command_handler: change 'cmd_ctx' to CMD_CTX
[fw/openocd] / src / jtag / tcl.c
index 75153636331de5b1fc12c970851a286765a3bf63..96018b590ebb8b795578ff8241e92e3d6158e323 100644 (file)
@@ -2,7 +2,7 @@
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
- *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
  *   oyvind.harboe@zylin.com                                               *
  *                                                                         *
  *   Copyright (C) 2009 SoftPLC Corporation                                *
 #include "jtag.h"
 #include "minidriver.h"
 #include "interface.h"
+#include "interfaces.h"
 
 #ifdef HAVE_STRINGS_H
 #include <strings.h>
 #endif
 
 static const Jim_Nvp nvp_jtag_tap_event[] = {
+       { .value = JTAG_TRST_ASSERTED,          .name = "post-reset" },
+       { .value = JTAG_TAP_EVENT_SETUP,        .name = "setup" },
        { .value = JTAG_TAP_EVENT_ENABLE,       .name = "tap-enable" },
        { .value = JTAG_TAP_EVENT_DISABLE,      .name = "tap-disable" },
 
        { .name = NULL, .value = -1 }
 };
 
-/* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
- */
-
-#if BUILD_ZY1000 == 1
-       extern jtag_interface_t zy1000_interface;
-#elif defined(BUILD_MINIDRIVER_DUMMY)
-       extern jtag_interface_t minidummy_interface;
-#else // standard drivers
-#if BUILD_PARPORT == 1
-       extern jtag_interface_t parport_interface;
-#endif
-
-#if BUILD_DUMMY == 1
-       extern jtag_interface_t dummy_interface;
-#endif
-
-#if BUILD_FT2232_FTD2XX == 1
-       extern jtag_interface_t ft2232_interface;
-#endif
-
-#if BUILD_FT2232_LIBFTDI == 1
-       extern jtag_interface_t ft2232_interface;
-#endif
-
-#if BUILD_AMTJTAGACCEL == 1
-       extern jtag_interface_t amt_jtagaccel_interface;
-#endif
-
-#if BUILD_EP93XX == 1
-       extern jtag_interface_t ep93xx_interface;
-#endif
-
-#if BUILD_AT91RM9200 == 1
-       extern jtag_interface_t at91rm9200_interface;
-#endif
-
-#if BUILD_GW16012 == 1
-       extern jtag_interface_t gw16012_interface;
-#endif
-
-#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
-       extern jtag_interface_t presto_interface;
-#endif
-
-#if BUILD_USBPROG == 1
-       extern jtag_interface_t usbprog_interface;
-#endif
-
-#if BUILD_JLINK == 1
-       extern jtag_interface_t jlink_interface;
-#endif
-
-#if BUILD_VSLLINK == 1
-       extern jtag_interface_t vsllink_interface;
-#endif
-
-#if BUILD_RLINK == 1
-       extern jtag_interface_t rlink_interface;
-#endif
-
-#if BUILD_ARMJTAGEW == 1
-       extern jtag_interface_t armjtagew_interface;
-#endif
-#endif // standard drivers
-
-/**
- * The list of built-in JTAG interfaces, containing entries for those
- * drivers that were enabled by the @c configure script.
- *
- * The list should be defined to contain either one minidriver interface
- * or some number of standard driver interfaces, never both.
- */
-jtag_interface_t *jtag_interfaces[] = {
-#if BUILD_ZY1000 == 1
-       &zy1000_interface,
-#elif defined(BUILD_MINIDRIVER_DUMMY)
-       &minidummy_interface,
-#else // standard drivers
-#if BUILD_PARPORT == 1
-       &parport_interface,
-#endif
-#if BUILD_DUMMY == 1
-       &dummy_interface,
-#endif
-#if BUILD_FT2232_FTD2XX == 1
-       &ft2232_interface,
-#endif
-#if BUILD_FT2232_LIBFTDI == 1
-       &ft2232_interface,
-#endif
-#if BUILD_AMTJTAGACCEL == 1
-       &amt_jtagaccel_interface,
-#endif
-#if BUILD_EP93XX == 1
-       &ep93xx_interface,
-#endif
-#if BUILD_AT91RM9200 == 1
-       &at91rm9200_interface,
-#endif
-#if BUILD_GW16012 == 1
-       &gw16012_interface,
-#endif
-#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
-       &presto_interface,
-#endif
-#if BUILD_USBPROG == 1
-       &usbprog_interface,
-#endif
-#if BUILD_JLINK == 1
-       &jlink_interface,
-#endif
-#if BUILD_VSLLINK == 1
-       &vsllink_interface,
-#endif
-#if BUILD_RLINK == 1
-       &rlink_interface,
-#endif
-#if BUILD_ARMJTAGEW == 1
-       &armjtagew_interface,
-#endif
-#endif // standard drivers
-       NULL,
-};
-
-extern jtag_interface_t *jtag_interface;
-
-/* jtag commands */
-static int handle_interface_list_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc);
-static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-static int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
-static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
-static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const *args);
-
-static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-extern int jtag_examine_chain(void);
-extern int jtag_validate_chain(void);
+extern struct jtag_interface *jtag_interface;
 
 enum jtag_tap_cfg_param {
        JCFG_EVENT
@@ -209,7 +61,7 @@ static Jim_Nvp nvp_config_opts[] = {
        { .name = NULL,          .value = -1 }
 };
 
-static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
+static int jtag_tap_configure_cmd(Jim_GetOptInfo *goi, struct jtag_tap * tap)
 {
        Jim_Nvp *n;
        Jim_Obj *o;
@@ -228,11 +80,11 @@ static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
                switch (n->value) {
                        case JCFG_EVENT:
                                if (goi->argc == 0) {
-                                       Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
+                                       Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ...");
                                        return JIM_ERR;
                                }
 
-                               e = Jim_GetOpt_Nvp( goi, nvp_jtag_tap_event, &n );
+                               e = Jim_GetOpt_Nvp(goi, nvp_jtag_tap_event, &n);
                                if (e != JIM_OK) {
                                        Jim_GetOpt_NvpUnknown(goi, nvp_jtag_tap_event, 1);
                                        return e;
@@ -251,7 +103,7 @@ static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
                                }
 
                                {
-                                       jtag_tap_event_action_t *jteap;
+                                       struct jtag_tap_event_action *jteap;
 
                                        jteap = tap->event_action;
                                        /* replace existing? */
@@ -263,21 +115,26 @@ static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
                                        }
 
                                        if (goi->isconfigure) {
+                                               bool replace = true;
                                                if (jteap == NULL) {
                                                        /* create new */
                                                        jteap = calloc(1, sizeof (*jteap));
+                                                       replace = false;
                                                }
                                                jteap->event = n->value;
-                                               Jim_GetOpt_Obj( goi, &o);
+                                               Jim_GetOpt_Obj(goi, &o);
                                                if (jteap->body) {
                                                        Jim_DecrRefCount(interp, jteap->body);
                                                }
                                                jteap->body = Jim_DuplicateObj(goi->interp, o);
                                                Jim_IncrRefCount(jteap->body);
 
-                                               /* add to head of event list */
-                                               jteap->next = tap->event_action;
-                                               tap->event_action = jteap;
+                                               if (!replace)
+                                               {
+                                                       /* add to head of event list */
+                                                       jteap->next = tap->event_action;
+                                                       tap->event_action = jteap;
+                                               }
                                                Jim_SetEmptyResult(goi->interp);
                                        } else {
                                                /* get */
@@ -306,13 +163,12 @@ static int is_bad_irval(int ir_length, jim_wide w)
        return (w & v) != 0;
 }
 
-static int jim_newtap_cmd( Jim_GetOptInfo *goi )
+static int jim_newtap_cmd(Jim_GetOptInfo *goi)
 {
-       jtag_tap_t *pTap;
+       struct jtag_tap *pTap;
        jim_wide w;
        int x;
        int e;
-       int reqbits;
        Jim_Nvp *n;
        char *cp;
        const Jim_Nvp opts[] = {
@@ -331,7 +187,7 @@ static int jim_newtap_cmd( Jim_GetOptInfo *goi )
                { .name = NULL                          ,       .value = -1 },
        };
 
