src/target/arm720t.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "arm720t.h"
  25 #include "jtag.h"
  26 #include "log.h"
  27 #include "time_support.h"
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #if 0
  33 #define _DEBUG_INSTRUCTION_EXECUTION_
  34 #endif
  35
  36 /* cli handling */
  37 int arm720t_register_commands(struct command_context_s *cmd_ctx);
  38
  39 int arm720t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  40 int arm720t_handle_virt2phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  41 int arm720t_handle_md_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  42 int arm720t_handle_mw_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  43
  44 /* forward declarations */
  45 int arm720t_target_create(struct target_s *target,Jim_Interp *interp);
  46 int arm720t_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
  47 int arm720t_quit(void);
  48 int arm720t_arch_state(struct target_s *target);
  49 int arm720t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
  50 int arm720t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
  51 int arm720t_soft_reset_halt(struct target_s *target);
  52
  53 target_type_t arm720t_target =
  54 {
  55         .name = "arm720t",
  56
  57         .poll = arm7_9_poll,
  58         .arch_state = arm720t_arch_state,
  59
  60         .halt = arm7_9_halt,
  61         .resume = arm7_9_resume,
  62         .step = arm7_9_step,
  63
  64         .assert_reset = arm7_9_assert_reset,
  65         .deassert_reset = arm7_9_deassert_reset,
  66         .soft_reset_halt = arm720t_soft_reset_halt,
  67
  68         .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
  69
  70         .read_memory = arm720t_read_memory,
  71         .write_memory = arm720t_write_memory,
  72         .bulk_write_memory = arm7_9_bulk_write_memory,
  73         .checksum_memory = arm7_9_checksum_memory,
  74         .blank_check_memory = arm7_9_blank_check_memory,
  75
  76         .run_algorithm = armv4_5_run_algorithm,
  77
  78         .add_breakpoint = arm7_9_add_breakpoint,
  79         .remove_breakpoint = arm7_9_remove_breakpoint,
  80         .add_watchpoint = arm7_9_add_watchpoint,
  81         .remove_watchpoint = arm7_9_remove_watchpoint,
  82
  83         .register_commands = arm720t_register_commands,
  84         .target_create = arm720t_target_create,
  85         .init_target = arm720t_init_target,
  86         .examine = arm7tdmi_examine,
  87         .quit = arm720t_quit
  88 };
  89
  90 int arm720t_scan_cp15(target_t *target, u32 out, u32 *in, int instruction, int clock)
  91 {
  92         int retval = ERROR_OK;
  93         armv4_5_common_t *armv4_5 = target->arch_info;
  94         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
  95         arm_jtag_t *jtag_info = &arm7_9->jtag_info;
  96         scan_field_t fields[2];
  97         u8 out_buf[4];
  98         u8 instruction_buf = instruction;
  99
 100         buf_set_u32(out_buf, 0, 32, flip_u32(out, 32));
 101
 102         jtag_add_end_state(TAP_DRPAUSE);
 103         if((retval = arm_jtag_scann(jtag_info, 0xf)) != ERROR_OK)
 104         {
 105                 return retval;
 106         }
 107         if((retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL)) != ERROR_OK)
 108         {
 109                 return retval;
 110         }
 111
 112         fields[0].tap = jtag_info->tap;
 113         fields[0].num_bits = 1;
 114         fields[0].out_value = &instruction_buf;
 115         fields[0].out_mask = NULL;
 116         fields[0].in_value = NULL;
 117         fields[0].in_check_value = NULL;
 118         fields[0].in_check_mask = NULL;
 119         fields[0].in_handler = NULL;
 120         fields[0].in_handler_priv = NULL;
 121
 122         fields[1].tap = jtag_info->tap;
 123         fields[1].num_bits = 32;
 124         fields[1].out_value = out_buf;
 125         fields[1].out_mask = NULL;
 126         fields[1].in_value = NULL;
 127         if (in)
 128         {
 129                 fields[1].in_handler = arm_jtag_buf_to_u32_flip;
 130                 fields[1].in_handler_priv = in;
