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   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 "arm920t.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 arm920t_register_commands(struct command_context_s *cmd_ctx);
  38
  39 int arm920t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  40 int arm920t_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  41 int arm920t_handle_virt2phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  42 int arm920t_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  43 int arm920t_handle_md_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  44 int arm920t_handle_mw_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  45
  46 int arm920t_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  47 int arm920t_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
  48
  49 /* forward declarations */
  50 int arm920t_target_create(struct target_s *target, Jim_Interp *interp);
  51 int arm920t_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
  52 int arm920t_quit(void);
  53 int arm920t_arch_state(struct target_s *target);
  54 int arm920t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
  55 int arm920t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
  56 int arm920t_soft_reset_halt(struct target_s *target);
  57
  58 #define ARM920T_CP15_PHYS_ADDR(x, y, z) ((x << 5) | (y << 1) << (z))
  59
  60 target_type_t arm920t_target =
  61 {
  62         .name = "arm920t",
  63
  64         .poll = arm7_9_poll,
  65         .arch_state = arm920t_arch_state,
  66
  67         .target_request_data = arm7_9_target_request_data,
  68
  69         .halt = arm7_9_halt,
  70         .resume = arm7_9_resume,
  71         .step = arm7_9_step,
  72
  73         .assert_reset = arm7_9_assert_reset,
  74         .deassert_reset = arm7_9_deassert_reset,
  75         .soft_reset_halt = arm920t_soft_reset_halt,
  76
  77         .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
  78
  79         .read_memory = arm920t_read_memory,
  80         .write_memory = arm920t_write_memory,
  81         .bulk_write_memory = arm7_9_bulk_write_memory,
  82         .checksum_memory = arm7_9_checksum_memory,
  83         .blank_check_memory = arm7_9_blank_check_memory,
  84
  85         .run_algorithm = armv4_5_run_algorithm,
  86
  87         .add_breakpoint = arm7_9_add_breakpoint,
  88         .remove_breakpoint = arm7_9_remove_breakpoint,
  89         .add_watchpoint = arm7_9_add_watchpoint,
  90         .remove_watchpoint = arm7_9_remove_watchpoint,
  91
  92         .register_commands = arm920t_register_commands,
  93         .target_create = arm920t_target_create,
  94         .init_target = arm920t_init_target,
  95         .examine = arm9tdmi_examine,
  96         .quit = arm920t_quit
  97 };
  98
  99 int arm920t_read_cp15_physical(target_t *target, int reg_addr, u32 *value)
 100 {
 101         armv4_5_common_t *armv4_5 = target->arch_info;
 102         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 103         arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 104         scan_field_t fields[4];
 105         u8 access_type_buf = 1;
 106         u8 reg_addr_buf = reg_addr & 0x3f;
 107         u8 nr_w_buf = 0;
 108
 109         jtag_add_end_state(TAP_RTI);
 110         arm_jtag_scann(jtag_info, 0xf);
 111         arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
 112
 113         fields[0].device = jtag_info->chain_pos;
 114         fields[0].num_bits = 1;
 115         fields[0].out_value = &access_type_buf;
 116         fields[0].out_mask = NULL;
 117         fields[0].in_value = NULL;
 118         fields[0].in_check_value = NULL;
 119         fields[0].in_check_mask = NULL;
 120         fields[0].in_handler = NULL;
 121         fields[0].in_handler_priv = NULL;
 122
 123         fields[1].device = jtag_info->chain_pos;
 124         fields[1].num_bits = 32;
 125         fields[1].out_value = NULL;
 126         fields[1].out_mask = NULL;
 127         fields[1].in_value = NULL;
 128         fields[1].in_check_value = NULL;
 129         fields[1].in_check_mask = NULL;
 130         fields[1].in_handler = NULL;
 131         fields[1].in_handler_priv = NULL;
 132
 133         fields[2].device = jtag_info->chain_pos;
 134         fields[2].num_bits = 6;
 135         fields[2].out_value = &reg_addr_buf;
 136         fields[2].out_mask = NULL;
 137         fields[2].in_value = NULL;
 138         fields[2].in_check_value = NULL;
 139         fields[2].in_check_mask = NULL;
 140         fields[2].in_handler = NULL;
 141         fields[2].in_handler_priv = NULL;
 142
 143         fields[3].device = jtag_info->chain_pos;
 144         fields[3].num_bits = 1;
 145         fields[3].out_value = &nr_w_buf;
 146         fields[3].out_mask = NULL;
 147         fields[3].in_value = NULL;
 148         fields[3].in_check_value = NULL;
 149         fields[3].in_check_mask = NULL;
 150         fields[3].in_handler = NULL;
 151         fields[3].in_handler_priv = NULL;
 152
 153         jtag_add_dr_scan(4, fields, -1);
 154
 155         fields[1].in_handler_priv = value;
 156         fields[1].in_handler = arm_jtag_buf_to_u32;
 157
 158         jtag_add_dr_scan(4, fields, -1);
 159
 160 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
 161         jtag_execute_queue();
 162         LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, *value);
 163 #endif
 164
 165         return ERROR_OK;
 166 }
 167
 168 int arm920t_write_cp15_physical(target_t *target, int reg_addr, u32 value)
 169 {
 170         armv4_5_common_t *armv4_5 = target->arch_info;
 171         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 172         arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 173         scan_field_t fields[4];
 174         u8 access_type_buf = 1;
 175         u8 reg_addr_buf = reg_addr & 0x3f;
 176         u8 nr_w_buf = 1;
 177         u8 value_buf[4];
 178
 179         buf_set_u32(value_buf, 0, 32, value);
 180
 181         jtag_add_end_state(TAP_RTI);
 182         arm_jtag_scann(jtag_info, 0xf);
 183         arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
 184
 185         fields[0].device = jtag_info->chain_pos;
 186         fields[0].num_bits = 1;
 187         fields[0].out_value = &access_type_buf;
 188         fields[0].out_mask = NULL;
 189         fields[0].in_value = NULL;
 190         fields[0].in_check_value = NULL;
 191         fields[0].in_check_mask = NULL;
 192         fields[0].in_handler = NULL;
 193         fields[0].in_handler_priv = NULL;
 194
 195         fields[1].device = jtag_info->chain_pos;
 196         fields[1].num_bits = 32;
 197         fields[1].out_value = value_buf;
 198         fields[1].out_mask = NULL;
 199         fields[1].in_value = NULL;
 200         fields[1].in_check_value = NULL;
 201         fields[1].in_check_mask = NULL;
 202         fields[1].in_handler = NULL;
 203         fields[1].in_handler_priv = NULL;
 204
 205         fields[2].device = jtag_info->chain_pos;
 206         fields[2].num_bits = 6;
 207         fields[2].out_value = &reg_addr_buf;
 208         fields[2].out_mask = NULL;
 209         fields[2].in_value = NULL;
 210         fields[2].in_check_value = NULL;
 211         fields[2].in_check_mask = NULL;
 212         fields[2].in_handler = NULL;
 213         fields[2].in_handler_priv = NULL;
 214
 215         fields[3].device = jtag_info->chain_pos;
 216         fields[3].num_bits = 1;
 217         fields[3].out_value = &nr_w_buf;
 218         fields[3].out_mask = NULL;
 219         fields[3].in_value = NULL;
 220         fields[3].in_check_value = NULL;
 221         fields[3].in_check_mask = NULL;
 222         fields[3].in_handler = NULL;