-       pTap = calloc(1, sizeof(jtag_tap_t));
+       pTap = calloc(1, sizeof(struct jtag_tap));
        if (!pTap) {
                Jim_SetResult_sprintf(goi->interp, "no memory");
                return JIM_ERR;
@@ -340,41 +196,43 @@ static int jim_newtap_cmd( Jim_GetOptInfo *goi )
        /*
         * we expect CHIP + TAP + OPTIONS
         * */
-       if ( goi->argc < 3 ){
+       if (goi->argc < 3) {
                Jim_SetResult_sprintf(goi->interp, "Missing CHIP TAP OPTIONS ....");
+               free(pTap);
                return JIM_ERR;
        }
-       Jim_GetOpt_String( goi, &cp, NULL );
+       Jim_GetOpt_String(goi, &cp, NULL);
        pTap->chip = strdup(cp);
 
-       Jim_GetOpt_String( goi, &cp, NULL );
+       Jim_GetOpt_String(goi, &cp, NULL);
        pTap->tapname = strdup(cp);
 
        /* name + dot + name + null */
        x = strlen(pTap->chip) + 1 + strlen(pTap->tapname) + 1;
-       cp = malloc( x );
-       sprintf( cp, "%s.%s", pTap->chip, pTap->tapname );
+       cp = malloc(x);
+       sprintf(cp, "%s.%s", pTap->chip, pTap->tapname);
        pTap->dotted_name = cp;
 
        LOG_DEBUG("Creating New Tap, Chip: %s, Tap: %s, Dotted: %s, %d params",
                          pTap->chip, pTap->tapname, pTap->dotted_name, goi->argc);
 
-       /* deal with options */
-#define NTREQ_IRLEN      1
-#define NTREQ_IRCAPTURE  2
-#define NTREQ_IRMASK     4
-
-       /* clear them as we find them */
-       reqbits = (NTREQ_IRLEN | NTREQ_IRCAPTURE | NTREQ_IRMASK);
+       /* IEEE specifies that the two LSBs of an IR scan are 01, so make
+        * that the default.  The "-irlen" and "-irmask" options are only
+        * needed to cope with nonstandard TAPs, or to specify more bits.
+        */
+       pTap->ir_capture_mask = 0x03;
+       pTap->ir_capture_value = 0x01;
 
-       while ( goi->argc ){
-               e = Jim_GetOpt_Nvp( goi, opts, &n );
-               if ( e != JIM_OK ){
-                       Jim_GetOpt_NvpUnknown( goi, opts, 0 );
+       while (goi->argc) {
+               e = Jim_GetOpt_Nvp(goi, opts, &n);
+               if (e != JIM_OK) {
+                       Jim_GetOpt_NvpUnknown(goi, opts, 0);
+                       free((void *)pTap->dotted_name);
+                       free(pTap);
                        return e;
                }
-               LOG_DEBUG("Processing option: %s", n->name );
-               switch( n->value ){
+               LOG_DEBUG("Processing option: %s", n->name);
+               switch (n->value) {
                case NTAP_OPT_ENABLED:
                        pTap->disabled_after_reset = false;
                        break;
@@ -385,15 +243,19 @@ static int jim_newtap_cmd( Jim_GetOptInfo *goi )
                {
                        uint32_t *new_expected_ids;
 
-                       e = Jim_GetOpt_Wide( goi, &w );
-                       if ( e != JIM_OK) {
+                       e = Jim_GetOpt_Wide(goi, &w);
+                       if (e != JIM_OK) {
                                Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
+                               free((void *)pTap->dotted_name);
+                               free(pTap);
                                return e;
                        }
 
                        new_expected_ids = malloc(sizeof(uint32_t) * (pTap->expected_ids_cnt + 1));
                        if (new_expected_ids == NULL) {
-                               Jim_SetResult_sprintf( goi->interp, "no memory");
+                               Jim_SetResult_sprintf(goi->interp, "no memory");
+                               free((void *)pTap->dotted_name);
+                               free(pTap);
                                return JIM_ERR;
                        }
 
@@ -409,116 +271,126 @@ static int jim_newtap_cmd( Jim_GetOptInfo *goi )
                case NTAP_OPT_IRLEN:
                case NTAP_OPT_IRMASK:
                case NTAP_OPT_IRCAPTURE:
-                       e = Jim_GetOpt_Wide( goi, &w );
-                       if ( e != JIM_OK ){
-                               Jim_SetResult_sprintf( goi->interp, "option: %s bad parameter", n->name );
+                       e = Jim_GetOpt_Wide(goi, &w);
+                       if (e != JIM_OK) {
+                               Jim_SetResult_sprintf(goi->interp, "option: %s bad parameter", n->name);
+                               free((void *)pTap->dotted_name);
+                               free(pTap);
                                return e;
                        }
-                       switch(n->value){
+                       switch (n->value) {
                        case NTAP_OPT_IRLEN:
                                if (w > (jim_wide) (8 * sizeof(pTap->ir_capture_value)))
-                                       LOG_WARNING("huge IR length %d", (int) w);
+                                       LOG_WARNING("%s: huge IR length %d",
+                                                       pTap->dotted_name,
+                                                       (int) w);
                                pTap->ir_length = w;
-                               reqbits &= (~(NTREQ_IRLEN));
                                break;
                        case NTAP_OPT_IRMASK:
                                if (is_bad_irval(pTap->ir_length, w)) {
-                                       LOG_ERROR("IR mask %x too big",
+                                       LOG_ERROR("%s: IR mask %x too big",
+                                                       pTap->dotted_name,
                                                        (int) w);
+                                       free((void *)pTap->dotted_name);
+                                       free(pTap);
                                        return ERROR_FAIL;
                                }
+                               if ((w & 3) != 3)
+                                       LOG_WARNING("%s: nonstandard IR mask",
+                                                       pTap->dotted_name);
                                pTap->ir_capture_mask = w;
-                               reqbits &= (~(NTREQ_IRMASK));
                                break;
                        case NTAP_OPT_IRCAPTURE:
                                if (is_bad_irval(pTap->ir_length, w)) {
-                                       LOG_ERROR("IR capture %x too big",
+                                       LOG_ERROR("%s: IR capture %x too big",
+                                                       pTap->dotted_name,
                                                        (int) w);
+                                       free((void *)pTap->dotted_name);
+                                       free(pTap);
                                        return ERROR_FAIL;
                                }
+                               if ((w & 3) != 1)
+                                       LOG_WARNING("%s: nonstandard IR value",
+                                                       pTap->dotted_name);
                                pTap->ir_capture_value = w;
-                               reqbits &= (~(NTREQ_IRCAPTURE));
                                break;
                        }
-               } /* switch(n->value) */
-       } /* while ( goi->argc ) */
+               } /* switch (n->value) */
+       } /* while (goi->argc) */
 
        /* default is enabled-after-reset */
        pTap->enabled = !pTap->disabled_after_reset;
 
        /* Did all the required option bits get cleared? */
-       if (0 == reqbits)
+       if (pTap->ir_length != 0)
        {
                jtag_tap_init(pTap);
                return ERROR_OK;
        }
 
        Jim_SetResult_sprintf(goi->interp,
-                       "newtap: %s missing required parameters",
+                       "newtap: %s missing IR length",
                        pTap->dotted_name);
        jtag_tap_free(pTap);
        return JIM_ERR;
 }
 
-static void jtag_tap_handle_event(jtag_tap_t *tap, enum jtag_event e)
+static void jtag_tap_handle_event(struct jtag_tap *tap, enum jtag_event e)
 {
-       jtag_tap_event_action_t * jteap;
-       int done;
+       struct jtag_tap_event_action * jteap;
 
