* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
-* Copyright (C) 2007,2008 Øyvind Harboe *
+* Copyright (C) 2007-2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
#ifndef JTAG_H
#define JTAG_H
-#include "binarybuffer.h"
-#include "log.h"
-
+#include <helper/binarybuffer.h>
+#include <helper/log.h>
#ifdef _DEBUG_JTAG_IO_
-#define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr)
+#define DEBUG_JTAG_IO(expr ...) \
+ do { if (1) LOG_DEBUG(expr); } while (0)
#else
-#define DEBUG_JTAG_IO(expr ...)
+#define DEBUG_JTAG_IO(expr ...) \
+ do { if (0) LOG_DEBUG(expr); } while (0)
#endif
#ifndef DEBUG_JTAG_IOZ
#define DEBUG_JTAG_IOZ 64
#endif
-/*-----<Macros>--------------------------------------------------*/
-
-/**
- * When given an array, compute its DIMension; in other words, the
- * number of elements in the array
- */
-#define DIM(x) (sizeof(x)/sizeof((x)[0]))
-
-/** Calculate the number of bytes required to hold @a n TAP scan bits */
-#define TAP_SCAN_BYTES(n) CEIL(n, 8)
-
/*-----</Macros>-------------------------------------------------*/
/**
*
* These definitions were gleaned from the ARM7TDMI-S Technical
* Reference Manual and validated against several other ARM core
- * technical manuals. tap_get_tms_path() is sensitive to this numbering
- * and ordering of the TAP states; furthermore, some interfaces require
- * specific numbers be used, as they are handed-off directly to their
- * hardware implementations.
+ * technical manuals.
+ *
+ * FIXME some interfaces require specific numbers be used, as they
+ * are handed-off directly to their hardware implementations.
+ * Fix those drivers to map as appropriate ... then pick some
+ * sane set of numbers here (where 0/uninitialized == INVALID).
*/
typedef enum tap_state
{
-#if BUILD_ECOSBOARD
+ TAP_INVALID = -1,
+
+#if BUILD_ZY1000
/* These are the old numbers. Leave as-is for now... */
TAP_RESET = 0, TAP_IDLE = 8,
TAP_DRSELECT = 1, TAP_DRCAPTURE = 2, TAP_DRSHIFT = 3, TAP_DREXIT1 = 4,
TAP_IRSELECT = 9, TAP_IRCAPTURE = 10, TAP_IRSHIFT = 11, TAP_IREXIT1 = 12,
TAP_IRPAUSE = 13, TAP_IREXIT2 = 14, TAP_IRUPDATE = 15,
- TAP_NUM_STATES = 16, TAP_INVALID = -1,
#else
/* Proper ARM recommended numbers */
TAP_DREXIT2 = 0x0,
TAP_IRCAPTURE = 0xe,
TAP_RESET = 0x0f,
- TAP_NUM_STATES = 0x10,
-
- TAP_INVALID = -1,
#endif
} tap_state_t;
* Function tap_state_name
* Returns a string suitable for display representing the JTAG tap_state
*/
-const char* tap_state_name(tap_state_t state);
+const char *tap_state_name(tap_state_t state);
+
+/// Provides user-friendly name lookup of TAP states.
+tap_state_t tap_state_by_name(const char *name);
/// The current TAP state of the pending JTAG command queue.
extern tap_state_t cmd_queue_cur_state;
*
* The allocated, modified, and intmp fields are internal work space.
*/
-typedef struct scan_field_s
-{
- /// A pointer to the tap structure to which this field refers.
- jtag_tap_t* tap;
-
+struct scan_field {
/// The number of bits this field specifies (up to 32)
int num_bits;
/// A pointer to value to be scanned into the device
- u8* out_value;
+ const uint8_t* out_value;
/// A pointer to a 32-bit memory location for data scanned out
- u8* in_value;
+ uint8_t* in_value;
/// The value used to check the data scanned out.
