Commit 846a2589 authored by kc8apf's avatar kc8apf
Browse files

Add JTAG tap events for enable/disable

git-svn-id: svn://svn.berlios.de/openocd/trunk@1237 b42882b7-edfa-0310-969c-e2dbd0fdcd60
parent bcde5b38
......@@ -110,6 +110,13 @@ char* jtag_event_strings[] =
"JTAG controller reset (RESET or TRST)"
};
const Jim_Nvp nvp_jtag_tap_event[] = {
{ .value = JTAG_TAP_EVENT_ENABLE, .name = "tap-enable" },
{ .value = JTAG_TAP_EVENT_DISABLE, .name = "tap-disable" },
{ .name = NULL, .value = -1 }
};
/* kludge!!!! these are just global variables that the
* interface use internally. They really belong
* inside the drivers, but we don't want to break
......@@ -1699,6 +1706,104 @@ int jtag_validate_chain(void)
return ERROR_OK;
}
enum jtag_tap_cfg_param {
JCFG_EVENT
};
static Jim_Nvp nvp_config_opts[] = {
{ .name = "-event", .value = JCFG_EVENT },
{ .name = NULL, .value = -1 }
};
static int
jtag_tap_configure_cmd( Jim_GetOptInfo *goi,
jtag_tap_t * tap)
{
Jim_Nvp *n;
Jim_Obj *o;
int e;
/* parse config or cget options */
while (goi->argc > 0) {
Jim_SetEmptyResult (goi->interp);
e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
if (e != JIM_OK) {
Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
return e;
}
switch (n->value) {
case JCFG_EVENT:
if (goi->argc == 0) {
Jim_WrongNumArgs( goi->interp, goi->argc, goi->argv, "-event ?event-name? ..." );
return JIM_ERR;
}
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;
}
if (goi->isconfigure) {
if (goi->argc != 1) {
Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name? ?EVENT-BODY?");
return JIM_ERR;
}
} else {
if (goi->argc != 0) {
Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-event ?event-name?");
return JIM_ERR;
}
}
{
jtag_tap_event_action_t *jteap;
jteap = tap->event_action;
/* replace existing? */
while (jteap) {
if (jteap->event == n->value) {
break;
}
jteap = jteap->next;
}
if (goi->isconfigure) {
if (jteap == NULL) {
/* create new */
jteap = calloc(1, sizeof (*jteap));
}
jteap->event = n->value;
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;
Jim_SetEmptyResult(goi->interp);
} else {
/* get */
if (jteap == NULL) {
Jim_SetEmptyResult(goi->interp);
} else {
Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, jteap->body));
}
}
}
/* loop for more */
break;
}
} /* while (goi->argc) */
return JIM_OK;
}
static int
jim_newtap_cmd( Jim_GetOptInfo *goi )
......@@ -1901,6 +2006,7 @@ 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;
enum {
......@@ -1909,7 +2015,9 @@ jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
JTAG_CMD_NEWTAP,
JTAG_CMD_TAPENABLE,
JTAG_CMD_TAPDISABLE,
JTAG_CMD_TAPISENABLED
JTAG_CMD_TAPISENABLED,
JTAG_CMD_CONFIGURE,
JTAG_CMD_CGET
};
const Jim_Nvp jtag_cmds[] = {
......@@ -1919,6 +2027,8 @@ jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
{ .name = "tapisenabled" , .value = JTAG_CMD_TAPISENABLED },
{ .name = "tapenable" , .value = JTAG_CMD_TAPENABLE },
{ .name = "tapdisable" , .value = JTAG_CMD_TAPDISABLE },
{ .name = "configure" , .value = JTAG_CMD_CONFIGURE },
{ .name = "cget" , .value = JTAG_CMD_CGET },
{ .name = NULL, .value = -1 },
