comments and debug code
[fw/openocd] / src / target / target.c
index 96a414da10eae63ba9bd0603de8c3a8f54f97333..0b058aeb01062e106bab0d983e6ebd71c51824c3 100644 (file)
@@ -61,7 +61,6 @@
 
 int cli_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv);
 
-
 int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 
 int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
@@ -77,12 +76,16 @@ int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args,
 int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int handle_test_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_rbp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_wp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_rwp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc);
 int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int handle_fast_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int handle_fast_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
 static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 static int jim_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 static int jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv);
@@ -90,8 +93,6 @@ static int jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_Obj *const *argv);
 static int target_mem2array(Jim_Interp *interp, target_t *target, int argc, Jim_Obj *const *argv);
 
-
-
 /* targets */
 extern target_type_t arm7tdmi_target;
 extern target_type_t arm720t_target;
@@ -104,6 +105,7 @@ extern target_type_t xscale_target;
 extern target_type_t cortexm3_target;
 extern target_type_t arm11_target;
 extern target_type_t mips_m4k_target;
+extern target_type_t avr_target;
 
 target_type_t *target_types[] =
 {
@@ -118,6 +120,7 @@ target_type_t *target_types[] =
        &cortexm3_target,
        &arm11_target,
        &mips_m4k_target,
+       &avr_target,
        NULL,
 };
 
@@ -166,18 +169,15 @@ const Jim_Nvp nvp_target_event[] = {
        { .value = TARGET_EVENT_OLD_gdb_program_config , .name = "old-gdb_program_config" },
        { .value = TARGET_EVENT_OLD_pre_resume         , .name = "old-pre_resume" },
 
-
        { .value = TARGET_EVENT_EARLY_HALTED, .name = "early-halted" },
        { .value = TARGET_EVENT_HALTED, .name = "halted" },
        { .value = TARGET_EVENT_RESUMED, .name = "resumed" },
        { .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
        { .value = TARGET_EVENT_RESUME_END, .name = "resume-end" },
 
-
        { .name = "gdb-start", .value = TARGET_EVENT_GDB_START },
        { .name = "gdb-end", .value = TARGET_EVENT_GDB_END },
 
-
        /* historical name */
 
        { .value = TARGET_EVENT_RESET_START, .name = "reset-start" },
@@ -193,13 +193,8 @@ const Jim_Nvp nvp_target_event[] = {
        { .value = TARGET_EVENT_RESET_INIT , .name = "reset-init" },
        { .value = TARGET_EVENT_RESET_END, .name = "reset-end" },
 
-
-
-
-
        { .value = TARGET_EVENT_EXAMINE_START, .name = "examine-start" },
-       { .value = TARGET_EVENT_EXAMINE_START, .name = "examine-end" },
-
+       { .value = TARGET_EVENT_EXAMINE_END, .name = "examine-end" },
 
        { .value = TARGET_EVENT_DEBUG_HALTED, .name = "debug-halted" },
        { .value = TARGET_EVENT_DEBUG_RESUMED, .name = "debug-resumed" },
@@ -207,7 +202,6 @@ const Jim_Nvp nvp_target_event[] = {
        { .value = TARGET_EVENT_GDB_ATTACH, .name = "gdb-attach" },
        { .value = TARGET_EVENT_GDB_DETACH, .name = "gdb-detach" },
 
-
        { .value = TARGET_EVENT_GDB_FLASH_WRITE_START, .name = "gdb-flash-write-start" },
        { .value = TARGET_EVENT_GDB_FLASH_WRITE_END  , .name = "gdb-flash-write-end"   },
 
@@ -230,7 +224,6 @@ const Jim_Nvp nvp_target_state[] = {
        { .name = NULL, .value = -1 },
 };
 
-
 const Jim_Nvp nvp_target_debug_reason [] = {
        { .name = "debug-request"            , .value = DBG_REASON_DBGRQ },
        { .name = "breakpoint"               , .value = DBG_REASON_BREAKPOINT },
@@ -242,12 +235,11 @@ const Jim_Nvp nvp_target_debug_reason [] = {
        { .name = NULL, .value = -1 },
 };
 
-
 const Jim_Nvp nvp_target_endian[] = {
        { .name = "big",    .value = TARGET_BIG_ENDIAN },
        { .name = "little", .value = TARGET_LITTLE_ENDIAN },
        { .name = "be",     .value = TARGET_BIG_ENDIAN },
-        { .name = "le",     .value = TARGET_LITTLE_ENDIAN },
+       { .name = "le",     .value = TARGET_LITTLE_ENDIAN },
        { .name = NULL,     .value = -1 },
 };
 
@@ -259,8 +251,7 @@ const Jim_Nvp nvp_reset_modes[] = {
        { .name = NULL     , .value = -1 },
 };
 
-static int
-max_target_number( void )
+static int max_target_number(void)
 {
        target_t *t;
        int x;
@@ -277,8 +268,7 @@ max_target_number( void )
 }
 