- u8* check_value;
+ uint8_t* check_value;
/// The mask to go with check_value
- u8* check_mask;
+ uint8_t* check_mask;
/// in_value has been allocated for the queue
int allocated;
/// Indicates we modified the in_value.
int modified;
/// temporary storage for performing value checks synchronously
- u8 intmp[4];
-} scan_field_t;
-
-typedef struct jtag_tap_event_action_s jtag_tap_event_action_t;
+ uint8_t intmp[4];
+};
-/* this is really: typedef jtag_tap_t */
-/* But - the typedef is done in "types.h" */
-/* due to "forward decloration reasons" */
-struct jtag_tap_s
-{
+struct jtag_tap {
const char* chip;
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 */
- u32 ir_capture_mask;
- u8* expected_mask; /**< Capture-IR expected mask */
- u32 idcode;
- /**< device identification code */
+ uint32_t ir_capture_value;
+ uint8_t* expected; /**< Capture-IR expected value */
+ uint32_t ir_capture_mask;
+ uint8_t* expected_mask; /**< Capture-IR expected mask */
+ uint32_t idcode; /**< device identification code */
+ /** not all devices have idcode,
+ * we'll discover this during chain examination */
+ bool hasidcode;
/// Array of expected identification codes */
- u32* expected_ids;
+ uint32_t* expected_ids;
/// Number of expected identification codes
- u8 expected_ids_cnt;
+ uint8_t expected_ids_cnt;
+
+ /// Flag saying whether to ignore version field in expected_ids[]
+ bool ignore_version;
/// current instruction
- u8* cur_instr;
+ uint8_t* cur_instr;
/// Bypass register selected
int bypass;
- jtag_tap_event_action_t *event_action;
+ struct jtag_tap_event_action *event_action;
- jtag_tap_t* next_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);
-
-
-/*
- * 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
- * currently a queue being built).
- *
- * - TMS reset
- * - SRST pulls TRST
- * - TRST asserted
- *
- **/
-enum jtag_event {
- JTAG_TRST_ASSERTED
+ struct jtag_tap* next_tap;
};
-enum jtag_tap_event {
+void jtag_tap_init(struct jtag_tap *tap);
+void jtag_tap_free(struct jtag_tap *tap);
+
+struct jtag_tap* jtag_all_taps(void);
+const char *jtag_tap_name(const struct jtag_tap *tap);
+struct jtag_tap* jtag_tap_by_string(const char* dotted_name);
+struct jtag_tap* jtag_tap_by_jim_obj(Jim_Interp* interp, Jim_Obj* obj);
+struct jtag_tap* jtag_tap_next_enabled(struct jtag_tap* p);
+unsigned jtag_tap_count_enabled(void);
+unsigned jtag_tap_count(void);
+
+
+/*
+ * - TRST_ASSERTED triggers two sets of callbacks, after operations to
+ * reset the scan chain -- via TMS+TCK signaling, or deasserting the
+ * nTRST signal -- are queued:
+ *
+ * + Callbacks in C code fire first, patching internal state
+ * + Then post-reset event scripts fire ... activating JTAG circuits
+ * via TCK cycles, exiting SWD mode via TMS sequences, etc
+ *
+ * During those callbacks, scan chain contents have not been validated.
+ * JTAG operations that address a specific TAP (primarily DR/IR scans)
+ * must *not* be queued.
+ *
+ * - TAP_EVENT_SETUP is reported after TRST_ASSERTED, and after the scan
+ * chain has been validated. JTAG operations including scans that
+ * target specific TAPs may be performed.
+ *
+ * - TAP_EVENT_ENABLE and TAP_EVENT_DISABLE implement TAP activation and
+ * deactivation outside the core using scripted code that understands
+ * the specific JTAG router type. They might be triggered indirectly
+ * from EVENT_SETUP operations.
+ */
+enum jtag_event {
+ JTAG_TRST_ASSERTED,
+ JTAG_TAP_EVENT_SETUP,
JTAG_TAP_EVENT_ENABLE,
- JTAG_TAP_EVENT_DISABLE
+ JTAG_TAP_EVENT_DISABLE,
};
-struct jtag_tap_event_action_s
+struct jtag_tap_event_action
{
- enum jtag_tap_event event;
- Jim_Obj* body;
- jtag_tap_event_action_t* next;
+ /// The event for which this action will be triggered.
