1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle 3*4882a593Smuzhiyun * Copyright (C) 2000, 2002 Maciej W. Rozycki 4*4882a593Smuzhiyun * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun #ifndef _ASM_MACH_GENERIC_SPACES_H 9*4882a593Smuzhiyun #define _ASM_MACH_GENERIC_SPACES_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <asm/const.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * This gives the physical RAM offset. 15*4882a593Smuzhiyun */ 16*4882a593Smuzhiyun #ifndef PHYS_OFFSET 17*4882a593Smuzhiyun #define PHYS_OFFSET _AC(0, UL) 18*4882a593Smuzhiyun #endif 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #ifdef CONFIG_32BIT 21*4882a593Smuzhiyun #ifdef CONFIG_KVM_GUEST 22*4882a593Smuzhiyun #define CAC_BASE _AC(0x40000000, UL) 23*4882a593Smuzhiyun #else 24*4882a593Smuzhiyun #define CAC_BASE _AC(0x80000000, UL) 25*4882a593Smuzhiyun #endif 26*4882a593Smuzhiyun #ifndef IO_BASE 27*4882a593Smuzhiyun #define IO_BASE _AC(0xa0000000, UL) 28*4882a593Smuzhiyun #endif 29*4882a593Smuzhiyun #ifndef UNCAC_BASE 30*4882a593Smuzhiyun #define UNCAC_BASE _AC(0xa0000000, UL) 31*4882a593Smuzhiyun #endif 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #ifndef MAP_BASE 34*4882a593Smuzhiyun #ifdef CONFIG_KVM_GUEST 35*4882a593Smuzhiyun #define MAP_BASE _AC(0x60000000, UL) 36*4882a593Smuzhiyun #else 37*4882a593Smuzhiyun #define MAP_BASE _AC(0xc0000000, UL) 38*4882a593Smuzhiyun #endif 39*4882a593Smuzhiyun #endif 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun /* 42*4882a593Smuzhiyun * Memory above this physical address will be considered highmem. 43*4882a593Smuzhiyun */ 44*4882a593Smuzhiyun #ifndef HIGHMEM_START 45*4882a593Smuzhiyun #define HIGHMEM_START _AC(0x20000000, UL) 46*4882a593Smuzhiyun #endif 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #endif /* CONFIG_32BIT */ 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #ifdef CONFIG_64BIT 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #ifndef CAC_BASE 53*4882a593Smuzhiyun #ifdef CONFIG_DMA_NONCOHERENT 54*4882a593Smuzhiyun #define CAC_BASE _AC(0x9800000000000000, UL) 55*4882a593Smuzhiyun #else 56*4882a593Smuzhiyun #define CAC_BASE _AC(0xa800000000000000, UL) 57*4882a593Smuzhiyun #endif 58*4882a593Smuzhiyun #endif 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun #ifndef IO_BASE 61*4882a593Smuzhiyun #define IO_BASE _AC(0x9000000000000000, UL) 62*4882a593Smuzhiyun #endif 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #ifndef UNCAC_BASE 65*4882a593Smuzhiyun #define UNCAC_BASE _AC(0x9000000000000000, UL) 66*4882a593Smuzhiyun #endif 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun #ifndef MAP_BASE 69*4882a593Smuzhiyun #define MAP_BASE _AC(0xc000000000000000, UL) 70*4882a593Smuzhiyun #endif 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* 73*4882a593Smuzhiyun * Memory above this physical address will be considered highmem. 74*4882a593Smuzhiyun * Fixme: 59 bits is a fictive number and makes assumptions about processors 75*4882a593Smuzhiyun * in the distant future. Nobody will care for a few years :-) 76*4882a593Smuzhiyun */ 77*4882a593Smuzhiyun #ifndef HIGHMEM_START 78*4882a593Smuzhiyun #define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) 79*4882a593Smuzhiyun #endif 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) 82*4882a593Smuzhiyun #define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) 83*4882a593Smuzhiyun #define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun #endif /* CONFIG_64BIT */ 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun /* 88*4882a593Smuzhiyun * This handles the memory map. 89*4882a593Smuzhiyun */ 90*4882a593Smuzhiyun #ifndef PAGE_OFFSET 91*4882a593Smuzhiyun #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) 92*4882a593Smuzhiyun #endif 93*4882a593Smuzhiyun 94*4882a593Smuzhiyun #ifndef FIXADDR_TOP 95*4882a593Smuzhiyun #ifdef CONFIG_KVM_GUEST 96*4882a593Smuzhiyun #define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000) 97*4882a593Smuzhiyun #else 98*4882a593Smuzhiyun #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) 99*4882a593Smuzhiyun #endif 100*4882a593Smuzhiyun #endif 101*4882a593Smuzhiyun 102*4882a593Smuzhiyun #endif /* __ASM_MACH_GENERIC_SPACES_H */ 103