arm_jtag.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) 2007-2010 Øyvind Harboe                                 *
 *   oyvind.harboe@zylin.com                                               *
 ***************************************************************************/
 
#ifndef OPENOCD_TARGET_ARM_JTAG_H
#define OPENOCD_TARGET_ARM_JTAG_H
 
#include <jtag/jtag.h>
#include <helper/bits.h>
 
struct arm_jtag {
    struct jtag_tap *tap;
 
    uint32_t scann_size;
    uint32_t scann_instr;
    uint32_t cur_scan_chain;
 
    uint32_t intest_instr;
};
 
int arm_jtag_set_instr_inner(struct jtag_tap *tap, uint32_t new_instr,
        void *no_verify_capture,
        tap_state_t end_state);
 
static inline int arm_jtag_set_instr(struct jtag_tap *tap,
        uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
{
    /* inline most common code path */
    if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != (new_instr & (BIT(tap->ir_length) - 1)))
        return arm_jtag_set_instr_inner(tap, new_instr, no_verify_capture, end_state);
 
    return ERROR_OK;
 
}
 
int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state);
static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
{
    /* inline most common code path */
    int retval = ERROR_OK;
    if (jtag_info->cur_scan_chain != new_scan_chain)
        return arm_jtag_scann_inner(jtag_info, new_scan_chain, end_state);
 
    return retval;
}
 
int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
int arm_jtag_close_connection(struct arm_jtag *jtag_info);
 
/* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
static inline void arm7flip32(jtag_callback_data_t arg)
{
    uint8_t *in = (uint8_t *)arg;
    *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
}
 
static inline void arm_le_to_h_u32(jtag_callback_data_t arg)
{
    uint8_t *in = (uint8_t *)arg;
    *((uint32_t *)arg) = le_to_h_u32(in);
}
 
#endif /* OPENOCD_TARGET_ARM_JTAG_H */