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NetBSD/sys/arch/sh5/include/vmparam.h
scw 59474a8c82 NetBSD, meet the SH-5 cpu. 
SH-5, meet NetBSD.

Let's hope this is the start of a long and fruitful relationship. :-)

This code, funded by Wasabi Systems, adds initial support for the
Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD.

At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator
which has no simulated devices other than a simple console. However, it
is good enough to get to the "root device: " prompt.

Device driver support for Real SH-5 Hardware is in place, particularly for
supporting the up-coming Cayman evaluation board, and should be quite
easy to get running when the hardware is available.

There is no in-tree toolchain for this port at this time. Gcc-current has
rudimentary SH-5 support but it is known to be buggy. A working toolchain
was obtained from SuperH to facilitate this port. Gcc-current will be
fixed in due course.

The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has
currently only been tested in 32-bit mode. It is bi-endian, via a boot-
time option and it also has an "SHcompact" mode in which it will execute
SH-[34] user-land instructions.

For more information on the SH-5, see www.superh.com. Suffice to say it
is *not* just another respin of the SH-[34].
2002-07-05 13:31:28 +00:00

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/* $NetBSD: vmparam.h,v 1.1 2002/07/05 13:32:02 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Steve C. Woodford for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas <matt@3am-softwre.com> of Allegro Networks, Inc.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#ifndef _SH5_VMPARAM_H
#define _SH5_VMPARAM_H
/*
* SH5 VM contants
*/
#include <sys/queue.h>
/*
* Virtual Memory constants.
*
* The kernel always occupies the top 1GB of virtual address space,
* regardless of whether it's running in 32- or 64-bit mode.
*
* User VM space stretches to fill what's left.
*/
#ifdef _LP64
#define VM_MIN_KERNEL_ADDRESS (0xffffffffc0000000UL)
#define VM_MAX_KERNEL_ADDRESS (0xfffffffffffff000UL)
#else
#define VM_MIN_KERNEL_ADDRESS (0xc0000000UL)
#define VM_MAX_KERNEL_ADDRESS (0xfffff000UL)
#endif
#define VM_MIN_ADDRESS (0)
#define VM_MAXUSER_ADDRESS (VM_MIN_KERNEL_ADDRESS - NBPG)
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
/*
* USRTEXT is the virtual address of the start of user text/data/bss space.
*
* USRSTACK is the top of user stack.
*/
#define USRTEXT (VM_MIN_ADDRESS + NBPG)
#define USRSTACK VM_MAXUSER_ADDRESS
/* Virtual memory resoruce limit. */
#define MAXTSIZ (64 * 1024 * 1024) /* max text size */
#ifndef MAXDSIZ
#define MAXDSIZ (512 * 1024 * 1024) /* max data size */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (32 * 1024 * 1024) /* max stack size */
#endif
/* initial data size limit */
#ifndef DFLDSIZ
#define DFLDSIZ (128 * 1024 * 1024)
#endif
/* initial stack size limit */
#ifndef DFLSSIZ
#define DFLSSIZ (4 * 1024 * 1024)
#endif
/*
* Size of shared memory map
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 1024
#endif
/* Size of user raw I/O map */
#ifndef USRIOSIZE
#define USRIOSIZE (MAXBSIZE / NBPG * 8)
#endif
#define VM_PHYS_SIZE (USRIOSIZE * NBPG)
/*
* Physical memory segments
* Alloc port-specific vmparam.h to override
*/
#ifndef VM_PHYSSEG_MAX
#define VM_PHYSSEG_MAX 1
#endif
#ifndef VM_PHYSSEG_STRAT
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
#endif
#ifndef VM_PHYSSEG_NOADD
#define VM_PHYSSEG_NOADD
#endif
#ifndef VM_NFREELIST
#define VM_NFREELIST 1
#define VM_FREELIST_DEFAULT 0
#endif
#ifndef _LP64
#define sh5_round_page(x) ((((u_int32_t)(x)) + PGOFSET) & ~PGOFSET)
#define sh5_trunc_page(x) ((u_int32_t)(x) & ~PGOFSET)
#define sh5_page_offset(x) ((u_int32_t)(x) & PGOFSET)
#define sh5_btop(x) ((u_int32_t)(x) >> PGSHIFT)
#define sh5_ptob(x) ((u_int32_t)(x) << PGSHIFT)
#else
#define sh5_round_page(x) ((((u_int64_t)(x)) + PGOFSET) & ~PGOFSET)
#define sh5_trunc_page(x) ((u_int64_t)(x) & ~PGOFSET)
#define sh5_page_offset(x) ((u_int64_t)(x) & PGOFSET)
#define sh5_btop(x) ((u_int64_t)(x) >> PGSHIFT)
#define sh5_ptob(x) ((u_int64_t)(x) << PGSHIFT)
#endif
/* pmap-specific data store in the vm_page structure. */
#define __HAVE_VM_PAGE_MD
#ifndef _LOCORE
LIST_HEAD(pvo_head, pvo_entry);
struct vm_page_md {
struct pvo_head mdpg_pvoh;
unsigned int mdpg_attrs;
};
#define VM_MDPAGE_INIT(pg) \
do { \
LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \
(pg)->mdpage.mdpg_attrs = 0; \
} while (/*CONSTCOND*/0)
#endif /* _LOCORE */
#endif /* _SH5_VMPARAM_H */
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