 131         } else
 132         {
 133                 fields[1].in_handler = NULL;
 134                 fields[1].in_handler_priv = NULL;
 135         }
 136         fields[1].in_check_value = NULL;
 137         fields[1].in_check_mask = NULL;
 138
 139         jtag_add_dr_scan(2, fields, -1);
 140
 141         if (clock)
 142                 jtag_add_runtest(0, -1);
 143
 144 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
 145         if((retval = jtag_execute_queue()) != ERROR_OK)
 146         {
 147                 return retval;
 148         }
 149
 150         if (in)
 151                 LOG_DEBUG("out: %8.8x, in: %8.8x, instruction: %i, clock: %i", out, *in, instruction, clock);
 152         else
 153                 LOG_DEBUG("out: %8.8x, instruction: %i, clock: %i", out, instruction, clock);
 154 #else
 155                 LOG_DEBUG("out: %8.8x, instruction: %i, clock: %i", out, instruction, clock);
 156 #endif
 157
 158         return ERROR_OK;
 159 }
 160
 161 int arm720t_read_cp15(target_t *target, u32 opcode, u32 *value)
 162 {
 163         /* fetch CP15 opcode */
 164         arm720t_scan_cp15(target, opcode, NULL, 1, 1);
 165         /* "DECODE" stage */
 166         arm720t_scan_cp15(target, ARMV4_5_NOP, NULL, 1, 1);
 167         /* "EXECUTE" stage (1) */
 168         arm720t_scan_cp15(target, ARMV4_5_NOP, NULL, 1, 0);
 169         arm720t_scan_cp15(target, 0x0, NULL, 0, 1);
 170         /* "EXECUTE" stage (2) */
 171         arm720t_scan_cp15(target, 0x0, NULL, 0, 1);
 172         /* "EXECUTE" stage (3), CDATA is read */
 173         arm720t_scan_cp15(target, ARMV4_5_NOP, value, 1, 1);
 174
 175         return ERROR_OK;
 176 }
 177
 178 int arm720t_write_cp15(target_t *target, u32 opcode, u32 value)
 179 {
 180         /* fetch CP15 opcode */
 181         arm720t_scan_cp15(target, opcode, NULL, 1, 1);
 182         /* "DECODE" stage */
 183         arm720t_scan_cp15(target, ARMV4_5_NOP, NULL, 1, 1);
 184         /* "EXECUTE" stage (1) */
 185         arm720t_scan_cp15(target, ARMV4_5_NOP, NULL, 1, 0);
 186         arm720t_scan_cp15(target, 0x0, NULL, 0, 1);
 187         /* "EXECUTE" stage (2) */
 188         arm720t_scan_cp15(target, value, NULL, 0, 1);
 189         arm720t_scan_cp15(target, ARMV4_5_NOP, NULL, 1, 1);
 190
 191         return ERROR_OK;
 192 }
 193
 194 u32 arm720t_get_ttb(target_t *target)
 195 {
 196         u32 ttb = 0x0;
 197
 198         arm720t_read_cp15(target, 0xee120f10, &ttb);
 199         jtag_execute_queue();
 200
 201         ttb &= 0xffffc000;
 202
 203         return ttb;
 204 }
 205
 206 void arm720t_disable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
 207 {
 208         u32 cp15_control;
 209
 210         /* read cp15 control register */
 211         arm720t_read_cp15(target, 0xee110f10, &cp15_control);
 212         jtag_execute_queue();
 213
 214         if (mmu)
 215                 cp15_control &= ~0x1U;
 216
 217         if (d_u_cache || i_cache)
 218                 cp15_control &= ~0x4U;
 219
 220         arm720t_write_cp15(target, 0xee010f10, cp15_control);
 221 }
 222
 223 void arm720t_enable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
 224 {
 225         u32 cp15_control;
 226
 227         /* read cp15 control register */
 228         arm720t_read_cp15(target, 0xee110f10, &cp15_control);
 229         jtag_execute_queue();
 230
 231         if (mmu)
 232                 cp15_control |= 0x1U;
 233
 234         if (d_u_cache || i_cache)
 235                 cp15_control |= 0x4U;
 236
 237         arm720t_write_cp15(target, 0xee010f10, cp15_control);
 238 }
 239
 240 void arm720t_post_debug_entry(target_t *target)
 241 {
 242         armv4_5_common_t *armv4_5 = target->arch_info;
 243         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 244         arm7tdmi_common_t *arm7tdmi = arm7_9->arch_info;
 245         arm720t_common_t *arm720t = arm7tdmi->arch_info;
 246
 247         /* examine cp15 control reg */
 248         arm720t_read_cp15(target, 0xee110f10, &arm720t->cp15_control_reg);
 249         jtag_execute_queue();