 223         fields[3].in_handler_priv = NULL;
 224
 225         jtag_add_dr_scan(4, fields, -1);
 226
 227 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
 228         LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, value);
 229 #endif
 230
 231         return ERROR_OK;
 232 }
 233
 234 int arm920t_execute_cp15(target_t *target, u32 cp15_opcode, u32 arm_opcode)
 235 {
 236         armv4_5_common_t *armv4_5 = target->arch_info;
 237         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 238         arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 239         scan_field_t fields[4];
 240         u8 access_type_buf = 0;         /* interpreted access */
 241         u8 reg_addr_buf = 0x0;
 242         u8 nr_w_buf = 0;
 243         u8 cp15_opcode_buf[4];
 244
 245         jtag_add_end_state(TAP_RTI);
 246         arm_jtag_scann(jtag_info, 0xf);
 247         arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
 248
 249         buf_set_u32(cp15_opcode_buf, 0, 32, cp15_opcode);
 250
 251         fields[0].device = jtag_info->chain_pos;
 252         fields[0].num_bits = 1;
 253         fields[0].out_value = &access_type_buf;
 254         fields[0].out_mask = NULL;
 255         fields[0].in_value = NULL;
 256         fields[0].in_check_value = NULL;
 257         fields[0].in_check_mask = NULL;
 258         fields[0].in_handler = NULL;
 259         fields[0].in_handler_priv = NULL;
 260
 261         fields[1].device = jtag_info->chain_pos;
 262         fields[1].num_bits = 32;
 263         fields[1].out_value = cp15_opcode_buf;
 264         fields[1].out_mask = NULL;
 265         fields[1].in_value = NULL;
 266         fields[1].in_check_value = NULL;
 267         fields[1].in_check_mask = NULL;
 268         fields[1].in_handler = NULL;
 269         fields[1].in_handler_priv = NULL;
 270
 271         fields[2].device = jtag_info->chain_pos;
 272         fields[2].num_bits = 6;
 273         fields[2].out_value = &reg_addr_buf;
 274         fields[2].out_mask = NULL;
 275         fields[2].in_value = NULL;
 276         fields[2].in_check_value = NULL;
 277         fields[2].in_check_mask = NULL;
 278         fields[2].in_handler = NULL;
 279         fields[2].in_handler_priv = NULL;
 280
 281         fields[3].device = jtag_info->chain_pos;
 282         fields[3].num_bits = 1;
 283         fields[3].out_value = &nr_w_buf;
 284         fields[3].out_mask = NULL;
 285         fields[3].in_value = NULL;
 286         fields[3].in_check_value = NULL;
 287         fields[3].in_check_mask = NULL;
 288         fields[3].in_handler = NULL;
 289         fields[3].in_handler_priv = NULL;
 290
 291         jtag_add_dr_scan(4, fields, -1);
 292
 293         arm9tdmi_clock_out(jtag_info, arm_opcode, 0, NULL, 0);
 294         arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
 295         arm7_9_execute_sys_speed(target);
 296
 297         if (jtag_execute_queue() != ERROR_OK)
 298         {
 299                 LOG_ERROR("failed executing JTAG queue, exiting");
 300                 exit(-1);
 301         }
 302
 303         return ERROR_OK;
 304 }
 305
 306 int arm920t_read_cp15_interpreted(target_t *target, u32 cp15_opcode, u32 address, u32 *value)
 307 {
 308         armv4_5_common_t *armv4_5 = target->arch_info;
 309         u32* regs_p[1];
 310         u32 regs[2];
 311         u32 cp15c15 = 0x0;
 312
 313         /* load address into R1 */
 314         regs[1] = address;
 315         arm9tdmi_write_core_regs(target, 0x2, regs);
 316
 317         /* read-modify-write CP15 test state register
 318         * to enable interpreted access mode */
 319         arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
 320         jtag_execute_queue();
 321         cp15c15 |= 1;   /* set interpret mode */
 322         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 323
 324         /* execute CP15 instruction and ARM load (reading from coprocessor) */
 325         arm920t_execute_cp15(target, cp15_opcode, ARMV4_5_LDR(0, 1));
 326
 327         /* disable interpreted access mode */
 328         cp15c15 &= ~1U; /* clear interpret mode */
 329         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 330
 331         /* retrieve value from R0 */
 332         regs_p[0] = value;
 333         arm9tdmi_read_core_regs(target, 0x1, regs_p);
 334         jtag_execute_queue();
 335
 336 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
 337         LOG_DEBUG("cp15_opcode: %8.8x, address: %8.8x, value: %8.8x", cp15_opcode, address, *value);
 338 #endif
 339
 340         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
 341                 return ERROR_FAIL;
 342
 343         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = 1;
 344         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = 1;
 345
 346         return ERROR_OK;
 347 }
 348
 349 int arm920t_write_cp15_interpreted(target_t *target, u32 cp15_opcode, u32 value, u32 address)
 350 {
 351         u32 cp15c15 = 0x0;
 352         armv4_5_common_t *armv4_5 = target->arch_info;
 353         u32 regs[2];
 354
 355         /* load value, address into R0, R1 */
 356         regs[0] = value;
 357         regs[1] = address;
 358         arm9tdmi_write_core_regs(target, 0x3, regs);
 359
 360         /* read-modify-write CP15 test state register
 361         * to enable interpreted access mode */
 362         arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
 363         jtag_execute_queue();
 364         cp15c15 |= 1;   /* set interpret mode */
 365         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 366
 367         /* execute CP15 instruction and ARM store (writing to coprocessor) */
 368         arm920t_execute_cp15(target, cp15_opcode, ARMV4_5_STR(0, 1));
 369
 370         /* disable interpreted access mode */
 371         cp15c15 &= ~1U; /* set interpret mode */
 372         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 373
 374 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
 375         LOG_DEBUG("cp15_opcode: %8.8x, value: %8.8x, address: %8.8x", cp15_opcode, value, address);
 376 #endif
 377
 378         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
 379                 return ERROR_FAIL;
 380
 381         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = 1;
 382         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = 1;
 383
 384         return ERROR_OK;
 385 }
 386
 387 u32 arm920t_get_ttb(target_t *target)
 388 {
 389         int retval;
 390         u32 ttb = 0x0;
 391
 392         if ((retval = arm920t_read_cp15_interpreted(target, 0xeebf0f51, 0x0, &ttb)) != ERROR_OK)
 393                 return retval;
 394
 395         return ttb;
 396 }
 397
 398 void arm920t_disable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
 399 {
 400         u32 cp15_control;
 401
 402         /* read cp15 control register */
 403         arm920t_read_cp15_physical(target, 0x2, &cp15_control);
 404         jtag_execute_queue();
 405
 406         if (mmu)
 407                 cp15_control &= ~0x1U;
 408
 409         if (d_u_cache)
 410                 cp15_control &= ~0x4U;
 411
 412         if (i_cache)
 413                 cp15_control &= ~0x1000U;
 414
 415         arm920t_write_cp15_physical(target, 0x2, cp15_control);
 416 }
 417
 418 void arm920t_enable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
 419 {
 420         u32 cp15_control;
 421
 422         /* read cp15 control register */
 423         arm920t_read_cp15_physical(target, 0x2, &cp15_control);
 424         jtag_execute_queue();
 425
 426         if (mmu)
 427                 cp15_control |= 0x1U;
 428
 429         if (d_u_cache)
 430                 cp15_control |= 0x4U;