-       jteap = tap->event_action;
-
-       done = 0;
-       while (jteap) {
+       for (jteap = tap->event_action; jteap != NULL; jteap = jteap->next) {
                if (jteap->event == e) {
-                       done = 1;
-                       LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
+                       LOG_DEBUG("JTAG tap: %s event: %d (%s)\n\taction: %s",
                                        tap->dotted_name,
                                        e,
                                        Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
-                                       Jim_GetString(jteap->body, NULL) );
+                                       Jim_GetString(jteap->body, NULL));
                        if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
                                Jim_PrintErrorMessage(interp);
-                       } else {
+                       } else switch (e) {
+                       case JTAG_TAP_EVENT_ENABLE:
+                       case JTAG_TAP_EVENT_DISABLE:
                                /* NOTE:  we currently assume the handlers
-                                * can't fail.  That presumes later code
-                                * will be verifying the scan chains ...
+                                * can't fail.  Right here is where we should
+                                * really be verifying the scan chains ...
                                 */
                                tap->enabled = (e == JTAG_TAP_EVENT_ENABLE);
+                               LOG_INFO("JTAG tap: %s %s", tap->dotted_name,
+                                       tap->enabled ? "enabled" : "disabled");
+                               break;
+                       default:
+                               break;
                        }
                }
-
-               jteap = jteap->next;
-       }
-
-       if (!done) {
-               LOG_DEBUG( "event %d %s - no action",
-                               e,
-                               Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
        }
 }
 
 
-static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
+static int jim_jtag_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
        Jim_GetOptInfo goi;
        int e;
        Jim_Nvp *n;
        Jim_Obj *o;
-       struct command_context_s *context;
+       struct command_context *context;
 
        enum {
                JTAG_CMD_INTERFACE,
+               JTAG_CMD_INIT,
                JTAG_CMD_INIT_RESET,
                JTAG_CMD_NEWTAP,
                JTAG_CMD_TAPENABLE,
                JTAG_CMD_TAPDISABLE,
                JTAG_CMD_TAPISENABLED,
                JTAG_CMD_CONFIGURE,
-               JTAG_CMD_CGET
+               JTAG_CMD_CGET,
+               JTAG_CMD_NAMES,
        };
 
        const Jim_Nvp jtag_cmds[] = {
                { .name = "interface"     , .value = JTAG_CMD_INTERFACE },
+               { .name = "arp_init"      , .value = JTAG_CMD_INIT },
                { .name = "arp_init-reset", .value = JTAG_CMD_INIT_RESET },
                { .name = "newtap"        , .value = JTAG_CMD_NEWTAP },
                { .name = "tapisenabled"     , .value = JTAG_CMD_TAPISENABLED },
@@ -526,55 +398,68 @@ static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv
                { .name = "tapdisable"    , .value = JTAG_CMD_TAPDISABLE },
                { .name = "configure"     , .value = JTAG_CMD_CONFIGURE },
                { .name = "cget"          , .value = JTAG_CMD_CGET },
+               { .name = "names"         , .value = JTAG_CMD_NAMES },
 
                { .name = NULL, .value = -1 },
        };
 
        context = Jim_GetAssocData(interp, "context");
        /* go past the command */
-       Jim_GetOpt_Setup( &goi, interp, argc-1, argv+1 );
+       Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
 
-       e = Jim_GetOpt_Nvp( &goi, jtag_cmds, &n );
-       if ( e != JIM_OK ){
-               Jim_GetOpt_NvpUnknown( &goi, jtag_cmds, 0 );
+       e = Jim_GetOpt_Nvp(&goi, jtag_cmds, &n);
+       if (e != JIM_OK) {
+               Jim_GetOpt_NvpUnknown(&goi, jtag_cmds, 0);
                return e;
        }
-               Jim_SetEmptyResult( goi.interp );
-       switch( n->value ){
+               Jim_SetEmptyResult(goi.interp);
+       switch (n->value) {
        case JTAG_CMD_INTERFACE:
                /* return the name of the interface */
                /* TCL code might need to know the exact type... */
                /* FUTURE: we allow this as a means to "set" the interface. */
-               if ( goi.argc != 0 ){
-                       Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
+               if (goi.argc != 0) {
+                       Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
+                       return JIM_ERR;
+               }
+               const char *name = jtag_interface ? jtag_interface->name : NULL;
+               Jim_SetResultString(goi.interp, name ? : "undefined", -1);
+               return JIM_OK;
+       case JTAG_CMD_INIT:
+               if (goi.argc != 0) {
+                       Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
+                       return JIM_ERR;
+               }
+               e = jtag_init_inner(context);
+               if (e != ERROR_OK) {
+                       Jim_SetResult_sprintf(goi.interp, "error: %d", e);
                        return JIM_ERR;
                }
-               Jim_SetResultString( goi.interp, jtag_interface->name, -1 );
                return JIM_OK;
        case JTAG_CMD_INIT_RESET:
-               if ( goi.argc != 0 ){
-                       Jim_WrongNumArgs( goi.interp, 1, goi.argv-1, "(no params)");
+               if (goi.argc != 0) {
+                       Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
                        return JIM_ERR;
                }
                e = jtag_init_reset(context);
-               if ( e != ERROR_OK ){
-                       Jim_SetResult_sprintf( goi.interp, "error: %d", e);
+               if (e != ERROR_OK) {
+                       Jim_SetResult_sprintf(goi.interp, "error: %d", e);
                        return JIM_ERR;
                }
                return JIM_OK;
        case JTAG_CMD_NEWTAP:
-               return jim_newtap_cmd( &goi );
+               return jim_newtap_cmd(&goi);
                break;
        case JTAG_CMD_TAPISENABLED:
        case JTAG_CMD_TAPENABLE:
        case JTAG_CMD_TAPDISABLE:
-               if ( goi.argc != 1 ){
-                       Jim_SetResultString( goi.interp, "Too many parameters",-1 );
+               if (goi.argc != 1) {
+                       Jim_SetResultString(goi.interp, "Too many parameters",-1);
                        return JIM_ERR;
                }
 
                {
-                       jtag_tap_t *t;
+                       struct jtag_tap *t;
 
                        t = jtag_tap_by_jim_obj(goi.interp, goi.argv[0]);
                        if (t == NULL)
@@ -619,94 +504,81 @@ static int jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv
                break;
 
        case JTAG_CMD_CGET:
-               if ( goi.argc < 2 ){
-                       Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
+               if (goi.argc < 2) {
+                       Jim_WrongNumArgs(goi.interp, 0, NULL,
+                                       "cget tap_name queryparm");
                        return JIM_ERR;
                }
 
                {
-                       jtag_tap_t *t;
+                       struct jtag_tap *t;
 
                        Jim_GetOpt_Obj(&goi, &o);
-                       t = jtag_tap_by_jim_obj( goi.interp, o );
-                       if ( t == NULL ){
+                       t = jtag_tap_by_jim_obj(goi.interp, o);
+                       if (t == NULL) {
                                return JIM_ERR;
                        }
 
                        goi.isconfigure = 0;
-                       return jtag_tap_configure_cmd( &goi, t);
+                       return jtag_tap_configure_cmd(&goi, t);
                }
                break;
 
        case JTAG_CMD_CONFIGURE:
-               if ( goi.argc < 3 ){
-                       Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ?VALUE? ...");
+               if (goi.argc < 3) {
+                       Jim_WrongNumArgs(goi.interp, 0, NULL,
+                                       "configure tap_name attribute value ...");
                        return JIM_ERR;
                }
 
                {
-                       jtag_tap_t *t;
+                       struct jtag_tap *t;
 
                        Jim_GetOpt_Obj(&goi, &o);
-                       t = jtag_tap_by_jim_obj( goi.interp, o );
-                       if ( t == NULL ){
+                       t = jtag_tap_by_jim_obj(goi.interp, o);
+                       if (t == NULL) {
                                return JIM_ERR;
                        }
 