 250         LOG_DEBUG("cp15_control_reg: %8.8x", arm720t->cp15_control_reg);
 251
 252         arm720t->armv4_5_mmu.mmu_enabled = (arm720t->cp15_control_reg & 0x1U) ? 1 : 0;
 253         arm720t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (arm720t->cp15_control_reg & 0x4U) ? 1 : 0;
 254         arm720t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
 255
 256         /* save i/d fault status and address register */
 257         arm720t_read_cp15(target, 0xee150f10, &arm720t->fsr_reg);
 258         arm720t_read_cp15(target, 0xee160f10, &arm720t->far_reg);
 259         jtag_execute_queue();
 260 }
 261
 262 void arm720t_pre_restore_context(target_t *target)
 263 {
 264         armv4_5_common_t *armv4_5 = target->arch_info;
 265         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 266         arm7tdmi_common_t *arm7tdmi = arm7_9->arch_info;
 267         arm720t_common_t *arm720t = arm7tdmi->arch_info;
 268
 269         /* restore i/d fault status and address register */
 270         arm720t_write_cp15(target, 0xee050f10, arm720t->fsr_reg);
 271         arm720t_write_cp15(target, 0xee060f10, arm720t->far_reg);
 272 }
 273
 274 int arm720t_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm7tdmi_common_t **arm7tdmi_p, arm720t_common_t **arm720t_p)
 275 {
 276         armv4_5_common_t *armv4_5 = target->arch_info;
 277         arm7_9_common_t *arm7_9;
 278         arm7tdmi_common_t *arm7tdmi;
 279         arm720t_common_t *arm720t;
 280
 281         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 282         {
 283                 return -1;
 284         }
 285
 286         arm7_9 = armv4_5->arch_info;
 287         if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
 288         {
 289                 return -1;
 290         }
 291
 292         arm7tdmi = arm7_9->arch_info;
 293         if (arm7tdmi->common_magic != ARM7TDMI_COMMON_MAGIC)
 294         {
 295                 return -1;
 296         }
 297
 298         arm720t = arm7tdmi->arch_info;
 299         if (arm720t->common_magic != ARM720T_COMMON_MAGIC)
 300         {
 301                 return -1;
 302         }
 303
 304         *armv4_5_p = armv4_5;
 305         *arm7_9_p = arm7_9;
 306         *arm7tdmi_p = arm7tdmi;
 307         *arm720t_p = arm720t;
 308
 309         return ERROR_OK;
 310 }
 311
 312 int arm720t_arch_state(struct target_s *target)
 313 {
 314         armv4_5_common_t *armv4_5 = target->arch_info;
 315         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 316         arm7tdmi_common_t *arm7tdmi = arm7_9->arch_info;
 317         arm720t_common_t *arm720t = arm7tdmi->arch_info;
 318
 319         char *state[] =
 320         {
 321                 "disabled", "enabled"
 322         };
 323
 324         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 325         {
 326                 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
 327                 exit(-1);
 328         }
 329
 330         LOG_USER("target halted in %s state due to %s, current mode: %s\n"
 331                         "cpsr: 0x%8.8x pc: 0x%8.8x\n"
 332                         "MMU: %s, Cache: %s",
 333                          armv4_5_state_strings[armv4_5->core_state],
 334                          Jim_Nvp_value2name_simple( nvp_target_debug_reason, target->debug_reason )->name ,
 335                          armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
 336                          buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
 337                          buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
 338                          state[arm720t->armv4_5_mmu.mmu_enabled],
 339                          state[arm720t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled]);
 340
 341         return ERROR_OK;
 342 }
 343
 344 int arm720t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 345 {
 346         int retval;
 347         armv4_5_common_t *armv4_5 = target->arch_info;
 348         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 349         arm7tdmi_common_t *arm7tdmi = arm7_9->arch_info;
