1 /* 2 * ARM cpu parameters for qemu. 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * SPDX-License-Identifier: LGPL-2.0-or-later 6 */ 7 8 #ifndef ARM_CPU_PARAM_H 9 #define ARM_CPU_PARAM_H 10 11 #ifdef TARGET_AARCH64 12 # define TARGET_PHYS_ADDR_SPACE_BITS 52 13 # define TARGET_VIRT_ADDR_SPACE_BITS 52 14 #else 15 # define TARGET_PHYS_ADDR_SPACE_BITS 40 16 # define TARGET_VIRT_ADDR_SPACE_BITS 32 17 #endif 18 19 #ifdef CONFIG_USER_ONLY 20 # if defined(TARGET_AARCH64) && defined(CONFIG_LINUX) 21 /* Allow user-only to vary page size from 4k */ 22 # define TARGET_PAGE_BITS_VARY 23 # else 24 # define TARGET_PAGE_BITS 12 25 # endif 26 #else /* !CONFIG_USER_ONLY */ 27 /* 28 * ARMv7 and later CPUs have 4K pages minimum, but ARMv5 and v6 29 * have to support 1K tiny pages. 30 */ 31 # define TARGET_PAGE_BITS_VARY 32 # define TARGET_PAGE_BITS_LEGACY 10 33 #endif /* !CONFIG_USER_ONLY */ 34 35 /* 36 * ARM-specific extra insn start words: 37 * 1: Conditional execution bits 38 * 2: Partial exception syndrome for data aborts 39 */ 40 #define TARGET_INSN_START_EXTRA_WORDS 2 41 42 #endif 43