                        goi.isconfigure = 1;
-                       return jtag_tap_configure_cmd( &goi, t);
+                       return jtag_tap_configure_cmd(&goi, t);
+               }
+               break;
+
+       case JTAG_CMD_NAMES:
+               if (goi.argc != 0) {
+                       Jim_WrongNumArgs(goi.interp, 1, goi.argv, "Too many parameters");
+                       return JIM_ERR;
+               }
+               Jim_SetResult(goi.interp, Jim_NewListObj(goi.interp, NULL, 0));
+               {
+                       struct jtag_tap *tap;
+
+                       for (tap = jtag_all_taps(); tap; tap = tap->next_tap) {
+                               Jim_ListAppendElement(goi.interp,
+                                       Jim_GetResult(goi.interp),
+                                       Jim_NewStringObj(goi.interp,
+                                               tap->dotted_name, -1));
+                       }
+                       return JIM_OK;
                }
+               break;
+
        }
 
        return JIM_ERR;
 }
 
-int jtag_register_commands(struct command_context_s *cmd_ctx)
+
+void jtag_notify_event(enum jtag_event event)
 {
-       register_jim( cmd_ctx, "jtag", jim_jtag_command, "perform jtag tap actions");
-
-       register_command(cmd_ctx, NULL, "interface", handle_interface_command,
-               COMMAND_CONFIG, "try to configure interface");
-       register_command(cmd_ctx, NULL,
-               "interface_list", &handle_interface_list_command,
-               COMMAND_ANY, "list all built-in interfaces");
-       register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
-               COMMAND_ANY, "(DEPRECATED) set jtag speed (if supported)");
-       register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
-               COMMAND_ANY, "set maximum jtag speed (if supported); "
-               "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
-       register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
-               COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
-       register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
-               COMMAND_ANY,
-               "[none/trst_only/srst_only/trst_and_srst] [srst_pulls_trst/trst_pulls_srst] [combined/separate] [trst_push_pull/trst_open_drain] [srst_push_pull/srst_open_drain]");
-       register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
-               COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
-       register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
-               COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
-
-       register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
-               COMMAND_EXEC, "print current scan chain configuration");
-
-       register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
-               COMMAND_EXEC, "toggle reset lines <trst> <srst>");
-       register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
-               COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
-       register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
-               COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
-       register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
-       register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count, "returns number of times the JTAG queue has been flushed");
-       register_jim(cmd_ctx, "pathmove", Jim_Command_pathmove, "move JTAG to state1 then to state2, state3, etc. <state1>,<state2>,<stat3>...");
-
-       register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
-               COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
-       register_command(cmd_ctx, NULL, "verify_jtag", handle_verify_jtag_command,
-               COMMAND_ANY, "verify value capture <enable|disable>");
-       register_command(cmd_ctx, NULL, "tms_sequence", handle_tms_sequence_command,
-               COMMAND_ANY, "choose short(default) or long tms_sequence <short|long>");
-       return ERROR_OK;
+       struct jtag_tap *tap;
+
+       for (tap = jtag_all_taps(); tap; tap = tap->next_tap)
+               jtag_tap_handle_event(tap, event);
 }
 
+
 static int default_khz(int khz, int *jtag_speed)
 {
        LOG_ERROR("Translation from khz to jtag_speed not implemented");
@@ -721,18 +593,32 @@ static int default_speed_div(int speed, int *khz)
 
 static int default_power_dropout(int *dropout)
 {
-       *dropout=0; /* by default we can't detect power dropout */
+       *dropout = 0; /* by default we can't detect power dropout */
        return ERROR_OK;
 }
 
 static int default_srst_asserted(int *srst_asserted)
 {
-       *srst_asserted=0; /* by default we can't detect srst asserted */
+       *srst_asserted = 0; /* by default we can't detect srst asserted */
+       return ERROR_OK;
+}
+
+COMMAND_HANDLER(handle_interface_list_command)
+{
+       if (strcmp(CMD_NAME, "interface_list") == 0 && CMD_ARGC > 0)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+
+       command_print(CMD_CTX, "The following JTAG interfaces are available:");
+       for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
+       {
+               const char *name = jtag_interfaces[i]->name;
+               command_print(CMD_CTX, "%u: %s", i + 1, name);
+       }
+
        return ERROR_OK;
 }
 
-static int handle_interface_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_interface_command)
 {
        /* check whether the interface is already configured */
        if (jtag_interface)
@@ -742,15 +628,15 @@ static int handle_interface_command(struct command_context_s *cmd_ctx,
        }
 
        /* interface name is a mandatory argument */
-       if (argc != 1 || args[0][0] == '\0')
+       if (CMD_ARGC != 1 || CMD_ARGV[0][0] == '\0')
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
        {
-               if (strcmp(args[0], jtag_interfaces[i]->name) != 0)
+               if (strcmp(CMD_ARGV[0], jtag_interfaces[i]->name) != 0)
                        continue;
 
-               int retval = jtag_interfaces[i]->register_commands(cmd_ctx);
+               int retval = jtag_interfaces[i]->register_commands(CMD_CTX);
                if (ERROR_OK != retval)
                                return retval;
 
@@ -771,103 +657,26 @@ static int handle_interface_command(struct command_context_s *cmd_ctx,
        /* no valid interface was found (i.e. the configuration option,
         * didn't match one of the compiled-in interfaces
         */
-       LOG_ERROR("The specified JTAG interface was not found (%s)", args[0]);
-       handle_interface_list_command(cmd_ctx, cmd, args, argc);
+       LOG_ERROR("The specified JTAG interface was not found (%s)", CMD_ARGV[0]);
+       CALL_COMMAND_HANDLER(handle_interface_list_command);
        return ERROR_JTAG_INVALID_INTERFACE;
 }
 
-static int handle_interface_list_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
-{
-       if (strcmp(cmd, "interface_list") == 0 && argc > 0)
-               return ERROR_COMMAND_SYNTAX_ERROR;
-
-       command_print(cmd_ctx, "The following JTAG interfaces are available:");
-       for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
-       {
-               const char *name = jtag_interfaces[i]->name;
-               command_print(cmd_ctx, "%u: %s", i + 1, name);
-       }
-
-       return ERROR_OK;
-}
-
-static int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
-{
-       int e;
-       char buf[1024];
-       Jim_Obj *newargs[ 10 ];
-       /*
-        * CONVERT SYNTAX
-        * argv[-1] = command
-        * argv[ 0] = ir length
-        * argv[ 1] = ir capture
-        * argv[ 2] = ir mask
-        * argv[ 3] = not actually used by anything but in the docs
-        */
-
-       if ( argc < 4 ){
-               command_print( cmd_ctx, "OLD DEPRECATED SYNTAX: Please use the NEW syntax");
-               return ERROR_OK;
-       }
-       command_print( cmd_ctx, "OLD SYNTAX: DEPRECATED - translating to new syntax");
-       command_print( cmd_ctx, "jtag newtap CHIP TAP -irlen %s -ircapture %s -irvalue %s",
-                                  args[0],
-                                  args[1],
-                                  args[2] );
-       command_print( cmd_ctx, "Example: STM32 has 2 taps, the cortexM3(len4) + boundaryscan(len5)");
-       command_print( cmd_ctx, "jtag newtap stm32 cortexm3 ....., thus creating the tap: \"stm32.cortexm3\"");
-       command_print( cmd_ctx, "jtag newtap stm32 boundary ....., and the tap: \"stm32.boundary\"");
-       command_print( cmd_ctx, "And then refer to the taps by the dotted name.");
-
-       newargs[0] = Jim_NewStringObj( interp, "jtag", -1   );
-       newargs[1] = Jim_NewStringObj( interp, "newtap", -1 );
-       sprintf( buf, "chip%d", jtag_tap_count() );
-       newargs[2] = Jim_NewStringObj( interp, buf, -1 );
-       sprintf( buf, "tap%d", jtag_tap_count() );
-       newargs[3] = Jim_NewStringObj( interp, buf, -1  );
-       newargs[4] = Jim_NewStringObj( interp, "-irlen", -1  );
-       newargs[5] = Jim_NewStringObj( interp, args[0], -1  );
-       newargs[6] = Jim_NewStringObj( interp, "-ircapture", -1  );
-       newargs[7] = Jim_NewStringObj( interp, args[1], -1  );
-       newargs[8] = Jim_NewStringObj( interp, "-irmask", -1  );
-       newargs[9] = Jim_NewStringObj( interp, args[2], -1  );
-
-       command_print( cmd_ctx, "NEW COMMAND:");
-       sprintf( buf, "%s %s %s %s %s %s %s %s %s %s",
-                        Jim_GetString( newargs[0], NULL ),
-                        Jim_GetString( newargs[1], NULL ),
-                        Jim_GetString( newargs[2], NULL ),
-                        Jim_GetString( newargs[3], NULL ),
-                        Jim_GetString( newargs[4], NULL ),
-                        Jim_GetString( newargs[5], NULL ),
-                        Jim_GetString( newargs[6], NULL ),
-                        Jim_GetString( newargs[7], NULL ),
-                        Jim_GetString( newargs[8], NULL ),
-                        Jim_GetString( newargs[9], NULL ) );
-
-       e = jim_jtag_command( interp, 10, newargs );
-       if ( e != JIM_OK ){
-               command_print( cmd_ctx, "%s", Jim_GetString( Jim_GetResult(interp), NULL ) );
-       }
-       return e;
-}
-
-static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_scan_chain_command)
 {
-       jtag_tap_t *tap;
+       struct jtag_tap *tap;
 
