#include "types.h"
#include "binarybuffer.h"
+#include "log.h"
#include "command.h"
enum jtag_event
{
- JTAG_SRST_ASSERTED,
- JTAG_TRST_ASSERTED,
- JTAG_SRST_RELEASED,
- JTAG_TRST_RELEASED,
+ JTAG_TRST_ASSERTED
};
extern char* jtag_event_strings[];
extern enum tap_state cur_state;
extern int jtag_speed;
+extern int jtag_speed_post_reset;
enum reset_types
{
extern int jtag_register_commands(struct command_context_s *cmd_ctx);
/* JTAG interface, can be implemented with a software or hardware fifo */
-extern int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
+extern void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
extern int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
-extern int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
+extern void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
extern int interface_jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
-extern int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
+extern void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
extern int interface_jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
-extern int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
+extern void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
extern int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
/* execute a state transition within the JTAG standard, but the exact path
* path that is taken is undefined. Many implementations use precisely
*
* - Run-Test/Idle must not be entered unless requested, because R-T/I may have
* side effects.
+ *
+ * NB! a jtag_add_statemove() to the current state is not
+ * a no-operation.
*/
-extern int jtag_add_statemove(enum tap_state endstate);
+extern void jtag_add_statemove(enum tap_state endstate);
extern int interface_jtag_add_statemove(enum tap_state endstate);
/* A list of unambigious single clock state transitions, not
* all drivers can support this, but it is required for e.g.
* XScale and Xilinx support
*
* Note! TAP_TLR must not be used in the path!
+ *
+ * Note that the first on the list must be reachable
+ * via a single transition from the current state.
*/
-extern int jtag_add_pathmove(int num_states, enum tap_state *path);
+extern void jtag_add_pathmove(int num_states, enum tap_state *path);
extern int interface_jtag_add_pathmove(int num_states, enum tap_state *path);
-/* cycle precisely num_cycles in the TAP_RTI state */
-extern int jtag_add_runtest(int num_cycles, enum tap_state endstate);
+/* go to TAP_RTI, if we're not already there and cycle
+ * precisely num_cycles in the TAP_RTI after which move
+ * to the end state, if it is != TAP_RTI
+ */
+extern void jtag_add_runtest(int num_cycles, enum tap_state endstate);
extern int interface_jtag_add_runtest(int num_cycles, enum tap_state endstate);
+/* If it fails and one of the error messages below are returned, nothing is
+ * added to the queue and jtag_execute() won't return an error code.
+ *
+ * ERROR_JTAG_RESET_WOULD_ASSERT_TRST
+ * ERROR_JTAG_RESET_CANT_SRST
+ *
+ * All other error codes will result in jtag_execute_queue() returning
+ * an error.
+ */
extern int jtag_add_reset(int trst, int srst);
extern int interface_jtag_add_reset(int trst, int srst);
-extern int jtag_add_end_state(enum tap_state endstate);
+extern void jtag_add_end_state(enum tap_state endstate);
extern int interface_jtag_add_end_state(enum tap_state endstate);
-extern int jtag_add_sleep(u32 us);
+extern void jtag_add_sleep(u32 us);
extern int interface_jtag_add_sleep(u32 us);
+
+
+
/*
* For software FIFO implementations, the queued commands can be executed
* during this call or earlier. A sw queue might decide to push out
extern int jtag_verify_capture_ir;
-
/* error codes
* JTAG subsystem uses codes between -100 and -199 */
#define ERROR_JTAG_DEVICE_ERROR (-107)
+
+/* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */
+#ifdef HAVE_JTAG_MINIDRIVER_H
+/* Here a #define MINIDRIVER() and an inline version of hw fifo interface_jtag_add_dr_out can be defined */
+#include "jtag_minidriver.h"
+#define MINIDRIVER(a) notused ## a
+#else
+#define MINIDRIVER(a) a
+/* jtag_add_dr_out() is a faster version of jtag_add_dr_scan()
+ *
+ * Current or end_state can not be TAP_TLR. end_state can be -1
+ *
+ * num_bits[i] is the number of bits to clock out from value[i] LSB first.
+ *
+ * If the device is in bypass, then that is an error condition in
+ * the caller code that is not detected by this fn, whereas jtag_add_dr_scan()
+ * does detect it. Similarly if the device is not in bypass, data must
+ * be passed to it.
+ *
+ * If anything fails, then jtag_error will be set and jtag_execute() will
+ * return an error. There is no way to determine if there was a failure
+ * during this function call.
+ *
+ * Note that this jtag_add_dr_out can be defined as an inline function.
+ */
+extern void interface_jtag_add_dr_out(int device,
+ int num_fields,
+ int *num_bits,
+ u32 *value,
+ enum tap_state end_state);
+#endif
+
+
+
+
+static __inline__ void jtag_add_dr_out(int device,
+ int num_fields,
+ int *num_bits,
+ u32 *value,
+ enum tap_state end_state)
+{
+ if (end_state != -1)
+ cmd_queue_end_state=end_state;
+ cmd_queue_cur_state=cmd_queue_end_state;
+ interface_jtag_add_dr_out(device, num_fields, num_bits, value, cmd_queue_end_state);
+}
+
+
#endif /* JTAG_H */
projects / fw / openocd / blobdiff