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   1 /***************************************************************************\r
   2  *   Copyright (C) 2005 by Dominic Rath                                    *\r
   3  *   Dominic.Rath@gmx.de                                                   *\r
   4  *                                                                         *\r
   5  *   This program is free software; you can redistribute it and/or modify  *\r
   6  *   it under the terms of the GNU General Public License as published by  *\r
   7  *   the Free Software Foundation; either version 2 of the License, or     *\r
   8  *   (at your option) any later version.                                   *\r
   9  *                                                                         *\r
  10  *   This program is distributed in the hope that it will be useful,       *\r
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *\r
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *\r
  13  *   GNU General Public License for more details.                          *\r
  14  *                                                                         *\r
  15  *   You should have received a copy of the GNU General Public License     *\r
  16  *   along with this program; if not, write to the                         *\r
  17  *   Free Software Foundation, Inc.,                                       *\r
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *\r
  19  ***************************************************************************/\r
  20 #ifdef HAVE_CONFIG_H\r
  21 #include "config.h"\r
  22 #endif\r
  23 \r
  24 #include "arm966e.h"\r
  25 \r
  26 #include "arm7_9_common.h"\r
  27 #include "register.h"\r
  28 #include "target.h"\r
  29 #include "armv4_5.h"\r
  30 #include "embeddedice.h"\r
  31 #include "log.h"\r
  32 #include "jtag.h"\r
  33 #include "arm_jtag.h"\r
  34 \r
  35 #include <stdlib.h>\r
  36 #include <string.h>\r
  37 \r
  38 #if 0\r
  39 #define _DEBUG_INSTRUCTION_EXECUTION_\r
  40 #endif\r
  41 \r
  42 /* cli handling */\r
  43 int arm966e_register_commands(struct command_context_s *cmd_ctx);\r
  44 \r
  45 /* forward declarations */\r
  46 int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);\r
  47 int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target);\r
  48 int arm966e_quit(void);\r
  49 \r
  50 target_type_t arm966e_target =\r
  51 {\r
  52         .name = "arm966e",\r
  53 \r
  54         .poll = arm7_9_poll,\r
  55         .arch_state = armv4_5_arch_state,\r
  56 \r
  57         .target_request_data = arm7_9_target_request_data,\r
  58 \r
  59         .halt = arm7_9_halt,\r
  60         .resume = arm7_9_resume,\r
  61         .step = arm7_9_step,\r
  62 \r
  63         .assert_reset = arm7_9_assert_reset,\r
  64         .deassert_reset = arm7_9_deassert_reset,\r
  65         .soft_reset_halt = arm7_9_soft_reset_halt,\r
  66         .prepare_reset_halt = arm7_9_prepare_reset_halt,\r
  67 \r
  68         .get_gdb_reg_list = armv4_5_get_gdb_reg_list,\r
  69 \r
  70         .read_memory = arm7_9_read_memory,\r
  71         .write_memory = arm7_9_write_memory,\r
  72         .bulk_write_memory = arm7_9_bulk_write_memory,\r
  73         .checksum_memory = arm7_9_checksum_memory,\r
  74         \r
  75         .run_algorithm = armv4_5_run_algorithm,\r
  76         \r
  77         .add_breakpoint = arm7_9_add_breakpoint,\r
  78         .remove_breakpoint = arm7_9_remove_breakpoint,\r
  79         .add_watchpoint = arm7_9_add_watchpoint,\r
  80         .remove_watchpoint = arm7_9_remove_watchpoint,\r
  81 \r
  82         .register_commands = arm966e_register_commands,\r