 431
 432         if (i_cache)
 433                 cp15_control |= 0x1000U;
 434
 435         arm920t_write_cp15_physical(target, 0x2, cp15_control);
 436 }
 437
 438 void arm920t_post_debug_entry(target_t *target)
 439 {
 440         u32 cp15c15;
 441         armv4_5_common_t *armv4_5 = target->arch_info;
 442         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 443         arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
 444         arm920t_common_t *arm920t = arm9tdmi->arch_info;
 445
 446         /* examine cp15 control reg */
 447         arm920t_read_cp15_physical(target, 0x2, &arm920t->cp15_control_reg);
 448         jtag_execute_queue();
 449         LOG_DEBUG("cp15_control_reg: %8.8x", arm920t->cp15_control_reg);
 450
 451         if (arm920t->armv4_5_mmu.armv4_5_cache.ctype == -1)
 452         {
 453                 u32 cache_type_reg;
 454                 /* identify caches */
 455                 arm920t_read_cp15_physical(target, 0x1, &cache_type_reg);
 456                 jtag_execute_queue();
 457                 armv4_5_identify_cache(cache_type_reg, &arm920t->armv4_5_mmu.armv4_5_cache);
 458         }
 459
 460         arm920t->armv4_5_mmu.mmu_enabled = (arm920t->cp15_control_reg & 0x1U) ? 1 : 0;
 461         arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (arm920t->cp15_control_reg & 0x4U) ? 1 : 0;
 462         arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (arm920t->cp15_control_reg & 0x1000U) ? 1 : 0;
 463
 464         /* save i/d fault status and address register */
 465         arm920t_read_cp15_interpreted(target, 0xee150f10, 0x0, &arm920t->d_fsr);
 466         arm920t_read_cp15_interpreted(target, 0xee150f30, 0x0, &arm920t->i_fsr);
 467         arm920t_read_cp15_interpreted(target, 0xee160f10, 0x0, &arm920t->d_far);
 468         arm920t_read_cp15_interpreted(target, 0xee160f30, 0x0, &arm920t->i_far);
 469
 470         LOG_DEBUG("D FSR: 0x%8.8x, D FAR: 0x%8.8x, I FSR: 0x%8.8x, I FAR: 0x%8.8x",
 471                 arm920t->d_fsr, arm920t->d_far, arm920t->i_fsr, arm920t->i_far);
 472
 473         if (arm920t->preserve_cache)
 474         {
 475                 /* read-modify-write CP15 test state register
 476                  * to disable I/D-cache linefills */
 477                 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
 478                 jtag_execute_queue();
 479                 cp15c15 |= 0x600;
 480                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 481         }
 482 }
 483
 484 void arm920t_pre_restore_context(target_t *target)
 485 {
 486         u32 cp15c15;
 487         armv4_5_common_t *armv4_5 = target->arch_info;
 488         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 489         arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
 490         arm920t_common_t *arm920t = arm9tdmi->arch_info;
 491
 492         /* restore i/d fault status and address register */
 493         arm920t_write_cp15_interpreted(target, 0xee050f10, arm920t->d_fsr, 0x0);
 494         arm920t_write_cp15_interpreted(target, 0xee050f30, arm920t->i_fsr, 0x0);
 495         arm920t_write_cp15_interpreted(target, 0xee060f10, arm920t->d_far, 0x0);
 496         arm920t_write_cp15_interpreted(target, 0xee060f30, arm920t->i_far, 0x0);
 497
 498         /* read-modify-write CP15 test state register
 499         * to reenable I/D-cache linefills */
 500         if (arm920t->preserve_cache)
 501         {
 502                 arm920t_read_cp15_physical(target, 0x1e, &cp15c15);
 503                 jtag_execute_queue();
 504                 cp15c15 &= ~0x600U;
 505                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 506         }
 507 }
 508
 509 int arm920t_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p, arm920t_common_t **arm920t_p)
 510 {
 511         armv4_5_common_t *armv4_5 = target->arch_info;
 512         arm7_9_common_t *arm7_9;
 513         arm9tdmi_common_t *arm9tdmi;
 514         arm920t_common_t *arm920t;
 515
 516         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 517         {
 518                 return -1;
 519         }
 520
 521         arm7_9 = armv4_5->arch_info;
 522         if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
 523         {
 524                 return -1;
 525         }
 526
 527         arm9tdmi = arm7_9->arch_info;
 528         if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
 529         {
 530                 return -1;
 531         }
 532
 533         arm920t = arm9tdmi->arch_info;
 534         if (arm920t->common_magic != ARM920T_COMMON_MAGIC)
 535         {
 536                 return -1;
 537         }
 538
 539         *armv4_5_p = armv4_5;
 540         *arm7_9_p = arm7_9;
 541         *arm9tdmi_p = arm9tdmi;
 542         *arm920t_p = arm920t;
 543
 544         return ERROR_OK;
 545 }
 546
 547 int arm920t_arch_state(struct target_s *target)
 548 {
 549         armv4_5_common_t *armv4_5 = target->arch_info;
 550         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 551         arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
 552         arm920t_common_t *arm920t = arm9tdmi->arch_info;
 553
 554         char *state[] =
 555         {
 556                 "disabled", "enabled"
 557         };
 558
 559         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
 560         {
 561                 LOG_ERROR("BUG: called for a non-ARMv4/5 target");
 562                 exit(-1);
 563         }
 564
 565         LOG_USER(       "target halted in %s state due to %s, current mode: %s\n"
 566                         "cpsr: 0x%8.8x pc: 0x%8.8x\n"
 567                         "MMU: %s, D-Cache: %s, I-Cache: %s",
 568                          armv4_5_state_strings[armv4_5->core_state],
 569                          Jim_Nvp_value2name_simple(nvp_target_debug_reason, target->debug_reason)->name,
 570                          armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
 571                          buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
 572                          buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
 573                          state[arm920t->armv4_5_mmu.mmu_enabled],
 574                          state[arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
 575                          state[arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled]);
 576
 577         return ERROR_OK;
 578 }
 579
 580 int arm920t_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 581 {
 582         int retval;
 583
 584         retval = arm7_9_read_memory(target, address, size, count, buffer);
 585
 586         return retval;
 587 }
 588
 589 int arm920t_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
 590 {
 591         int retval;
 592         armv4_5_common_t *armv4_5 = target->arch_info;
 593         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 594         arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
 595         arm920t_common_t *arm920t = arm9tdmi->arch_info;
 596
 597         if ((retval = arm7_9_write_memory(target, address, size, count, buffer)) != ERROR_OK)
 598                 return retval;
 599
 600         if (((size == 4) || (size == 2)) && (count == 1))
 601         {
 602                 if (arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled)
 603                 {
 604                         LOG_DEBUG("D-Cache enabled, writing through to main memory");
 605                         u32 pa, cb, ap;
 606                         int type, domain;
 607
 608                         pa = armv4_5_mmu_translate_va(target, &arm920t->armv4_5_mmu, address, &type, &cb, &domain, &ap);