 350         arm720t_common_t *arm720t = arm7tdmi->arch_info;
 351
 352         /* disable cache, but leave MMU enabled */
 353         if (arm720t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled)
 354                 arm720t_disable_mmu_caches(target, 0, 1, 0);
 355
 356         retval = arm7_9_read_memory(target, address, size, count, buffer);
 357
 358         if (arm720t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled)
 359                 arm720t_enable_mmu_caches(target, 0, 1, 0);
 360
 361         return retval;
 362 }
 363
 364 int arm720t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 365 {
 366         int retval;
 367
 368         if ((retval = arm7_9_write_memory(target, address, size, count, buffer)) != ERROR_OK)
 369                 return retval;
 370
 371         return retval;
 372 }
 373
 374 int arm720t_soft_reset_halt(struct target_s *target)
 375 {
 376         int retval = ERROR_OK;
 377         armv4_5_common_t *armv4_5 = target->arch_info;
 378         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 379         arm7tdmi_common_t *arm7tdmi = arm7_9->arch_info;
 380         arm720t_common_t *arm720t = arm7tdmi->arch_info;
 381         reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
 382
 383         if ((retval = target_halt(target)) != ERROR_OK)
 384         {
 385                 return retval;
 386         }
 387
 388         long long then=timeval_ms();
 389         int timeout;
 390         while (!(timeout=((timeval_ms()-then)>1000)))
 391         {
 392                 if (buf_get_u32(dbg_stat->value, EICE_DBG_STATUS_DBGACK, 1) == 0)
 393                 {
 394                         embeddedice_read_reg(dbg_stat);
 395                         if ((retval = jtag_execute_queue()) != ERROR_OK)
 396                         {
 397                                 return retval;
 398                         }
 399                 } else
 400                 {
 401                         break;
 402                 }
 403                 if (debug_level>=3)
 404                 {
 405                         alive_sleep(100);
 406                 } else
 407                 {
 408                         keep_alive();
 409                 }
 410         }
 411         if (timeout)
 412         {
 413                 LOG_ERROR("Failed to halt CPU after 1 sec");
 414                 return ERROR_TARGET_TIMEOUT;
 415         }
 416
 417         target->state = TARGET_HALTED;
 418
 419         /* SVC, ARM state, IRQ and FIQ disabled */
 420         buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 8, 0xd3);
 421         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
 422         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
 423
 424         /* start fetching from 0x0 */
 425         buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
 426         armv4_5->core_cache->reg_list[15].dirty = 1;
 427         armv4_5->core_cache->reg_list[15].valid = 1;
 428
 429         armv4_5->core_mode = ARMV4_5_MODE_SVC;
 430         armv4_5->core_state = ARMV4_5_STATE_ARM;
 431
 432         arm720t_disable_mmu_caches(target, 1, 1, 1);
 433         arm720t->armv4_5_mmu.mmu_enabled = 0;
 434         arm720t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
 435         arm720t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
 436
 437         if ((retval = target_call_event_callbacks(target, TARGET_EVENT_HALTED)) != ERROR_OK)
 438         {
 439                 return retval;
 440         }
 441
 442         return ERROR_OK;
 443 }
 444
 445 int arm720t_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
 446 {
 447         arm7tdmi_init_target(cmd_ctx, target);
 448
 449         return ERROR_OK;
 450
 451 }
 452
 453 int arm720t_quit(void)
 454 {
 455
 456         return ERROR_OK;
 457 }
 458
 459 int arm720t_init_arch_info(target_t *target, arm720t_common_t *arm720t, jtag_tap_t *tap, const char *variant)
 460 {
 461         arm7tdmi_common_t *arm7tdmi = &arm720t->arm7tdmi_common;
 462         arm7_9_common_t *arm7_9 = &arm7tdmi->arm7_9_common;
 463