  83         .target_command = arm966e_target_command,\r
  84         .init_target = arm966e_init_target,\r
  85         .quit = arm966e_quit,\r
  86 };\r
  87 \r
  88 int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target)\r
  89 {\r
  90         arm9tdmi_init_target(cmd_ctx, target);\r
  91                 \r
  92         return ERROR_OK;\r
  93 }\r
  94 \r
  95 int arm966e_quit(void)\r
  96 {\r
  97         \r
  98         return ERROR_OK;\r
  99 }\r
 100 \r
 101 int arm966e_init_arch_info(target_t *target, arm966e_common_t *arm966e, int chain_pos, char *variant)\r
 102 {\r
 103         arm9tdmi_common_t *arm9tdmi = &arm966e->arm9tdmi_common;\r
 104         arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;\r
 105         \r
 106         arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);\r
 107 \r
 108         arm9tdmi->arch_info = arm966e;\r
 109         arm966e->common_magic = ARM966E_COMMON_MAGIC;\r
 110         \r
 111         /* The ARM966E-S implements the ARMv5TE architecture which\r
 112          * has the BKPT instruction, so we don't have to use a watchpoint comparator\r
 113          */\r
 114         arm7_9->arm_bkpt = ARMV5_BKPT(0x0);\r
 115         arm7_9->thumb_bkpt = ARMV5_T_BKPT(0x0) & 0xffff;\r
 116         \r
 117         arm7_9->sw_bkpts_use_wp = 0;\r
 118         arm7_9->sw_bkpts_enabled = 1;\r
 119         \r
 120         return ERROR_OK;\r
 121 }\r
 122 \r
 123 int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)\r
 124 {\r
 125         int chain_pos;\r
 126         char *variant = NULL;\r
 127         arm966e_common_t *arm966e = malloc(sizeof(arm966e_common_t));\r
 128         \r
 129         if (argc < 4)\r
 130         {\r
 131                 ERROR("'target arm966e' requires at least one additional argument");\r
 132                 exit(-1);\r
 133         }\r
 134         \r
 135         chain_pos = strtoul(args[3], NULL, 0);\r
 136         \r
 137         if (argc >= 5)\r
 138                 variant = args[4];\r
 139         \r
 140         DEBUG("chain_pos: %i, variant: %s", chain_pos, variant);\r
 141         \r
 142         arm966e_init_arch_info(target, arm966e, chain_pos, variant);\r
 143 \r
 144         return ERROR_OK;\r
 145 }\r
 146 \r
 147 int arm966e_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, arm966e_common_t **arm966e_p)\r
 148 {\r
 149         armv4_5_common_t *armv4_5 = target->arch_info;\r
 150         arm7_9_common_t *arm7_9;\r
 151         arm9tdmi_common_t *arm9tdmi;\r
 152         arm966e_common_t *arm966e;\r
 153         \r
 154         if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)\r
 155         {\r
 156                 return -1;\r
 157         }\r
 158         \r
 159         arm7_9 = armv4_5->arch_info;\r
 160         if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)\r
 161         {\r
 162                 return -1;\r
 163         }\r
 164         \r
 165         arm9tdmi = arm7_9->arch_info;\r
 166         if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)\r
 167         {\r
 168                 return -1;\r
 169         }\r
 170         \r
 171         arm966e = arm9tdmi->arch_info;\r
 172         if (arm966e->common_magic != ARM966E_COMMON_MAGIC)\r
 173         {\r
 174                 return -1;\r
 175         }\r
 176         \r
 177         *armv4_5_p = armv4_5;\r
 178         *arm7_9_p = arm7_9;\r
 179         *arm9tdmi_p = arm9tdmi;\r
 180         *arm966e_p = arm966e;\r
 181         \r
 182         return ERROR_OK;\r
 183 }\r
 184 \r
 185 int arm966e_read_cp15(target_t *target, int reg_addr, u32 *value)\r
 186 {\r
 187         armv4_5_common_t *armv4_5 = target->arch_info;\r