 /* determine the number of the new target */
-static int
-new_target_number( void )
+static int new_target_number(void)
 {
        target_t *t;
        int x;
@@ -378,7 +368,6 @@ target_t* get_current_target(command_context_t *cmd_ctx)
        return target;
 }
 
-
 int target_poll(struct target_s *target)
 {
        /* We can't poll until after examine */
@@ -422,7 +411,6 @@ int target_resume(struct target_s *target, int current, u32 address, int handle_
        return retval;
 }
 
-
 int target_process_reset(struct command_context_s *cmd_ctx, enum target_reset_mode reset_mode)
 {
        char buf[100];
@@ -448,7 +436,6 @@ int target_process_reset(struct command_context_s *cmd_ctx, enum target_reset_mo
        return retval;
 }
 
-
 static int default_virt2phys(struct target_s *target, u32 virtual, u32 *physical)
 {
        *physical = virtual;
@@ -467,7 +454,6 @@ static int default_examine(struct target_s *target)
        return ERROR_OK;
 }
 
-
 /* Targets that correctly implement init+examine, i.e.
  * no communication with target during init:
  *
@@ -563,7 +549,6 @@ int target_init(struct command_context_s *cmd_ctx)
                target->type->run_algorithm_imp = target->type->run_algorithm;
                target->type->run_algorithm = target_run_algorithm_imp;
 
-
                if (target->type->mmu == NULL)
                {
                        target->type->mmu = default_mmu;
@@ -709,7 +694,6 @@ int target_call_event_callbacks(target_t *target, enum target_event event)
                target_call_event_callbacks(target, TARGET_EVENT_EARLY_HALTED);
        }
 
-
        LOG_DEBUG("target event %i (%s)",
                          event,
                          Jim_Nvp_value2name_simple( nvp_target_event, event )->name );
@@ -945,15 +929,12 @@ int target_register_commands(struct command_context_s *cmd_ctx)
 {
 
        register_command(cmd_ctx, NULL, "targets", handle_targets_command, COMMAND_EXEC, "change the current command line target (one parameter) or lists targets (with no parameter)");
-       register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "translate a virtual address into a physical address");
-       register_command(cmd_ctx, NULL, "profile", handle_profile_command, COMMAND_EXEC, "profiling samples the CPU PC");
 
-       register_jim(cmd_ctx, "target", jim_target, "configure target" );
 
 
-       /* script procedures */
-       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");
+
+       register_jim(cmd_ctx, "target", jim_target, "configure target" );
+
        return ERROR_OK;
 }
 
@@ -1006,7 +987,7 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
        /* handle unaligned head bytes */
        if (address % 4)
        {
-               int unaligned = 4 - (address % 4);
+               u32 unaligned = 4 - (address % 4);
 
                if (unaligned > size)
                        unaligned = size;
@@ -1051,7 +1032,6 @@ int target_write_buffer(struct target_s *target, u32 address, u32 size, u8 *buff
        return ERROR_OK;
 }
 
-
 /* Single aligned words are guaranteed to use 16 or 32 bit access
  * mode respectively, otherwise data is handled as quickly as
  * possible
@@ -1082,7 +1062,7 @@ int target_read_buffer(struct target_s *target, u32 address, u32 size, u8 *buffe
        /* handle unaligned head bytes */
        if (address % 4)
        {
-               int unaligned = 4 - (address % 4);
+               u32 unaligned = 4 - (address % 4);
 
                if (unaligned > size)
                        unaligned = size;
@@ -1122,7 +1102,7 @@ int target_checksum_memory(struct target_s *target, u32 address, u32 size, u32*
 {
        u8 *buffer;
        int retval;
-       int i;
+       u32 i;
        u32 checksum = 0;
        if (!target->type->examined)
        {
@@ -1316,6 +1296,21 @@ int target_write_u8(struct target_s *target, u32 address, u8 value)
 int target_register_user_commands(struct command_context_s *cmd_ctx)
 {
        int retval = ERROR_OK;
+
+
+       /* script procedures */
+       register_command(cmd_ctx, NULL, "profile", handle_profile_command, COMMAND_EXEC, "profiling samples the CPU PC");
+       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");
+
+       register_command(cmd_ctx, NULL, "fast_load_image", handle_fast_load_image_command, COMMAND_ANY,
+                       "same args as load_image, image stored in memory - mainly for profiling purposes");
+
+       register_command(cmd_ctx, NULL, "fast_load", handle_fast_load_command, COMMAND_ANY,
+                       "loads active fast load image to current target - mainly for profiling purposes");
+
+
+       register_command(cmd_ctx, NULL, "virt2phys", handle_virt2phys_command, COMMAND_ANY, "translate a virtual address into a physical address");
        register_command(cmd_ctx,  NULL, "reg", handle_reg_command, COMMAND_EXEC, "display or set a register");
        register_command(cmd_ctx,  NULL, "poll", handle_poll_command, COMMAND_EXEC, "poll target state");
        register_command(cmd_ctx,  NULL, "wait_halt", handle_wait_halt_command, COMMAND_EXEC, "wait for target halt [time (s)]");
@@ -1341,13 +1336,13 @@ int target_register_user_commands(struct command_context_s *cmd_ctx)
        register_command(cmd_ctx,  NULL, "load_image", handle_load_image_command, COMMAND_EXEC, "load_image <file> <address> ['bin'|'ihex'|'elf'|'s19'] [min_address] [max_length]");
        register_command(cmd_ctx,  NULL, "dump_image", handle_dump_image_command, COMMAND_EXEC, "dump_image <file> <address> <size>");
        register_command(cmd_ctx,  NULL, "verify_image", handle_verify_image_command, COMMAND_EXEC, "verify_image <file> [offset] [type]");
+       register_command(cmd_ctx,  NULL, "test_image", handle_test_image_command, COMMAND_EXEC, "test_image <file> [offset] [type]");
 
