arch/mips/include/asm/sn/sn0/kldir.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
   4  *
   5  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
   6  * Copyright (C) 1999, 2000 by Ralf Baechle
   7  */
   8 #ifndef _ASM_SN_SN0_KLDIR_H
   9 #define _ASM_SN_SN0_KLDIR_H
  10
  11
  12 /*
  13  * The kldir memory area resides at a fixed place in each node's memory and
  14  * provides pointers to most other IP27 memory areas.  This allows us to
  15  * resize and/or relocate memory areas at a later time without breaking all
  16  * firmware and kernels that use them.  Indices in the array are
  17  * permanently dedicated to areas listed below.  Some memory areas (marked
  18  * below) reside at a permanently fixed location, but are included in the
  19  * directory for completeness.
  20  */
  21
  22 /*
  23  * The upper portion of the memory map applies during boot
  24  * only and is overwritten by IRIX/SYMMON.
  25  *
  26  *                                    MEMORY MAP PER NODE
  27  *
  28  * 0x2000000 (32M)         +-----------------------------------------+
  29  *                         |      IO6 BUFFERS FOR FLASH ENET IOC3    |
  30  * 0x1F80000 (31.5M)       +-----------------------------------------+
  31  *                         |      IO6 TEXT/DATA/BSS/stack            |
  32  * 0x1C00000 (30M)         +-----------------------------------------+
  33  *                         |      IO6 PROM DEBUG TEXT/DATA/BSS/stack |
  34  * 0x0800000 (28M)         +-----------------------------------------+
  35  *                         |      IP27 PROM TEXT/DATA/BSS/stack      |
  36  * 0x1B00000 (27M)         +-----------------------------------------+
  37  *                         |      IP27 CFG                           |
  38  * 0x1A00000 (26M)         +-----------------------------------------+
  39  *                         |      Graphics PROM                      |
  40  * 0x1800000 (24M)         +-----------------------------------------+
  41  *                         |      3rd Party PROM drivers             |
  42  * 0x1600000 (22M)         +-----------------------------------------+
  43  *                         |                                         |
  44  *                         |      Free                               |
  45  *                         |                                         |
  46  *                         +-----------------------------------------+
  47  *                         |      UNIX DEBUG Version                 |
  48  * 0x190000 (2M--)         +-----------------------------------------+
  49  *                         |      SYMMON                             |
  50  *                         |      (For UNIX Debug only)              |
  51  * 0x34000 (208K)          +-----------------------------------------+
  52  *                         |      SYMMON STACK [NUM_CPU_PER_NODE]    |
  53  *                         |      (For UNIX Debug only)              |
  54  * 0x25000 (148K)          +-----------------------------------------+
  55  *                         |      KLCONFIG - II (temp)               |
  56  *                         |                                         |
  57  *                         |    ----------------------------         |
  58  *                         |                                         |
  59  *                         |      UNIX NON-DEBUG Version             |
  60  * 0x19000 (100K)          +-----------------------------------------+
  61  *
  62  *
  63  * The lower portion of the memory map contains information that is
  64  * permanent and is used by the IP27PROM, IO6PROM and IRIX.
  65  *
  66  * 0x19000 (100K)          +-----------------------------------------+
  67  *                         |                                         |
  68  *                         |      PI Error Spools (32K)              |
  69  *                         |                                         |
  70  * 0x12000 (72K)           +-----------------------------------------+
  71  *                         |      Unused                             |
  72  * 0x11c00 (71K)           +-----------------------------------------+
  73  *                         |      CPU 1 NMI Eframe area              |
  74  * 0x11a00 (70.5K)         +-----------------------------------------+
  75  *                         |      CPU 0 NMI Eframe area              |
  76  * 0x11800 (70K)           +-----------------------------------------+
  77  *                         |      CPU 1 NMI Register save area       |
  78  * 0x11600 (69.5K)         +-----------------------------------------+
  79  *                         |      CPU 0 NMI Register save area       |
  80  * 0x11400 (69K)           +-----------------------------------------+
  81  *                         |      GDA (1k)                           |
  82  * 0x11000 (68K)           +-----------------------------------------+
  83  *                         |      Early cache Exception stack        |
  84  *                         |             and/or                      |
