1 /* 2 * PowerPC cpu parameters for qemu. 3 * 4 * Copyright (c) 2007 Jocelyn Mayer 5 * SPDX-License-Identifier: LGPL-2.0-or-later 6 */ 7 8 #ifndef PPC_CPU_PARAM_H 9 #define PPC_CPU_PARAM_H 10 11 #ifdef TARGET_PPC64 12 /* 13 * Note that the official physical address space bits is 62-M where M 14 * is implementation dependent. I've not looked up M for the set of 15 * cpus we emulate at the system level. 16 */ 17 #define TARGET_PHYS_ADDR_SPACE_BITS 62 18 /* 19 * Note that the PPC environment architecture talks about 80 bit virtual 20 * addresses, with segmentation. Obviously that's not all visible to a 21 * single process, which is all we're concerned with here. 22 */ 23 # ifdef TARGET_ABI32 24 # define TARGET_VIRT_ADDR_SPACE_BITS 32 25 # else 26 # define TARGET_VIRT_ADDR_SPACE_BITS 64 27 # endif 28 #else 29 # define TARGET_PHYS_ADDR_SPACE_BITS 36 30 # define TARGET_VIRT_ADDR_SPACE_BITS 32 31 #endif 32 33 #ifdef CONFIG_USER_ONLY 34 /* Allow user-only to vary page size from 4k */ 35 # define TARGET_PAGE_BITS_VARY 36 #else 37 # define TARGET_PAGE_BITS 12 38 #endif 39 40 #define TARGET_INSN_START_EXTRA_WORDS 0 41 42 #endif 43