        if((retval = target_request_register_commands(cmd_ctx)) != ERROR_OK)
                return retval;
        if((retval = trace_register_commands(cmd_ctx)) != ERROR_OK)
                return retval;
 
-
        return retval;
 }
 
@@ -1388,17 +1383,18 @@ int handle_targets_command(struct command_context_s *cmd_ctx, char *cmd, char **
 DumpTargets:
 
        target = all_targets;
-       command_print(cmd_ctx, "    CmdName    Type       Endian     ChainPos State     ");
-       command_print(cmd_ctx, "--  ---------- ---------- ---------- -------- ----------");
+       command_print(cmd_ctx, "    CmdName    Type       Endian     AbsChainPos Name          State     ");
+       command_print(cmd_ctx, "--  ---------- ---------- ---------- ----------- ------------- ----------");
        while (target)
        {
                /* XX: abcdefghij abcdefghij abcdefghij abcdefghij */
-               command_print(cmd_ctx, "%2d: %-10s %-10s %-10s %8d %s",
+               command_print(cmd_ctx, "%2d: %-10s %-10s %-10s %10d %14s %s",
                                          target->target_number,
                                          target->cmd_name,
                                          target->type->name,
                                          Jim_Nvp_value2name_simple( nvp_target_endian, target->endianness )->name,
-                                         target->chain_position,
+                                         target->tap->abs_chain_position,
+                                         target->tap->dotted_name,
                                          Jim_Nvp_value2name_simple( nvp_target_state, target->state )->name );
                target = target->next;
        }
@@ -1406,8 +1402,7 @@ DumpTargets:
        return ERROR_OK;
 }
 
-// every 300ms we check for reset & powerdropout and issue a "reset halt" if
-// so.
+/* every 300ms we check for reset & powerdropout and issue a "reset halt" if so. */
 
 static int powerDropout;
 static int srstAsserted;
@@ -1417,7 +1412,7 @@ static int runPowerDropout;
 static int runSrstAsserted;
 static int runSrstDeasserted;
 
-static int sense_handler()
+static int sense_handler(void)
 {
        static int prevSrstAsserted = 0;
        static int prevPowerdropout = 0;
@@ -1475,7 +1470,6 @@ static int sense_handler()
        return ERROR_OK;
 }
 
-
 /* process target state changes */
 int handle_target(void *priv)
 {
@@ -1545,7 +1539,6 @@ int handle_target(void *priv)
                target = target->next;
        }
 
-
        return retval;
 }
 
@@ -1660,7 +1653,6 @@ int handle_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args
        return ERROR_OK;
 }
 
-
 int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 {
        int retval = ERROR_OK;
@@ -1693,7 +1685,6 @@ int handle_poll_command(struct command_context_s *cmd_ctx, char *cmd, char **arg
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
-
        return retval;
 }
 
@@ -1717,35 +1708,44 @@ int handle_wait_halt_command(struct command_context_s *cmd_ctx, char *cmd, char
        return target_wait_state(target, TARGET_HALTED, ms);
 }
 
+/* wait for target state to change. The trick here is to have a low
+ * latency for short waits and not to suck up all the CPU time
+ * on longer waits.
+ *
+ * After 500ms, keep_alive() is invoked
+ */
 int target_wait_state(target_t *target, enum target_state state, int ms)
 {
        int retval;
-       struct timeval timeout, now;
+       long long then=0, cur;
        int once=1;
-       gettimeofday(&timeout, NULL);
-       timeval_add_time(&timeout, 0, ms * 1000);
 
        for (;;)
        {
                if ((retval=target_poll(target))!=ERROR_OK)
                        return retval;
-               keep_alive();
                if (target->state == state)
                {
                        break;
                }
+               cur = timeval_ms();
                if (once)
                {
                        once=0;
+                       then = timeval_ms();
                        LOG_DEBUG("waiting for target %s...",
-                             Jim_Nvp_value2name_simple(nvp_target_state,state)->name);
+                               Jim_Nvp_value2name_simple(nvp_target_state,state)->name);
                }
 
