- Improves error handling upon GDB connect

[openocd.git] / src / target / arm7_9_common.c

diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index e31b0151168287e0cd122f804208dfdef2aea395..a7d756a32f962b9061e73cf683a20443654f267b 100644 (file)
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -860,16 +860,26 @@ int arm7_9_soft_reset_halt(struct target_s *target)
        reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
        reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
        int i;
+       int retval;
        
-       if (target->state == TARGET_RUNNING)
-       {
-               target->type->halt(target);
-       }
+       if ((retval=target->type->halt(target))!=ERROR_OK)
+               return retval;
        
-       while (buf_get_u32(dbg_stat->value, EICE_DBG_STATUS_DBGACK, 1) == 0)
+       for (i=0; i<10; i++)
        {
+               if (buf_get_u32(dbg_stat->value, EICE_DBG_STATUS_DBGACK, 1) != 0)
+                       break;
                embeddedice_read_reg(dbg_stat);
-               jtag_execute_queue();
+               if ((retval=jtag_execute_queue())!=ERROR_OK)
+                       return retval;
+               /* do not eat all CPU, time out after 1 se*/
+               usleep(100*1000);
+               
+       }
+       if (i==10)
+       {
+               ERROR("Failed to halt CPU after 1 sec");
+               return ERROR_TARGET_TIMEOUT;
        }
        target->state = TARGET_HALTED;
        
@@ -962,7 +972,7 @@ int arm7_9_halt(target_t *target)
        if (target->state == TARGET_HALTED)
        {
                WARNING("target was already halted");
-               return ERROR_TARGET_ALREADY_HALTED;
+               return ERROR_OK;
        }
        
        if (target->state == TARGET_UNKNOWN)