 464         arm7tdmi_init_arch_info(target, arm7tdmi, tap, variant);
 465
 466         arm7tdmi->arch_info = arm720t;
 467         arm720t->common_magic = ARM720T_COMMON_MAGIC;
 468
 469         arm7_9->post_debug_entry = arm720t_post_debug_entry;
 470         arm7_9->pre_restore_context = arm720t_pre_restore_context;
 471
 472         arm720t->armv4_5_mmu.armv4_5_cache.ctype = -1;
 473         arm720t->armv4_5_mmu.get_ttb = arm720t_get_ttb;
 474         arm720t->armv4_5_mmu.read_memory = arm7_9_read_memory;
 475         arm720t->armv4_5_mmu.write_memory = arm7_9_write_memory;
 476         arm720t->armv4_5_mmu.disable_mmu_caches = arm720t_disable_mmu_caches;
 477         arm720t->armv4_5_mmu.enable_mmu_caches = arm720t_enable_mmu_caches;
 478         arm720t->armv4_5_mmu.has_tiny_pages = 0;
 479         arm720t->armv4_5_mmu.mmu_enabled = 0;
 480
 481         return ERROR_OK;
 482 }
 483
 484 int arm720t_target_create(struct target_s *target, Jim_Interp *interp)
 485 {
 486         arm720t_common_t *arm720t = calloc(1,sizeof(arm720t_common_t));
 487
 488         arm720t_init_arch_info(target, arm720t, target->tap, target->variant);
 489
 490         return ERROR_OK;
 491 }
 492
 493 int arm720t_register_commands(struct command_context_s *cmd_ctx)
 494 {
 495         int retval;
 496         command_t *arm720t_cmd;
 497
 498
 499         retval = arm7tdmi_register_commands(cmd_ctx);
 500
 501         arm720t_cmd = register_command(cmd_ctx, NULL, "arm720t", NULL, COMMAND_ANY, "arm720t specific commands");
 502
 503         register_command(cmd_ctx, arm720t_cmd, "cp15", arm720t_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <opcode> [value]");
 504         register_command(cmd_ctx, arm720t_cmd, "virt2phys", arm720t_handle_virt2phys_command, COMMAND_EXEC, "translate va to pa <va>");
 505
 506         register_command(cmd_ctx, arm720t_cmd, "mdw_phys", arm720t_handle_md_phys_command, COMMAND_EXEC, "display memory words <physical addr> [count]");
 507         register_command(cmd_ctx, arm720t_cmd, "mdh_phys", arm720t_handle_md_phys_command, COMMAND_EXEC, "display memory half-words <physical addr> [count]");
 508         register_command(cmd_ctx, arm720t_cmd, "mdb_phys", arm720t_handle_md_phys_command, COMMAND_EXEC, "display memory bytes <physical addr> [count]");
 509
 510         register_command(cmd_ctx, arm720t_cmd, "mww_phys", arm720t_handle_mw_phys_command, COMMAND_EXEC, "write memory word <physical addr> <value>");
 511         register_command(cmd_ctx, arm720t_cmd, "mwh_phys", arm720t_handle_mw_phys_command, COMMAND_EXEC, "write memory half-word <physical addr> <value>");
 512         register_command(cmd_ctx, arm720t_cmd, "mwb_phys", arm720t_handle_mw_phys_command, COMMAND_EXEC, "write memory byte <physical addr> <value>");
 513
 514         return ERROR_OK;
 515 }
 516
 517 int arm720t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 518 {
 519         int retval;
 520         target_t *target = get_current_target(cmd_ctx);
 521         armv4_5_common_t *armv4_5;
 522         arm7_9_common_t *arm7_9;
 523         arm7tdmi_common_t *arm7tdmi;
 524         arm720t_common_t *arm720t;
 525         arm_jtag_t *jtag_info;
 526
 527         if (arm720t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm7tdmi, &arm720t) != ERROR_OK)
 528         {
 529                 command_print(cmd_ctx, "current target isn't an ARM720t target");
 530                 return ERROR_OK;
 531         }
 532
 533         jtag_info = &arm7_9->jtag_info;
 534
 535         if (target->state != TARGET_HALTED)
 536         {
 537                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
 538                 return ERROR_OK;
 539         }
 540
 541         /* one or more argument, access a single register (write if second argument is given */
 542         if (argc >= 1)
 543         {
 544                 u32 opcode = strtoul(args[0], NULL, 0);
 545
 546                 if (argc == 1)
 547                 {
 548                         u32 value;
 549                         if ((retval = arm720t_read_cp15(target, opcode, &value)) != ERROR_OK)
