wait 500ms for target to halt upon connect.
[openocd.git] / src / target / target.c
index 589f626f0902f61a6f551cca298eeada31614b03..e1341a0a3e8ae42bb0ca2dfec515742a8bb5e3fe 100644 (file)
@@ -274,20 +274,22 @@ int target_resume(struct target_s *target, int current, u32 address, int handle_
                return ERROR_FAIL;
        }
        
+       /* note that resume *must* be asynchronous. The CPU can halt before we poll. The CPU can
+        * even halt at the current PC as a result of a software breakpoint being inserted by (a bug?)
+        * the application.
+        */
        if ((retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution)) != ERROR_OK)
                return retval;
        
        return retval;
 }
 
-int target_process_reset(struct command_context_s *cmd_ctx)
+int target_process_reset(struct command_context_s *cmd_ctx, enum target_reset_mode reset_mode)
 {
        int retval = ERROR_OK;
        target_t *target;
        struct timeval timeout, now;
 
-       jtag->speed(jtag_speed);
-
        target = targets;
        while (target)
        {
@@ -298,6 +300,8 @@ int target_process_reset(struct command_context_s *cmd_ctx)
        if ((retval = jtag_init_reset(cmd_ctx)) != ERROR_OK)
                return retval;
        
+       keep_alive(); /* we might be running on a very slow JTAG clk */
+       
        /* First time this is executed after launching OpenOCD, it will read out 
         * the type of CPU, etc. and init Embedded ICE registers in host
         * memory. 
@@ -311,29 +315,8 @@ int target_process_reset(struct command_context_s *cmd_ctx)
        if ((retval = target_examine(cmd_ctx)) != ERROR_OK)
                return retval;
        
-       /* prepare reset_halt where necessary */
-       target = targets;
-       while (target)
-       {
-               if (jtag_reset_config & RESET_SRST_PULLS_TRST)
-               {
-                       switch (target->reset_mode)
-                       {
-                               case RESET_HALT:
-                                       command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_halt\"");
-                                       target->reset_mode = RESET_RUN_AND_HALT;
-                                       break;
-                               case RESET_INIT:
-                                       command_print(cmd_ctx, "nSRST pulls nTRST, falling back to \"reset run_and_init\"");
-                                       target->reset_mode = RESET_RUN_AND_INIT;
-                                       break;
-                               default:
-                                       break;
-                       } 
-               }
-               target = target->next;
-       }
-       
+       keep_alive(); /* we might be running on a very slow JTAG clk */
+               
        target = targets;
        while (target)
        {
@@ -341,6 +324,7 @@ int target_process_reset(struct command_context_s *cmd_ctx)
                 * have to drop working areas
                 */
                target_free_all_working_areas_restore(target, 0);
+               target->reset_halt=((reset_mode==RESET_HALT)||(reset_mode==RESET_INIT));
                target->type->assert_reset(target);
                target = target->next;
        }
@@ -354,7 +338,7 @@ int target_process_reset(struct command_context_s *cmd_ctx)
        target = targets;
        while (target)
        {
-               switch (target->reset_mode)
+               switch (reset_mode)
                {
                        case RESET_RUN:
                                /* nothing to do if target just wants to be run */
@@ -369,10 +353,12 @@ int target_process_reset(struct command_context_s *cmd_ctx)
                                target_register_event_callback(target_init_handler, cmd_ctx);
                                break;
                        case RESET_HALT:
-                               target_halt(target);
+                               if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
+                                       target_halt(target);
                                break;
                        case RESET_INIT:
-                               target_halt(target);
+                               if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
+                                       target_halt(target);
                                target_register_event_callback(target_init_handler, cmd_ctx);
                                break;
                        default:
@@ -391,6 +377,14 @@ int target_process_reset(struct command_context_s *cmd_ctx)
        while (target)
        {
                target->type->deassert_reset(target);
+               /* We can fail to bring the target into the halted state  */
+               target_poll(target);
+               if (target->reset_halt&&((target->state != TARGET_HALTED)))
+               {
+                       LOG_WARNING("Failed to reset target into halted mode - issuing halt");
+                       target->type->halt(target);
+               }
+               
                target = target->next;
        }
        
@@ -407,8 +401,7 @@ int target_process_reset(struct command_context_s *cmd_ctx)
                        return retval;
        }               
        
-       
-       LOG_DEBUG("Waiting for halted stated as approperiate");
+       LOG_DEBUG("Waiting for halted stated as appropriate");
        
        /* Wait for reset to complete, maximum 5 seconds. */    
        gettimeofday(&timeout, NULL);
@@ -424,10 +417,10 @@ int target_process_reset(struct command_context_s *cmd_ctx)
                {
                        LOG_DEBUG("Polling target");
                        target_poll(target);
-                       if ((target->reset_mode == RESET_RUN_AND_INIT) || 
-                                       (target->reset_mode == RESET_RUN_AND_HALT) ||
-                                       (target->reset_mode == RESET_HALT) ||
-                                       (target->reset_mode == RESET_INIT))
+                       if ((reset_mode == RESET_RUN_AND_INIT) || 
+                                       (reset_mode == RESET_RUN_AND_HALT) ||
+                                       (reset_mode == RESET_HALT) ||
+                                       (reset_mode == RESET_INIT))
                        {
                                if (target->state != TARGET_HALTED)
                                {
@@ -464,8 +457,6 @@ int target_process_reset(struct command_context_s *cmd_ctx)
        }
        target_unregister_event_callback(target_init_handler, cmd_ctx);
        
