* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
+
#ifndef JTAG_COMMANDS_H
#define JTAG_COMMANDS_H
-#include "jtag.h"
-
/**
* The inferred type of a scan_command_s structure, indicating whether
* the command has the host scan in from the device, the host scan out
* to the device, or both.
*/
enum scan_type {
- /// From device to host,
+ /** From device to host, */
SCAN_IN = 1,
- /// From host to device,
+ /** From host to device, */
SCAN_OUT = 2,
- /// Full-duplex scan.
+ /** Full-duplex scan. */
SCAN_IO = 3
};
* structures that should be scanned in/out to the device.
*/
struct scan_command {
- /// instruction/not data scan
+ /** instruction/not data scan */
bool ir_scan;
- /// number of fields in *fields array
+ /** number of fields in *fields array */
int num_fields;
- /// pointer to an array of data scan fields
- struct scan_field* fields;
- /// state in which JTAG commands should finish
+ /** pointer to an array of data scan fields */
+ struct scan_field *fields;
+ /** state in which JTAG commands should finish */
tap_state_t end_state;
};
struct statemove_command {
- /// state in which JTAG commands should finish
+ /** state in which JTAG commands should finish */
tap_state_t end_state;
};
struct pathmove_command {
- /// number of states in *path
+ /** number of states in *path */
int num_states;
- /// states that have to be passed
- tap_state_t* path;
+ /** states that have to be passed */
+ tap_state_t *path;
};
struct runtest_command {
- /// number of cycles to spend in Run-Test/Idle state
+ /** number of cycles to spend in Run-Test/Idle state */
int num_cycles;
- /// state in which JTAG commands should finish
+ /** state in which JTAG commands should finish */
tap_state_t end_state;
};
struct stableclocks_command {
- /// number of clock cycles that should be sent
+ /** number of clock cycles that should be sent */
int num_cycles;
};
struct reset_command {
- /// Set TRST output: 0 = deassert, 1 = assert, -1 = no change
+ /** Set TRST output: 0 = deassert, 1 = assert, -1 = no change */
int trst;
- /// Set SRST output: 0 = deassert, 1 = assert, -1 = no change
+ /** Set SRST output: 0 = deassert, 1 = assert, -1 = no change */
int srst;
};
struct end_state_command {
- /// state in which JTAG commands should finish
+ /** state in which JTAG commands should finish */
tap_state_t end_state;
};
-typedef struct sleep_command_s
-{
- /// number of microseconds to sleep
+struct sleep_command {
+ /** number of microseconds to sleep */
uint32_t us;
-} sleep_command_t;
+};
+
+/**
+ * Encapsulates a series of bits to be clocked out, affecting state
+ * and mode of the interface.
+ *
+ * In JTAG mode these are clocked out on TMS, using TCK. They may be
+ * used for link resets, transitioning between JTAG and SWD modes, or
+ * to implement JTAG state machine transitions (implementing pathmove
+ * or statemove operations).
+ *
+ * In SWD mode these are clocked out on SWDIO, using SWCLK, and are
+ * used for link resets and transitioning between SWD and JTAG modes.
+ */
+struct tms_command {
+ /** How many bits should be clocked out. */
+ unsigned num_bits;
+ /** The bits to clock out; the LSB is bit 0 of bits[0]. */
+ const uint8_t *bits;
+};
/**
* Defines a container type that hold a pointer to a JTAG command
* structure of any defined type.
*/
-typedef union jtag_command_container_u
-{
- struct scan_command* scan;
- struct statemove_command* statemove;
- struct pathmove_command* pathmove;
- struct runtest_command* runtest;
- struct stableclocks_command* stableclocks;
- struct reset_command* reset;
- struct end_state_command* end_state;
- sleep_command_t* sleep;
-} jtag_command_container_t;
+union jtag_command_container {
+ struct scan_command *scan;
+ struct statemove_command *statemove;
+ struct pathmove_command *pathmove;
+ struct runtest_command *runtest;
+ struct stableclocks_command *stableclocks;
+ struct reset_command *reset;
+ struct end_state_command *end_state;
+ struct sleep_command *sleep;
+ struct tms_command *tms;
+};
/**
- * The type of the @c jtag_command_container_u contained by a
+ * The type of the @c jtag_command_container contained by a
* @c jtag_command_s structure.
*/
enum jtag_command_type {
JTAG_SCAN = 1,
- JTAG_STATEMOVE = 2,
+ /* JTAG_TLR_RESET's non-minidriver implementation is a
+ * vestige from a statemove cmd. The statemove command
+ * is obsolete and replaced by pathmove.
+ *
+ * pathmove does not support reset as one of it's states,
+ * hence the need for an explicit statemove command.
+ */
+ JTAG_TLR_RESET = 2,
JTAG_RUNTEST = 3,
JTAG_RESET = 4,
JTAG_PATHMOVE = 6,
JTAG_SLEEP = 7,
- JTAG_STABLECLOCKS = 8
+ JTAG_STABLECLOCKS = 8,
+ JTAG_TMS = 9,
};
-typedef struct jtag_command_s
-{
- jtag_command_container_t cmd;
- enum jtag_command_type type;
- struct jtag_command_s* next;
-} jtag_command_t;
+struct jtag_command {
+ union jtag_command_container cmd;
+ enum jtag_command_type type;
+ struct jtag_command *next;
+};
-/// The current queue of jtag_command_s structures.
-extern jtag_command_t* jtag_command_queue;
+/** The current queue of jtag_command_s structures. */
+extern struct jtag_command *jtag_command_queue;
-void* cmd_queue_alloc(size_t size);
-void cmd_queue_free(void);
+void *cmd_queue_alloc(size_t size);
-void jtag_queue_command(jtag_command_t *cmd);
+void jtag_queue_command(struct jtag_command *cmd);
void jtag_command_queue_reset(void);
-enum scan_type jtag_scan_type(const struct scan_command* cmd);
-int jtag_scan_size(const struct scan_command* cmd);
-int jtag_read_buffer(uint8_t* buffer, const struct scan_command* cmd);
-int jtag_build_buffer(const struct scan_command* cmd, uint8_t** buffer);
+enum scan_type jtag_scan_type(const struct scan_command *cmd);
+int jtag_scan_size(const struct scan_command *cmd);
+int jtag_read_buffer(uint8_t *buffer, const struct scan_command *cmd);
+int jtag_build_buffer(const struct scan_command *cmd, uint8_t **buffer);
-#endif // JTAG_COMMANDS_H
+#endif /* JTAG_COMMANDS_H */
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