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Diffstat (limited to 'sys/arm/include/param.h')
| -rw-r--r-- | sys/arm/include/param.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sys/arm/include/param.h b/sys/arm/include/param.h new file mode 100644 index 000000000000..67f49ec14a99 --- /dev/null +++ b/sys/arm/include/param.h @@ -0,0 +1,132 @@ +/*- + * 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. + */ + +#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) + +#ifndef MACHINE +#define MACHINE "arm" +#endif +#ifndef MACHINE_ARCH +#define MACHINE_ARCH "armv7" +#endif + +#ifdef SMP +#ifndef MAXCPU +#define MAXCPU 4 +#endif +#else +#define MAXCPU 1 +#endif + +#ifndef MAXMEMDOM +#define MAXMEMDOM 1 +#endif + +#define __HAVE_STATIC_DEVMAP + +#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_1mpage(x) ((unsigned)(x) & ~PDRMASK) +#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) + +#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) +#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) + +#endif /* !_ARM_INCLUDE_PARAM_H_ */ |