1 /***************************************************************************
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2 * Copyright (C) 2008 digenius technology GmbH. *
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4 * This program is free software; you can redistribute it and/or modify *
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5 * it under the terms of the GNU General Public License as published by *
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6 * the Free Software Foundation; either version 2 of the License, or *
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7 * (at your option) any later version. *
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9 * This program is distributed in the hope that it will be useful, *
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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12 * GNU General Public License for more details. *
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14 * You should have received a copy of the GNU General Public License *
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15 * along with this program; if not, write to the *
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16 * Free Software Foundation, Inc., *
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17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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18 ***************************************************************************/
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24 #include "register.h"
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25 #include "embeddedice.h"
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26 #include "arm_jtag.h"
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33 #define asizeof(x) (sizeof(x) / sizeof((x)[0]))
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35 #define NEW(type, variable, items) \
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36 type * variable = malloc(sizeof(type) * items)
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39 #define ARM11_REGCACHE_MODEREGS 0
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40 #define ARM11_REGCACHE_FREGS 0
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42 #define ARM11_REGCACHE_COUNT (20 + \
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43 23 * ARM11_REGCACHE_MODEREGS + \
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44 9 * ARM11_REGCACHE_FREGS)
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47 typedef struct arm11_register_history_s
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51 }arm11_register_history_t;
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55 typedef struct arm11_common_s
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59 arm_jtag_t jtag_info;
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61 /** \name Processor type detection */
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64 u32 device_id; /**< IDCODE readout */
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65 u32 didr; /**< DIDR readout (debug capabilities) */
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66 u8 implementor; /**< DIDR Implementor readout */
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68 size_t brp; /**< Number of Breakpoint Register Pairs */
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69 size_t wrp; /**< Number of Watchpoint Register Pairs */
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74 u32 last_dscr; /**< Last retrieved DSCR value;
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75 * Can be used to detect changes */
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80 /** \name Shadow registers to save processor state */
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83 reg_t * reg_list; /**< target register list */
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84 u32 reg_values[ARM11_REGCACHE_COUNT]; /**< data for registers */
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88 arm11_register_history_t
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89 reg_history[ARM11_REGCACHE_COUNT]; /**< register state before last resume */
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96 * ARM11 DBGTAP instructions
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98 * http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301f/I1006229.html
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100 enum arm11_instructions
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102 ARM11_EXTEST = 0x00,
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103 ARM11_SCAN_N = 0x02,
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104 ARM11_RESTART = 0x04,
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106 ARM11_INTEST = 0x0C,
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107 ARM11_ITRSEL = 0x1D,
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108 ARM11_IDCODE = 0x1E,
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109 ARM11_BYPASS = 0x1F,
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114 ARM11_DSCR_CORE_HALTED = 1 << 0,
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115 ARM11_DSCR_CORE_RESTARTED = 1 << 1,
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117 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_MASK = 0x0F << 2,
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118 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_HALT = 0x00 << 2,
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119 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_BREAKPOINT = 0x01 << 2,
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120 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_WATCHPOINT = 0x02 << 2,
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121 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_BKPT_INSTRUCTION = 0x03 << 2,
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122 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_EDBGRQ = 0x04 << 2,
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123 ARM11_DSCR_METHOD_OF_DEBUG_ENTRY_VECTOR_CATCH = 0x05 << 2,
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125 ARM11_DSCR_STICKY_PRECISE_DATA_ABORT = 1 << 6,
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126 ARM11_DSCR_STICKY_IMPRECISE_DATA_ABORT = 1 << 7,
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127 ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE = 1 << 13,
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128 ARM11_DSCR_MODE_SELECT = 1 << 14,
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129 ARM11_DSCR_WDTR_FULL = 1 << 29,
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130 ARM11_DSCR_RDTR_FULL = 1 << 30,
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135 ARM11_CPSR_T = 1 << 5,
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136 ARM11_CPSR_J = 1 << 24,
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141 ARM11_SC7_NULL = 0,
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144 ARM11_SC7_BVR0 = 64,
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145 ARM11_SC7_BCR0 = 80,
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146 ARM11_SC7_WVR0 = 96,