+ enum jtag_event event;
+ /// The interpreter to use for evaluating the @c body.
+ Jim_Interp *interp;
+ /// Contains a script to 'eval' when the @c event is triggered.
+ Jim_Obj *body;
+ // next action in linked list
+ struct jtag_tap_event_action *next;
};
/**
*/
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);
+int jtag_register_event_callback(jtag_event_handler_t f, void *x);
+int jtag_unregister_event_callback(jtag_event_handler_t f, void *x);
-extern int jtag_call_event_callbacks(enum jtag_event event);
+int jtag_call_event_callbacks(enum jtag_event event);
/// @returns The current JTAG speed setting.
-int jtag_get_speed(void);
+int jtag_get_speed(int *speed);
+
/**
* 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.
+ * otherwise, the error code produced by the @c speed_div callback.
*/
int jtag_get_speed_readable(int *speed);
+
+/// Attempt to configure the interface for the specified KHz.
+int jtag_config_khz(unsigned khz);
+
/**
- * Set the JTAG speed. This routine will call the underlying
- * interface @c speed callback, if the interface has been initialized.
- * @param speed The new speed setting.
- * @returns ERROR_OK during configuration or on success, or an error
- * code returned from the interface @c speed callback.
+ * Attempt to enable RTCK/RCLK. If that fails, fallback to the
+ * specified frequency.
*/
-int jtag_set_speed(int speed);
+int jtag_config_rclk(unsigned fallback_speed_khz);
+
+/// Retreives the clock speed of the JTAG interface in KHz.
+unsigned jtag_get_speed_khz(void);
+
enum reset_types {
RESET_NONE = 0x0,
RESET_TRST_PULLS_SRST = 0x8,
RESET_TRST_OPEN_DRAIN = 0x10,
RESET_SRST_PUSH_PULL = 0x20,
+ RESET_SRST_NO_GATING = 0x40,
};
enum reset_types jtag_get_reset_config(void);
void jtag_set_ntrst_delay(unsigned delay);
unsigned jtag_get_ntrst_delay(void);
+void jtag_set_nsrst_assert_width(unsigned delay);
+unsigned jtag_get_nsrst_assert_width(void);
+
+void jtag_set_ntrst_assert_width(unsigned delay);
+unsigned jtag_get_ntrst_assert_width(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 debug adapter upon startup. */
+int adapter_init(struct command_context* cmd_ctx);
-/**
- * Initialize interface upon startup. Return a successful no-op upon
- * subsequent invocations.
- */
-extern int jtag_interface_init(struct command_context_s* cmd_ctx);
+/// Shutdown the debug adapter upon program exit.
+int adapter_quit(void);
-/// Shutdown the JTAG interface upon program exit.
-extern int jtag_interface_quit(void);
+/// Set ms to sleep after jtag_execute_queue() flushes queue. Debug
+/// purposes.
+void jtag_set_flush_queue_sleep(int ms);
/**
* Initialize JTAG chain using only a RESET reset. If init fails,
* try reset + init.
*/
-extern int jtag_init(struct command_context_s* cmd_ctx);
+int jtag_init(struct command_context* cmd_ctx);
/// reset, then initialize JTAG chain
-extern int jtag_init_reset(struct command_context_s* cmd_ctx);
-extern int jtag_register_commands(struct command_context_s* cmd_ctx);
+int jtag_init_reset(struct command_context* cmd_ctx);
+int jtag_register_commands(struct command_context* cmd_ctx);
+int jtag_init_inner(struct command_context *cmd_ctx);
/**
* @file
* subsequent DR SCANs.
*
*/
-extern void jtag_add_ir_scan(int num_fields, scan_field_t* fields, tap_state_t endstate);
+void jtag_add_ir_scan(struct jtag_tap* tap,
+ struct scan_field* fields, tap_state_t endstate);
/**
* The same as jtag_add_ir_scan except no verification is performed out
* the output values.