-       jtag->speed(jtag_speed_post_reset);
-       
        return retval;
 }
 
@@ -738,6 +729,8 @@ static int target_call_timer_callbacks_check_time(int checktime)
        target_timer_callback_t *next_callback;
        struct timeval now;
 
+       keep_alive();
+       
        gettimeofday(&now, NULL);
        
        while (callback)
@@ -941,8 +934,8 @@ int target_register_commands(struct command_context_s *cmd_ctx)
 
 
        /* script procedures */
-       register_jim(cmd_ctx, "openocd_mem2array", jim_mem2array, "read memory and return as a TCL array for script processing");
-       register_jim(cmd_ctx, "openocd_array2mem", jim_mem2array, "convert a TCL array to memory locations and write the values");
+       register_jim(cmd_ctx, "ocd_mem2array", jim_mem2array, "read memory and return as a TCL array for script processing");
+       register_jim(cmd_ctx, "ocd_array2mem", jim_array2mem, "convert a TCL array to memory locations and write the values");
        return ERROR_OK;
 }
 
@@ -1404,18 +1397,31 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
                                        return ERROR_COMMAND_SYNTAX_ERROR;
                                }
                                
-                               /* what to do on a target reset */
-                               (*last_target_p)->reset_mode = RESET_INIT; /* default */
                                if (strcmp(args[2], "reset_halt") == 0)
-                                       (*last_target_p)->reset_mode = RESET_HALT;
+                               {
+                                       LOG_WARNING("reset_mode argument is obsolete.");
+                                       return ERROR_COMMAND_SYNTAX_ERROR;
+                               }
                                else if (strcmp(args[2], "reset_run") == 0)
-                                       (*last_target_p)->reset_mode = RESET_RUN;
+                               {
+                                       LOG_WARNING("reset_mode argument is obsolete.");
+                                       return ERROR_COMMAND_SYNTAX_ERROR;
+                               }
                                else if (strcmp(args[2], "reset_init") == 0)
-                                       (*last_target_p)->reset_mode = RESET_INIT;
+                               {
+                                       LOG_WARNING("reset_mode argument is obsolete.");
+                                       return ERROR_COMMAND_SYNTAX_ERROR;
+                               }
                                else if (strcmp(args[2], "run_and_halt") == 0)
-                                       (*last_target_p)->reset_mode = RESET_RUN_AND_HALT;
+                               {
+                                       LOG_WARNING("reset_mode argument is obsolete.");
+                                       return ERROR_COMMAND_SYNTAX_ERROR;
+                               }
                                else if (strcmp(args[2], "run_and_init") == 0)
-                                       (*last_target_p)->reset_mode = RESET_RUN_AND_INIT;
+                               {
+                                       LOG_WARNING("reset_mode argument is obsolete.");
+                                       return ERROR_COMMAND_SYNTAX_ERROR;
+                               }
                                else
                                {
                                        /* Kludge! we want to make this reset arg optional while remaining compatible! */
@@ -1470,9 +1476,9 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
 
 int target_invoke_script(struct command_context_s *cmd_ctx, target_t *target, char *name)
 {
-       return command_run_linef(cmd_ctx, " if {[catch {info body target_%s_%d} t]==0} {target_%s_%d}", 
-       name, get_num_by_target(target),
-       name, get_num_by_target(target));
+       return command_run_linef(cmd_ctx, " if {[catch {info body target_%d_%s} t]==0} {target_%d_%s}", 
+                       get_num_by_target(target), name, 
+                       get_num_by_target(target), name);
 }
 
 int handle_run_and_halt_time_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
@@ -1677,7 +1683,6 @@ int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args
        return ERROR_OK;
 }
 
-static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms);
 
 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 {
@@ -1723,11 +1728,12 @@ int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char
                        return ERROR_OK;
                }
        }
+       target_t *target = get_current_target(cmd_ctx);
 
-       return wait_state(cmd_ctx, cmd, TARGET_HALTED, ms); 
+       return target_wait_state(target, TARGET_HALTED, ms); 
 }
 
-static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_state state, int ms)
+int target_wait_state(target_t *target, enum target_state state, int ms)
 {
        int retval;
        struct timeval timeout, now;
@@ -1735,7 +1741,6 @@ static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_
        gettimeofday(&timeout, NULL);
        timeval_add_time(&timeout, 0, ms * 1000);
        
-       target_t *target = get_current_target(cmd_ctx);
        for (;;)
        {
                if ((retval=target_poll(target))!=ERROR_OK)
@@ -1748,7 +1753,7 @@ static int wait_state(struct command_context_s *cmd_ctx, char *cmd, enum target_
                if (once)
                {
                        once=0;
-                       command_print(cmd_ctx, "waiting for target %s...", target_state_strings[state]);
+                       LOG_USER("waiting for target %s...", target_state_strings[state]);
                }
                
                gettimeofday(&now, NULL);
@@ -1791,8 +1796,7 @@ int handle_soft_reset_halt_command(struct command_context_s *cmd_ctx, char *cmd,
 int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 {
        target_t *target = get_current_target(cmd_ctx);
-       enum target_reset_mode reset_mode = target->reset_mode;
-       enum target_reset_mode save = target->reset_mode;
+       enum target_reset_mode reset_mode = RESET_RUN;
        
        LOG_DEBUG("-");
        
@@ -1827,14 +1831,8 @@ int handle_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **ar
                }
        }
        
-       /* temporarily modify mode of current reset target */
-       target->reset_mode = reset_mode;
-
        /* reset *all* targets */
-       target_process_reset(cmd_ctx);
-       
-       /* Restore default reset mode for this target */
-    target->reset_mode = save;
+       target_process_reset(cmd_ctx, reset_mode);
        
        return ERROR_OK;
 }

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