 609                         if (type == -1)
 610                                 return ERROR_OK;
 611                         /* cacheable & bufferable means write-back region */
 612                         if (cb == 3)
 613                                 armv4_5_mmu_write_physical(target, &arm920t->armv4_5_mmu, pa, size, count, buffer);
 614                 }
 615
 616                 if (arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled)
 617                 {
 618                         LOG_DEBUG("I-Cache enabled, invalidating affected I-Cache line");
 619                         arm920t_write_cp15_interpreted(target, 0xee070f35, 0x0, address);
 620                 }
 621         }
 622
 623         return retval;
 624 }
 625
 626 int arm920t_soft_reset_halt(struct target_s *target)
 627 {
 628         armv4_5_common_t *armv4_5 = target->arch_info;
 629         arm7_9_common_t *arm7_9 = armv4_5->arch_info;
 630         arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
 631         arm920t_common_t *arm920t = arm9tdmi->arch_info;
 632         reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
 633
 634         target_halt(target);
 635
 636         long long then=timeval_ms();
 637         int timeout;
 638         while (!(timeout=((timeval_ms()-then)>1000)))
 639         {
 640                 if (buf_get_u32(dbg_stat->value, EICE_DBG_STATUS_DBGACK, 1) == 0)
 641                 {
 642                         embeddedice_read_reg(dbg_stat);
 643                         jtag_execute_queue();
 644                 } else
 645                 {
 646                         break;
 647                 }
 648                 if (debug_level>=3)
 649                 {
 650                         /* do not eat all CPU, time out after 1 se*/
 651                         alive_sleep(100);
 652                 } else
 653                 {
 654                         keep_alive();
 655                 }
 656         }
 657         if (timeout)
 658         {
 659                 LOG_ERROR("Failed to halt CPU after 1 sec");
 660                 return ERROR_TARGET_TIMEOUT;
 661         }
 662
 663         target->state = TARGET_HALTED;
 664
 665         /* SVC, ARM state, IRQ and FIQ disabled */
 666         buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 8, 0xd3);
 667         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
 668         armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
 669
 670         /* start fetching from 0x0 */
 671         buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
 672         armv4_5->core_cache->reg_list[15].dirty = 1;
 673         armv4_5->core_cache->reg_list[15].valid = 1;
 674
 675         armv4_5->core_mode = ARMV4_5_MODE_SVC;
 676         armv4_5->core_state = ARMV4_5_STATE_ARM;
 677
 678         arm920t_disable_mmu_caches(target, 1, 1, 1);
 679         arm920t->armv4_5_mmu.mmu_enabled = 0;
 680         arm920t->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
 681         arm920t->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
 682
 683         target_call_event_callbacks(target, TARGET_EVENT_HALTED);
 684
 685         return ERROR_OK;
 686 }
 687
 688 int arm920t_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
 689 {
 690         arm9tdmi_init_target(cmd_ctx, target);
 691
 692         return ERROR_OK;
 693
 694 }
 695
 696 int arm920t_quit(void)
 697 {
 698
 699         return ERROR_OK;
 700 }
 701
 702 int arm920t_init_arch_info(target_t *target, arm920t_common_t *arm920t, int chain_pos, const char *variant)
 703 {
 704         arm9tdmi_common_t *arm9tdmi = &arm920t->arm9tdmi_common;
 705         arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
 706
 707         /* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
 708          */
 709         arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
 710
 711         arm9tdmi->arch_info = arm920t;
 712         arm920t->common_magic = ARM920T_COMMON_MAGIC;
 713
 714         arm7_9->post_debug_entry = arm920t_post_debug_entry;
 715         arm7_9->pre_restore_context = arm920t_pre_restore_context;
 716
 717         arm920t->armv4_5_mmu.armv4_5_cache.ctype = -1;
 718         arm920t->armv4_5_mmu.get_ttb = arm920t_get_ttb;
 719         arm920t->armv4_5_mmu.read_memory = arm7_9_read_memory;
 720         arm920t->armv4_5_mmu.write_memory = arm7_9_write_memory;
 721         arm920t->armv4_5_mmu.disable_mmu_caches = arm920t_disable_mmu_caches;
 722         arm920t->armv4_5_mmu.enable_mmu_caches = arm920t_enable_mmu_caches;
 723         arm920t->armv4_5_mmu.has_tiny_pages = 1;
 724         arm920t->armv4_5_mmu.mmu_enabled = 0;
 725
 726         /* disabling linefills leads to lockups, so keep them enabled for now
 727          * this doesn't affect correctness, but might affect timing issues, if
 728          * important data is evicted from the cache during the debug session
 729          * */
 730         arm920t->preserve_cache = 0;
 731
 732         /* override hw single-step capability from ARM9TDMI */
 733         arm7_9->has_single_step = 1;
 734
 735         return ERROR_OK;
 736 }
 737
 738 int arm920t_target_create(struct target_s *target, Jim_Interp *interp)
 739 {
 740         arm920t_common_t *arm920t = calloc(1,sizeof(arm920t_common_t));
 741
 742         arm920t_init_arch_info(target, arm920t, target->chain_position, target->variant);
 743
 744         return ERROR_OK;
 745 }
 746
 747 int arm920t_register_commands(struct command_context_s *cmd_ctx)
 748 {
 749         int retval;
 750         command_t *arm920t_cmd;
 751
 752
 753         retval = arm9tdmi_register_commands(cmd_ctx);
 754
 755         arm920t_cmd = register_command(cmd_ctx, NULL, "arm920t", NULL, COMMAND_ANY, "arm920t specific commands");
 756
 757         register_command(cmd_ctx, arm920t_cmd, "cp15", arm920t_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <num> [value]");
 758         register_command(cmd_ctx, arm920t_cmd, "cp15i", arm920t_handle_cp15i_command, COMMAND_EXEC, "display/modify cp15 (interpreted access) <opcode> [value] [address]");
 759         register_command(cmd_ctx, arm920t_cmd, "cache_info", arm920t_handle_cache_info_command, COMMAND_EXEC, "display information about target caches");
 760         register_command(cmd_ctx, arm920t_cmd, "virt2phys", arm920t_handle_virt2phys_command, COMMAND_EXEC, "translate va to pa <va>");
 761
 762         register_command(cmd_ctx, arm920t_cmd, "mdw_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory words <physical addr> [count]");
 763         register_command(cmd_ctx, arm920t_cmd, "mdh_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory half-words <physical addr> [count]");
 764         register_command(cmd_ctx, arm920t_cmd, "mdb_phys", arm920t_handle_md_phys_command, COMMAND_EXEC, "display memory bytes <physical addr> [count]");
 765
 766         register_command(cmd_ctx, arm920t_cmd, "mww_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory word <physical addr> <value>");
 767         register_command(cmd_ctx, arm920t_cmd, "mwh_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory half-word <physical addr> <value>");
 768         register_command(cmd_ctx, arm920t_cmd, "mwb_phys", arm920t_handle_mw_phys_command, COMMAND_EXEC, "write memory byte <physical addr> <value>");
 769
 770         register_command(cmd_ctx, arm920t_cmd, "read_cache", arm920t_handle_read_cache_command, COMMAND_EXEC, "display I/D cache content");
 771         register_command(cmd_ctx, arm920t_cmd, "read_mmu", arm920t_handle_read_mmu_command, COMMAND_EXEC, "display I/D mmu content");
 772
 773         return ERROR_OK;
 774 }
 775
 776 int arm920t_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 777 {
