src/target/armv7a.h

   1 /***************************************************************************
   2  *    Copyright (C) 2009 by David Brownell                                 *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  18  ***************************************************************************/
  19
  20 #ifndef ARMV7A_H
  21 #define ARMV7A_H
  22
  23 #include "arm_adi_v5.h"
  24 #include "arm.h"
  25 #include "armv4_5_mmu.h"
  26 #include "armv4_5_cache.h"
  27 #include "arm_dpm.h"
  28
  29 enum {
  30         ARM_PC  = 15,
  31         ARM_CPSR = 16
  32 };
  33
  34 #define ARMV7_COMMON_MAGIC 0x0A450999
  35
  36 /* VA to PA translation operations opc2 values*/
  37 #define V2PCWPR  0
  38 #define V2PCWPW  1
  39 #define V2PCWUR  2
  40 #define V2PCWUW  3
  41 #define V2POWPR  4
  42 #define V2POWPW  5
  43 #define V2POWUR  6
  44 #define V2POWUW  7
  45 /*   L210/L220 cache controller support */
  46 struct armv7a_l2x_cache {
  47         uint32_t base;
  48         uint32_t way;
  49 };
  50
  51 struct armv7a_cachesize {
  52         uint32_t level_num;
  53         /*  cache dimensionning */
  54         uint32_t linelen;
  55         uint32_t associativity;
  56         uint32_t nsets;
  57         uint32_t cachesize;
  58         /* info for set way operation on cache */
  59         uint32_t index;
  60         uint32_t index_shift;
  61         uint32_t way;
  62         uint32_t way_shift;
  63 };
  64
  65 struct armv7a_cache_common {
  66         int ctype;
  67         struct armv7a_cachesize d_u_size;       /* data cache */
  68         struct armv7a_cachesize i_size;         /* instruction cache */
  69         int i_cache_enabled;
  70         int d_u_cache_enabled;
  71         /* l2 external unified cache if some */
  72         void *l2_cache;
  73         int (*flush_all_data_cache)(struct target *target);
  74         int (*display_cache_info)(struct command_context *cmd_ctx,
  75                         struct armv7a_cache_common *armv7a_cache);
  76 };
  77
  78 struct armv7a_mmu_common {
  79         /* following field mmu working way */
  80         int32_t ttbr1_used; /*  -1 not initialized, 0 no ttbr1 1 ttbr1 used and  */
  81         uint32_t ttbr0_mask;/*  masked to be used  */
  82         uint32_t os_border;
  83
  84         int (*read_physical_memory)(struct target *target, uint32_t address, uint32_t size,
  85                         uint32_t count, uint8_t *buffer);
  86         struct armv7a_cache_common armv7a_cache;
  87         uint32_t mmu_enabled;
  88 };
  89
  90 struct armv7a_common {
  91         struct arm arm;
  92         int common_magic;
  93         struct reg_cache *core_cache;
  94
  95         struct adiv5_dap dap;
  96
  97         /* Core Debug Unit */
  98         struct arm_dpm dpm;
  99         uint32_t debug_base;
 100         uint8_t debug_ap;
 101         uint8_t memory_ap;
 102         bool memory_ap_available;
 103         /* mdir */
 104         uint8_t multi_processor_system;
 105         uint8_t cluster_id;
 106         uint8_t cpu_id;
 107         bool is_armv7r;
 108
 109         /* cache specific to V7 Memory Management Unit compatible with v4_5*/
 110         struct armv7a_mmu_common armv7a_mmu;
 111
 112         int (*examine_debug_reason)(struct target *target);
 113         int (*post_debug_entry)(struct target *target);
 114
 115         void (*pre_restore_context)(struct target *target);
 116 };
 117
 118 static inline struct armv7a_common *
 119 target_to_armv7a(struct target *target)
 120 {
 121         return container_of(target->arch_info, struct armv7a_common, arm);
 122 }
 123
 124 /* register offsets from armv7a.debug_base */
 125
 126 /* See ARMv7a arch spec section C10.2 */
 127 #define CPUDBG_DIDR             0x000
 128
 129 /* See ARMv7a arch spec section C10.3 */
 130 #define CPUDBG_WFAR             0x018
 131 /* PCSR at 0x084 -or- 0x0a0 -or- both ... based on flags in DIDR */
 132 #define CPUDBG_DSCR             0x088
 133 #define CPUDBG_DRCR             0x090
 134 #define CPUDBG_PRCR             0x310
 135 #define CPUDBG_PRSR             0x314
 136
 137 /* See ARMv7a arch spec section C10.4 */
 138 #define CPUDBG_DTRRX            0x080
 139 #define CPUDBG_ITR              0x084
 140 #define CPUDBG_DTRTX            0x08c
 141
 142 /* See ARMv7a arch spec section C10.5 */
 143 #define CPUDBG_BVR_BASE         0x100
 144 #define CPUDBG_BCR_BASE         0x140
 145 #define CPUDBG_WVR_BASE         0x180
 146 #define CPUDBG_WCR_BASE         0x1C0
 147 #define CPUDBG_VCR              0x01C
 148
 149 /* See ARMv7a arch spec section C10.6 */
 150 #define CPUDBG_OSLAR            0x300
 151 #define CPUDBG_OSLSR            0x304
 152 #define CPUDBG_OSSRR            0x308
 153 #define CPUDBG_ECR              0x024
 154
 155 /* See ARMv7a arch spec section C10.7 */
 156 #define CPUDBG_DSCCR            0x028
 157
 158 /* See ARMv7a arch spec section C10.8 */
 159 #define CPUDBG_AUTHSTATUS       0xFB8
 160
 161 int armv7a_arch_state(struct target *target);
 162 int armv7a_identify_cache(struct target *target);
 163 int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a);
 164 int armv7a_mmu_translate_va_pa(struct target *target, uint32_t va,
 165                 uint32_t *val, int meminfo);
 166 int armv7a_mmu_translate_va(struct target *target,  uint32_t va, uint32_t *val);
 167
 168 int armv7a_handle_cache_info_command(struct command_context *cmd_ctx,
 169                 struct armv7a_cache_common *armv7a_cache);
 170
 171 extern const struct command_registration armv7a_command_handlers[];
 172
 173 #endif /* ARMV4_5_H */