projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| e85e335f MF |
1 | /* |
| 2 | * arch/xtensa/include/asm/xchal_vaddr_remap.h | |
| 3 | * | |
| 4 | * Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual | |
| 5 | * Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU | |
| 6 | * mappings (KSEG at 0xD0000000 and KIO at 0XF0000000). | |
| 7 | * | |
| 8 | * This file is subject to the terms and conditions of the GNU General Public | |
| 9 | * License. See the file "COPYING" in the main directory of this archive | |
| 10 | * for more details. | |
| 11 | * | |
| 12 | * Copyright (C) 2008 - 2012 Tensilica Inc. | |
| 13 | * | |
| 14 | * Pete Delaney <piet@tensilica.com> | |
| 15 | * Marc Gauthier <marc@tensilica.com | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef _XTENSA_VECTORS_H | |
| 19 | #define _XTENSA_VECTORS_H | |
| 20 | ||
| 21 | #include <variant/core.h> | |
| 72bb305f | 22 | #include <platform/hardware.h> |
| f1883aa7 | 23 | #include <asm/kmem_layout.h> |
| e85e335f | 24 | |
| 260c64bb | 25 | #if XCHAL_HAVE_PTP_MMU |
| 4809bb46 BS |
26 | #define XCHAL_KIO_CACHED_VADDR 0xe0000000 |
| 27 | #define XCHAL_KIO_BYPASS_VADDR 0xf0000000 | |
| 6cb97111 | 28 | #define XCHAL_KIO_DEFAULT_PADDR 0xf0000000 |
| 260c64bb MF |
29 | #else |
| 30 | #define XCHAL_KIO_BYPASS_VADDR XCHAL_KIO_PADDR | |
| 31 | #define XCHAL_KIO_DEFAULT_PADDR 0x90000000 | |
| 32 | #endif | |
| 4809bb46 BS |
33 | #define XCHAL_KIO_SIZE 0x10000000 |
| 34 | ||
| 260c64bb | 35 | #if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_OF) |
| 6cb97111 | 36 | #define XCHAL_KIO_PADDR xtensa_get_kio_paddr() |
| 260c64bb MF |
37 | #ifndef __ASSEMBLY__ |
| 38 | extern unsigned long xtensa_kio_paddr; | |
| 39 | ||
| 40 | static inline unsigned long xtensa_get_kio_paddr(void) | |
| 41 | { | |
| 42 | return xtensa_kio_paddr; | |
| 43 | } | |
| 44 | #endif | |
| 6cb97111 BS |
45 | #else |
| 46 | #define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR | |
| 47 | #endif | |
| 48 | ||
| e85e335f MF |
49 | #if defined(CONFIG_MMU) |
| 50 | ||
| a9f2fc62 | 51 | #if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY |
| e85e335f | 52 | /* Image Virtual Start Address */ |
| a9f2fc62 MF |
53 | #define KERNELOFFSET (XCHAL_KSEG_CACHED_VADDR + \ |
| 54 | CONFIG_KERNEL_LOAD_ADDRESS - \ | |
| 55 | XCHAL_KSEG_PADDR) | |
| e85e335f | 56 | #else |
| a9f2fc62 | 57 | #define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS |
| e85e335f MF |
58 | #endif |
| 59 | ||
| 60 | #else /* !defined(CONFIG_MMU) */ | |
| 61 | /* MMU Not being used - Virtual == Physical */ | |
| 62 | ||
| a9f2fc62 MF |
63 | /* Location of the start of the kernel text, _start */ |
| 64 | #define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS | |
| e85e335f | 65 | |
| ab45fb14 | 66 | |
| e85e335f MF |
67 | #endif /* CONFIG_MMU */ |
| 68 | ||
| a9f2fc62 | 69 | #define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR) |
| b46dcfa3 | 70 | #ifdef CONFIG_VECTORS_OFFSET |
| a9f2fc62 | 71 | #define VECBASE_VADDR (KERNELOFFSET - CONFIG_VECTORS_OFFSET) |
| b46dcfa3 MF |
72 | #else |
| 73 | #define VECBASE_VADDR _vecbase | |
| 74 | #endif | |
| e85e335f | 75 | |
| f0a34615 | 76 | #if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE |
| e85e335f | 77 | |
| a9f2fc62 | 78 | #define VECTOR_VADDR(offset) (VECBASE_VADDR + offset) |
| e85e335f | 79 | |
| a9f2fc62 MF |
80 | #define USER_VECTOR_VADDR VECTOR_VADDR(XCHAL_USER_VECOFS) |
| 81 | #define KERNEL_VECTOR_VADDR VECTOR_VADDR(XCHAL_KERNEL_VECOFS) | |
| 82 | #define DOUBLEEXC_VECTOR_VADDR VECTOR_VADDR(XCHAL_DOUBLEEXC_VECOFS) | |
| 83 | #define WINDOW_VECTORS_VADDR VECTOR_VADDR(XCHAL_WINDOW_OF4_VECOFS) | |
| 84 | #define INTLEVEL2_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL2_VECOFS) | |
| 85 | #define INTLEVEL3_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL3_VECOFS) | |
| 86 | #define INTLEVEL4_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL4_VECOFS) | |
| 87 | #define INTLEVEL5_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL5_VECOFS) | |
| 88 | #define INTLEVEL6_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL6_VECOFS) | |
| 89 | #define INTLEVEL7_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL7_VECOFS) | |
| 90 | #define DEBUG_VECTOR_VADDR VECTOR_VADDR(XCHAL_DEBUG_VECOFS) | |
| e85e335f MF |
91 | |
| 92 | /* | |
| 93 | * These XCHAL_* #defines from varian/core.h | |
| 94 | * are not valid to use with V3 MMU. Non-XCHAL | |
| 95 | * constants are defined above and should be used. | |
| 96 | */ | |
| 97 | #undef XCHAL_VECBASE_RESET_VADDR | |
| e85e335f MF |
98 | #undef XCHAL_USER_VECTOR_VADDR |
| 99 | #undef XCHAL_KERNEL_VECTOR_VADDR | |
| 100 | #undef XCHAL_DOUBLEEXC_VECTOR_VADDR | |
| 101 | #undef XCHAL_WINDOW_VECTORS_VADDR | |
| 102 | #undef XCHAL_INTLEVEL2_VECTOR_VADDR | |
| 103 | #undef XCHAL_INTLEVEL3_VECTOR_VADDR | |
| 104 | #undef XCHAL_INTLEVEL4_VECTOR_VADDR | |
| 105 | #undef XCHAL_INTLEVEL5_VECTOR_VADDR | |
| 106 | #undef XCHAL_INTLEVEL6_VECTOR_VADDR | |
| e85e335f | 107 | #undef XCHAL_INTLEVEL7_VECTOR_VADDR |
| a9f2fc62 | 108 | #undef XCHAL_DEBUG_VECTOR_VADDR |
| e85e335f MF |
109 | |
| 110 | #else | |
| 111 | ||
| 112 | #define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR | |
| 113 | #define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR | |
| 114 | #define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR | |
| 115 | #define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR | |
| 116 | #define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR | |
| 117 | #define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR | |
| 118 | #define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR | |
| 119 | #define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR | |
| 120 | #define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR | |
| a9f2fc62 | 121 | #define INTLEVEL7_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR |
| e85e335f MF |
122 | #define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR |
| 123 | ||
| 124 | #endif | |
| 125 | ||
| 126 | #endif /* _XTENSA_VECTORS_H */ |