src/target/openrisc/or1k.h

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Julius Baxter                                   *
   3  *   julius@opencores.org                                                  *
   4  *                                                                         *
   5  *   Copyright (C) 2013 by Marek Czerski                                   *
   6  *   ma.czerski@gmail.com                                                  *
   7  *                                                                         *
   8  *   Copyright (C) 2013 by Franck Jullien                                  *
   9  *   elec4fun@gmail.com                                                    *
  10  *                                                                         *
  11  *                                                                         *
  12  *   This program is free software; you can redistribute it and/or modify  *
  13  *   it under the terms of the GNU General Public License as published by  *
  14  *   the Free Software Foundation; either version 2 of the License, or     *
  15  *   (at your option) any later version.                                   *
  16  *                                                                         *
  17  *   This program is distributed in the hope that it will be useful,       *
  18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  20  *   GNU General Public License for more details.                          *
  21  *                                                                         *
  22  *   You should have received a copy of the GNU General Public License     *
  23  *   along with this program; if not, write to the                         *
  24  *   Free Software Foundation, Inc.,                                       *
  25  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  26  ***************************************************************************/
  27
  28 #ifndef OR1K_H
  29 #define OR1K_H
  30
  31 #ifdef HAVE_CONFIG_H
  32 #include "config.h"
  33 #endif
  34
  35 #include <target/target.h>
  36
  37 /* SPR groups start address */
  38 #define GROUP0          (0  << 11)
  39 #define GROUP1          (1  << 11)
  40 #define GROUP2          (2  << 11)
  41 #define GROUP3          (3  << 11)
  42 #define GROUP4          (4  << 11)
  43 #define GROUP5          (5  << 11)
  44 #define GROUP6          (6  << 11)
  45 #define GROUP7          (7  << 11)
  46 #define GROUP8          (8  << 11)
  47 #define GROUP9          (9  << 11)
  48 #define GROUP10         (10 << 11)
  49
  50 /* OR1K registers */
  51 enum or1k_reg_nums {
  52         OR1K_REG_R0 = 0,
  53         OR1K_REG_R1,
  54         OR1K_REG_R2,
  55         OR1K_REG_R3,
  56         OR1K_REG_R4,
  57         OR1K_REG_R5,
  58         OR1K_REG_R6,
  59         OR1K_REG_R7,
  60         OR1K_REG_R8,
  61         OR1K_REG_R9,
  62         OR1K_REG_R10,
  63         OR1K_REG_R11,
  64         OR1K_REG_R12,
  65         OR1K_REG_R13,
  66         OR1K_REG_R14,
  67         OR1K_REG_R15,
  68         OR1K_REG_R16,
  69         OR1K_REG_R17,
  70         OR1K_REG_R18,
  71         OR1K_REG_R19,
  72         OR1K_REG_R20,
  73         OR1K_REG_R21,
  74         OR1K_REG_R22,
  75         OR1K_REG_R23,
  76         OR1K_REG_R24,
  77         OR1K_REG_R25,
  78         OR1K_REG_R26,
  79         OR1K_REG_R27,
  80         OR1K_REG_R28,
  81         OR1K_REG_R29,
  82         OR1K_REG_R30,
  83         OR1K_REG_R31,
  84         OR1K_REG_PPC,
  85         OR1K_REG_NPC,
  86         OR1K_REG_SR,
  87         OR1KNUMCOREREGS
  88 };
  89
  90 struct or1k_jtag {
  91         struct jtag_tap *tap;
  92         int or1k_jtag_inited;
  93         int or1k_jtag_module_selected;
  94         uint8_t *current_reg_idx;
  95         struct or1k_tap_ip *tap_ip;
  96         struct or1k_du *du_core;
  97 };
  98
  99 struct or1k_common {
 100         struct or1k_jtag jtag;
 101         struct reg_cache *core_cache;
 102         uint32_t core_regs[OR1KNUMCOREREGS];
 103         int nb_regs;
 104         struct or1k_core_reg *arch_info;
 105 };
 106
 107 static inline struct or1k_common *
 108 target_to_or1k(struct target *target)
 109 {
 110         return (struct or1k_common *)target->arch_info;
 111 }
 112
 113 struct or1k_core_reg {
 114         const char *name;
 115         uint32_t list_num;   /* Index in register cache */
 116         uint32_t spr_num;    /* Number in architecture's SPR space */
 117         struct target *target;
 118         struct or1k_common *or1k_common;
 119         const char *feature; /* feature name in XML tdesc file */
 120         const char *group;   /* register group in XML tdesc file */
 121 };
 122
 123 struct or1k_core_reg_init {
 124         const char *name;
 125         uint32_t spr_num;    /* Number in architecture's SPR space */
 126         const char *feature; /* feature name in XML tdesc file */
 127         const char *group;   /* register group in XML tdesc file */
 128 };
 129
 130 /* ORBIS32 Trap instruction */
 131 #define OR1K_TRAP_INSTR  0x21000001
 132
 133 enum or1k_debug_reg_nums {
 134         OR1K_DEBUG_REG_DMR1 = 0,
 135         OR1K_DEBUG_REG_DMR2,
 136         OR1K_DEBUG_REG_DCWR0,
 137         OR1K_DEBUG_REG_DCWR1,
 138         OR1K_DEBUG_REG_DSR,
 139         OR1K_DEBUG_REG_DRR,
 140         OR1K_DEBUG_REG_NUM
 141 };
 142
 143 #define NO_SINGLE_STEP          0
 144 #define SINGLE_STEP             1
 145
 146 /* OR1K Debug registers and bits needed for resuming */
 147 #define OR1K_DEBUG_REG_BASE     GROUP6                     /* Debug registers Base address */
 148 #define OR1K_DMR1_CPU_REG_ADD   (OR1K_DEBUG_REG_BASE + 16) /* Debug Mode Register 1 0x3010 */
 149 #define OR1K_DMR1_ST            0x00400000                 /* Single-step trace */
 150 #define OR1K_DMR1_BT            0x00800000                 /* Branch trace */
 151 #define OR1K_DMR2_WGB           0x003ff000                 /* Watchpoints generating breakpoint */
 152 #define OR1K_DSR_TE             0x00002000                 /* Trap exception */
 153
 154 /* OR1K Instruction cache registers needed for invalidating instruction
 155  * memory during adding and removing breakpoints.
 156  */
 157 #define OR1K_ICBIR_CPU_REG_ADD ((4 << 11) + 2)             /* IC Block Invalidate Register 0x2002 */
 158
 159 #endif