-               gettimeofday(&now, NULL);
-               if ((now.tv_sec > timeout.tv_sec) || ((now.tv_sec == timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec)))
+               if (cur-then>500)
+               {
+                       keep_alive();
+               }
+
+               if ((cur-then)>ms)
                {
                        LOG_ERROR("timed out while waiting for target %s",
-                             Jim_Nvp_value2name_simple(nvp_target_state,state)->name);
+                               Jim_Nvp_value2name_simple(nvp_target_state,state)->name);
                        return ERROR_FAIL;
                }
        }
@@ -1765,6 +1765,16 @@ int handle_halt_command(struct command_context_s *cmd_ctx, char *cmd, char **arg
                return retval;
        }
 
+       if (argc == 1)
+       {
+               int wait;
+               char *end;
+
+               wait = strtoul(args[0], &end, 0);
+               if (!*end && !wait)
+                       return ERROR_OK;
+       }
+
        return handle_wait_halt_command(cmd_ctx, cmd, args, argc);
 }
 
@@ -1857,7 +1867,6 @@ int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args,
 
        address = strtoul(args[0], NULL, 0);
 
-
        switch (cmd[2])
        {
                case 'w':
@@ -2024,7 +2033,6 @@ int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
-
        duration_start_measure(&duration);
 
        if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
@@ -2052,7 +2060,6 @@ int handle_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char
                u32 offset=0;
                u32 length=buf_cnt;
 
-
                /* DANGER!!! beware of unsigned comparision here!!! */
 
                if ((image.sections[i].base_address+buf_cnt>=min_address)&&
@@ -2172,7 +2179,7 @@ int handle_dump_image_command(struct command_context_s *cmd_ctx, char *cmd, char
        return ERROR_OK;
 }
 
-int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+int handle_verify_image_command_internal(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, int verify)
 {
        u8 *buffer;
        u32 buf_cnt;
@@ -2236,55 +2243,61 @@ int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, ch
                        break;
                }
 
-               /* calculate checksum of image */
-               image_calculate_checksum( buffer, buf_cnt, &checksum );
-
-               retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
-               if( retval != ERROR_OK )
+               if (verify)
                {
-                       free(buffer);
-                       break;
-               }
-
-               if( checksum != mem_checksum )
-               {
-                       /* failed crc checksum, fall back to a binary compare */
-                       u8 *data;
-
-                       command_print(cmd_ctx, "checksum mismatch - attempting binary compare");
-
-                       data = (u8*)malloc(buf_cnt);
+                       /* calculate checksum of image */
+                       image_calculate_checksum( buffer, buf_cnt, &checksum );
 
-                       /* Can we use 32bit word accesses? */
-                       int size = 1;
-                       int count = buf_cnt;
-                       if ((count % 4) == 0)
+                       retval = target_checksum_memory(target, image.sections[i].base_address, buf_cnt, &mem_checksum);
+                       if( retval != ERROR_OK )
                        {
-                               size *= 4;
-                               count /= 4;
+                               free(buffer);
+                               break;
                        }
-                       retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
-                       if (retval == ERROR_OK)
+
+                       if( checksum != mem_checksum )
                        {
-                               int t;
-                               for (t = 0; t < buf_cnt; t++)
+                               /* failed crc checksum, fall back to a binary compare */
+                               u8 *data;
+
+                               command_print(cmd_ctx, "checksum mismatch - attempting binary compare");
+
+                               data = (u8*)malloc(buf_cnt);
+
+                               /* Can we use 32bit word accesses? */
+                               int size = 1;
+                               int count = buf_cnt;
+                               if ((count % 4) == 0)
                                {
-                                       if (data[t] != buffer[t])
-                                       {
-                                               command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
-                                               free(data);
-                                               free(buffer);
-                                               retval=ERROR_FAIL;
-                                               goto done;
-                                       }
-                                       if ((t%16384)==0)
+                                       size *= 4;
+                                       count /= 4;
+                               }
+                               retval = target->type->read_memory(target, image.sections[i].base_address, size, count, data);
+                               if (retval == ERROR_OK)
+                               {
+                                       u32 t;
+                                       for (t = 0; t < buf_cnt; t++)
                                        {
-                                               keep_alive();
+                                               if (data[t] != buffer[t])
+                                               {
+                                                       command_print(cmd_ctx, "Verify operation failed address 0x%08x. Was 0x%02x instead of 0x%02x\n", t + image.sections[i].base_address, data[t], buffer[t]);
+                                                       free(data);
+                                                       free(buffer);
+                                                       retval=ERROR_FAIL;
+                                                       goto done;
+                                               }
+                                               if ((t%16384)==0)
+                                               {
+                                                       keep_alive();
+                                               }
                                        }
                                }
-                       }
 