        tap = jtag_all_taps();
-       command_print(cmd_ctx, "     TapName            | Enabled |   IdCode      Expected    IrLen IrCap  IrMask Instr     ");
-       command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");
+       command_print(CMD_CTX, "     TapName            | Enabled |   IdCode      Expected    IrLen IrCap  IrMask Instr     ");
+       command_print(CMD_CTX, "---|--------------------|---------|------------|------------|------|------|------|---------");
 
-       while ( tap ){
+       while (tap) {
                uint32_t expected, expected_mask, cur_instr, ii;
                expected = buf_get_u32(tap->expected, 0, tap->ir_length);
                expected_mask = buf_get_u32(tap->expected_mask, 0, tap->ir_length);
                cur_instr = buf_get_u32(tap->cur_instr, 0, tap->ir_length);
 
-               command_print(cmd_ctx,
+               command_print(CMD_CTX,
                                          "%2d | %-18s |    %c    | 0x%08x | 0x%08x | 0x%02x | 0x%02x | 0x%02x | 0x%02x",
                                          tap->abs_chain_position,
                                          tap->dotted_name,
@@ -880,7 +689,7 @@ static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cm
                                          (unsigned int)(cur_instr));
 
                for (ii = 1; ii < tap->expected_ids_cnt; ii++) {
-                       command_print(cmd_ctx, "   |                    |         |            | 0x%08x |      |      |      |         ",
+                       command_print(CMD_CTX, "   |                    |         |            | 0x%08x |      |      |      |         ",
                                                  (unsigned int)(tap->expected_ids[ii]));
                }
 
@@ -890,14 +699,11 @@ static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cm
        return ERROR_OK;
 }
 
-static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_reset_config_command)
 {
        int new_cfg = 0;
        int mask = 0;
 
-       if (argc < 1)
-               return ERROR_COMMAND_SYNTAX_ERROR;
-
        /* Original versions cared about the order of these tokens:
         *   reset_config signals [combination [trst_type [srst_type]]]
         * They also clobbered the previous configuration even on error.
@@ -905,25 +711,41 @@ static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *
         * Here we don't care about the order, and only change values
         * which have been explicitly specified.
         */
-       for (; argc; argc--, args++) {
+       for (; CMD_ARGC; CMD_ARGC--, CMD_ARGV++) {
                int tmp = 0;
                int m;
 
+               /* gating */
+               m = RESET_SRST_NO_GATING;
+               if (strcmp(*CMD_ARGV, "srst_gates_jtag") == 0)
+                       /* default: don't use JTAG while SRST asserted */;
+               else if (strcmp(*CMD_ARGV, "srst_nogate") == 0)
+                       tmp = RESET_SRST_NO_GATING;
+               else
+                       m = 0;
+               if (mask & m) {
+                       LOG_ERROR("extra reset_config %s spec (%s)",
+                                       "gating", *CMD_ARGV);
+                       return ERROR_INVALID_ARGUMENTS;
+               }
+               if (m)
+                       goto next;
+
                /* signals */
                m = RESET_HAS_TRST | RESET_HAS_SRST;
-               if (strcmp(*args, "none") == 0)
+               if (strcmp(*CMD_ARGV, "none") == 0)
                        tmp = RESET_NONE;
-               else if (strcmp(*args, "trst_only") == 0)
+               else if (strcmp(*CMD_ARGV, "trst_only") == 0)
                        tmp = RESET_HAS_TRST;
-               else if (strcmp(*args, "srst_only") == 0)
+               else if (strcmp(*CMD_ARGV, "srst_only") == 0)
                        tmp = RESET_HAS_SRST;
-               else if (strcmp(*args, "trst_and_srst") == 0)
+               else if (strcmp(*CMD_ARGV, "trst_and_srst") == 0)
                        tmp = RESET_HAS_TRST | RESET_HAS_SRST;
                else
                        m = 0;
                if (mask & m) {
                        LOG_ERROR("extra reset_config %s spec (%s)",
-                                       "signal", *args);
+                                       "signal", *CMD_ARGV);
                        return ERROR_INVALID_ARGUMENTS;
                }
                if (m)
@@ -931,19 +753,19 @@ static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *
 
                /* combination (options for broken wiring) */
                m = RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
-               if (strcmp(*args, "separate") == 0)
+               if (strcmp(*CMD_ARGV, "separate") == 0)
                        /* separate reset lines - default */;
-               else if (strcmp(*args, "srst_pulls_trst") == 0)
+               else if (strcmp(*CMD_ARGV, "srst_pulls_trst") == 0)
                        tmp |= RESET_SRST_PULLS_TRST;
-               else if (strcmp(*args, "trst_pulls_srst") == 0)
+               else if (strcmp(*CMD_ARGV, "trst_pulls_srst") == 0)
                        tmp |= RESET_TRST_PULLS_SRST;
-               else if (strcmp(*args, "combined") == 0)
+               else if (strcmp(*CMD_ARGV, "combined") == 0)
                        tmp |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
                else
                        m = 0;
                if (mask & m) {
                        LOG_ERROR("extra reset_config %s spec (%s)",
-                                       "combination", *args);
+                                       "combination", *CMD_ARGV);
                        return ERROR_INVALID_ARGUMENTS;
                }
                if (m)
@@ -951,15 +773,15 @@ static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *
 
                /* trst_type (NOP without HAS_TRST) */
                m = RESET_TRST_OPEN_DRAIN;
-               if (strcmp(*args, "trst_open_drain") == 0)
+               if (strcmp(*CMD_ARGV, "trst_open_drain") == 0)
                        tmp |= RESET_TRST_OPEN_DRAIN;
-               else if (strcmp(*args, "trst_push_pull") == 0)
+               else if (strcmp(*CMD_ARGV, "trst_push_pull") == 0)
                        /* push/pull from adapter - default */;
                else
                        m = 0;
                if (mask & m) {
                        LOG_ERROR("extra reset_config %s spec (%s)",
-                                       "trst_type", *args);
+                                       "trst_type", *CMD_ARGV);
                        return ERROR_INVALID_ARGUMENTS;
                }
                if (m)
@@ -967,22 +789,22 @@ static int handle_reset_config_command(struct command_context_s *cmd_ctx, char *
 
                /* srst_type (NOP without HAS_SRST) */
                m |= RESET_SRST_PUSH_PULL;
-               if (strcmp(*args, "srst_push_pull") == 0)
+               if (strcmp(*CMD_ARGV, "srst_push_pull") == 0)
                        tmp |= RESET_SRST_PUSH_PULL;
-               else if (strcmp(*args, "srst_open_drain") == 0)
+               else if (strcmp(*CMD_ARGV, "srst_open_drain") == 0)
                        /* open drain from adapter - default */;
                else
                        m = 0;
                if (mask & m) {
                        LOG_ERROR("extra reset_config %s spec (%s)",
-                                       "srst_type", *args);
+                                       "srst_type", *CMD_ARGV);
                        return ERROR_INVALID_ARGUMENTS;
                }
                if (m)
                        goto next;
 
