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> 22 #include <platform/hardware.h> 23 24 #if XCHAL_HAVE_PTP_MMU 25 #define XCHAL_KIO_CACHED_VADDR 0xe0000000 26 #define XCHAL_KIO_BYPASS_VADDR 0xf0000000 27 #define XCHAL_KIO_DEFAULT_PADDR 0xf0000000 28 #else 29 #define XCHAL_KIO_BYPASS_VADDR XCHAL_KIO_PADDR 30 #define XCHAL_KIO_DEFAULT_PADDR 0x90000000 31 #endif 32 #define XCHAL_KIO_SIZE 0x10000000 33 34 #if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_OF) 35 #define XCHAL_KIO_PADDR xtensa_get_kio_paddr() 36 #ifndef __ASSEMBLY__ 37 extern unsigned long xtensa_kio_paddr; 38 39 static inline unsigned long xtensa_get_kio_paddr(void) 40 { 41 return xtensa_kio_paddr; 42 } 43 #endif 44 #else 45 #define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR 46 #endif 47 48 #if defined(CONFIG_MMU) 49 50 /* Will Become VECBASE */ 51 #define VIRTUAL_MEMORY_ADDRESS 0xD0000000 52 53 /* Image Virtual Start Address */ 54 #define KERNELOFFSET 0xD0003000 55 56 #if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY 57 /* MMU v3 - XCHAL_HAVE_PTP_MMU == 1 */ 58 #define LOAD_MEMORY_ADDRESS 0x00003000 59 #else 60 /* MMU V2 - XCHAL_HAVE_PTP_MMU == 0 */ 61 #define LOAD_MEMORY_ADDRESS 0xD0003000 62 #endif 63 64 #define RESET_VECTOR1_VADDR (VIRTUAL_MEMORY_ADDRESS + \ 65 XCHAL_RESET_VECTOR1_PADDR) 66 67 #else /* !defined(CONFIG_MMU) */ 68 /* MMU Not being used - Virtual == Physical */ 69 70 /* VECBASE */ 71 #define VIRTUAL_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x2000) 72 73 /* Location of the start of the kernel text, _start */ 74 #define KERNELOFFSET (PLATFORM_DEFAULT_MEM_START + 0x3000) 75 76 /* Loaded just above possibly live vectors */ 77 #define LOAD_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x3000) 78 79 #define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR) 80 81 #endif /* CONFIG_MMU */ 82 83 #define XC_VADDR(offset) (VIRTUAL_MEMORY_ADDRESS + offset) 84 85 /* Used to set VECBASE register */ 86 #define VECBASE_RESET_VADDR VIRTUAL_MEMORY_ADDRESS 87 88 #if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE 89 90 #define USER_VECTOR_VADDR XC_VADDR(XCHAL_USER_VECOFS) 91 #define KERNEL_VECTOR_VADDR XC_VADDR(XCHAL_KERNEL_VECOFS) 92 #define DOUBLEEXC_VECTOR_VADDR XC_VADDR(XCHAL_DOUBLEEXC_VECOFS) 93 #define WINDOW_VECTORS_VADDR XC_VADDR(XCHAL_WINDOW_OF4_VECOFS) 94 #define INTLEVEL2_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL2_VECOFS) 95 #define INTLEVEL3_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL3_VECOFS) 96 #define INTLEVEL4_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL4_VECOFS) 97 #define INTLEVEL5_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL5_VECOFS) 98 #define INTLEVEL6_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL6_VECOFS) 99 100 #define DEBUG_VECTOR_VADDR XC_VADDR(XCHAL_DEBUG_VECOFS) 101 102 #define NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS) 103 104 #define INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS) 105 106 /* 107 * These XCHAL_* #defines from varian/core.h 108 * are not valid to use with V3 MMU. Non-XCHAL 109 * constants are defined above and should be used. 110 */ 111 #undef XCHAL_VECBASE_RESET_VADDR 112 #undef XCHAL_RESET_VECTOR0_VADDR 113 #undef XCHAL_USER_VECTOR_VADDR 114 #undef XCHAL_KERNEL_VECTOR_VADDR 115 #undef XCHAL_DOUBLEEXC_VECTOR_VADDR 116 #undef XCHAL_WINDOW_VECTORS_VADDR 117 #undef XCHAL_INTLEVEL2_VECTOR_VADDR 118 #undef XCHAL_INTLEVEL3_VECTOR_VADDR 119 #undef XCHAL_INTLEVEL4_VECTOR_VADDR 120 #undef XCHAL_INTLEVEL5_VECTOR_VADDR 121 #undef XCHAL_INTLEVEL6_VECTOR_VADDR 122 #undef XCHAL_DEBUG_VECTOR_VADDR 123 #undef XCHAL_NMI_VECTOR_VADDR 124 #undef XCHAL_INTLEVEL7_VECTOR_VADDR 125 126 #else 127 128 #define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR 129 #define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR 130 #define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR 131 #define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR 132 #define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR 133 #define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR 134 #define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR 135 #define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR 136 #define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR 137 #define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR 138 139 #endif 140 141 #endif /* _XTENSA_VECTORS_H */ 142