/* $NetBSD: param.h,v 1.17 2026/05/04 18:29:02 skrll Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * 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 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 _AARCH64_PARAM_H_ #define _AARCH64_PARAM_H_ #ifdef __aarch64__ #ifdef _KERNEL_OPT #include "opt_cputypes.h" #include "opt_param.h" #endif /* * Machine dependent constants for all Arm v8 processors */ /* * For KERNEL code: * MACHINE must be defined by the individual port. This is so that * uname returns the correct thing, etc. * * For non-KERNEL code: * If ELF, MACHINE and MACHINE_ARCH are forced to "aarch64{,eb}". */ #if defined(_KERNEL) # ifndef MACHINE_ARCH /* XXX For now */ # ifdef __AARCH64EB__ # define _MACHINE_ARCH aarch64eb # define MACHINE_ARCH "aarch64eb" # define _MACHINE32_ARCH earmv7hfeb # define MACHINE32_ARCH "earmv7hfeb" # else # define _MACHINE_ARCH aarch64 # define MACHINE_ARCH "aarch64" # define _MACHINE32_ARCH earmv7hf # define MACHINE32_ARCH "earmv7hf" # endif /* __AARCH64EB__ */ # endif /* MACHINE_ARCH */ #else # undef _MACHINE # undef MACHINE # undef _MACHINE_ARCH # undef MACHINE_ARCH # undef _MACHINE32_ARCH # undef MACHINE32_ARCH # define _MACHINE aarch64 # define MACHINE "aarch64" # ifdef __AARCH64EB__ # define _MACHINE_ARCH aarch64eb # define MACHINE_ARCH "aarch64eb" # define _MACHINE32_ARCH earmv7hfeb # define MACHINE32_ARCH "earmv7hfeb" # else # define _MACHINE_ARCH aarch64 # define MACHINE_ARCH "aarch64" # define _MACHINE32_ARCH earmv7hf # define MACHINE32_ARCH "earmv7hf" # endif /* __AARCH64EB__ */ #endif /* !_KERNEL */ #define MID_MACHINE MID_AARCH64 /* AARCH64-specific macro to align a stack pointer (downwards). */ #define STACK_ALIGNBYTES (16 - 1) #define ALIGNBYTES32 (8 - 1) #define ALIGN32(p) \ (((uintptr_t)(p) + ALIGNBYTES32) & ~ALIGNBYTES32) #define NKMEMPAGES_MIN_DEFAULT ((128UL * 1024 * 1024) >> PAGE_SHIFT) #define NKMEMPAGES_MAX_UNLIMITED 1 #ifdef AARCH64_PAGE_SHIFT #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 #error AARCH64_PAGE_SHIFT contains an unsupported value. #endif #define PGSHIFT AARCH64_PAGE_SHIFT #else #define PGSHIFT 12 #endif #define NBPG (1 << PGSHIFT) #define PGOFSET (NBPG - 1) /* * Constants related to network buffer management. * MCLBYTES must be no larger than NBPG (the software page size), and * NBPG % MCLBYTES must be zero. */ #if PGSHIFT > 12 #define MSIZE 256 /* size of an mbuf */ #else #define MSIZE 512 /* size of an mbuf */ #endif #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 NFS_RSIZE #define NFS_RSIZE 32768 /* Default NFS read data size */ #endif #ifndef NFS_WSIZE #define NFS_WSIZE 32768 /* Default NFS write data size */ #endif #ifndef MSGBUFSIZE #define MSGBUFSIZE 65536 /* default message buffer size */ #endif #define COHERENCY_UNIT 128 #define CACHE_LINE_SIZE 128 #define MAXCPUS 256 #ifdef _KERNEL #ifndef __HIDE_DELAY void delay(unsigned int); #define DELAY(x) delay(x) #endif /* * Compatibility /dev/zero mapping. */ #ifdef COMPAT_16 #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) #endif #endif /* _KERNEL */ #define aarch64_btop(x) ((unsigned long)(x) >> PGSHIFT) #define aarch64_ptob(x) ((unsigned long)(x) << PGSHIFT) #define aarch64_trunc_page(x) ((unsigned long)(x) & ~PGSHIFT) #define aarch64_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) /* compatibility for arm */ #define arm_btop(x) aarch64_btop(x) #define arm_ptob(x) aarch64_ptob(x) #elif defined(__arm__) #include <arm/param.h> #endif /* __aarch64__/__arm__ */ #endif /* _AARCH64_PARAM_H_ */