                /* caller provided nonsense; fail */
-               LOG_ERROR("unknown reset_config flag (%s)", *args);
+               LOG_ERROR("unknown reset_config flag (%s)", *CMD_ARGV);
                return ERROR_INVALID_ARGUMENTS;
 
 next:
@@ -994,82 +816,156 @@ next:
        }
 
        /* clear previous values of those bits, save new values */
-       enum reset_types old_cfg = jtag_get_reset_config();
-       old_cfg &= ~mask;
-       new_cfg |= old_cfg;
-       jtag_set_reset_config(new_cfg);
+       if (mask) {
+               int old_cfg = jtag_get_reset_config();
+
+               old_cfg &= ~mask;
+               new_cfg |= old_cfg;
+               jtag_set_reset_config(new_cfg);
+       } else
+               new_cfg = jtag_get_reset_config();
+
+
+       /*
+        * Display the (now-)current reset mode
+        */
+       char *modes[5];
+
+       /* minimal JTAG has neither SRST nor TRST (so that's the default) */
+       switch (new_cfg & (RESET_HAS_TRST | RESET_HAS_SRST)) {
+       case RESET_HAS_SRST:
+               modes[0] = "srst_only";
+               break;
+       case RESET_HAS_TRST:
+               modes[0] = "trst_only";
+               break;
+       case RESET_TRST_AND_SRST:
+               modes[0] = "trst_and_srst";
+               break;
+       default:
+               modes[0] = "none";
+               break;
+       }
+
+       /* normally SRST and TRST are decoupled; but bugs happen ... */
+       switch (new_cfg & (RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST)) {
+       case RESET_SRST_PULLS_TRST:
+               modes[1] = "srst_pulls_trst";
+               break;
+       case RESET_TRST_PULLS_SRST:
+               modes[1] = "trst_pulls_srst";
+               break;
+       case RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST:
+               modes[1] = "combined";
+               break;
+       default:
+               modes[1] = "separate";
+               break;
+       }
+
+       /* TRST-less connectors include Altera, Xilinx, and minimal JTAG */
+       if (new_cfg & RESET_HAS_TRST) {
+               if (new_cfg & RESET_TRST_OPEN_DRAIN)
+                       modes[3] = " trst_open_drain";
+               else
+                       modes[3] = " trst_push_pull";
+       } else
+               modes[3] = "";
+
+       /* SRST-less connectors include TI-14, Xilinx, and minimal JTAG */
+       if (new_cfg & RESET_HAS_SRST) {
+               if (new_cfg & RESET_SRST_NO_GATING)
+                       modes[2] = " srst_nogate";
+               else
+                       modes[2] = " srst_gates_jtag";
+
+               if (new_cfg & RESET_SRST_PUSH_PULL)
+                       modes[4] = " srst_push_pull";
+               else
+                       modes[4] = " srst_open_drain";
+       } else {
+               modes[2] = "";
+               modes[4] = "";
+       }
+
+       command_print(CMD_CTX, "%s %s%s%s%s",
+                       modes[0], modes[1],
+                       modes[2], modes[3], modes[4]);
 
        return ERROR_OK;
 }
 
-static int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_jtag_nsrst_delay_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
                unsigned delay;
-               int retval = parse_uint(args[0], &delay);
-               if (ERROR_OK != retval)
-                       return retval;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
+
                jtag_set_nsrst_delay(delay);
        }
-       command_print(cmd_ctx, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
+       command_print(CMD_CTX, "jtag_nsrst_delay: %u", jtag_get_nsrst_delay());
        return ERROR_OK;
 }
 
-static int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_jtag_ntrst_delay_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
                unsigned delay;
-               int retval = parse_uint(args[0], &delay);
-               if (ERROR_OK != retval)
-                       return retval;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
+
                jtag_set_ntrst_delay(delay);
        }
-       command_print(cmd_ctx, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
+       command_print(CMD_CTX, "jtag_ntrst_delay: %u", jtag_get_ntrst_delay());
        return ERROR_OK;
 }
 
-static int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_jtag_nsrst_assert_width_command)
 {
-       int retval = ERROR_OK;
-
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
-               LOG_DEBUG("handle jtag speed");
-
-               unsigned cur_speed = 0;
-               int retval = parse_uint(args[0], &cur_speed);
-               if (ERROR_OK != retval)
-                       return retval;
-               retval = jtag_set_speed(cur_speed);
+               unsigned delay;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
 
+               jtag_set_nsrst_assert_width(delay);
        }
-       command_print(cmd_ctx, "jtag_speed: %d", jtag_get_speed());
+       command_print(CMD_CTX, "jtag_nsrst_assert_width: %u", jtag_get_nsrst_assert_width());
+       return ERROR_OK;
+}
 
-       return retval;
+COMMAND_HANDLER(handle_jtag_ntrst_assert_width_command)
+{
+       if (CMD_ARGC > 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       if (CMD_ARGC == 1)
+       {
+               unsigned delay;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], delay);
+
+               jtag_set_ntrst_assert_width(delay);
+       }
+       command_print(CMD_CTX, "jtag_ntrst_assert_width: %u", jtag_get_ntrst_assert_width());
+       return ERROR_OK;
 }
 
-static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_jtag_khz_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        int retval = ERROR_OK;
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
                unsigned khz = 0;
-               int retval = parse_uint(args[0], &khz);
-               if (ERROR_OK != retval)
-                       return retval;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
+
                retval = jtag_config_khz(khz);
                if (ERROR_OK != retval)
                        return retval;
@@ -1081,65 +977,88 @@ static int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd,
                return retval;
 
        if (cur_speed)
-               command_print(cmd_ctx, "%d kHz", cur_speed);
+               command_print(CMD_CTX, "%d kHz", cur_speed);
        else
-               command_print(cmd_ctx, "RCLK - adaptive");
+               command_print(CMD_CTX, "RCLK - adaptive");
 
        return retval;
 }
 
-static int handle_jtag_reset_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_jtag_rclk_command)
 {
-       if (argc != 2)
+       if (CMD_ARGC > 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+
+       int retval = ERROR_OK;
+       if (CMD_ARGC == 1)
+       {
+               unsigned khz = 0;
+               COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], khz);
+
+               retval = jtag_config_rclk(khz);
+               if (ERROR_OK != retval)
+                       return retval;
+       }
+
+       int cur_khz = jtag_get_speed_khz();
+       retval = jtag_get_speed_readable(&cur_khz);
+       if (ERROR_OK != retval)
+               return retval;
+
+       if (cur_khz)
+               command_print(CMD_CTX, "RCLK not supported - fallback to %d kHz", cur_khz);
+       else
+               command_print(CMD_CTX, "RCLK - adaptive");
+
+       return retval;
+}
+
+COMMAND_HANDLER(handle_jtag_reset_command)
+{
+       if (CMD_ARGC != 2)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        int trst = -1;
-       if (args[0][0] == '1')
+       if (CMD_ARGV[0][0] == '1')
                trst = 1;
-       else if (args[0][0] == '0')
+       else if (CMD_ARGV[0][0] == '0')
                trst = 0;
        else
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        int srst = -1;
-       if (args[1][0] == '1')
+       if (CMD_ARGV[1][0] == '1')
                srst = 1;
-       else if (args[1][0] == '0')
+       else if (CMD_ARGV[1][0] == '0')
                srst = 0;
        else
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (jtag_interface_init(cmd_ctx) != ERROR_OK)
+       if (jtag_interface_init(CMD_CTX) != ERROR_OK)
                return ERROR_JTAG_INIT_FAILED;
 
        jtag_add_reset(trst, srst);
-       jtag_execute_queue();
-
-       return ERROR_OK;
+       return jtag_execute_queue();
 }
 
-static int handle_runtest_command(struct command_context_s *cmd_ctx,
-               char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_runtest_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        unsigned num_clocks;
-       int retval = parse_uint(args[0], &num_clocks);
-       if (ERROR_OK != retval)
-               return retval;
+       COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], num_clocks);
 
        jtag_add_runtest(num_clocks, TAP_IDLE);
-       jtag_execute_queue();
-
-       return ERROR_OK;
+       return jtag_execute_queue();
 }
 