*/
-extern void jtag_add_ir_scan_noverify(int num_fields, const scan_field_t *fields, tap_state_t state);
+void jtag_add_ir_scan_noverify(struct jtag_tap* tap,
+ const struct scan_field *fields, tap_state_t state);
/**
- * Duplicate the scan fields passed into the function into an IR SCAN
- * command. This function assumes that the caller handles extra fields
- * for bypassed TAPs.
+ * Scan out the bits in ir scan mode.
+ *
+ * If in_bits == NULL, discard incoming bits.
*/
-extern void jtag_add_plain_ir_scan(int num_fields, const scan_field_t* fields, tap_state_t endstate);
+void jtag_add_plain_ir_scan(int num_bits, const uint8_t *out_bits, uint8_t *in_bits,
+ tap_state_t endstate);
/**
* allocation method is used, for the synchronous case the temporary 32
* bits come from the input field itself.
*/
-extern void jtag_alloc_in_value32(scan_field_t *field);
+void jtag_alloc_in_value32(struct scan_field *field);
/**
* Generate a DR SCAN using the fields passed to the function.
* specified there. For bypassed TAPs, the function generates a dummy
* 1-bit field. The bypass status of TAPs is set by jtag_add_ir_scan().
*/
-extern void jtag_add_dr_scan(int num_fields, const scan_field_t* fields, tap_state_t endstate);
+void jtag_add_dr_scan(struct jtag_tap* tap, int num_fields,
+ const struct scan_field* fields, tap_state_t endstate);
/// A version of jtag_add_dr_scan() that uses the check_value/mask fields
-extern void jtag_add_dr_scan_check(int num_fields, scan_field_t* fields, tap_state_t endstate);
+void jtag_add_dr_scan_check(struct jtag_tap* tap, int num_fields,
+ struct scan_field* fields, tap_state_t endstate);
/**
- * Duplicate the scan fields passed into the function into a DR SCAN
- * command. Unlike jtag_add_dr_scan(), this function assumes that the
- * caller handles extra fields for bypassed TAPs.
+ * Scan out the bits in ir scan mode.
+ *
+ * If in_bits == NULL, discard incoming bits.
*/
-extern void jtag_add_plain_dr_scan(int num_fields, const scan_field_t* fields, tap_state_t endstate);
+void jtag_add_plain_dr_scan(int num_bits,
+ const uint8_t *out_bits, uint8_t *in_bits, tap_state_t endstate);
+/**
+ * Defines the type of data passed to the jtag_callback_t interface.
+ * The underlying type must allow storing an @c int or pointer type.
+ */
+typedef intptr_t jtag_callback_data_t;
/**
* Defines a simple JTAG callback that can allow conversions on data
* For conversion types or checks that can fail, use the more complete
* variant: jtag_callback_t.
*/
-typedef void (*jtag_callback1_t)(u8 *in);
+typedef void (*jtag_callback1_t)(jtag_callback_data_t data0);
/// A simpler version of jtag_add_callback4().
-extern void jtag_add_callback(jtag_callback1_t, u8 *in);
-
-
-/**
- * Defines the type of data passed to the jtag_callback_t interface.
- * The underlying type must allow storing an @c int or pointer type.
- */
-typedef intptr_t jtag_callback_data_t;
-
-/**
- * Defines the interface of the JTAG callback mechanism.
- *
- * @param in the pointer to the data clocked in
- * @param data1 An integer big enough to use as an @c int or a pointer.
- * @param data2 An integer big enough to use as an @c int or a pointer.
- * @param data3 An integer big enough to use as an @c int or a pointer.
- * @returns an error code
- */
-typedef int (*jtag_callback_t)(u8 *in, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3);
+void jtag_add_callback(jtag_callback1_t, jtag_callback_data_t data0);
/**
- * This callback can be executed immediately the queue has been flushed.
+ * Defines the interface of the JTAG callback mechanism. Such
+ * callbacks can be executed once the queue has been flushed.
*
* The JTAG queue can be executed synchronously or asynchronously.
* Typically for USB, the queue is executed asynchronously. For
*
* If the execution of the queue fails before the callbacks, then --
* depending on driver implementation -- the callbacks may or may not be
- * invoked. @todo Can we make this behavior consistent?