 188         arm7_9_common_t *arm7_9 = armv4_5->arch_info;\r
 189         arm_jtag_t *jtag_info = &arm7_9->jtag_info;\r
 190         scan_field_t fields[3];\r
 191         u8 reg_addr_buf = reg_addr & 0x3f;\r
 192         u8 nr_w_buf = 0;\r
 193         \r
 194         jtag_add_end_state(TAP_RTI);\r
 195         arm_jtag_scann(jtag_info, 0xf);\r
 196         arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);\r
 197 \r
 198         fields[0].device = jtag_info->chain_pos;\r
 199         fields[0].num_bits = 32;\r
 200         fields[0].out_value = NULL;\r
 201         fields[0].out_mask = NULL;\r
 202         fields[0].in_value = NULL;\r
 203         fields[0].in_check_value = NULL;\r
 204         fields[0].in_check_mask = NULL;\r
 205         fields[0].in_handler = NULL;\r
 206         fields[0].in_handler_priv = NULL;\r
 207 \r
 208         fields[1].device = jtag_info->chain_pos;\r
 209         fields[1].num_bits = 6;\r
 210         fields[1].out_value = &reg_addr_buf;\r
 211         fields[1].out_mask = NULL;\r
 212         fields[1].in_value = NULL;\r
 213         fields[1].in_check_value = NULL;\r
 214         fields[1].in_check_mask = NULL;\r
 215         fields[1].in_handler = NULL;\r
 216         fields[1].in_handler_priv = NULL;\r
 217 \r
 218         fields[2].device = jtag_info->chain_pos;\r
 219         fields[2].num_bits = 1;\r
 220         fields[2].out_value = &nr_w_buf;\r
 221         fields[2].out_mask = NULL;\r
 222         fields[2].in_value = NULL;\r
 223         fields[2].in_check_value = NULL;\r
 224         fields[2].in_check_mask = NULL;\r
 225         fields[2].in_handler = NULL;\r
 226         fields[2].in_handler_priv = NULL;\r
 227         \r
 228         jtag_add_dr_scan(3, fields, -1);\r
 229 \r
 230         fields[0].in_handler_priv = value;\r
 231         fields[0].in_handler = arm_jtag_buf_to_u32;\r
 232 \r
 233         jtag_add_dr_scan(3, fields, -1);\r
 234 \r
 235 #ifdef _DEBUG_INSTRUCTION_EXECUTION_\r
 236         jtag_execute_queue();\r
 237         DEBUG("addr: 0x%x value: %8.8x", reg_addr, *value);\r
 238 #endif\r
 239 \r
 240         return ERROR_OK;\r
 241 }\r
 242 \r
 243 int arm966e_write_cp15(target_t *target, int reg_addr, u32 value)\r
 244 {\r
 245         armv4_5_common_t *armv4_5 = target->arch_info;\r
 246         arm7_9_common_t *arm7_9 = armv4_5->arch_info;\r
 247         arm_jtag_t *jtag_info = &arm7_9->jtag_info;\r
 248         scan_field_t fields[3];\r
 249         u8 reg_addr_buf = reg_addr & 0x3f;\r
 250         u8 nr_w_buf = 1;\r
 251         u8 value_buf[4];\r
 252         \r
 253         buf_set_u32(value_buf, 0, 32, value);\r
 254         \r
 255         jtag_add_end_state(TAP_RTI);\r
 256         arm_jtag_scann(jtag_info, 0xf);\r
 257         arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);\r
 258 \r
 259         fields[0].device = jtag_info->chain_pos;\r
 260         fields[0].num_bits = 32;\r
 261         fields[0].out_value = value_buf;\r
 262         fields[0].out_mask = NULL;\r
 263         fields[0].in_value = NULL;\r
 264         fields[0].in_check_value = NULL;\r
 265         fields[0].in_check_mask = NULL;\r
 266         fields[0].in_handler = NULL;\r
 267         fields[0].in_handler_priv = NULL;\r
 268 \r
 269         fields[1].device = jtag_info->chain_pos;\r
 270         fields[1].num_bits = 6;\r
 271         fields[1].out_value = &reg_addr_buf;\r
 272         fields[1].out_mask = NULL;\r
 273         fields[1].in_value = NULL;\r
 274         fields[1].in_check_value = NULL;\r
 275         fields[1].in_check_mask = NULL;\r
 276         fields[1].in_handler = NULL;\r
 277         fields[1].in_handler_priv = NULL;\r