 550                         {
 551                                 command_print(cmd_ctx, "couldn't access cp15 with opcode 0x%8.8x", opcode);
 552                                 return ERROR_OK;
 553                         }
 554
 555                         if ((retval = jtag_execute_queue()) != ERROR_OK)
 556                         {
 557                                 return retval;
 558                         }
 559
 560                         command_print(cmd_ctx, "0x%8.8x: 0x%8.8x", opcode, value);
 561                 }
 562                 else if (argc == 2)
 563                 {
 564                         u32 value = strtoul(args[1], NULL, 0);
 565                         if ((retval = arm720t_write_cp15(target, opcode, value)) != ERROR_OK)
 566                         {
 567                                 command_print(cmd_ctx, "couldn't access cp15 with opcode 0x%8.8x", opcode);
 568                                 return ERROR_OK;
 569                         }
 570                         command_print(cmd_ctx, "0x%8.8x: 0x%8.8x", opcode, value);
 571                 }
 572         }
 573
 574         return ERROR_OK;
 575 }
 576
 577 int arm720t_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
 578 {
 579         target_t *target = get_current_target(cmd_ctx);
 580         armv4_5_common_t *armv4_5;
 581         arm7_9_common_t *arm7_9;
 582         arm7tdmi_common_t *arm7tdmi;
 583         arm720t_common_t *arm720t;
 584         arm_jtag_t *jtag_info;
 585
 586         if (arm720t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm7tdmi, &arm720t) != ERROR_OK)
 587         {
 588                 command_print(cmd_ctx, "current target isn't an ARM720t target");
 589                 return ERROR_OK;
 590         }
 591
 592         jtag_info = &arm7_9->jtag_info;
 593
 594         if (target->state != TARGET_HALTED)
 595         {
 596                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
 597                 return ERROR_OK;
 598         }
 599
 600         return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &arm720t->armv4_5_mmu);
 601 }
 602
 603 int arm720t_handle_md_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
 604 {
 605         target_t *target = get_current_target(cmd_ctx);
 606         armv4_5_common_t *armv4_5;
 607         arm7_9_common_t *arm7_9;
 608         arm7tdmi_common_t *arm7tdmi;
 609         arm720t_common_t *arm720t;
 610         arm_jtag_t *jtag_info;
 611
 612         if (arm720t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm7tdmi, &arm720t) != ERROR_OK)
 613         {
 614                 command_print(cmd_ctx, "current target isn't an ARM720t target");
 615                 return ERROR_OK;
 616         }
 617
 618         jtag_info = &arm7_9->jtag_info;
 619
 620         if (target->state != TARGET_HALTED)
 621         {
 622                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
 623                 return ERROR_OK;
 624         }
 625
 626         return armv4_5_mmu_handle_md_phys_command(cmd_ctx, cmd, args, argc, target, &arm720t->armv4_5_mmu);
 627 }
 628
 629 int arm720t_handle_mw_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
 630 {
 631         target_t *target = get_current_target(cmd_ctx);
 632         armv4_5_common_t *armv4_5;
 633         arm7_9_common_t *arm7_9;
 634         arm7tdmi_common_t *arm7tdmi;
 635         arm720t_common_t *arm720t;
 636         arm_jtag_t *jtag_info;
 637
 638         if (arm720t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm7tdmi, &arm720t) != ERROR_OK)
 639         {
 640                 command_print(cmd_ctx, "current target isn't an ARM720t target");
 641                 return ERROR_OK;
 642         }
 643
 644         jtag_info = &arm7_9->jtag_info;
 645
 646         if (target->state != TARGET_HALTED)
 647         {
 648                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
 649                 return ERROR_OK;
 650         }
 651
 652         return armv4_5_mmu_handle_mw_phys_command(cmd_ctx, cmd, args, argc, target, &arm720t->armv4_5_mmu);
 653 }