-                       free(data);
+                               free(data);
+                       }
+               } else
+               {
+                       command_print(cmd_ctx, "address 0x%08x length 0x%08x", image.sections[i].base_address, buf_cnt);
                }
 
                free(buffer);
@@ -2309,6 +2322,16 @@ done:
        return retval;
 }
 
+int handle_verify_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+       return handle_verify_image_command_internal(cmd_ctx, cmd, args, argc, 1);
+}
+
+int handle_test_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+       return handle_verify_image_command_internal(cmd_ctx, cmd, args, argc, 0);
+}
+
 int handle_bp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 {
        int retval;
@@ -2469,39 +2492,47 @@ int handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args,
        }
        return retval;
 }
+
+static void writeData(FILE *f, const void *data, size_t len)
+{
+       size_t written = fwrite(data, len, 1, f);
+       if (written != len)
+               LOG_ERROR("failed to write %zu bytes: %s", len, strerror(errno));
+}
+
 static void writeLong(FILE *f, int l)
 {
        int i;
        for (i=0; i<4; i++)
        {
                char c=(l>>(i*8))&0xff;
-               fwrite(&c, 1, 1, f);
+               writeData(f, &c, 1);
        }
 
 }
+
 static void writeString(FILE *f, char *s)
 {
-       fwrite(s, 1, strlen(s), f);
+       writeData(f, s, strlen(s));
 }
 
-
-
-// Dump a gmon.out histogram file.
-static void writeGmon(u32 *samples, int sampleNum, char *filename)
+/* Dump a gmon.out histogram file. */
+static void writeGmon(u32 *samples, u32 sampleNum, char *filename)
 {
-       int i;
+       u32 i;
        FILE *f=fopen(filename, "w");
        if (f==NULL)
                return;
-       fwrite("gmon", 1, 4, f);
-       writeLong(f, 0x00000001); // Version
-       writeLong(f, 0); // padding
-       writeLong(f, 0); // padding
-       writeLong(f, 0); // padding
+       writeString(f, "gmon");
+       writeLong(f, 0x00000001); /* Version */
+       writeLong(f, 0); /* padding */
+       writeLong(f, 0); /* padding */
+       writeLong(f, 0); /* padding */
 
-       fwrite("", 1, 1, f);  // GMON_TAG_TIME_HIST
+       u8 zero = 0;  /* GMON_TAG_TIME_HIST */
+       writeData(f, &zero, 1);
 
-       // figure out bucket size
+       /* figure out bucket size */
        u32 min=samples[0];
        u32 max=samples[0];
        for (i=0; i<sampleNum; i++)
@@ -2518,8 +2549,8 @@ static void writeGmon(u32 *samples, int sampleNum, char *filename)
 
        int addressSpace=(max-min+1);
 
-       static int const maxBuckets=256*1024; // maximum buckets.
-       int length=addressSpace;
+       static const u32 maxBuckets = 256 * 1024; /* maximum buckets. */
+       u32 length = addressSpace;
        if (length > maxBuckets)
        {
                length=maxBuckets;
@@ -2537,23 +2568,21 @@ static void writeGmon(u32 *samples, int sampleNum, char *filename)
                long long a=address-min;
                long long b=length-1;
                long long c=addressSpace-1;
-               int index=(a*b)/c; // danger!!!! int32 overflows
+               int index=(a*b)/c; /* danger!!!! int32 overflows */
                buckets[index]++;
        }
 
-       //                         append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr))
-       writeLong(f, min);                                      // low_pc
-       writeLong(f, max);              // high_pc
-       writeLong(f, length);           // # of samples
-       writeLong(f, 64000000);                         // 64MHz
+       /* append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr)) */
+       writeLong(f, min);                      /* low_pc */
+       writeLong(f, max);                      /* high_pc */
+       writeLong(f, length);           /* # of samples */
+       writeLong(f, 64000000);         /* 64MHz */
        writeString(f, "seconds");
        for (i=0; i<(15-strlen("seconds")); i++)
-       {
-               fwrite("", 1, 1, f);  // padding
-       }
+               writeData(f, &zero, 1);
        writeString(f, "s");
 
-//                        append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size)
+       /*append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size) */
 
        char *data=malloc(2*length);
        if (data!=NULL)
@@ -2570,7 +2599,7 @@ static void writeGmon(u32 *samples, int sampleNum, char *filename)
                        data[i*2+1]=(val>>8)&0xff;
                }
                free(buckets);
-               fwrite(data, 1, length*2, f);
+               writeData(f, data, length * 2);
                free(data);
        } else
        {
@@ -2607,7 +2636,7 @@ int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **
 
        int numSamples=0;
        int retval=ERROR_OK;
-       // hopefully it is safe to cache! We want to stop/restart as quickly as possible.
+       /* hopefully it is safe to cache! We want to stop/restart as quickly as possible. */
        reg_t *reg = register_get_by_name(target->reg_cache, "pc", 1);
 
        for (;;)
@@ -2619,10 +2648,10 @@ int handle_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **
                        samples[numSamples++]=t;
                        retval = target_resume(target, 1, 0, 0, 0); /* current pc, addr = 0, do not handle breakpoints, not debugging */
                        target_poll(target);
-                       alive_sleep(10); // sleep 10ms, i.e. <100 samples/second.
+                       alive_sleep(10); /* sleep 10ms, i.e. <100 samples/second. */
                } else if (target->state == TARGET_RUNNING)
                {
-                       // We want to quickly sample the PC.
+                       /* We want to quickly sample the PC. */
                        if((retval = target_halt(target)) != ERROR_OK)
                        {
                                free(samples);
@@ -2726,7 +2755,8 @@ static int target_mem2array(Jim_Interp *interp, target_t *target, int argc, Jim_
        u32 v;
        const char *varname;
        u8 buffer[4096];
-       int  i, n, e, retval;
+       int  n, e, retval;
+       u32 i;
 
