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 <asm/core.h> 22#include <asm/kmem_layout.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__ 37extern unsigned long xtensa_kio_paddr; 38 39static 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#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY 51/* Image Virtual Start Address */ 52#define KERNELOFFSET (XCHAL_KSEG_CACHED_VADDR + \ 53 CONFIG_KERNEL_LOAD_ADDRESS - \ 54 XCHAL_KSEG_PADDR) 55#else 56#define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS 57#endif 58 59#else /* !defined(CONFIG_MMU) */ 60 /* MMU Not being used - Virtual == Physical */ 61 62/* Location of the start of the kernel text, _start */ 63#define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS 64 65 66#endif /* CONFIG_MMU */ 67 68#define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR) 69#ifdef CONFIG_VECTORS_OFFSET 70#define VECBASE_VADDR (KERNELOFFSET - CONFIG_VECTORS_OFFSET) 71#else 72#define VECBASE_VADDR _vecbase 73#endif 74 75#if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE 76 77#define VECTOR_VADDR(offset) (VECBASE_VADDR + offset) 78 79#define USER_VECTOR_VADDR VECTOR_VADDR(XCHAL_USER_VECOFS) 80#define KERNEL_VECTOR_VADDR VECTOR_VADDR(XCHAL_KERNEL_VECOFS) 81#define DOUBLEEXC_VECTOR_VADDR VECTOR_VADDR(XCHAL_DOUBLEEXC_VECOFS) 82#define WINDOW_VECTORS_VADDR VECTOR_VADDR(XCHAL_WINDOW_OF4_VECOFS) 83#define INTLEVEL2_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL2_VECOFS) 84#define INTLEVEL3_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL3_VECOFS) 85#define INTLEVEL4_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL4_VECOFS) 86#define INTLEVEL5_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL5_VECOFS) 87#define INTLEVEL6_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL6_VECOFS) 88#define INTLEVEL7_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL7_VECOFS) 89#define DEBUG_VECTOR_VADDR VECTOR_VADDR(XCHAL_DEBUG_VECOFS) 90 91/* 92 * These XCHAL_* #defines from varian/core.h 93 * are not valid to use with V3 MMU. Non-XCHAL 94 * constants are defined above and should be used. 95 */ 96#undef XCHAL_VECBASE_RESET_VADDR 97#undef XCHAL_USER_VECTOR_VADDR 98#undef XCHAL_KERNEL_VECTOR_VADDR 99#undef XCHAL_DOUBLEEXC_VECTOR_VADDR 100#undef XCHAL_WINDOW_VECTORS_VADDR 101#undef XCHAL_INTLEVEL2_VECTOR_VADDR 102#undef XCHAL_INTLEVEL3_VECTOR_VADDR 103#undef XCHAL_INTLEVEL4_VECTOR_VADDR 104#undef XCHAL_INTLEVEL5_VECTOR_VADDR 105#undef XCHAL_INTLEVEL6_VECTOR_VADDR 106#undef XCHAL_INTLEVEL7_VECTOR_VADDR 107#undef XCHAL_DEBUG_VECTOR_VADDR 108 109#else 110 111#define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR 112#define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR 113#define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR 114#define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR 115#define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR 116#define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR 117#define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR 118#define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR 119#define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR 120#define INTLEVEL7_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR 121#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR 122 123#endif 124 125#endif /* _XTENSA_VECTORS_H */ 126