 778         target_t *target = get_current_target(cmd_ctx);
 779         armv4_5_common_t *armv4_5;
 780         arm7_9_common_t *arm7_9;
 781         arm9tdmi_common_t *arm9tdmi;
 782         arm920t_common_t *arm920t;
 783         arm_jtag_t *jtag_info;
 784         u32 cp15c15;
 785         u32 cp15_ctrl, cp15_ctrl_saved;
 786         u32 regs[16];
 787         u32 *regs_p[16];
 788         u32 C15_C_D_Ind, C15_C_I_Ind;
 789         int i;
 790         FILE *output;
 791         arm920t_cache_line_t d_cache[8][64], i_cache[8][64];
 792         int segment, index;
 793
 794         if (argc != 1)
 795         {
 796                 command_print(cmd_ctx, "usage: arm920t read_cache <filename>");
 797                 return ERROR_OK;
 798         }
 799
 800         if ((output = fopen(args[0], "w")) == NULL)
 801         {
 802                 LOG_DEBUG("error opening cache content file");
 803                 return ERROR_OK;
 804         }
 805
 806         for (i = 0; i < 16; i++)
 807                 regs_p[i] = &regs[i];
 808
 809         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
 810         {
 811                 command_print(cmd_ctx, "current target isn't an ARM920t target");
 812                 return ERROR_OK;
 813         }
 814
 815         jtag_info = &arm7_9->jtag_info;
 816
 817         /* disable MMU and Caches */
 818         arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl);
 819         jtag_execute_queue();
 820         cp15_ctrl_saved = cp15_ctrl;
 821         cp15_ctrl &= ~(ARMV4_5_MMU_ENABLED | ARMV4_5_D_U_CACHE_ENABLED | ARMV4_5_I_CACHE_ENABLED);
 822         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl);
 823
 824         /* read CP15 test state register */
 825         arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15);
 826         jtag_execute_queue();
 827
 828         /* read DCache content */
 829         fprintf(output, "DCache:\n");
 830
 831         /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
 832         for (segment = 0; segment < arm920t->armv4_5_mmu.armv4_5_cache.d_u_size.nsets; segment++)
 833         {
 834                 fprintf(output, "\nsegment: %i\n----------", segment);
 835
 836                 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
 837                 regs[0] = 0x0 | (segment << 5);
 838                 arm9tdmi_write_core_regs(target, 0x1, regs);
 839
 840                 /* set interpret mode */
 841                 cp15c15 |= 0x1;
 842                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 843
 844                 /* D CAM Read, loads current victim into C15.C.D.Ind */
 845                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(1, 0));
 846
 847                 /* read current victim */
 848                 arm920t_read_cp15_physical(target, 0x3d, &C15_C_D_Ind);
 849
 850                 /* clear interpret mode */
 851                 cp15c15 &= ~0x1;
 852                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 853
 854                 for (index = 0; index < 64; index++)
 855                 {
 856                         /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
 857                         regs[0] = 0x0 | (segment << 5) | (index << 26);
 858                         arm9tdmi_write_core_regs(target, 0x1, regs);
 859
 860                         /* set interpret mode */
 861                         cp15c15 |= 0x1;
 862                         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 863
 864                         /* Write DCache victim */
 865                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
 866
 867                         /* Read D RAM */
 868                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,10,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
 869
 870                         /* Read D CAM */
 871                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,6,2), ARMV4_5_LDR(9, 0));
 872
 873                         /* clear interpret mode */
 874                         cp15c15 &= ~0x1;
 875                         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 876
 877                         /* read D RAM and CAM content */
 878                         arm9tdmi_read_core_regs(target, 0x3fe, regs_p);
 879                         jtag_execute_queue();
 880
 881                         d_cache[segment][index].cam = regs[9];
 882
 883                         /* mask LFSR[6] */
 884                         regs[9] &= 0xfffffffe;
 885                         fprintf(output, "\nsegment: %i, index: %i, CAM: 0x%8.8x, content (%s):\n", segment, index, regs[9], (regs[9] & 0x10) ? "valid" : "invalid");
 886
 887                         for (i = 1; i < 9; i++)
 888                         {
 889                                  d_cache[segment][index].data[i] = regs[i];
 890                                  fprintf(output, "%i: 0x%8.8x\n", i-1, regs[i]);
 891                         }
 892
 893                 }
 894
 895                 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
 896                 regs[0] = 0x0 | (segment << 5) | (C15_C_D_Ind << 26);
 897                 arm9tdmi_write_core_regs(target, 0x1, regs);
 898
 899                 /* set interpret mode */
 900                 cp15c15 |= 0x1;
 901                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 902
 903                 /* Write DCache victim */
 904                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,0), ARMV4_5_LDR(1, 0));
 905
 906                 /* clear interpret mode */
 907                 cp15c15 &= ~0x1;
 908                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 909         }
 910
 911         /* read ICache content */
 912         fprintf(output, "ICache:\n");
 913
 914         /* go through segments 0 to nsets (8 on ARM920T, 4 on ARM922T) */
 915         for (segment = 0; segment < arm920t->armv4_5_mmu.armv4_5_cache.d_u_size.nsets; segment++)
 916         {
 917                 fprintf(output, "segment: %i\n----------", segment);
 918
 919                 /* Ra: r0 = SBZ(31:8):segment(7:5):SBZ(4:0) */
 920                 regs[0] = 0x0 | (segment << 5);
 921                 arm9tdmi_write_core_regs(target, 0x1, regs);
 922
 923                 /* set interpret mode */
 924                 cp15c15 |= 0x1;
 925                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 926
 927                 /* I CAM Read, loads current victim into C15.C.I.Ind */
 928                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(1, 0));
 929
 930                 /* read current victim */
 931                 arm920t_read_cp15_physical(target, 0x3b, &C15_C_I_Ind);
 932
 933                 /* clear interpret mode */
 934                 cp15c15 &= ~0x1;
 935                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 936
 937                 for (index = 0; index < 64; index++)
 938                 {
 939                         /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
 940                         regs[0] = 0x0 | (segment << 5) | (index << 26);
 941                         arm9tdmi_write_core_regs(target, 0x1, regs);
 942
 943                         /* set interpret mode */
 944                         cp15c15 |= 0x1;
 945                         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 946
 947                         /* Write ICache victim */
 948                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
 949
 950                         /* Read I RAM */
