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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 2001 David E. O'Brien
* 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. 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.
*
* from: @(#)param.h 5.8 (Berkeley) 6/28/91
*/
#ifndef _ARM_INCLUDE_PARAM_H_
#define _ARM_INCLUDE_PARAM_H_
/*
* Machine dependent constants for StrongARM
*/
#include <machine/_align.h>
#define STACKALIGNBYTES (8 - 1)
#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES)
#define __PCI_REROUTE_INTERRUPT
#ifndef MACHINE
#define MACHINE "arm"
#endif
#ifndef MACHINE_ARCH
#if __ARM_ARCH >= 7
#define MACHINE_ARCH "armv7"
#else
#define MACHINE_ARCH "armv6"
#endif
#endif
#ifdef SMP
#ifndef MAXCPU
#define MAXCPU 4
#endif
#else
#define MAXCPU 1
#endif
#ifndef MAXMEMDOM
#define MAXMEMDOM 1
#endif
#define ALIGNBYTES _ALIGNBYTES
#define ALIGN(p) _ALIGN(p)
/*
* 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).
*
* armv4 and v5 require alignment to the type's size. armv6 requires 8-byte
* alignment for the ldrd/strd instructions, but otherwise follows armv7 rules.
* armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary;
* access to smaller types can be unaligned, except that the compiler may
* optimize access to adjacent uint32_t values into a single load/store-multiple
* instruction which requires 4-byte alignment, so we must provide the most-
* pessimistic answer possible even on armv7.
*/
#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0)
/*
* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
* architecture. It should be used with appropriate caution.
*/
#define CACHE_LINE_SHIFT 6
#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
#define PAGE_MASK (PAGE_SIZE - 1)
#define PDR_SHIFT 20 /* log2(NBPDR) */
#define NBPDR (1 << PDR_SHIFT)
#define PDRMASK (NBPDR - 1)
#define NPDEPG (1 << (32 - PDR_SHIFT))
#define MAXPAGESIZES 2 /* maximum number of supported page sizes */
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 2
#endif /* !KSTACK_PAGES */
#ifndef FPCONTEXTSIZE
#define FPCONTEXTSIZE (0x100)
#endif
#ifndef KSTACK_GUARD_PAGES
#define KSTACK_GUARD_PAGES 1
#endif /* !KSTACK_GUARD_PAGES */
#define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE)
/*
* Mach derived conversion macros
*/
#define trunc_page(x) ((x) & ~PAGE_MASK)
#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK)
#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
#define atop(x) ((unsigned)(x) >> PAGE_SHIFT)
#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT)
#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
#endif /* !_ARM_INCLUDE_PARAM_H_ */
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