        /* argv[1] = name of array to receive the data
         * argv[2] = desired width
@@ -2897,7 +2927,6 @@ static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
        return target_array2mem( interp,target, argc, argv );
 }
 
-
 static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_Obj *const *argv)
 {
        long l;
@@ -2908,7 +2937,8 @@ static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_
        u32 v;
        const char *varname;
        u8 buffer[4096];
-       int  i, n, e, retval;
+       int  n, e, retval;
+       u32 i;
 
        /* argv[1] = name of array to get the data
         * argv[2] = desired width
@@ -2982,7 +3012,6 @@ static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_
                return JIM_ERR;
        }
 
-
        /* Transfer loop */
 
        /* index counter */
@@ -3030,15 +3059,13 @@ static int target_array2mem(Jim_Interp *interp, target_t *target, int argc, Jim_
        return JIM_OK;
 }
 
-void
-target_all_handle_event( enum target_event e )
+void target_all_handle_event( enum target_event e )
 {
        target_t *target;
 
-
        LOG_DEBUG( "**all*targets: event: %d, %s",
-                  e,
-                  Jim_Nvp_value2name_simple( nvp_target_event, e )->name );
+                       e,
+                       Jim_Nvp_value2name_simple( nvp_target_event, e )->name );
 
        target = all_targets;
        while (target){
@@ -3047,8 +3074,7 @@ target_all_handle_event( enum target_event e )
        }
 }
 
-void
-target_handle_event( target_t *target, enum target_event e )
+void target_handle_event( target_t *target, enum target_event e )
 {
        target_event_action_t *teap;
        int done;
@@ -3092,7 +3118,6 @@ enum target_cfg_param {
        TCFG_CHAIN_POSITION,
 };
 
-
 static Jim_Nvp nvp_config_opts[] = {
        { .name = "-type",             .value = TCFG_TYPE },
        { .name = "-event",            .value = TCFG_EVENT },
@@ -3107,10 +3132,7 @@ static Jim_Nvp nvp_config_opts[] = {
        { .name = NULL, .value = -1 }
 };
 
-
-static int
-target_configure( Jim_GetOptInfo *goi,
-                                 target_t *target )
+static int target_configure( Jim_GetOptInfo *goi, target_t *target )
 {
        Jim_Nvp *n;
        Jim_Obj *o;
@@ -3118,11 +3140,10 @@ target_configure( Jim_GetOptInfo *goi,
        char *cp;
        int e;
 
-
        /* parse config or cget options ... */
        while( goi->argc > 0 ){
                Jim_SetEmptyResult( goi->interp );
-               //Jim_GetOpt_Debug( goi );
+               /* Jim_GetOpt_Debug( goi ); */
 
                if( target->type->target_jim_configure ){
                        /* target defines a configure function */
@@ -3183,14 +3204,13 @@ target_configure( Jim_GetOptInfo *goi,
                                }
                        }
 
-
                        {
                                target_event_action_t *teap;
 
                                teap = target->event_action;
                                /* replace existing? */
                                while( teap ){
-                                       if( teap->event == n->value ){
+                                       if( teap->event == (enum target_event)n->value ){
                                                break;
                                        }
                                        teap = teap->next;
@@ -3349,36 +3369,37 @@ target_configure( Jim_GetOptInfo *goi,
                        break;
                case TCFG_CHAIN_POSITION:
                        if( goi->isconfigure ){
+                               Jim_Obj *o;
+                               jtag_tap_t *tap;
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Wide( goi, &w );
+                               e = Jim_GetOpt_Obj( goi, &o );
                                if( e != JIM_OK ){
                                        return e;
                                }
-                               if (jtag_get_device(w)==NULL)
+                               tap = jtag_TapByJimObj( goi->interp, o );
+                               if( tap == NULL ){
                                        return JIM_ERR;
-
+                               }
                                /* make this exactly 1 or 0 */
-                               target->chain_position = w;
+                               target->tap = tap;
                        } else {
                                if( goi->argc != 0 ){
                                        goto no_params;
                                }
                        }
-                       Jim_SetResult( interp, Jim_NewIntObj( goi->interp, target->chain_position ) );
+                       Jim_SetResultString( interp, target->tap->dotted_name, -1 );
                        /* loop for more e*/
                        break;
                }
        } /* while( goi->argc ) */
+
+
                /* done - we return */
        return JIM_OK;
 }
 