 951                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,9,2), ARMV4_5_LDMIA(0, 0x1fe, 0, 0));
 952
 953                         /* Read I CAM */
 954                         arm920t_execute_cp15(target, ARMV4_5_MCR(15,2,0,15,5,2), ARMV4_5_LDR(9, 0));
 955
 956                         /* clear interpret mode */
 957                         cp15c15 &= ~0x1;
 958                         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 959
 960                         /* read I RAM and CAM content */
 961                         arm9tdmi_read_core_regs(target, 0x3fe, regs_p);
 962                         jtag_execute_queue();
 963
 964                         i_cache[segment][index].cam = regs[9];
 965
 966                         /* mask LFSR[6] */
 967                         regs[9] &= 0xfffffffe;
 968                         fprintf(output, "\nsegment: %i, index: %i, CAM: 0x%8.8x, content (%s):\n", segment, index, regs[9], (regs[9] & 0x10) ? "valid" : "invalid");
 969
 970                         for (i = 1; i < 9; i++)
 971                         {
 972                                  i_cache[segment][index].data[i] = regs[i];
 973                                  fprintf(output, "%i: 0x%8.8x\n", i-1, regs[i]);
 974                         }
 975
 976                 }
 977
 978
 979                 /* Ra: r0 = index(31:26):SBZ(25:8):segment(7:5):SBZ(4:0) */
 980                 regs[0] = 0x0 | (segment << 5) | (C15_C_D_Ind << 26);
 981                 arm9tdmi_write_core_regs(target, 0x1, regs);
 982
 983                 /* set interpret mode */
 984                 cp15c15 |= 0x1;
 985                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
 986
 987                 /* Write ICache victim */
 988                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,9,1,1), ARMV4_5_LDR(1, 0));
 989
 990                 /* clear interpret mode */
 991                 cp15c15 &= ~0x1;
 992                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
 993         }
 994
 995         /* restore CP15 MMU and Cache settings */
 996         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved);
 997
 998         command_print(cmd_ctx, "cache content successfully output to %s", args[0]);
 999
1000         fclose(output);
1001
1002         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
1003                 return ERROR_FAIL;
1004
1005         /* mark registers dirty. */
1006         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).valid;
1007         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).valid;
1008         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).valid;
1009         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).valid;
1010         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).valid;
1011         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).valid;
1012         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).valid;
1013         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).valid;
1014         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).valid;
1015         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).valid;
1016
1017         return ERROR_OK;
1018 }
1019
1020 int arm920t_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1021 {
1022         target_t *target = get_current_target(cmd_ctx);
1023         armv4_5_common_t *armv4_5;
1024         arm7_9_common_t *arm7_9;
1025         arm9tdmi_common_t *arm9tdmi;
1026         arm920t_common_t *arm920t;
1027         arm_jtag_t *jtag_info;
1028         u32 cp15c15;
1029         u32 cp15_ctrl, cp15_ctrl_saved;
1030         u32 regs[16];
1031         u32 *regs_p[16];
1032         int i;
1033         FILE *output;
1034         u32 Dlockdown, Ilockdown;
1035         arm920t_tlb_entry_t d_tlb[64], i_tlb[64];
1036         int victim;
1037
1038         if (argc != 1)
1039         {
1040                 command_print(cmd_ctx, "usage: arm920t read_mmu <filename>");
1041                 return ERROR_OK;
1042         }
1043
1044         if ((output = fopen(args[0], "w")) == NULL)
1045         {
1046                 LOG_DEBUG("error opening mmu content file");
1047                 return ERROR_OK;
1048         }
1049
1050         for (i = 0; i < 16; i++)
1051                 regs_p[i] = &regs[i];
1052
1053         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1054         {
1055                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1056                 return ERROR_OK;
1057         }
1058
1059         jtag_info = &arm7_9->jtag_info;
1060
1061         /* disable MMU and Caches */
1062         arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), &cp15_ctrl);
1063         jtag_execute_queue();
1064         cp15_ctrl_saved = cp15_ctrl;
1065         cp15_ctrl &= ~(ARMV4_5_MMU_ENABLED | ARMV4_5_D_U_CACHE_ENABLED | ARMV4_5_I_CACHE_ENABLED);
1066         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl);
1067
1068         /* read CP15 test state register */
1069         arm920t_read_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), &cp15c15);
1070         jtag_execute_queue();
1071
1072         /* prepare reading D TLB content
1073          * */
1074
1075         /* set interpret mode */
1076         cp15c15 |= 0x1;
1077         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1078
1079         /* Read D TLB lockdown */
1080         arm920t_execute_cp15(target, ARMV4_5_MRC(15,0,0,10,0,0), ARMV4_5_LDR(1, 0));
1081
1082         /* clear interpret mode */
1083         cp15c15 &= ~0x1;
1084         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1085
1086         /* read D TLB lockdown stored to r1 */
1087         arm9tdmi_read_core_regs(target, 0x2, regs_p);
1088         jtag_execute_queue();
1089         Dlockdown = regs[1];
1090
1091         for (victim = 0; victim < 64; victim += 8)
1092         {
1093                 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1094                  * base remains unchanged, victim goes through entries 0 to 63 */
1095                 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1096                 arm9tdmi_write_core_regs(target, 0x2, regs);
1097
1098                 /* set interpret mode */
1099                 cp15c15 |= 0x1;
1100                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1101
1102                 /* Write D TLB lockdown */
1103                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1104
1105                 /* Read D TLB CAM */
1106                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,6,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1107
1108                 /* clear interpret mode */
1109                 cp15c15 &= ~0x1;
1110                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1111
1112                 /* read D TLB CAM content stored to r2-r9 */
1113                 arm9tdmi_read_core_regs(target, 0x3fc, regs_p);
1114                 jtag_execute_queue();
1115
1116                 for (i = 0; i < 8; i++)
1117                         d_tlb[victim + i].cam = regs[i + 2];
1118         }
1119
1120         for (victim = 0; victim < 64; victim++)
1121         {
1122                 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1123                  * base remains unchanged, victim goes through entries 0 to 63 */
1124                 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1125                 arm9tdmi_write_core_regs(target, 0x2, regs);
1126
1127                 /* set interpret mode */
1128                 cp15c15 |= 0x1;
1129                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1130
1131                 /* Write D TLB lockdown */