};
......@@ -1977,10 +2087,12 @@ jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
// below
break;
case JTAG_CMD_TAPENABLE:
jtag_tap_handle_event( t, JTAG_TAP_EVENT_ENABLE);
e = 1;
t->enabled = e;
break;
case JTAG_CMD_TAPDISABLE:
jtag_tap_handle_event( t, JTAG_TAP_EVENT_DISABLE);
e = 0;
t->enabled = e;
break;
......@@ -1988,6 +2100,46 @@ jim_jtag_command( Jim_Interp *interp, int argc, Jim_Obj *const *argv )
Jim_SetResult( goi.interp, Jim_NewIntObj( goi.interp, e ) );
return JIM_OK;
}
break;
case JTAG_CMD_CGET:
if( goi.argc < 2 ){
Jim_WrongNumArgs( goi.interp, 0, NULL, "?tap-name? -option ...");
return JIM_ERR;
}
{
jtag_tap_t *t;
Jim_GetOpt_Obj(&goi, &o);
t = jtag_TapByJimObj( goi.interp, o );
if( t == NULL ){
return JIM_ERR;
}
goi.isconfigure = 0;
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? ...");
return JIM_ERR;
}
{
jtag_tap_t *t;
Jim_GetOpt_Obj(&goi, &o);
t = jtag_TapByJimObj( goi.interp, o );
if( t == NULL ){
return JIM_ERR;
}
goi.isconfigure = 1;
return jtag_tap_configure_cmd( &goi, t);
}
}
......@@ -2763,3 +2915,34 @@ int jtag_srst_asserted(int *srst_asserted)
return jtag->srst_asserted(srst_asserted);
}
void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e)
{
jtag_tap_event_action_t * jteap;
int done;
jteap = tap->event_action;
done = 0;
while (jteap) {
if (jteap->event == e) {
done = 1;
LOG_DEBUG( "JTAG tap: %s event: %d (%s) action: %s\n",
tap->dotted_name,
e,
Jim_Nvp_value2name_simple(nvp_jtag_tap_event, e)->name,
Jim_GetString(jteap->body, NULL) );
if (Jim_EvalObj(interp, jteap->body) != JIM_OK) {
Jim_PrintErrorMessage(interp);
}
}
jteap = jteap->next;
}
if (!done) {
LOG_DEBUG( "event %d %s - no action",
e,
Jim_Nvp_value2name_simple( nvp_jtag_tap_event, e)->name);
}
}
......@@ -158,6 +158,9 @@ typedef struct jtag_command_s
extern jtag_command_t *jtag_command_queue;
// forward declaration
typedef struct jtag_tap_event_action_s jtag_tap_event_action_t;
// this is really: typedef jtag_tap_t
// But - the typedef is done in "types.h"
// due to "forward decloration reasons"
......@@ -178,6 +181,9 @@ struct jtag_tap_s
u8 expected_ids_cnt;/* Number of expected identification codes */
u8 *cur_instr; /* current instruction */
int bypass; /* bypass register selected */
jtag_tap_event_action_t *event_action;
jtag_tap_t *next_tap;
};
extern jtag_tap_t *jtag_AllTaps(void);
......@@ -271,7 +277,21 @@ enum jtag_event
JTAG_TRST_ASSERTED
};
extern char* jtag_event_strings[];
extern char * jtag_event_strings[];
enum jtag_tap_event
{
JTAG_TAP_EVENT_ENABLE,
JTAG_TAP_EVENT_DISABLE
};
extern const Jim_Nvp nvp_jtag_tap_event[];
struct jtag_tap_event_action_s {
enum jtag_tap_event event;
Jim_Obj *body;
jtag_tap_event_action_t *next;
};
extern int jtag_trst;
extern int jtag_srst;
......@@ -462,6 +482,8 @@ extern int jtag_register_event_callback(int (*callback)(enum jtag_event event, v
extern int jtag_verify_capture_ir;
void jtag_tap_handle_event( jtag_tap_t * tap, enum jtag_tap_event e);
/* error codes
* JTAG subsystem uses codes between -100 and -199 */
......
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