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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 *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "arm_jtag.h"
#if 0
#define _ARM_JTAG_SCAN_N_CHECK_
#endif
int arm_jtag_set_instr_inner(struct jtag_tap *tap,
uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
{
struct scan_field field;
uint8_t t[4] = { 0 };
field.num_bits = tap->ir_length;
field.out_value = t;
buf_set_u32(t, 0, field.num_bits, new_instr);
field.in_value = NULL;
if (!no_verify_capture)
jtag_add_ir_scan(tap, &field, end_state);
else {
/* FIX!!!! this is a kludge!!! arm926ejs.c should reimplement this arm_jtag_set_instr to
* have special verification code.
*/
jtag_add_ir_scan_noverify(tap, &field, 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)
{
int retval = ERROR_OK;
uint8_t out_value[4] = { 0 };
buf_set_u32(out_value, 0, jtag_info->scann_size, new_scan_chain);
struct scan_field field = { .num_bits = jtag_info->scann_size, .out_value = out_value, };
retval = arm_jtag_set_instr(jtag_info->tap, jtag_info->scann_instr, NULL, end_state);
if (retval != ERROR_OK)
return retval;
jtag_add_dr_scan(jtag_info->tap,
1,
&field,
end_state);
jtag_info->cur_scan_chain = new_scan_chain;
return retval;
}
static int arm_jtag_reset_callback(enum jtag_event event, void *priv)
{
struct arm_jtag *jtag_info = priv;
if (event == JTAG_TRST_ASSERTED)
jtag_info->cur_scan_chain = 0;
return ERROR_OK;
}
int arm_jtag_setup_connection(struct arm_jtag *jtag_info)
{
jtag_info->scann_instr = 0x2;
jtag_info->cur_scan_chain = 0;
jtag_info->intest_instr = 0xc;
return jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
}
int arm_jtag_close_connection(struct arm_jtag *jtag_info)
{
return jtag_unregister_event_callback(arm_jtag_reset_callback, jtag_info);
}
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