1132                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1133
1134                 /* Read D TLB RAM1 */
1135                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,10,4), ARMV4_5_LDR(2,0));
1136
1137                 /* Read D TLB RAM2 */
1138                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,2,5), ARMV4_5_LDR(3,0));
1139
1140                 /* clear interpret mode */
1141                 cp15c15 &= ~0x1;
1142                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1143
1144                 /* read D TLB RAM content stored to r2 and r3 */
1145                 arm9tdmi_read_core_regs(target, 0xc, regs_p);
1146                 jtag_execute_queue();
1147
1148                 d_tlb[victim].ram1 = regs[2];
1149                 d_tlb[victim].ram2 = regs[3];
1150         }
1151
1152         /* restore D TLB lockdown */
1153         regs[1] = Dlockdown;
1154         arm9tdmi_write_core_regs(target, 0x2, regs);
1155
1156         /* Write D TLB lockdown */
1157         arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,0), ARMV4_5_STR(1, 0));
1158
1159         /* prepare reading I TLB content
1160          * */
1161
1162         /* set interpret mode */
1163         cp15c15 |= 0x1;
1164         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1165
1166         /* Read I TLB lockdown */
1167         arm920t_execute_cp15(target, ARMV4_5_MRC(15,0,0,10,0,1), ARMV4_5_LDR(1, 0));
1168
1169         /* clear interpret mode */
1170         cp15c15 &= ~0x1;
1171         arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1172
1173         /* read I TLB lockdown stored to r1 */
1174         arm9tdmi_read_core_regs(target, 0x2, regs_p);
1175         jtag_execute_queue();
1176         Ilockdown = regs[1];
1177
1178         for (victim = 0; victim < 64; victim += 8)
1179         {
1180                 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1181                  * base remains unchanged, victim goes through entries 0 to 63 */
1182                 regs[1] = (Ilockdown & 0xfc000000) | (victim << 20);
1183                 arm9tdmi_write_core_regs(target, 0x2, regs);
1184
1185                 /* set interpret mode */
1186                 cp15c15 |= 0x1;
1187                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1188
1189                 /* Write I TLB lockdown */
1190                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1191
1192                 /* Read I TLB CAM */
1193                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,5,4), ARMV4_5_LDMIA(0, 0x3fc, 0, 0));
1194
1195                 /* clear interpret mode */
1196                 cp15c15 &= ~0x1;
1197                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1198
1199                 /* read I TLB CAM content stored to r2-r9 */
1200                 arm9tdmi_read_core_regs(target, 0x3fc, regs_p);
1201                 jtag_execute_queue();
1202
1203                 for (i = 0; i < 8; i++)
1204                         i_tlb[i + victim].cam = regs[i + 2];
1205         }
1206
1207         for (victim = 0; victim < 64; victim++)
1208         {
1209                 /* new lockdown value: base[31:26]:victim[25:20]:SBZ[19:1]:p[0]
1210                  * base remains unchanged, victim goes through entries 0 to 63 */
1211                 regs[1] = (Dlockdown & 0xfc000000) | (victim << 20);
1212                 arm9tdmi_write_core_regs(target, 0x2, regs);
1213
1214                 /* set interpret mode */
1215                 cp15c15 |= 0x1;
1216                 arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0xf, 0), cp15c15);
1217
1218                 /* Write I TLB lockdown */
1219                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1220
1221                 /* Read I TLB RAM1 */
1222                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,9,4), ARMV4_5_LDR(2,0));
1223
1224                 /* Read I TLB RAM2 */
1225                 arm920t_execute_cp15(target, ARMV4_5_MCR(15,4,0,15,1,5), ARMV4_5_LDR(3,0));
1226
1227                 /* clear interpret mode */
1228                 cp15c15 &= ~0x1;
1229                 arm920t_write_cp15_physical(target, 0x1e, cp15c15);
1230
1231                 /* read I TLB RAM content stored to r2 and r3 */
1232                 arm9tdmi_read_core_regs(target, 0xc, regs_p);
1233                 jtag_execute_queue();
1234
1235                 i_tlb[victim].ram1 = regs[2];
1236                 i_tlb[victim].ram2 = regs[3];
1237         }
1238
1239         /* restore I TLB lockdown */
1240         regs[1] = Ilockdown;
1241         arm9tdmi_write_core_regs(target, 0x2, regs);
1242
1243         /* Write I TLB lockdown */
1244         arm920t_execute_cp15(target, ARMV4_5_MCR(15,0,0,10,0,1), ARMV4_5_STR(1, 0));
1245
1246         /* restore CP15 MMU and Cache settings */
1247         arm920t_write_cp15_physical(target, ARM920T_CP15_PHYS_ADDR(0, 0x1, 0), cp15_ctrl_saved);
1248
1249         /* output data to file */
1250         fprintf(output, "D TLB content:\n");
1251         for (i = 0; i < 64; i++)
1252         {
1253                 fprintf(output, "%i: 0x%8.8x 0x%8.8x 0x%8.8x %s\n", i, d_tlb[i].cam, d_tlb[i].ram1, d_tlb[i].ram2, (d_tlb[i].cam & 0x20) ? "(valid)" : "(invalid)");
1254         }
1255
1256         fprintf(output, "\n\nI TLB content:\n");
1257         for (i = 0; i < 64; i++)
1258         {
1259                 fprintf(output, "%i: 0x%8.8x 0x%8.8x 0x%8.8x %s\n", i, i_tlb[i].cam, i_tlb[i].ram1, i_tlb[i].ram2, (i_tlb[i].cam & 0x20) ? "(valid)" : "(invalid)");
1260         }
1261
1262         command_print(cmd_ctx, "mmu content successfully output to %s", args[0]);
1263
1264         fclose(output);
1265
1266         if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
1267                 return ERROR_FAIL;
1268
1269         /* mark registers dirty */
1270         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 0).valid;
1271         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 1).valid;
1272         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 2).valid;
1273         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 3).valid;
1274         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 4).valid;
1275         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 5).valid;
1276         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 6).valid;
1277         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 7).valid;
1278         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 8).valid;
1279         ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).dirty = ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5->core_mode, 9).valid;
1280
1281         return ERROR_OK;
1282 }
1283 int arm920t_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1284 {
1285         int retval;
1286         target_t *target = get_current_target(cmd_ctx);
1287         armv4_5_common_t *armv4_5;
1288         arm7_9_common_t *arm7_9;
1289         arm9tdmi_common_t *arm9tdmi;
1290         arm920t_common_t *arm920t;
1291         arm_jtag_t *jtag_info;
1292
1293         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1294         {
1295                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1296                 return ERROR_OK;
1297         }
1298
1299         jtag_info = &arm7_9->jtag_info;
1300
1301         if (target->state != TARGET_HALTED)
1302         {
1303                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1304                 return ERROR_OK;
1305         }
1306
1307         /* one or more argument, access a single register (write if second argument is given */
