src/target/avrt.c

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Simon Qian                                      *
   3  *   SimonQian@SimonQian.com                                               *
   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 "avrt.h"
  25 #include "target.h"
  26 #include "target_type.h"
  27
  28
  29 #define AVR_JTAG_INS_LEN        4
  30
  31 /* forward declarations */
  32 static int avr_target_create(struct target *target, Jim_Interp *interp);
  33 static int avr_init_target(struct command_context *cmd_ctx, struct target *target);
  34
  35 static int avr_arch_state(struct target *target);
  36 static int avr_poll(struct target *target);
  37 static int avr_halt(struct target *target);
  38 static int avr_resume(struct target *target, int current, uint32_t address, int handle_breakpoints, int debug_execution);
  39 static int avr_step(struct target *target, int current, uint32_t address, int handle_breakpoints);
  40
  41 static int avr_assert_reset(struct target *target);
  42 static int avr_deassert_reset(struct target *target);
  43 static int avr_soft_reset_halt(struct target *target);
  44
  45 /* IR and DR functions */
  46 static int mcu_write_ir(struct jtag_tap *tap, uint8_t *ir_in, uint8_t *ir_out, int ir_len, int rti);
  47 static int mcu_write_dr(struct jtag_tap *tap, uint8_t *dr_in, uint8_t *dr_out, int dr_len, int rti);
  48 static int mcu_write_ir_u8(struct jtag_tap *tap, uint8_t *ir_in, uint8_t ir_out, int ir_len, int rti);
  49 int mcu_write_dr_u8(struct jtag_tap *tap, uint8_t *ir_in, uint8_t ir_out, int dr_len, int rti);
  50 int mcu_write_ir_u16(struct jtag_tap *tap, uint16_t *ir_in, uint16_t ir_out, int ir_len, int rti);
  51 int mcu_write_dr_u16(struct jtag_tap *tap, uint16_t *ir_in, uint16_t ir_out, int dr_len, int rti);
  52 int mcu_write_ir_u32(struct jtag_tap *tap, uint32_t *ir_in, uint32_t ir_out, int ir_len, int rti);
  53 static int mcu_write_dr_u32(struct jtag_tap *tap, uint32_t *ir_in, uint32_t ir_out, int dr_len, int rti);
  54
  55 struct target_type avr_target =
  56 {
  57         .name = "avr",
  58
  59         .poll = avr_poll,
  60         .arch_state = avr_arch_state,
  61
  62         .target_request_data = NULL,
  63
  64         .halt = avr_halt,
  65         .resume = avr_resume,
  66         .step = avr_step,
  67
  68         .assert_reset = avr_assert_reset,
  69         .deassert_reset = avr_deassert_reset,
  70         .soft_reset_halt = avr_soft_reset_halt,
  71 /*
  72         .get_gdb_reg_list = avr_get_gdb_reg_list,
  73
  74         .read_memory = avr_read_memory,
  75         .write_memory = avr_write_memory,
  76         .bulk_write_memory = avr_bulk_write_memory,
  77         .checksum_memory = avr_checksum_memory,
  78         .blank_check_memory = avr_blank_check_memory,
  79
  80         .run_algorithm = avr_run_algorithm,
  81
  82         .add_breakpoint = avr_add_breakpoint,
  83         .remove_breakpoint = avr_remove_breakpoint,
  84         .add_watchpoint = avr_add_watchpoint,
  85         .remove_watchpoint = avr_remove_watchpoint,
  86 */
  87         .target_create = avr_target_create,
  88         .init_target = avr_init_target,
  89 };
  90
  91 static int avr_target_create(struct target *target, Jim_Interp *interp)
  92 {
  93         struct avr_common *avr = calloc(1, sizeof(struct avr_common));
  94
  95         avr->jtag_info.tap = target->tap;
  96         target->arch_info = avr;
  97
  98         return ERROR_OK;
  99 }
 100
 101 static int avr_init_target(struct command_context *cmd_ctx, struct target *target)
 102 {
 103         LOG_DEBUG("%s", __FUNCTION__);
 104         return ERROR_OK;
 105 }
 106
 107 static int avr_arch_state(struct target *target)
 108 {
 109         LOG_DEBUG("%s", __FUNCTION__);
 110         return ERROR_OK;
 111 }
 112
 113 static int avr_poll(struct target *target)
 114 {
 115         if ((target->state == TARGET_RUNNING) || (target->state == TARGET_DEBUG_RUNNING))
 116         {
 117                 target->state = TARGET_HALTED;
 118         }
 119
 120         LOG_DEBUG("%s", __FUNCTION__);
 121         return ERROR_OK;
 122 }
 123
 124 static int avr_halt(struct target *target)
 125 {
 126         LOG_DEBUG("%s", __FUNCTION__);
 127         return ERROR_OK;
 128 }
 129
 130 static int avr_resume(struct target *target, int current, uint32_t address,
 131                 int handle_breakpoints, int debug_execution)
 132 {
 133         LOG_DEBUG("%s", __FUNCTION__);
 134         return ERROR_OK;
 135 }
 136
 137 static int avr_step(struct target *target, int current, uint32_t address, int handle_breakpoints)
