/*-
 * 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.
 */

#ifdef __arm__
#include <arm/param.h>
#else /* !__arm__ */

#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_

/*
 * Machine dependent constants for arm64.
 */

#include <sys/_align.h>

#define STACKALIGNBYTES (16 - 1)

#ifndef MACHINE
#define MACHINE         "arm64"
#endif
#ifndef MACHINE_ARCH
#define MACHINE_ARCH    "aarch64"
#endif
#ifndef MACHINE_ARCH32
#define MACHINE_ARCH32  "armv7"
#endif

#ifdef SMP
#ifndef MAXCPU
#define MAXCPU          1024
#endif
#else
#define MAXCPU          1
#endif

#ifndef MAXMEMDOM
#define MAXMEMDOM       8
#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).
 */
#define ALIGNED_POINTER(p, t)   ((((u_long)(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        7
#define CACHE_LINE_SIZE         (1 << CACHE_LINE_SHIFT)

#define PAGE_SHIFT_4K   12
#define PAGE_SIZE_4K    (1 << PAGE_SHIFT_4K)

#define PAGE_SHIFT_16K  14
#define PAGE_SIZE_16K   (1 << PAGE_SHIFT_16K)

#define PAGE_SHIFT_64K  16
#define PAGE_SIZE_64K   (1 << PAGE_SHIFT_64K)

#define PAGE_SHIFT      PAGE_SHIFT_4K
#define PAGE_SIZE       (1 << PAGE_SHIFT)
#define PAGE_MASK       (PAGE_SIZE - 1)

#define MAXPAGESIZES    4               /* maximum number of supported page sizes */

#ifndef KSTACK_PAGES
#if defined(KASAN) || defined(KMSAN)
#define KSTACK_PAGES    6
#else
#define KSTACK_PAGES    4       /* pages of kernel stack (with pcb) */
#endif
#endif

#define KSTACK_GUARD_PAGES      1       /* pages of kstack guard; 0 disables */
#define PCPU_PAGES              1

#ifdef PERTHREAD_SSP
#define NO_PERTHREAD_SSP        __nostackprotector
#else
#define NO_PERTHREAD_SSP
#endif

/*
 * Mach derived conversion macros
 */
#define arm64_btop(x)           ((unsigned long)(x) >> PAGE_SHIFT)
#define arm64_ptob(x)           ((unsigned long)(x) << PAGE_SHIFT)

#endif /* !_MACHINE_PARAM_H_ */

#endif /* !__arm__ */