const char* tapname;
const char* dotted_name;
int abs_chain_position;
- /// Is this TAP enabled?
- int enabled;
+ /// Is this TAP disabled after JTAG reset?
+ bool disabled_after_reset;
+ /// Is this TAP currently enabled?
+ bool enabled;
int ir_length; /**< size of instruction register */
u32 ir_capture_value;
u8* expected; /**< Capture-IR expected value */
jtag_tap_t* next_tap;
};
+
+void jtag_tap_init(jtag_tap_t *tap);
+void jtag_tap_free(jtag_tap_t *tap);
+
extern jtag_tap_t* jtag_all_taps(void);
extern const char *jtag_tap_name(const jtag_tap_t *tap);
extern jtag_tap_t* jtag_tap_by_string(const char* dotted_name);
extern jtag_tap_t* jtag_tap_by_jim_obj(Jim_Interp* interp, Jim_Obj* obj);
extern jtag_tap_t* jtag_tap_by_position(unsigned abs_position);
+extern jtag_tap_t* jtag_tap_next_enabled(jtag_tap_t* p);
extern unsigned jtag_tap_count_enabled(void);
extern unsigned jtag_tap_count(void);
-static __inline__ jtag_tap_t* jtag_tap_next_enabled(jtag_tap_t* p)
-{
- if (p == NULL)
- {
- /* start at the head of list */
- p = jtag_all_taps();
- }
- else
- {
- /* start *after* this one */
- p = p->next_tap;
- }
- while (p)
- {
- if (p->enabled)
- {
- break;
- }
- else
- {
- p = p->next_tap;
- }
- }
-
- return p;
-}
-
-
-enum reset_line_mode {
- LINE_OPEN_DRAIN = 0x0,
- LINE_PUSH_PULL = 0x1,
-};
-/*
+/*
* There are three cases when JTAG_TRST_ASSERTED callback is invoked. The
- * event is invoked *after* TRST is asserted(or queued rather). It is illegal
- * to communicate with the JTAG interface during the callback(as there is
+ * event is invoked *after* TRST is asserted(or queued rather). It is illegal
+ * to communicate with the JTAG interface during the callback(as there is
* currently a queue being built).
- *
+ *
* - TMS reset
* - SRST pulls TRST
* - TRST asserted
- *
+ *
**/
enum jtag_event {
JTAG_TRST_ASSERTED
jtag_tap_event_action_t* next;
};
-/// @returns The current state of TRST.
-int jtag_get_trst(void);
-/// @returns The current state of SRST.
-int jtag_get_srst(void);
-
/**
* Defines the function signature requide for JTAG event callback
* functions, which are added with jtag_register_event_callback()
typedef int (*jtag_event_handler_t)(enum jtag_event event, void* priv);
extern int jtag_register_event_callback(jtag_event_handler_t f, void *x);
-extern int jtag_unregister_event_callback(jtag_event_handler_t f);
+extern int jtag_unregister_event_callback(jtag_event_handler_t f, void *x);
extern int jtag_call_event_callbacks(enum jtag_event event);
int jtag_get_speed(void);
/**
* Given a @a speed setting, use the interface @c speed_div callback to
- * adjust the setting.
+ * adjust the setting.
* @param speed The speed setting to convert back to readable KHz.
* @returns ERROR_OK if the interface has not been initialized or on success;
* otherwise, the error code produced by the @c speed_div callback.
*/
int jtag_set_speed(int speed);
+
+/// Attempt to configure the interface for the specified KHz.
+int jtag_config_khz(unsigned khz);
+/// Set the clock speed of the JTAG interface in KHz.
+void jtag_set_speed_khz(unsigned speed);
+/// Retreives the clock speed of the JTAG interface in KHz.
+unsigned jtag_get_speed_khz(void);
+
+
enum reset_types {
RESET_NONE = 0x0,
RESET_HAS_TRST = 0x1,
enum reset_types jtag_get_reset_config(void);
void jtag_set_reset_config(enum reset_types type);
+void jtag_set_nsrst_delay(unsigned delay);
+unsigned jtag_get_nsrst_delay(void);
+
+void jtag_set_ntrst_delay(unsigned delay);
+unsigned jtag_get_ntrst_delay(void);
+
+/// @returns The current state of TRST.
+int jtag_get_trst(void);
+/// @returns The current state of SRST.
+int jtag_get_srst(void);
+
+/// Enable or disable data scan verification checking.
+void jtag_set_verify(bool enable);
+/// @returns True if data scan verification will be performed.
+bool jtag_will_verify(void);
+
+/// Enable or disable verification of IR scan checking.
+void jtag_set_verify_capture_ir(bool enable);
+/// @returns True if IR scan verification will be performed.
+bool jtag_will_verify_capture_ir(void);
+
/**
* Initialize interface upon startup. Return a successful no-op upon
* subsequent invocations.
* @param goal_state The final TAP state.
* @return ERROR_OK on success, or an error code on failure.
*
- * Moves from the current state to the goal \a state.
+ * Moves from the current state to the goal \a state.
*
* This needs to be handled according to the xsvf spec, see the XSTATE
* command description. From the XSVF spec, pertaining to XSTATE:
*/
extern int jtag_execute_queue(void);
-/* same as jtag_execute_queue() but does not clear the error flag */
+/// same as jtag_execute_queue() but does not clear the error flag
extern void jtag_execute_queue_noclear(void);
-/**
- * Set the current JTAG core execution error, unless one was set
- * by a previous call previously. Driver or application code must
- * use jtag_error_clear to reset jtag_error once this routine has been
- * called with a non-zero error code.
- */
-void jtag_set_error(int error);
-/// @returns The current value of jtag_error
-int jtag_get_error(void);
-/**
- * Resets jtag_error to ERROR_OK, returning its previous value.
- * @returns The previous value of @c jtag_error.
- */
-int jtag_error_clear(void);
+/// @returns the number of times the scan queue has been flushed
+int jtag_get_flush_queue_count(void);
+
/* can be implemented by hw+sw */
extern int jtag_power_dropout(int* dropout);
tap_state_t end_state);
-/// @returns the number of times the scan queue has been flushed
-int jtag_get_flush_queue_count(void);
-
-void jtag_set_nsrst_delay(unsigned delay);
-unsigned jtag_get_nsrst_delay(void);
-
-void jtag_set_ntrst_delay(unsigned delay);
-unsigned jtag_get_ntrst_delay(void);
-
-int jtag_config_khz(unsigned khz);
-void jtag_set_speed_khz(unsigned speed);
-unsigned jtag_get_speed_khz(void);
-
-void jtag_set_verify(bool enable);
-bool jtag_will_verify(void);
-
-void jtag_set_verify_capture_ir(bool enable);
-bool jtag_will_verify_capture_ir(void);
+/**
+ * Set the current JTAG core execution error, unless one was set
+ * by a previous call previously. Driver or application code must
+ * use jtag_error_clear to reset jtag_error once this routine has been
+ * called with a non-zero error code.
+ */
+void jtag_set_error(int error);
+/// @returns The current value of jtag_error
+int jtag_get_error(void);
+/**
+ * Resets jtag_error to ERROR_OK, returning its previous value.
+ * @returns The previous value of @c jtag_error.
+ */
+int jtag_error_clear(void);
#endif /* JTAG_H */