+ * invoked.
*
- * The strange name is due to C's lack of overloading using function
- * arguments.
+ * @todo Make that behavior consistent.
*
- * @param f The callback function to add.
- * @param in Typically used to point to the data to operate on.
+ * @param data0 Typically used to point to the data to operate on.
* Frequently this will be the data clocked in during a shift operation.
* @param data1 An integer big enough to use as an @c int or a pointer.
* @param data2 An integer big enough to use as an @c int or a pointer.
* @param data3 An integer big enough to use as an @c int or a pointer.
- *
+ * @returns an error code
*/
-extern void jtag_add_callback4(jtag_callback_t f, u8 *in,
- jtag_callback_data_t data1, jtag_callback_data_t data2,
- jtag_callback_data_t data3);
-
+typedef int (*jtag_callback_t)(jtag_callback_data_t data0,
+ jtag_callback_data_t data1,
+ jtag_callback_data_t data2,
+ jtag_callback_data_t data3);
/**
* Run a TAP_RESET reset where the end state is TAP_RESET,
* regardless of the start state.
*/
-extern void jtag_add_tlr(void);
+void jtag_add_tlr(void);
/**
* Application code *must* assume that interfaces will
* - ERROR_JTAG_TRANSITION_INVALID -- The path includes invalid
* state transitions.
*/
-extern void jtag_add_pathmove(int num_states, const tap_state_t* path);
+void jtag_add_pathmove(int num_states, const tap_state_t* path);
/**
* jtag_add_statemove() moves from the current state to @a goal_state.
* @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.
- *
- * This needs to be handled according to the xsvf spec, see the XSTATE
- * command description. From the XSVF spec, pertaining to XSTATE:
- *
- * For special states known as stable states (Test-Logic-Reset,
- * Run-Test/Idle, Pause-DR, Pause- IR), an XSVF interpreter follows
- * predefined TAP state paths when the starting state is a stable state
- * and when the XSTATE specifies a new stable state. See the STATE
- * command in the [Ref 5] for the TAP state paths between stable
- * states.
- *
- * For non-stable states, XSTATE should specify a state that is only one
- * TAP state transition distance from the current TAP state to avoid
- * undefined TAP state paths. A sequence of multiple XSTATE commands can
- * be issued to transition the TAP through a specific state path.
- *
- * @note Unless @c tms_bits holds a path that agrees with [Ref 5] in the
- * above spec, then this code is not fully conformant to the xsvf spec.
- * This puts a burden on tap_get_tms_path() function from the xsvf spec.
- * If in doubt, you should confirm that that burden is being met.
- *
- * Otherwise, @a goal_state must be immediately reachable in one clock
- * cycle, and does not need to be a stable state.
+ * Moves from the current state to the goal \a state.
+ * Both states must be stable.
*/
-extern int jtag_add_statemove(tap_state_t goal_state);
+int jtag_add_statemove(tap_state_t goal_state);
/**
* Goes to TAP_IDLE (if we're not already there), cycle
* to @a endstate (unless it is also TAP_IDLE).
*
* @param num_cycles Number of cycles in TAP_IDLE state. This argument
- * may be 0, in which case this routine will navigate to @a endstate
- * via TAP_IDLE.
+ * may be 0, in which case this routine will navigate to @a endstate
+ * via TAP_IDLE.
* @param endstate The final state.
*/
-extern void jtag_add_runtest(int num_cycles, tap_state_t endstate);
+void jtag_add_runtest(int num_cycles, tap_state_t endstate);
/**
* A reset of the TAP state machine can be requested.
* are undefined, but when srst_pulls_trst or vice versa,
* then trst & srst *must* be asserted together.
*/
-extern void jtag_add_reset(int req_tlr_or_trst, int srst);
+void jtag_add_reset(int req_tlr_or_trst, int srst);
+void jtag_add_sleep(uint32_t us);
-/**
- * Function jtag_set_end_state
- *
- * Set a global variable to \a state if \a state != TAP_INVALID.
- *
- * Return the value of the global variable.