 /*
  * For "irscan" or "drscan" commands, the "end" (really, "next") state
  * should be stable ... and *NOT* a shift state, otherwise free-running
  * jtag clocks could change the values latched by the update state.
+ * Not surprisingly, this is the same constraint as SVF; the "irscan"
+ * and "drscan" commands are a write-only subset of what SVF provides.
  */
 static bool scan_is_safe(tap_state_t state)
 {
@@ -1156,14 +1075,14 @@ static bool scan_is_safe(tap_state_t state)
 }
 
 
-static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_irscan_command)
 {
        int i;
-       scan_field_t *fields;
-       jtag_tap_t *tap;
+       struct scan_field *fields;
+       struct jtag_tap *tap;
        tap_state_t endstate;
 
-       if ((argc < 2) || (argc % 2))
+       if ((CMD_ARGC < 2) || (CMD_ARGC % 2))
        {
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
@@ -1174,52 +1093,46 @@ static int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, c
         */
        endstate = TAP_IDLE;
 
-       if ( argc >= 4 ){
+       if (CMD_ARGC >= 4) {
                /* have at least one pair of numbers. */
                /* is last pair the magic text? */
-               if ( 0 == strcmp( "-endstate", args[ argc - 2 ] ) ){
-                       const char *cpA;
-                       const char *cpS;
-                       cpA = args[ argc-1 ];
-                       for( endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++ ){
-                               cpS = tap_state_name( endstate );
-                               if ( 0 == strcmp( cpA, cpS ) ){
-                                       break;
-                               }
-                       }
-                       if ( endstate >= TAP_NUM_STATES ){
+               if (strcmp("-endstate", CMD_ARGV[CMD_ARGC - 2]) == 0) {
+                       endstate = tap_state_by_name(CMD_ARGV[CMD_ARGC - 1]);
+                       if (endstate == TAP_INVALID)
                                return ERROR_COMMAND_SYNTAX_ERROR;
-                       } else {
-                               if (!scan_is_safe(endstate))
-                                       LOG_WARNING("irscan with unsafe "
-                                                       "endstate \"%s\"", cpA);
-                               /* found - remove the last 2 args */
-                               argc -= 2;
-                       }
+                       if (!scan_is_safe(endstate))
+                               LOG_WARNING("unstable irscan endstate \"%s\"",
+                                               CMD_ARGV[CMD_ARGC - 1]);
+                       CMD_ARGC -= 2;
                }
        }
 
-       int num_fields = argc / 2;
-       size_t fields_len = sizeof(scan_field_t) * num_fields;
+       int num_fields = CMD_ARGC / 2;
+       size_t fields_len = sizeof(struct scan_field) * num_fields;
        fields = malloc(fields_len);
        memset(fields, 0, fields_len);
 
        int retval;
        for (i = 0; i < num_fields; i++)
        {
-               tap = jtag_tap_by_string( args[i*2] );
-               if (tap==NULL)
+               tap = jtag_tap_by_string(CMD_ARGV[i*2]);
+               if (tap == NULL)
                {
-                       command_print( cmd_ctx, "Tap: %s unknown", args[i*2] );
+                       int j;
+                       for (j = 0; j < i; j++)
+                               free(fields[j].out_value);
+                        free(fields);
+                       command_print(CMD_CTX, "Tap: %s unknown", CMD_ARGV[i*2]);
+
                        return ERROR_FAIL;
                }
                int field_size = tap->ir_length;
                fields[i].tap = tap;
                fields[i].num_bits = field_size;
-               fields[i].out_value = malloc(CEIL(field_size, 8));
+               fields[i].out_value = malloc(DIV_ROUND_UP(field_size, 8));
 
                uint32_t value;
-               retval = parse_u32(args[i * 2 + 1], &value);
+               retval = parse_u32(CMD_ARGV[i * 2 + 1], &value);
                if (ERROR_OK != retval)
                        goto error_return;
                buf_set_u32(fields[i].out_value, 0, field_size, value);
@@ -1246,11 +1159,11 @@ error_return:
 static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
 {
        int retval;
-       scan_field_t *fields;
+       struct scan_field *fields;
        int num_fields;
        int field_count = 0;
        int i, e;
-       jtag_tap_t *tap;
+       struct jtag_tap *tap;
        tap_state_t endstate;
 
        /* args[1] = device
@@ -1262,7 +1175,7 @@ static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args
        *     args[N-2] = "-endstate"
         *     args[N-1] = statename
         */
-       if ((argc < 4) || ((argc % 2)!=0))
+       if ((argc < 4) || ((argc % 2) != 0))
        {
                Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
                return JIM_ERR;
@@ -1274,19 +1187,19 @@ static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args
 
        /* validate arguments as numbers */
        e = JIM_OK;
-       for (i = 2; i < argc; i+=2)
+       for (i = 2; i < argc; i += 2)
        {
                long bits;
                const char *cp;
 
                e = Jim_GetLong(interp, args[i], &bits);
                /* If valid - try next arg */
-               if ( e == JIM_OK ){
+               if (e == JIM_OK) {
                        continue;
                }
 
                /* Not valid.. are we at the end? */
-               if ( ((i+2) != argc) ){
+               if (((i + 2) != argc)) {
                        /* nope, then error */
                        return e;
                }
@@ -1297,17 +1210,17 @@ static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args
                 */
 
                /* get arg as a string. */
-               cp = Jim_GetString( args[i], NULL );
+               cp = Jim_GetString(args[i], NULL);
                /* is it the magic? */
-               if ( 0 == strcmp( "-endstate", cp ) ){
+               if (0 == strcmp("-endstate", cp)) {
                        /* is the statename valid? */
-                       cp = Jim_GetString( args[i+1], NULL );
+                       cp = Jim_GetString(args[i + 1], NULL);
 
                        /* see if it is a valid state name */
                        endstate = tap_state_by_name(cp);
-                       if ( endstate < 0 ){
+                       if (endstate < 0) {
                                /* update the error message */
-                               Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
+                               Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp);
                        } else {
                                if (!scan_is_safe(endstate))
                                        LOG_WARNING("drscan with unsafe "
@@ -1321,30 +1234,30 @@ static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args
                }
 
                /* Still an error? */
-               if ( e != JIM_OK ){
+               if (e != JIM_OK) {
                        return e; /* too bad */
                }
        } /* validate args */
 
-       tap = jtag_tap_by_jim_obj( interp, args[1] );
-       if ( tap == NULL ){
+       tap = jtag_tap_by_jim_obj(interp, args[1]);
+       if (tap == NULL) {
                return JIM_ERR;
        }
 
-       num_fields=(argc-2)/2;
-       fields = malloc(sizeof(scan_field_t) * num_fields);
-       for (i = 2; i < argc; i+=2)
+       num_fields = (argc-2)/2;
+       fields = malloc(sizeof(struct scan_field) * num_fields);
+       for (i = 2; i < argc; i += 2)
        {
                long bits;
                int len;
                const char *str;
 
                Jim_GetLong(interp, args[i], &bits);
-               str = Jim_GetString(args[i+1], &len);
+               str = Jim_GetString(args[i + 1], &len);
 
                fields[field_count].tap = tap;
                fields[field_count].num_bits = bits;
-               fields[field_count].out_value = malloc(CEIL(bits, 8));
+               fields[field_count].out_value = malloc(DIV_ROUND_UP(bits, 8));
                str_to_buf(str, len, fields[field_count].out_value, bits, 0);
                fields[field_count].in_value = fields[field_count].out_value;
                field_count++;
@@ -1359,9 +1272,9 @@ static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args
                return JIM_ERR;
        }
 
-       field_count=0;
+       field_count = 0;
        Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
-       for (i = 2; i < argc; i+=2)
+       for (i = 2; i < argc; i += 2)
        {
                long bits;
                char *str;
@@ -1387,7 +1300,7 @@ static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *ar
 {
        tap_state_t states[8];
 