  85  *                         |      kernel/io6prom nmi registers       |
  86  * 0x10800  (66k)          +-----------------------------------------+
  87  *                         |      cache error eframe                 |
  88  * 0x10400 (65K)           +-----------------------------------------+
  89  *                         |      Exception Handlers (UALIAS copy)   |
  90  * 0x10000 (64K)           +-----------------------------------------+
  91  *                         |                                         |
  92  *                         |                                         |
  93  *                         |      KLCONFIG - I (permanent) (48K)     |
  94  *                         |                                         |
  95  *                         |                                         |
  96  *                         |                                         |
  97  * 0x4000 (16K)            +-----------------------------------------+
  98  *                         |      NMI Handler (Protected Page)       |
  99  * 0x3000 (12K)            +-----------------------------------------+
 100  *                         |      ARCS PVECTORS (master node only)   |
 101  * 0x2c00 (11K)            +-----------------------------------------+
 102  *                         |      ARCS TVECTORS (master node only)   |
 103  * 0x2800 (10K)            +-----------------------------------------+
 104  *                         |      LAUNCH [NUM_CPU]                   |
 105  * 0x2400 (9K)             +-----------------------------------------+
 106  *                         |      Low memory directory (KLDIR)       |
 107  * 0x2000 (8K)             +-----------------------------------------+
 108  *                         |      ARCS SPB (1K)                      |
 109  * 0x1000 (4K)             +-----------------------------------------+
 110  *                         |      Early cache Exception stack        |
 111  *                         |             and/or                      |
 112  *                         |      kernel/io6prom nmi registers       |
 113  * 0x800  (2k)             +-----------------------------------------+
 114  *                         |      cache error eframe                 |
 115  * 0x400 (1K)              +-----------------------------------------+
 116  *                         |      Exception Handlers                 |
 117  * 0x0   (0K)              +-----------------------------------------+
 118  */
 119
 120 /*
 121  * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
 122  * we define here.  Since it's set up in the prom.  We can't redefine it later
 123  * and expect more space to be allocated.  The way to find out the true size
 124  * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
 125  * for a particular node.
 126  */
 127 #define SYMMON_STACK_SIZE               0x8000
 128
 129 #if defined(PROM)
 130
 131 /*
 132  * These defines are prom version dependent.  No code other than the IP27
 133  * prom should attempt to use these values.
 134  */
 135 #define IP27_LAUNCH_OFFSET              0x2400
 136 #define IP27_LAUNCH_SIZE                0x400
 137 #define IP27_LAUNCH_COUNT               2
 138 #define IP27_LAUNCH_STRIDE              0x200
 139
 140 #define IP27_KLCONFIG_OFFSET            0x4000
 141 #define IP27_KLCONFIG_SIZE              0xc000
 142 #define IP27_KLCONFIG_COUNT             1
 143 #define IP27_KLCONFIG_STRIDE            0
 144
 145 #define IP27_NMI_OFFSET                 0x3000
 146 #define IP27_NMI_SIZE                   0x40
 147 #define IP27_NMI_COUNT                  2
 148 #define IP27_NMI_STRIDE                 0x40
 149
 150 #define IP27_PI_ERROR_OFFSET            0x12000
 151 #define IP27_PI_ERROR_SIZE              0x4000
 152 #define IP27_PI_ERROR_COUNT             1
 153 #define IP27_PI_ERROR_STRIDE            0
 154
 155 #define IP27_SYMMON_STK_OFFSET          0x25000
 156 #define IP27_SYMMON_STK_SIZE            0xe000
 157 #define IP27_SYMMON_STK_COUNT           2
 158 /* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
 159 #define IP27_SYMMON_STK_STRIDE          0x7000
 160
 161 #define IP27_FREEMEM_OFFSET             0x19000
 162 #define IP27_FREEMEM_SIZE               -1
 163 #define IP27_FREEMEM_COUNT              1
 164 #define IP27_FREEMEM_STRIDE             0
 165
 166 #endif /* PROM */
 167 /*
 168  * There will be only one of these in a partition so the IO6 must set it up.
 169  */
 170 #define IO6_GDA_OFFSET                  0x11000
 171 #define IO6_GDA_SIZE                    0x400
 172 #define IO6_GDA_COUNT                   1
 173 #define IO6_GDA_STRIDE                  0
 174
 175 /*
 176  * save area of kernel nmi regs in the prom format
 177  */
 178 #define IP27_NMI_KREGS_OFFSET           0x11400
 179 #define IP27_NMI_KREGS_CPU_SIZE         0x200
 180 /*
 181  * save area of kernel nmi regs in eframe format
 182  */
 183 #define IP27_NMI_EFRAME_OFFSET          0x11800
 184 #define IP27_NMI_EFRAME_SIZE            0x200
 185
 186 #endif /* _ASM_SN_SN0_KLDIR_H */