot flags */
+	unsigned int device;		/* boot device */
+};
+
+#endif	/* _NVM_ */