-
 /** this is the 'tcl' handler for the target specific command */
-static int
-tcl_target_func( Jim_Interp *interp,
-                                int argc,
-                                Jim_Obj *const *argv )
+static int tcl_target_func( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
 {
        Jim_GetOptInfo goi;
        jim_wide a,b,c;
@@ -3389,7 +3410,6 @@ tcl_target_func( Jim_Interp *interp,
        struct command_context_s *cmd_ctx;
        int e;
 
-
        enum {
                TS_CMD_CONFIGURE,
                TS_CMD_CGET,
@@ -3432,7 +3452,6 @@ tcl_target_func( Jim_Interp *interp,
                { .name = NULL, .value = -1 },
        };
 
-
        /* go past the "command" */
        Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
 
@@ -3445,7 +3464,7 @@ tcl_target_func( Jim_Interp *interp,
                Jim_GetOpt_NvpUnknown( &goi, target_options, 0 );
                return e;
        }
-       // Assume blank result
+       /* Assume blank result */
        Jim_SetEmptyResult( goi.interp );
 
        switch( n->value ){
@@ -3676,17 +3695,17 @@ tcl_target_func( Jim_Interp *interp,
                        Jim_GetOpt_NvpUnknown( &goi, nvp_assert, 1 );
                        return e;
                }
-               // the halt or not param
+               /* the halt or not param */
                e = Jim_GetOpt_Wide( &goi, &a);
                if( e != JIM_OK ){
                        return e;
                }
-               // determine if we should halt or not.
+               /* determine if we should halt or not. */
                target->reset_halt = !!a;
-               // When this happens - all workareas are invalid.
+               /* When this happens - all workareas are invalid. */
                target_free_all_working_areas_restore(target, 0);
 
-               // do the assert
+               /* do the assert */
                if( n->value == NVP_ASSERT ){
                        target->type->assert_reset( target );
                } else {
@@ -3701,7 +3720,7 @@ tcl_target_func( Jim_Interp *interp,
                target->type->halt( target );
                return JIM_OK;
        case TS_CMD_WAITSTATE:
-               // params:  <name>  statename timeoutmsecs
+               /* params:  <name>  statename timeoutmsecs */
                if( goi.argc != 2 ){
                        Jim_SetResult_sprintf( goi.interp, "%s STATENAME TIMEOUTMSECS", n->name );
                        return JIM_ERR;
@@ -3721,7 +3740,7 @@ tcl_target_func( Jim_Interp *interp,
                                                                   "target: %s wait %s fails (%d) %s",
                                                                   target->cmd_name,
                                                                   n->name,
-                                              e, target_strerror_safe(e) );
+                                                                  e, target_strerror_safe(e) );
                        return JIM_ERR;
                } else {
                        return JIM_OK;
@@ -3772,11 +3791,8 @@ tcl_target_func( Jim_Interp *interp,
        return JIM_ERR;
 }
 
-
-static int
-target_create( Jim_GetOptInfo *goi )
+static int target_create( Jim_GetOptInfo *goi )
 {
-
        Jim_Obj *new_cmd;
        Jim_Cmd *cmd;
        const char *cp;
@@ -3830,7 +3846,6 @@ target_create( Jim_GetOptInfo *goi )
                return JIM_ERR;
        }
 
-
        /* Create it */
        target = calloc(1,sizeof(target_t));
        /* set target number */
@@ -3877,6 +3892,13 @@ target_create( Jim_GetOptInfo *goi )
        /* Do the rest as "configure" options */
        goi->isconfigure = 1;
        e = target_configure( goi, target);
+
+       if (target->tap == NULL)
+       {
+               Jim_SetResultString( interp, "-chain-position required when creating target", -1);
+               e=JIM_ERR;
+       }
+
        if( e != JIM_OK ){
                free( target->type );
                free( target );
@@ -3888,6 +3910,10 @@ target_create( Jim_GetOptInfo *goi )
                target->endianness = TARGET_LITTLE_ENDIAN;
        }
 
+       /* incase variant is not set */
+       if (!target->variant)
+               target->variant = strdup("");
+
        /* create the target specific commands */
        if( target->type->register_commands ){
                (*(target->type->register_commands))( cmd_ctx );
@@ -3920,8 +3946,7 @@ target_create( Jim_GetOptInfo *goi )
        return e;
 }
 
-static int
-jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
+static int jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
 {
        int x,r,e;
        jim_wide w;
@@ -3940,11 +3965,11 @@ jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
        const char *target_cmds[] = {
                "create", "types", "names", "current", "number",
                "count",
-               NULL // terminate
+               NULL /* terminate */
        };
 
        LOG_DEBUG("Target command params:");
-       LOG_DEBUG(Jim_Debug_ArgvString( interp, argc, argv) );
+       LOG_DEBUG("%s", Jim_Debug_ArgvString(interp, argc, argv));
 
        cmd_ctx = Jim_GetAssocData( interp, "context" );
 
@@ -3955,7 +3980,7 @@ jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
                return JIM_ERR;
        }
 