1308         if (argc >= 1)
1309         {
1310                 int address = strtoul(args[0], NULL, 0);
1311
1312                 if (argc == 1)
1313                 {
1314                         u32 value;
1315                         if ((retval = arm920t_read_cp15_physical(target, address, &value)) != ERROR_OK)
1316                         {
1317                                 command_print(cmd_ctx, "couldn't access reg %i", address);
1318                                 return ERROR_OK;
1319                         }
1320                         jtag_execute_queue();
1321
1322                         command_print(cmd_ctx, "%i: %8.8x", address, value);
1323                 }
1324                 else if (argc == 2)
1325                 {
1326                         u32 value = strtoul(args[1], NULL, 0);
1327                         if ((retval = arm920t_write_cp15_physical(target, address, value)) != ERROR_OK)
1328                         {
1329                                 command_print(cmd_ctx, "couldn't access reg %i", address);
1330                                 return ERROR_OK;
1331                         }
1332                         command_print(cmd_ctx, "%i: %8.8x", address, value);
1333                 }
1334         }
1335
1336         return ERROR_OK;
1337 }
1338
1339 int arm920t_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1340 {
1341         int retval;
1342         target_t *target = get_current_target(cmd_ctx);
1343         armv4_5_common_t *armv4_5;
1344         arm7_9_common_t *arm7_9;
1345         arm9tdmi_common_t *arm9tdmi;
1346         arm920t_common_t *arm920t;
1347         arm_jtag_t *jtag_info;
1348
1349         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1350         {
1351                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1352                 return ERROR_OK;
1353         }
1354
1355         jtag_info = &arm7_9->jtag_info;
1356
1357         if (target->state != TARGET_HALTED)
1358         {
1359                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1360                 return ERROR_OK;
1361         }
1362
1363         /* one or more argument, access a single register (write if second argument is given */
1364         if (argc >= 1)
1365         {
1366                 u32 opcode = strtoul(args[0], NULL, 0);
1367
1368                 if (argc == 1)
1369                 {
1370                         u32 value;
1371                         if ((retval = arm920t_read_cp15_interpreted(target, opcode, 0x0, &value)) != ERROR_OK)
1372                         {
1373                                 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1374                                 return ERROR_OK;
1375                         }
1376
1377                         command_print(cmd_ctx, "%8.8x: %8.8x", opcode, value);
1378                 }
1379                 else if (argc == 2)
1380                 {
1381                         u32 value = strtoul(args[1], NULL, 0);
1382                         if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, 0)) != ERROR_OK)
1383                         {
1384                                 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1385                                 return ERROR_OK;
1386                         }
1387                         command_print(cmd_ctx, "%8.8x: %8.8x", opcode, value);
1388                 }
1389                 else if (argc == 3)
1390                 {
1391                         u32 value = strtoul(args[1], NULL, 0);
1392                         u32 address = strtoul(args[2], NULL, 0);
1393                         if ((retval = arm920t_write_cp15_interpreted(target, opcode, value, address)) != ERROR_OK)
1394                         {
1395                                 command_print(cmd_ctx, "couldn't execute %8.8x", opcode);
1396                                 return ERROR_OK;
1397                         }
1398                         command_print(cmd_ctx, "%8.8x: %8.8x %8.8x", opcode, value, address);
1399                 }
1400         }
1401         else
1402         {
1403                 command_print(cmd_ctx, "usage: arm920t cp15i <opcode> [value] [address]");
1404         }
1405
1406         return ERROR_OK;
1407 }
1408
1409 int arm920t_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1410 {
1411         target_t *target = get_current_target(cmd_ctx);
1412         armv4_5_common_t *armv4_5;
1413         arm7_9_common_t *arm7_9;
1414         arm9tdmi_common_t *arm9tdmi;
1415         arm920t_common_t *arm920t;
1416
1417         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1418         {
1419                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1420                 return ERROR_OK;
1421         }
1422
1423         return armv4_5_handle_cache_info_command(cmd_ctx, &arm920t->armv4_5_mmu.armv4_5_cache);
1424 }
1425
1426 int arm920t_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1427 {
1428         target_t *target = get_current_target(cmd_ctx);
1429         armv4_5_common_t *armv4_5;
1430         arm7_9_common_t *arm7_9;
1431         arm9tdmi_common_t *arm9tdmi;
1432         arm920t_common_t *arm920t;
1433         arm_jtag_t *jtag_info;
1434
1435         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1436         {
1437                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1438                 return ERROR_OK;
1439         }
1440
1441         jtag_info = &arm7_9->jtag_info;
1442
1443         if (target->state != TARGET_HALTED)
1444         {
1445                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1446                 return ERROR_OK;
1447         }
1448
1449         return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);
1450 }
1451
1452 int arm920t_handle_md_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1453 {
1454         target_t *target = get_current_target(cmd_ctx);
1455         armv4_5_common_t *armv4_5;
1456         arm7_9_common_t *arm7_9;
1457         arm9tdmi_common_t *arm9tdmi;
1458         arm920t_common_t *arm920t;
1459         arm_jtag_t *jtag_info;
1460
1461         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1462         {
1463                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1464                 return ERROR_OK;
1465         }
1466
1467         jtag_info = &arm7_9->jtag_info;
1468
1469         if (target->state != TARGET_HALTED)
1470         {
1471                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1472                 return ERROR_OK;
1473         }
1474
1475         return armv4_5_mmu_handle_md_phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);
1476 }
1477
1478 int arm920t_handle_mw_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
1479 {
1480         target_t *target = get_current_target(cmd_ctx);
1481         armv4_5_common_t *armv4_5;
1482         arm7_9_common_t *arm7_9;
1483         arm9tdmi_common_t *arm9tdmi;
1484         arm920t_common_t *arm920t;
1485         arm_jtag_t *jtag_info;
1486
1487         if (arm920t_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm920t) != ERROR_OK)
1488         {
1489                 command_print(cmd_ctx, "current target isn't an ARM920t target");
1490                 return ERROR_OK;
1491         }
1492
1493         jtag_info = &arm7_9->jtag_info;
1494
1495         if (target->state != TARGET_HALTED)
1496         {
1497                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
1498                 return ERROR_OK;
1499         }
1500
1501         return armv4_5_mmu_handle_mw_phys_command(cmd_ctx, cmd, args, argc, target, &arm920t->armv4_5_mmu);
1502 }