arch/xtensa/include/asm/vectors.h

   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
  23 #define XCHAL_KIO_CACHED_VADDR          0xe0000000
  24 #define XCHAL_KIO_BYPASS_VADDR          0xf0000000
  25 #define XCHAL_KIO_PADDR                 0xf0000000
  26 #define XCHAL_KIO_SIZE                  0x10000000
  27
  28 #if defined(CONFIG_MMU)
  29
  30 /* Will Become VECBASE */
  31 #define VIRTUAL_MEMORY_ADDRESS          0xD0000000
  32
  33 /* Image Virtual Start Address */
  34 #define KERNELOFFSET                    0xD0003000
  35
  36 #if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
  37   /* MMU v3  - XCHAL_HAVE_PTP_MMU  == 1 */
  38   #define LOAD_MEMORY_ADDRESS           0x00003000
  39 #else
  40   /* MMU V2 -  XCHAL_HAVE_PTP_MMU  == 0 */
  41   #define LOAD_MEMORY_ADDRESS           0xD0003000
  42 #endif
  43
  44 #else /* !defined(CONFIG_MMU) */
  45   /* MMU Not being used - Virtual == Physical */
  46
  47   /* VECBASE */
  48   #define VIRTUAL_MEMORY_ADDRESS        0x00002000
  49
  50   /* Location of the start of the kernel text, _start */
  51   #define KERNELOFFSET                  0x00003000
  52
  53   /* Loaded just above possibly live vectors */
  54   #define LOAD_MEMORY_ADDRESS           0x00003000
  55
  56 #endif /* CONFIG_MMU */
  57
  58 #define XC_VADDR(offset)                (VIRTUAL_MEMORY_ADDRESS  + offset)
  59
  60 /* Used to set VECBASE register */
  61 #define VECBASE_RESET_VADDR             VIRTUAL_MEMORY_ADDRESS
  62
  63 #define RESET_VECTOR_VECOFS             (XCHAL_RESET_VECTOR_VADDR - \
  64                                                 VECBASE_RESET_VADDR)
  65 #define RESET_VECTOR_VADDR              XC_VADDR(RESET_VECTOR_VECOFS)
  66
  67 #define RESET_VECTOR1_VECOFS            (XCHAL_RESET_VECTOR1_VADDR - \
  68                                                 VECBASE_RESET_VADDR)
  69 #define RESET_VECTOR1_VADDR             XC_VADDR(RESET_VECTOR1_VECOFS)
  70
  71 #if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE
  72
  73 #define USER_VECTOR_VADDR               XC_VADDR(XCHAL_USER_VECOFS)
  74 #define KERNEL_VECTOR_VADDR             XC_VADDR(XCHAL_KERNEL_VECOFS)
  75 #define DOUBLEEXC_VECTOR_VADDR          XC_VADDR(XCHAL_DOUBLEEXC_VECOFS)
  76 #define WINDOW_VECTORS_VADDR            XC_VADDR(XCHAL_WINDOW_OF4_VECOFS)
  77 #define INTLEVEL2_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL2_VECOFS)
  78 #define INTLEVEL3_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL3_VECOFS)
  79 #define INTLEVEL4_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL4_VECOFS)
  80 #define INTLEVEL5_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL5_VECOFS)
  81 #define INTLEVEL6_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL6_VECOFS)
  82
  83 #define DEBUG_VECTOR_VADDR              XC_VADDR(XCHAL_DEBUG_VECOFS)
  84
  85 #define NMI_VECTOR_VADDR                XC_VADDR(XCHAL_NMI_VECOFS)
  86
  87 #define INTLEVEL7_VECTOR_VADDR          XC_VADDR(XCHAL_INTLEVEL7_VECOFS)
  88
  89 /*
  90  * These XCHAL_* #defines from varian/core.h
  91  * are not valid to use with V3 MMU. Non-XCHAL
  92  * constants are defined above and should be used.
  93  */
  94 #undef  XCHAL_VECBASE_RESET_VADDR
  95 #undef  XCHAL_RESET_VECTOR0_VADDR
  96 #undef  XCHAL_USER_VECTOR_VADDR
  97 #undef  XCHAL_KERNEL_VECTOR_VADDR
  98 #undef  XCHAL_DOUBLEEXC_VECTOR_VADDR
  99 #undef  XCHAL_WINDOW_VECTORS_VADDR
 100 #undef  XCHAL_INTLEVEL2_VECTOR_VADDR
 101 #undef  XCHAL_INTLEVEL3_VECTOR_VADDR
 102 #undef  XCHAL_INTLEVEL4_VECTOR_VADDR
 103 #undef  XCHAL_INTLEVEL5_VECTOR_VADDR
 104 #undef  XCHAL_INTLEVEL6_VECTOR_VADDR
 105 #undef  XCHAL_DEBUG_VECTOR_VADDR
 106 #undef  XCHAL_NMI_VECTOR_VADDR
 107 #undef  XCHAL_INTLEVEL7_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 DEBUG_VECTOR_VADDR              XCHAL_DEBUG_VECTOR_VADDR
 121
 122 #endif
 123
 124 #endif /* _XTENSA_VECTORS_H */