-       //Jim_GetOpt_Debug( &goi );
+       /* Jim_GetOpt_Debug( &goi ); */
        r = Jim_GetOpt_Enum( &goi, target_cmds, &x   );
        if( r != JIM_OK ){
                return r;
@@ -4036,3 +4061,197 @@ jim_target( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
 
        return JIM_ERR;
 }
+
+
+struct FastLoad
+{
+       u32 address;
+       u8 *data;
+       int length;
+
+};
+
+static int fastload_num;
+static struct FastLoad *fastload;
+
+static void free_fastload(void)
+{
+       if (fastload!=NULL)
+       {
+               int i;
+               for (i=0; i<fastload_num; i++)
+               {
+                       if (fastload[i].data)
+                               free(fastload[i].data);
+               }
+               free(fastload);
+               fastload=NULL;
+       }
+}
+
+
+
+
+int handle_fast_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+       u8 *buffer;
+       u32 buf_cnt;
+       u32 image_size;
+       u32 min_address=0;
+       u32 max_address=0xffffffff;
+       int i;
+       int retval;
+
+       image_t image;
+
+       duration_t duration;
+       char *duration_text;
+
+       if ((argc < 1)||(argc > 5))
+       {
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       }
+
+       /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
+       if (argc >= 2)
+       {
+               image.base_address_set = 1;
+               image.base_address = strtoul(args[1], NULL, 0);
+       }
+       else
+       {
+               image.base_address_set = 0;
+       }
+
+
+       image.start_address_set = 0;
+
+       if (argc>=4)
+       {
+               min_address=strtoul(args[3], NULL, 0);
+       }
+       if (argc>=5)
+       {
+               max_address=strtoul(args[4], NULL, 0)+min_address;
+       }
+
+       if (min_address>max_address)
+       {
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       }
+
+       duration_start_measure(&duration);
+
+       if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
+       {
+               return ERROR_OK;
+       }
+
+       image_size = 0x0;
+       retval = ERROR_OK;
+       fastload_num=image.num_sections;
+       fastload=(struct FastLoad *)malloc(sizeof(struct FastLoad)*image.num_sections);
+       if (fastload==NULL)
+       {
+               image_close(&image);
+               return ERROR_FAIL;
+       }
+       memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
+       for (i = 0; i < image.num_sections; i++)
+       {
+               buffer = malloc(image.sections[i].size);
+               if (buffer == NULL)
+               {
+                       command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
+                       break;
+               }
+
+               if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
+               {
+                       free(buffer);
+                       break;
+               }
+
+               u32 offset=0;
+               u32 length=buf_cnt;
+
+
+               /* DANGER!!! beware of unsigned comparision here!!! */
+
+               if ((image.sections[i].base_address+buf_cnt>=min_address)&&
+                               (image.sections[i].base_address<max_address))
+               {
+                       if (image.sections[i].base_address<min_address)
+                       {
+                               /* clip addresses below */
+                               offset+=min_address-image.sections[i].base_address;
+                               length-=offset;
+                       }
+
+                       if (image.sections[i].base_address+buf_cnt>max_address)
+                       {
+                               length-=(image.sections[i].base_address+buf_cnt)-max_address;
+                       }
+
+                       fastload[i].address=image.sections[i].base_address+offset;
+                       fastload[i].data=malloc(length);
+                       if (fastload[i].data==NULL)
+                       {
+                               free(buffer);
+                               break;
+                       }
+                       memcpy(fastload[i].data, buffer+offset, length);
+                       fastload[i].length=length;
+
+                       image_size += length;
+                       command_print(cmd_ctx, "%u byte written at address 0x%8.8x", length, image.sections[i].base_address+offset);
+               }
+
+               free(buffer);
+       }
+
+       duration_stop_measure(&duration, &duration_text);
+       if (retval==ERROR_OK)
+       {
+               command_print(cmd_ctx, "Loaded %u bytes in %s", image_size, duration_text);
+               command_print(cmd_ctx, "NB!!! image has not been loaded to target, issue a subsequent 'fast_load' to do so.");
+       }
+       free(duration_text);
+
+       image_close(&image);
+
+       if (retval!=ERROR_OK)
+       {
+               free_fastload();
+       }
+
+       return retval;
+}
+
+int handle_fast_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+       if (argc>0)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       if (fastload==NULL)
+       {
+               LOG_ERROR("No image in memory");
+               return ERROR_FAIL;
+       }
+       int i;
+       int ms=timeval_ms();
+       int size=0;
+       int retval=ERROR_OK;
+       for (i=0; i<fastload_num;i++)
+       {
+               target_t *target = get_current_target(cmd_ctx);
+               command_print(cmd_ctx, "Write to 0x%08x, length 0x%08x", fastload[i].address, fastload[i].length);
+               if (retval==ERROR_OK)
+               {
+                       retval = target_write_buffer(target, fastload[i].address, fastload[i].length, fastload[i].data);
+               }
+               size+=fastload[i].length;
+       }
+       int after=timeval_ms();
+       command_print(cmd_ctx, "Loaded image %f kBytes/s", (float)(size/1024.0)/((float)(after-ms)/1000.0));
+       return retval;
+}