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#define XCHAL_KIO_CACHED_VADDR 0xe0000000 25#define XCHAL_KIO_BYPASS_VADDR 0xf0000000 26#define XCHAL_KIO_DEFAULT_PADDR 0xf0000000 27#define XCHAL_KIO_SIZE 0x10000000 28 29#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_OF) 30#define XCHAL_KIO_PADDR xtensa_get_kio_paddr() 31#else 32#define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR 33#endif 34 35#if defined(CONFIG_MMU) 36 37/* Will Become VECBASE */ 38#define VIRTUAL_MEMORY_ADDRESS 0xD0000000 39 40/* Image Virtual Start Address */ 41#define KERNELOFFSET 0xD0003000 42 43#if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY 44 /* MMU v3 - XCHAL_HAVE_PTP_MMU == 1 */ 45 #define LOAD_MEMORY_ADDRESS 0x00003000 46#else 47 /* MMU V2 - XCHAL_HAVE_PTP_MMU == 0 */ 48 #define LOAD_MEMORY_ADDRESS 0xD0003000 49#endif 50 51#else /* !defined(CONFIG_MMU) */ 52 /* MMU Not being used - Virtual == Physical */ 53 54 /* VECBASE */ 55 #define VIRTUAL_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x2000) 56 57 /* Location of the start of the kernel text, _start */ 58 #define KERNELOFFSET (PLATFORM_DEFAULT_MEM_START + 0x3000) 59 60 /* Loaded just above possibly live vectors */ 61 #define LOAD_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x3000) 62 63#endif /* CONFIG_MMU */ 64 65#define XC_VADDR(offset) (VIRTUAL_MEMORY_ADDRESS + offset) 66 67/* Used to set VECBASE register */ 68#define VECBASE_RESET_VADDR VIRTUAL_MEMORY_ADDRESS 69 70#define RESET_VECTOR_VECOFS (XCHAL_RESET_VECTOR_VADDR - \ 71 VECBASE_RESET_VADDR) 72#define RESET_VECTOR_VADDR XC_VADDR(RESET_VECTOR_VECOFS) 73 74#define RESET_VECTOR1_VECOFS (XCHAL_RESET_VECTOR1_VADDR - \ 75 VECBASE_RESET_VADDR) 76#define RESET_VECTOR1_VADDR XC_VADDR(RESET_VECTOR1_VECOFS) 77 78#if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE 79 80#define USER_VECTOR_VADDR XC_VADDR(XCHAL_USER_VECOFS) 81#define KERNEL_VECTOR_VADDR XC_VADDR(XCHAL_KERNEL_VECOFS) 82#define DOUBLEEXC_VECTOR_VADDR XC_VADDR(XCHAL_DOUBLEEXC_VECOFS) 83#define WINDOW_VECTORS_VADDR XC_VADDR(XCHAL_WINDOW_OF4_VECOFS) 84#define INTLEVEL2_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL2_VECOFS) 85#define INTLEVEL3_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL3_VECOFS) 86#define INTLEVEL4_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL4_VECOFS) 87#define INTLEVEL5_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL5_VECOFS) 88#define INTLEVEL6_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL6_VECOFS) 89 90#define DEBUG_VECTOR_VADDR XC_VADDR(XCHAL_DEBUG_VECOFS) 91 92#define NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS) 93 94#define INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS) 95 96/* 97 * These XCHAL_* #defines from varian/core.h 98 * are not valid to use with V3 MMU. Non-XCHAL 99 * constants are defined above and should be used. 100 */ 101#undef XCHAL_VECBASE_RESET_VADDR 102#undef XCHAL_RESET_VECTOR0_VADDR 103#undef XCHAL_USER_VECTOR_VADDR 104#undef XCHAL_KERNEL_VECTOR_VADDR 105#undef XCHAL_DOUBLEEXC_VECTOR_VADDR 106#undef XCHAL_WINDOW_VECTORS_VADDR 107#undef XCHAL_INTLEVEL2_VECTOR_VADDR 108#undef XCHAL_INTLEVEL3_VECTOR_VADDR 109#undef XCHAL_INTLEVEL4_VECTOR_VADDR 110#undef XCHAL_INTLEVEL5_VECTOR_VADDR 111#undef XCHAL_INTLEVEL6_VECTOR_VADDR 112#undef XCHAL_DEBUG_VECTOR_VADDR 113#undef XCHAL_NMI_VECTOR_VADDR 114#undef XCHAL_INTLEVEL7_VECTOR_VADDR 115 116#else 117 118#define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR 119#define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR 120#define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR 121#define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR 122#define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR 123#define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR 124#define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR 125#define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR 126#define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR 127#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR 128 129#endif 130 131#endif /* _XTENSA_VECTORS_H */ 132