| Daniel Schwierzeck | b01d3e1 | 2016-01-12 21:48:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle |
| 3 | * Copyright (C) 2000, 2002 Maciej W. Rozycki |
| 4 | * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc. |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0 |
| 7 | */ |
| 8 | #ifndef _ASM_MACH_GENERIC_SPACES_H |
| 9 | #define _ASM_MACH_GENERIC_SPACES_H |
| 10 | |
| 11 | #include <asm/const.h> |
| 12 | |
| 13 | /* |
| 14 | * This gives the physical RAM offset. |
| 15 | */ |
| 16 | #ifndef PHYS_OFFSET |
| 17 | #define PHYS_OFFSET _AC(0, UL) |
| 18 | #endif |
| 19 | |
| 20 | #ifdef CONFIG_32BIT |
| 21 | #ifdef CONFIG_KVM_GUEST |
| 22 | #define CAC_BASE _AC(0x40000000, UL) |
| 23 | #else |
| 24 | #define CAC_BASE _AC(0x80000000, UL) |
| 25 | #endif |
| 26 | #ifndef IO_BASE |
| 27 | #define IO_BASE _AC(0xa0000000, UL) |
| 28 | #endif |
| 29 | #ifndef UNCAC_BASE |
| 30 | #define UNCAC_BASE _AC(0xa0000000, UL) |
| 31 | #endif |
| 32 | |
| 33 | #ifndef MAP_BASE |
| 34 | #ifdef CONFIG_KVM_GUEST |
| 35 | #define MAP_BASE _AC(0x60000000, UL) |
| 36 | #else |
| 37 | #define MAP_BASE _AC(0xc0000000, UL) |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * Memory above this physical address will be considered highmem. |
| 43 | */ |
| 44 | #ifndef HIGHMEM_START |
| 45 | #define HIGHMEM_START _AC(0x20000000, UL) |
| 46 | #endif |
| 47 | |
| 48 | #endif /* CONFIG_32BIT */ |
| 49 | |
| 50 | #ifdef CONFIG_64BIT |
| 51 | |
| 52 | #ifndef CAC_BASE |
| 53 | #ifdef CONFIG_DMA_NONCOHERENT |
| 54 | #define CAC_BASE _AC(0x9800000000000000, UL) |
| 55 | #else |
| 56 | #define CAC_BASE _AC(0xa800000000000000, UL) |
| 57 | #endif |
| 58 | #endif |
| 59 | |
| 60 | #ifndef IO_BASE |
| 61 | #define IO_BASE _AC(0x9000000000000000, UL) |
| 62 | #endif |
| 63 | |
| 64 | #ifndef UNCAC_BASE |
| 65 | #define UNCAC_BASE _AC(0x9000000000000000, UL) |
| 66 | #endif |
| 67 | |
| 68 | #ifndef MAP_BASE |
| 69 | #define MAP_BASE _AC(0xc000000000000000, UL) |
| 70 | #endif |
| 71 | |
| 72 | /* |
| 73 | * Memory above this physical address will be considered highmem. |
| 74 | * Fixme: 59 bits is a fictive number and makes assumptions about processors |
| 75 | * in the distant future. Nobody will care for a few years :-) |
| 76 | */ |
| 77 | #ifndef HIGHMEM_START |
| 78 | #define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) |
| 79 | #endif |
| 80 | |
| 81 | #define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) |
| 82 | #define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) |
| 83 | #define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) |
| 84 | |
| 85 | #endif /* CONFIG_64BIT */ |
| 86 | |
| 87 | /* |
| 88 | * This handles the memory map. |
| 89 | */ |
| 90 | #ifndef PAGE_OFFSET |
| 91 | #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) |
| 92 | #endif |
| 93 | |
| 94 | #ifndef FIXADDR_TOP |
| 95 | #ifdef CONFIG_KVM_GUEST |
| 96 | #define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000) |
| 97 | #else |
| 98 | #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) |
| 99 | #endif |
| 100 | #endif |
| 101 | |
| 102 | #endif /* __ASM_MACH_GENERIC_SPACES_H */ |