 138 {
 139         LOG_DEBUG("%s", __FUNCTION__);
 140         return ERROR_OK;
 141 }
 142
 143 static int avr_assert_reset(struct target *target)
 144 {
 145         target->state = TARGET_RESET;
 146
 147         LOG_DEBUG("%s", __FUNCTION__);
 148         return ERROR_OK;
 149 }
 150
 151 static int avr_deassert_reset(struct target *target)
 152 {
 153         target->state = TARGET_RUNNING;
 154
 155         LOG_DEBUG("%s", __FUNCTION__);
 156         return ERROR_OK;
 157 }
 158
 159 static int avr_soft_reset_halt(struct target *target)
 160 {
 161         LOG_DEBUG("%s", __FUNCTION__);
 162         return ERROR_OK;
 163 }
 164
 165 int avr_jtag_senddat(struct jtag_tap *tap, uint32_t* dr_in, uint32_t dr_out,
 166                 int len)
 167 {
 168         return mcu_write_dr_u32(tap, dr_in, dr_out, len, 1);
 169 }
 170
 171 int avr_jtag_sendinstr(struct jtag_tap *tap, uint8_t *ir_in, uint8_t ir_out)
 172 {
 173         return mcu_write_ir_u8(tap, ir_in, ir_out, AVR_JTAG_INS_LEN, 1);
 174 }
 175
 176 /* IR and DR functions */
 177 static int mcu_write_ir(struct jtag_tap *tap, uint8_t *ir_in, uint8_t *ir_out,
 178                 int ir_len, int rti)
 179 {
 180         if (NULL == tap)
 181         {
 182                 LOG_ERROR("invalid tap");
 183                 return ERROR_FAIL;
 184         }
 185         if (ir_len != tap->ir_length)
 186         {
 187                 LOG_ERROR("invalid ir_len");
 188                 return ERROR_FAIL;
 189         }
 190
 191         {
 192                 jtag_add_plain_ir_scan(tap->ir_length, ir_out, ir_in, TAP_IDLE);
 193         }
 194
 195         return ERROR_OK;
 196 }
 197
 198 static int mcu_write_dr(struct jtag_tap *tap, uint8_t *dr_in, uint8_t *dr_out,
 199                 int dr_len, int rti)
 200 {
 201         if (NULL == tap)
 202         {
 203                 LOG_ERROR("invalid tap");
 204                 return ERROR_FAIL;
 205         }
 206
 207         {
 208                 jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
 209         }
 210
 211         return ERROR_OK;
 212 }
 213
 214 static int mcu_write_ir_u8(struct jtag_tap *tap, uint8_t *ir_in,
 215                 uint8_t ir_out, int ir_len, int rti)
 216 {
 217         if (ir_len > 8)
 218         {
 219                 LOG_ERROR("ir_len overflow, maxium is 8");
 220                 return ERROR_FAIL;
 221         }
 222
 223         mcu_write_ir(tap, ir_in, &ir_out, ir_len, rti);
 224
 225         return ERROR_OK;
 226 }
 227
 228 int mcu_write_dr_u8(struct jtag_tap *tap, uint8_t *dr_in, uint8_t dr_out, int dr_len, int rti)
 229 {
 230         if (dr_len > 8)
 231         {
 232                 LOG_ERROR("dr_len overflow, maxium is 8");
 233                 return ERROR_FAIL;
 234         }
 235
 236         mcu_write_dr(tap, dr_in, &dr_out, dr_len, rti);
 237
 238         return ERROR_OK;
 239 }
 240
 241 int mcu_write_ir_u16(struct jtag_tap *tap, uint16_t *ir_in, uint16_t ir_out, int ir_len, int rti)
 242 {
 243         if (ir_len > 16)
 244         {
 245                 LOG_ERROR("ir_len overflow, maxium is 16");
 246                 return ERROR_FAIL;
 247         }
 248
 249         mcu_write_ir(tap, (uint8_t*)ir_in, (uint8_t*)&ir_out, ir_len, rti);
 250
 251         return ERROR_OK;
 252 }
 253
 254 int mcu_write_dr_u16(struct jtag_tap *tap, uint16_t *dr_in, uint16_t dr_out, int dr_len, int rti)
 255 {
 256         if (dr_len > 16)
 257         {
 258                 LOG_ERROR("dr_len overflow, maxium is 16");
 259                 return ERROR_FAIL;
 260         }
 261
 262         mcu_write_dr(tap, (uint8_t*)dr_in, (uint8_t*)&dr_out, dr_len, rti);
 263
 264         return ERROR_OK;
 265 }
 266
 267 int mcu_write_ir_u32(struct jtag_tap *tap, uint32_t *ir_in, uint32_t ir_out, int ir_len, int rti)
 268 {
 269         if (ir_len > 32)
 270         {
 271                 LOG_ERROR("ir_len overflow, maxium is 32");
 272                 return ERROR_FAIL;
 273         }
 274
 275         mcu_write_ir(tap, (uint8_t*)ir_in, (uint8_t*)&ir_out, ir_len, rti);
 276
 277         return ERROR_OK;
 278 }
 279
 280 static int mcu_write_dr_u32(struct jtag_tap *tap, uint32_t *dr_in,
 281                 uint32_t dr_out, int dr_len, int rti)
 282 {
 283         if (dr_len > 32)
 284         {
 285                 LOG_ERROR("dr_len overflow, maxium is 32");
 286                 return ERROR_FAIL;
 287         }
 288
 289         mcu_write_dr(tap, (uint8_t*)dr_in, (uint8_t*)&dr_out, dr_len, rti);
 290
 291         return ERROR_OK;
 292 }
 293
 294 int mcu_execute_queue(void)
 295 {
 296         return jtag_execute_queue();
 297 }