commands.h

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
/***************************************************************************
 *   Copyright (C) 2005 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
 *   oyvind.harboe@zylin.com                                               *
 *                                                                         *
 *   Copyright (C) 2009 Zachary T Welch                                    *
 *   zw@superlucidity.net                                                  *
 ***************************************************************************/
 
#ifndef OPENOCD_JTAG_COMMANDS_H
#define OPENOCD_JTAG_COMMANDS_H
 
enum scan_type {
    SCAN_IN = 1,
    SCAN_OUT = 2,
    SCAN_IO = 3
};
 
struct scan_command {
    bool ir_scan;
    int num_fields;
    struct scan_field *fields;
    tap_state_t end_state;
};
 
struct statemove_command {
    tap_state_t end_state;
};
 
struct pathmove_command {
    int num_states;
    tap_state_t *path;
};
 
struct runtest_command {
    int num_cycles;
    tap_state_t end_state;
};
 
 
struct stableclocks_command {
    int num_cycles;
};
 
 
struct reset_command {
    int trst;
    int srst;
};
 
struct end_state_command {
    tap_state_t end_state;
};
 
struct sleep_command {
    uint32_t us;
};
 
struct tms_command {
    unsigned num_bits;
    const uint8_t *bits;
};
 
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;
};
 
enum jtag_command_type {
    JTAG_SCAN         = 1,
    /* 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     * is obsolete and replaced by pathmove.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_TMS          = 9,
};
 
struct jtag_command {
    union jtag_command_container cmd;
    enum jtag_command_type type;
    struct jtag_command *next;
};
 
extern struct jtag_command *jtag_command_queue;
 
void *cmd_queue_alloc(size_t size);
 
void jtag_queue_command(struct jtag_command *cmd);
void jtag_command_queue_reset(void);
 
void jtag_scan_field_clone(struct scan_field *dst, const struct scan_field *src);
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 /* OPENOCD_JTAG_COMMANDS_H */