Preliminary bits for SuperH-based ports, based on NetBSD/sh3 codebase with

minor changes.

1 files changed, 137 insertions, 0 deletions

diff --git a/sys/arch/sh/include/param.h b/sys/arch/sh/include/param.h
new file mode 100644
index 00000000000..9a4493af3ee
--- /dev/null
+++ b/sys/arch/sh/include/param.h
@@ -0,0 +1,137 @@
+/*	$OpenBSD: param.h,v 1.1 2006/10/06 21:02:55 miod Exp $	*/
+/*	$NetBSD: param.h,v 1.15 2006/08/28 13:43:35 yamt Exp $	*/
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved.
+ * 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.
+ * 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.
+ *
+ *	@(#)param.h	5.8 (Berkeley) 6/28/91
+ */
+
+/*
+ * SuperH dependent constants.
+ */
+
+#ifndef _SH_PARAM_H_
+#define	_SH_PARAM_H_
+
+#define	_MACHINE_ARCH	sh
+#define	MACHINE_ARCH	"sh"
+
+#ifndef	MID_MACHINE
+#define	MID_MACHINE	MID_SH3
+#endif
+
+#if defined(_KERNEL) && !defined(_LOCORE)
+#include <sh/cpu.h>
+#endif
+
+/*
+ * We use 4K pages on the sh3/sh4.  Override the PAGE_* definitions
+ * to be compile-time constants.
+ */
+#define	PAGE_SHIFT		12
+#define	PAGE_SIZE		(1 << PAGE_SHIFT)
+#define	PAGE_MASK		(PAGE_SIZE - 1)
+
+#define	PGSHIFT			PAGE_SHIFT
+#define	NBPG			PAGE_SIZE
+#define	PGOFSET			PAGE_MASK
+
+/*
+ * Round p (pointer or byte index) up to a correctly-aligned value
+ * for all data types (int, long, ...).   The result is u_int and
+ * must be cast to any desired pointer type.
+ *
+ * ALIGNED_POINTER is a boolean macro that checks whether an address
+ * is valid to fetch data elements of type t from on this architecture.
+ * This does not reflect the optimal alignment, just the possibility
+ * (within reasonable limits).
+ *
+ */
+#define	ALIGNBYTES		(sizeof(int) - 1)
+#define	ALIGN(p)		(((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
+#define	ALIGNED_POINTER(p, t)	((((u_long)(p)) & (sizeof(t) - 1)) == 0)
+
+#define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
+#define	DEV_BSIZE	(1 << DEV_BSHIFT)
+#define	BLKDEV_IOSIZE	2048
+#define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
+
+/*
+ * u-space.
+ */
+#define	UPAGES		2		/* pages of u-area */
+#define	USPACE		(UPAGES * NBPG)	/* total size of u-area */
+#define	USPACE_ALIGN	(0)
+#if UPAGES == 1
+#error "too small u-area"
+#elif UPAGES == 2
+#define	P1_STACK	/* kernel stack is P1-area */
+#else
+#undef	P1_STACK	/* kernel stack is P3-area */
+#endif
+
+#ifndef MSGBUFSIZE
+#define	MSGBUFSIZE	NBPG		/* default message buffer size */
+#endif
+
+#define	btoc(x)		(((x) + PAGE_MASK) >> PAGE_SHIFT)
+#define	ctob(x)		((x) << PAGE_SHIFT)
+
+#define	btodb(bytes)	 		/* calculates (bytes / DEV_BSIZE) */ \
+	((bytes) >> DEV_BSHIFT)
+#define	dbtob(db)			/* calculates (db * DEV_BSIZE) */ \
+	((db) << DEV_BSHIFT)
+
+/*
+ * Constants related to network buffer management.
+ * MCLBYTES must be no larger than NBPG (the software page size), and,
+ * on machines that exchange pages of input or output buffers with mbuf
+ * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
+ * of the hardware page size.
+ */
+#define	MSIZE		256		/* size of an mbuf */
+
+#define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
+					/* 2K cluster can hold Ether frame */
+#define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
+
+#define	NMBCLUSTERS	4096		/* map size, max cluster allocation */
+
+/*
+ * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
+ * logical pages.
+ */
+#define	NKMEMPAGES_MIN_DEFAULT	((4 * 1024 * 1024) >> PAGE_SHIFT)
+#define	NKMEMPAGES_MAX_DEFAULT	((64 * 1024 * 1024) >> PAGE_SHIFT)
+
+#endif /* !_SH3_PARAM_H_ */