 278 \r
 279         fields[2].device = jtag_info->chain_pos;\r
 280         fields[2].num_bits = 1;\r
 281         fields[2].out_value = &nr_w_buf;\r
 282         fields[2].out_mask = NULL;\r
 283         fields[2].in_value = NULL;\r
 284         fields[2].in_check_value = NULL;\r
 285         fields[2].in_check_mask = NULL;\r
 286         fields[2].in_handler = NULL;\r
 287         fields[2].in_handler_priv = NULL;\r
 288         \r
 289         jtag_add_dr_scan(3, fields, -1);\r
 290 \r
 291 #ifdef _DEBUG_INSTRUCTION_EXECUTION_\r
 292         DEBUG("addr: 0x%x value: %8.8x", reg_addr, value);\r
 293 #endif\r
 294 \r
 295         return ERROR_OK;\r
 296 }\r
 297 \r
 298 int arm966e_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)\r
 299 {\r
 300         int retval;\r
 301         target_t *target = get_current_target(cmd_ctx);\r
 302         armv4_5_common_t *armv4_5;\r
 303         arm7_9_common_t *arm7_9;\r
 304         arm9tdmi_common_t *arm9tdmi;\r
 305         arm966e_common_t *arm966e;\r
 306         arm_jtag_t *jtag_info;\r
 307 \r
 308         if (arm966e_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm966e) != ERROR_OK)\r
 309         {\r
 310                 command_print(cmd_ctx, "current target isn't an ARM966e target");\r
 311                 return ERROR_OK;\r
 312         }\r
 313         \r
 314         jtag_info = &arm7_9->jtag_info;\r
 315         \r
 316         if (target->state != TARGET_HALTED)\r
 317         {\r
 318                 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);\r
 319                 return ERROR_OK;\r
 320         }\r
 321 \r
 322         /* one or more argument, access a single register (write if second argument is given */\r
 323         if (argc >= 1)\r
 324         {\r
 325                 int address = strtoul(args[0], NULL, 0);\r
 326 \r
 327                 if (argc == 1)\r
 328                 {\r
 329                         u32 value;\r
 330                         if ((retval = arm966e_read_cp15(target, address, &value)) != ERROR_OK)\r
 331                         {\r
 332                                 command_print(cmd_ctx, "couldn't access reg %i", address);\r
 333                                 return ERROR_OK;\r
 334                         }\r
 335                         jtag_execute_queue();\r
 336                         \r
 337                         command_print(cmd_ctx, "%i: %8.8x", address, value);\r
 338                 }\r
 339                 else if (argc == 2)\r
 340                 {\r
 341                         u32 value = strtoul(args[1], NULL, 0);\r
 342                         if ((retval = arm966e_write_cp15(target, address, value)) != ERROR_OK)\r
 343                         {\r
 344                                 command_print(cmd_ctx, "couldn't access reg %i", address);\r
 345                                 return ERROR_OK;\r
 346                         }\r
 347                         command_print(cmd_ctx, "%i: %8.8x", address, value);\r
 348                 }\r
 349         }\r
 350 \r
 351         return ERROR_OK;\r
 352 }\r
 353 \r
 354 int arm966e_register_commands(struct command_context_s *cmd_ctx)\r
 355 {\r
 356         int retval;\r
 357         command_t *arm966e_cmd;\r
 358         \r
 359         retval = arm9tdmi_register_commands(cmd_ctx);\r
 360         arm966e_cmd = register_command(cmd_ctx, NULL, "arm966e", NULL, COMMAND_ANY, "arm966e specific commands");\r
 361         register_command(cmd_ctx, arm966e_cmd, "cp15", arm966e_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <num> [value]");\r
 362         \r
 363         return ERROR_OK;\r
 364 }\r