| /* $NetBSD: param.h,v 1.13 2010/05/06 19:10:26 joerg Exp $ */ | |
| /* | |
| * Copyright (c) 1994,1995 Mark Brinicombe. | |
| * All rights reserved. | |
| * | |
| * 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 RiscBSD team. | |
| * 4. The name "RiscBSD" nor the name of the author may be used to | |
| * endorse or promote products derived from this software without specific | |
| * prior written permission. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY RISCBSD ``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 RISCBSD 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 _AARCH64_PARAM_H_ | |
| #define _AARCH64_PARAM_H_ | |
| // TODO: These were based on the ARMv7 version. Verify that it is correct. | |
| /* | |
| * Machine dependent constants for all ARM processors | |
| */ | |
| /* | |
| * For KERNEL code: | |
| * MACHINE must be defined by the individual port. This is so that | |
| * uname returns the correct thing, etc. | |
| * | |
| * MACHINE_ARCH may be defined by individual ports as a temporary | |
| * measure while we're finishing the conversion to ELF. | |
| * | |
| * For non-KERNEL code: | |
| * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb". | |
| */ | |
| #if defined(_KERNEL) | |
| #undef _MACHINE | |
| #undef MACHINE | |
| #undef _MACHINE_ARCH | |
| #undef MACHINE_ARCH | |
| #define _MACHINE aarch64 | |
| #define MACHINE "aarch64" | |
| #define _MACHINE_ARCH aarch64 | |
| #define MACHINE_ARCH "aarch64" | |
| #endif /* !_KERNEL */ | |
| #define MID_MACHINE MID_AARCH64 | |
| /* | |
| * 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) | |
| /* ARM-specific macro to align a stack pointer (downwards). */ | |
| #define STACKALIGNBYTES (8 - 1) | |
| #define STACKALIGN(p) ((u_int)(p) &~ STACKALIGNBYTES) | |
| #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ | |
| #define DEV_BSIZE (1 << DEV_BSHIFT) | |
| #define BLKDEV_IOSIZE 2048 | |
| #ifndef MAXPHYS | |
| #define MAXPHYS 65536 /* max I/O transfer size */ | |
| #endif | |
| /* | |
| * 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 */ | |
| #ifndef MCLSHIFT | |
| #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ | |
| /* 2K cluster can hold Ether frame */ | |
| #endif /* MCLSHIFT */ | |
| #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ | |
| #ifndef NMBCLUSTERS_MAX | |
| #define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES) /* Limit to 64MB for clusters */ | |
| #endif | |
| /* | |
| * Compatibility /dev/zero mapping. | |
| */ | |
| #ifdef _KERNEL | |
| #ifdef COMPAT_16 | |
| #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) | |
| #endif | |
| #endif /* _KERNEL */ | |
| #endif /* _AARCH64_PARAM_H_ */ |