-       if ((argc < 2) || ((size_t)argc > (sizeof(states)/sizeof(*states)+1)))
+       if ((argc < 2) || ((size_t)argc > (sizeof(states)/sizeof(*states) + 1)))
        {
                Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
                return JIM_ERR;
@@ -1396,26 +1309,26 @@ static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *ar
        script_debug(interp, "pathmove", argc, args);
 
        int i;
-       for (i=0; i<argc-1; i++)
+       for (i = 0; i < argc-1; i++)
        {
                const char *cp;
-               cp = Jim_GetString( args[i+1], NULL );
+               cp = Jim_GetString(args[i + 1], NULL);
                states[i] = tap_state_by_name(cp);
-               if ( states[i] < 0 )
+               if (states[i] < 0)
                {
                        /* update the error message */
-                       Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp );
+                       Jim_SetResult_sprintf(interp,"endstate: %s invalid", cp);
                        return JIM_ERR;
                }
        }
 
-       if ((jtag_add_statemove(states[0]) != ERROR_OK) || ( jtag_execute_queue()!= ERROR_OK))
+       if ((jtag_add_statemove(states[0]) != ERROR_OK) || (jtag_execute_queue()!= ERROR_OK))
        {
                Jim_SetResultString(interp, "pathmove: jtag execute failed",-1);
                return JIM_ERR;
        }
 
-       jtag_add_pathmove(argc-2, states+1);
+       jtag_add_pathmove(argc-2, states + 1);
 
        if (jtag_execute_queue()!= ERROR_OK)
        {
@@ -1437,59 +1350,59 @@ static int Jim_Command_flush_count(Jim_Interp *interp, int argc, Jim_Obj *const
 }
 
 
-static int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_verify_ircapture_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
-               if (strcmp(args[0], "enable") == 0)
+               if (strcmp(CMD_ARGV[0], "enable") == 0)
                        jtag_set_verify_capture_ir(true);
-               else if (strcmp(args[0], "disable") == 0)
+               else if (strcmp(CMD_ARGV[0], "disable") == 0)
                        jtag_set_verify_capture_ir(false);
                else
                        return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
        const char *status = jtag_will_verify_capture_ir() ? "enabled": "disabled";
-       command_print(cmd_ctx, "verify Capture-IR is %s", status);
+       command_print(CMD_CTX, "verify Capture-IR is %s", status);
 
        return ERROR_OK;
 }
 
-static int handle_verify_jtag_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_verify_jtag_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
-               if (strcmp(args[0], "enable") == 0)
+               if (strcmp(CMD_ARGV[0], "enable") == 0)
                        jtag_set_verify(true);
-               else if (strcmp(args[0], "disable") == 0)
+               else if (strcmp(CMD_ARGV[0], "disable") == 0)
                        jtag_set_verify(false);
                else
                        return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
        const char *status = jtag_will_verify() ? "enabled": "disabled";
-       command_print(cmd_ctx, "verify jtag capture is %s", status);
+       command_print(CMD_CTX, "verify jtag capture is %s", status);
 
        return ERROR_OK;
 }
 
-static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_tms_sequence_command)
 {
-       if (argc > 1)
+       if (CMD_ARGC > 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (argc == 1)
+       if (CMD_ARGC == 1)
        {
                bool use_new_table;
-               if (strcmp(args[0], "short") == 0)
+               if (strcmp(CMD_ARGV[0], "short") == 0)
                        use_new_table = true;
-               else if (strcmp(args[0], "long") == 0)
+               else if (strcmp(CMD_ARGV[0], "long") == 0)
                        use_new_table = false;
                else
                        return ERROR_COMMAND_SYNTAX_ERROR;
@@ -1497,8 +1410,95 @@ static int handle_tms_sequence_command(struct command_context_s *cmd_ctx, char *
                tap_use_new_tms_table(use_new_table);
        }
 
-       command_print(cmd_ctx, "tms sequence is  %s",
+       command_print(CMD_CTX, "tms sequence is  %s",
                        tap_uses_new_tms_table() ? "short": "long");
 
        return ERROR_OK;
 }
+
+int jtag_register_commands(struct command_context *cmd_ctx)
+{
+       register_jim(cmd_ctx, "jtag", jim_jtag_command,
+                       "perform jtag tap actions");
+
+       register_command(cmd_ctx, NULL, "interface",
+                       handle_interface_command, COMMAND_CONFIG,
+                       "try to configure interface");
+       register_command(cmd_ctx, NULL, "interface_list",
+                       &handle_interface_list_command, COMMAND_ANY,
+                       "list all built-in interfaces");
+
+       register_command(cmd_ctx, NULL, "jtag_khz",
+                       handle_jtag_khz_command, COMMAND_ANY,
+                       "set maximum jtag speed (if supported); "
+                       "parameter is maximum khz, or 0 for adaptive clocking (RTCK).");
+       register_command(cmd_ctx, NULL, "jtag_rclk",
+                       handle_jtag_rclk_command, COMMAND_ANY,
+                       "fallback_speed_khz - set JTAG speed to RCLK or use fallback speed");
+       register_command(cmd_ctx, NULL, "reset_config",
+                       handle_reset_config_command, COMMAND_ANY,
+                       "reset_config "
+                       "[none|trst_only|srst_only|trst_and_srst] "
+                       "[srst_pulls_trst|trst_pulls_srst|combined|separate] "
+                       "[srst_gates_jtag|srst_nogate] "
+                       "[trst_push_pull|trst_open_drain] "
+                       "[srst_push_pull|srst_open_drain]");
+
+       register_command(cmd_ctx, NULL, "jtag_nsrst_delay",
+                       handle_jtag_nsrst_delay_command, COMMAND_ANY,
+                       "jtag_nsrst_delay <ms> "
+                       "- delay after deasserting srst in ms");
+       register_command(cmd_ctx, NULL, "jtag_ntrst_delay",
+                       handle_jtag_ntrst_delay_command, COMMAND_ANY,
+                       "jtag_ntrst_delay <ms> "
+                       "- delay after deasserting trst in ms");
+
+       register_command(cmd_ctx, NULL, "jtag_nsrst_assert_width",
+                       handle_jtag_nsrst_assert_width_command, COMMAND_ANY,
+                       "jtag_nsrst_assert_width <ms> "
+                       "- delay after asserting srst in ms");
+       register_command(cmd_ctx, NULL, "jtag_ntrst_assert_width",
+                       handle_jtag_ntrst_assert_width_command, COMMAND_ANY,
+                       "jtag_ntrst_assert_width <ms> "
+                       "- delay after asserting trst in ms");
+
+       register_command(cmd_ctx, NULL, "scan_chain",
+                       handle_scan_chain_command, COMMAND_EXEC,
+                       "print current scan chain configuration");
+
+       register_command(cmd_ctx, NULL, "jtag_reset",
+                       handle_jtag_reset_command, COMMAND_EXEC,
+                       "toggle reset lines <trst> <srst>");
+       register_command(cmd_ctx, NULL, "runtest",
+                       handle_runtest_command, COMMAND_EXEC,
+                       "move to Run-Test/Idle, and execute <num_cycles>");
+       register_command(cmd_ctx, NULL, "irscan",
+                       handle_irscan_command, COMMAND_EXEC,
+                       "execute IR scan <device> <instr> [dev2] [instr2] ...");
+
+       register_jim(cmd_ctx, "drscan", Jim_Command_drscan,
+                       "execute DR scan <device> "
+                       "<num_bits> <value> <num_bits1> <value2> ...");
+
+       register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count,
+                       "returns number of times the JTAG queue has been flushed");
+
+       register_jim(cmd_ctx, "pathmove", Jim_Command_pathmove,
+                       "<state1>,<state2>,<state3>... "
+                       "- move JTAG to state1 then to state2, state3, etc.");
+
+       register_command(cmd_ctx, NULL, "verify_ircapture",
+                       handle_verify_ircapture_command, COMMAND_ANY,
+                       "verify value captured during Capture-IR <enable | disable>");
+       register_command(cmd_ctx, NULL, "verify_jtag",
+                       handle_verify_jtag_command, COMMAND_ANY,
+                       "verify value capture <enable | disable>");
+
+       register_command(cmd_ctx, NULL, "tms_sequence",
+                       handle_tms_sequence_command, COMMAND_ANY,
+                       "choose short(default) or long tms_sequence <short | long>");
+
+       return ERROR_OK;
+}
+
+