Add skeleton machine dependent headers and c files for a port of freebsd

to a new architecture.  This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports.  Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
  architecture, including empty versions of all the machine dependent
  structures
- a machine independent atomic.h, which can be used until a port has
  support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
  when called and print out the name of the function that needs to
  be implemented.  functions which are normally in assembly files are
  not included, but this should reduce the number of different undefined
  references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.

Requested by:   alfred, imp, jhb

1 files changed, 165 insertions, 0 deletions

diff --git a/sys/sparc64/include/param.h b/sys/sparc64/include/param.h
new file mode 100644
index 0000000..c164134
--- /dev/null
+++ b/sys/sparc64/include/param.h
@@ -0,0 +1,165 @@
+/*-
+ * Copyright (c) 1990 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.
+ *
+ * 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.
+ *
+ *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
+ * $FreeBSD$
+ */
+
+/*
+ * Machine dependent constants for sparc64.
+ */
+
+#define	TODO							\
+	panic("implement " __func__)
+
+/*
+ * Round p (pointer or byte index) up to a correctly-aligned value
+ * for all data types (int, long, ...).   The result is unsigned int
+ * and must be cast to any desired pointer type.
+ */
+#ifndef _ALIGNBYTES
+#define _ALIGNBYTES	0xf
+#endif
+#ifndef _ALIGN
+#define _ALIGN(p)	(((u_long)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
+#endif
+
+#ifndef _MACHINE
+#define	_MACHINE	sparc64
+#endif
+#ifndef _MACHINE_ARCH
+#define	_MACHINE_ARCH	sparc64
+#endif
+
+#ifndef _NO_NAMESPACE_POLLUTION
+
+#ifndef _MACHINE_PARAM_H_
+#define	_MACHINE_PARAM_H_
+
+#ifndef MACHINE
+#define MACHINE		"sparc64"
+#endif
+#ifndef MACHINE_ARCH
+#define	MACHINE_ARCH	"sparc64"
+#endif
+#define MID_MACHINE	MID_SPARC64
+
+/*
+ * OBJFORMAT_NAMES is a comma-separated list of the object formats
+ * that are supported on the architecture.
+ */
+#define OBJFORMAT_NAMES		"elf"
+#define OBJFORMAT_DEFAULT	"elf"
+
+#ifdef SMP
+#define MAXCPU		16
+#else
+#define MAXCPU		1
+#endif /* SMP */
+
+#define ALIGNBYTES	_ALIGNBYTES
+#define ALIGN(p)	_ALIGN(p)
+
+#define PAGE_SHIFT	13		/* LOG2(PAGE_SIZE) */
+#define PAGE_SIZE	(1<<PAGE_SHIFT)	/* bytes/page */
+#define PAGE_MASK	(PAGE_SIZE-1)
+#define NPTEPG		(PAGE_SIZE/(sizeof (pt_entry_t)))
+
+#define NPDEPG		(PAGE_SIZE/(sizeof (pd_entry_t)))
+#define PDRSHIFT	22		/* LOG2(NBPDR) */
+#define NBPDR		(1<<PDRSHIFT)	/* bytes/page dir */
+#define PDRMASK		(NBPDR-1)
+
+#define DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
+#define DEV_BSIZE	(1<<DEV_BSHIFT)
+
+#ifndef BLKDEV_IOSIZE
+#define BLKDEV_IOSIZE	PAGE_SIZE	/* default block device I/O size */
+#endif
+#define DFLTPHYS	(64 * 1024)	/* default max raw I/O transfer size */
+#define MAXPHYS		(128 * 1024)	/* max raw I/O transfer size */
+#define MAXDUMPPGS	(DFLTPHYS/PAGE_SIZE)
+
+#define IOPAGES	2		/* pages of i/o permission bitmap */
+#define UPAGES	2		/* pages of u-area */
+
+/*
+ * Constants related to network buffer management.
+ * MCLBYTES must be no larger than PAGE_SIZE.
+ */
+#ifndef	MSIZE
+#define MSIZE		256		/* size of an mbuf */
+#endif	/* MSIZE */
+
+#ifndef	MCLSHIFT
+#define MCLSHIFT	11		/* convert bytes to mbuf clusters */
+#endif	/* MCLSHIFT */
+#define MCLBYTES	(1 << MCLSHIFT)	/* size of an mbuf cluster */
+
+/*
+ * Some macros for units conversion
+ */
+
+/* clicks to bytes */
+#define ctob(x)	((x)<<PAGE_SHIFT)
+
+/* bytes to clicks */
+#define btoc(x)	(((unsigned)(x)+PAGE_MASK)>>PAGE_SHIFT)
+
+/*
+ * btodb() is messy and perhaps slow because `bytes' may be an off_t.  We
+ * want to shift an unsigned type to avoid sign extension and we don't
+ * want to widen `bytes' unnecessarily.  Assume that the result fits in
+ * a daddr_t.
+ */
+#define btodb(bytes)	 		/* calculates (bytes / DEV_BSIZE) */ \
+	(sizeof (bytes) > sizeof(long) \
+	 ? (daddr_t)((unsigned long long)(bytes) >> DEV_BSHIFT) \
+	 : (daddr_t)((unsigned long)(bytes) >> DEV_BSHIFT))
+
+#define dbtob(db)			/* calculates (db * DEV_BSIZE) */ \
+	((off_t)(db) << DEV_BSHIFT)
+
+/*
+ * Mach derived conversion macros
+ */
+#define trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
+#define round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
+#define trunc_4mpage(x)		((unsigned long)(x) & ~PDRMASK)
+#define round_4mpage(x)		((((unsigned long)(x)) + PDRMASK) & ~PDRMASK)
+
+#define atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
+#define ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
+
+#define sparc64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
+#define sparc64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
+
+#define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
+
+#endif /* !_MACHINE_PARAM_H_ */
+#endif /* !_NO_NAMESPACE_POLLUTION */