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147 ARM11_SC7_WCR0 = 112,
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152 typedef struct arm11_reg_state_s
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156 } arm11_reg_state_t;
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161 /* poll current target status */
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162 int arm11_poll(struct target_s *target);
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163 /* architecture specific status reply */
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164 int arm11_arch_state(struct target_s *target);
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166 /* target request support */
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167 int arm11_target_request_data(struct target_s *target, u32 size, u8 *buffer);
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169 /* target execution control */
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170 int arm11_halt(struct target_s *target);
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171 int arm11_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
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172 int arm11_step(struct target_s *target, int current, u32 address, int handle_breakpoints);
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174 /* target reset control */
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175 int arm11_assert_reset(struct target_s *target);
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176 int arm11_deassert_reset(struct target_s *target);
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177 int arm11_soft_reset_halt(struct target_s *target);
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178 int arm11_prepare_reset_halt(struct target_s *target);
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180 /* target register access for gdb */
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181 int arm11_get_gdb_reg_list(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size);
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183 /* target memory access
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184 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
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185 * count: number of items of <size>
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187 int arm11_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
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188 int arm11_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
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190 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
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191 int arm11_bulk_write_memory(struct target_s *target, u32 address, u32 count, u8 *buffer);
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193 int arm11_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum);
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195 /* target break-/watchpoint control
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196 * rw: 0 = write, 1 = read, 2 = access
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198 int arm11_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
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199 int arm11_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
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200 int arm11_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
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201 int arm11_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
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203 /* target algorithm support */
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204 int arm11_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info);
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206 int arm11_register_commands(struct command_context_s *cmd_ctx);
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207 int arm11_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
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208 int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
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209 int arm11_quit(void);
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213 void arm11_build_reg_cache(target_t *target);
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218 void arm11_setup_field (arm11_common_t * arm11, int num_bits, void * in_data, void * out_data, scan_field_t * field);
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219 void arm11_add_IR (arm11_common_t * arm11, u8 instr, enum tap_state state);
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220 void arm11_add_debug_SCAN_N (arm11_common_t * arm11, u8 chain, enum tap_state state);
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221 void arm11_add_debug_INST (arm11_common_t * arm11, u32 inst, u8 * flag, enum tap_state state);
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222 u32 arm11_read_DSCR (arm11_common_t * arm11);
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223 void arm11_write_DSCR (arm11_common_t * arm11, u32 dscr);
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225 enum target_debug_reason arm11_get_DSCR_debug_reason(u32 dscr);
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227 void arm11_run_instr_data_prepare (arm11_common_t * arm11);
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228 void arm11_run_instr_data_finish (arm11_common_t * arm11);
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229 void arm11_run_instr_no_data (arm11_common_t * arm11, u32 * opcode, size_t count);
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230 void arm11_run_instr_no_data1 (arm11_common_t * arm11, u32 opcode);
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231 void arm11_run_instr_data_to_core (arm11_common_t * arm11, u32 opcode, u32 * data, size_t count);
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232 void arm11_run_instr_data_to_core1 (arm11_common_t * arm11, u32 opcode, u32 data);
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233 void arm11_run_instr_data_from_core (arm11_common_t * arm11, u32 opcode, u32 * data, size_t count);
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234 void arm11_run_instr_data_from_core_via_r0 (arm11_common_t * arm11, u32 opcode, u32 * data);
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235 void arm11_run_instr_data_to_core_via_r0 (arm11_common_t * arm11, u32 opcode, u32 data);
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238 typedef struct arm11_sc7_action_s
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243 } arm11_sc7_action_t;
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245 void arm11_sc7_run(arm11_common_t * arm11, arm11_sc7_action_t * actions, size_t count);
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246 void arm11_sc7_clear_bw(arm11_common_t * arm11);
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250 #endif /* ARM11_H */
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