- *
- **/
-extern tap_state_t jtag_set_end_state(tap_state_t state);
-/**
- * Function jtag_get_end_state
- *
- * Return the value of the global variable for end state
- *
- **/
-extern tap_state_t jtag_get_end_state(void);
-extern void jtag_add_sleep(u32 us);
-
+int jtag_add_tms_seq(unsigned nbits, const uint8_t *seq, enum tap_state t);
/**
- * Function jtag_add_stable_clocks
+ * Function jtag_add_clocks
* first checks that the state in which the clocks are to be issued is
- * stable, then queues up clock_count clocks for transmission.
+ * stable, then queues up num_cycles clocks for transmission.
*/
void jtag_add_clocks(int num_cycles);
* matter if the operation was executed *before* jtag_execute_queue(),
* jtag_execute_queue() will still return an error code.
*
- * All jtag_add_xxx() calls that have in_handler!=NULL will have been
+ * All jtag_add_xxx() calls that have in_handler != NULL will have been
* executed when this fn returns, but if what has been queued only
* clocks data out, without reading anything back, then JTAG could
* be running *after* jtag_execute_queue() returns. The API does
* jtag_add_xxx() commands can either be executed immediately or
* at some time between the jtag_add_xxx() fn call and jtag_execute_queue().
*/
-extern int jtag_execute_queue(void);
+int jtag_execute_queue(void);
-/* same as jtag_execute_queue() but does not clear the error flag */
-extern void jtag_execute_queue_noclear(void);
+/// same as jtag_execute_queue() but does not clear the error flag
+void jtag_execute_queue_noclear(void);
-/* can be implemented by hw+sw */
-extern int jtag_power_dropout(int* dropout);
-extern int jtag_srst_asserted(int* srst_asserted);
+/// @returns the number of times the scan queue has been flushed
+int jtag_get_flush_queue_count(void);
+
+/// Report Tcl event to all TAPs
+void jtag_notify_event(enum jtag_event);
+
+
+/* can be implemented by hw + sw */
+int jtag_power_dropout(int* dropout);
+int jtag_srst_asserted(int* srst_asserted);
/* JTAG support functions */
* @param mask Pointer to scan mask; may be NULL.
* @returns Nothing, but calls jtag_set_error() on any error.
*/
-extern void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask);
+void jtag_check_value_mask(struct scan_field *field, uint8_t *value, uint8_t *mask);
-extern void jtag_sleep(u32 us);
+void jtag_sleep(uint32_t us);
/*
* The JTAG subsystem defines a number of error codes,
#define ERROR_JTAG_DEVICE_ERROR (-107)
#define ERROR_JTAG_STATE_INVALID (-108)
#define ERROR_JTAG_TRANSITION_INVALID (-109)
+#define ERROR_JTAG_INIT_SOFT_FAIL (-110)
/**
* jtag_add_dr_out() is a version of jtag_add_dr_scan() which
* There is no jtag_add_dr_outin() version of this fn that also allows
* clocking data back in. Patches gladly accepted!
*/
-extern void jtag_add_dr_out(jtag_tap_t* tap,
- int num_fields, const int* num_bits, const u32* value,
- tap_state_t end_state);
-
-
-/// @returns the number of times the scan queue has been flushed
-int jtag_get_flush_queue_count(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
* 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);
+/**
+ * Return true if it's safe for a background polling task to access the
+ * JTAG scan chain. Polling may be explicitly disallowed, and is also
+ * unsafe while nTRST is active or the JTAG clock is gated off.
+ */
+bool is_jtag_poll_safe(void);
+
+/**
+ * Return flag reporting whether JTAG polling is disallowed.
+ */
+bool jtag_poll_get_enabled(void);
+
+/**
+ * Assign flag reporting whether JTAG polling is disallowed.
+ */
+void jtag_poll_set_enabled(bool value);
+
+
+/* The minidriver may have inline versions of some of the low
+ * level APIs that are used in inner loops. */
+#include <jtag/minidriver.h>
+
+bool transport_is_jtag(void);
+
+int jim_jtag_newtap(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
+
#endif /* JTAG_H */
projects / fw / openocd / blobdiff