1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /***************************************************************************
4 * Copyright (C) 2005 by Dominic Rath *
5 * Dominic.Rath@gmx.de *
7 * Copyright (C) 2007,2008 Øyvind Harboe *
8 * oyvind.harboe@zylin.com *
9 ***************************************************************************/
18 #define _ARM_JTAG_SCAN_N_CHECK_
21 int arm_jtag_set_instr_inner(struct jtag_tap
*tap
,
22 uint32_t new_instr
, void *no_verify_capture
, tap_state_t end_state
)
24 struct scan_field field
;
27 field
.num_bits
= tap
->ir_length
;
29 buf_set_u32(t
, 0, field
.num_bits
, new_instr
);
30 field
.in_value
= NULL
;
32 if (!no_verify_capture
)
33 jtag_add_ir_scan(tap
, &field
, end_state
);
35 /* FIX!!!! this is a kludge!!! arm926ejs.c should reimplement this arm_jtag_set_instr to
36 * have special verification code.
38 jtag_add_ir_scan_noverify(tap
, &field
, end_state
);
44 int arm_jtag_scann_inner(struct arm_jtag
*jtag_info
, uint32_t new_scan_chain
, tap_state_t end_state
)
46 int retval
= ERROR_OK
;
48 uint8_t out_value
[4] = { 0 };
49 buf_set_u32(out_value
, 0, jtag_info
->scann_size
, new_scan_chain
);
50 struct scan_field field
= { .num_bits
= jtag_info
->scann_size
, .out_value
= out_value
, };
52 retval
= arm_jtag_set_instr(jtag_info
->tap
, jtag_info
->scann_instr
, NULL
, end_state
);
53 if (retval
!= ERROR_OK
)
56 jtag_add_dr_scan(jtag_info
->tap
,
61 jtag_info
->cur_scan_chain
= new_scan_chain
;
66 static int arm_jtag_reset_callback(enum jtag_event event
, void *priv
)
68 struct arm_jtag
*jtag_info
= priv
;
70 if (event
== JTAG_TRST_ASSERTED
)
71 jtag_info
->cur_scan_chain
= 0;
76 int arm_jtag_setup_connection(struct arm_jtag
*jtag_info
)
78 jtag_info
->scann_instr
= 0x2;
79 jtag_info
->cur_scan_chain
= 0;
80 jtag_info
->intest_instr
= 0xc;
82 return jtag_register_event_callback(arm_jtag_reset_callback
, jtag_info
);
85 int arm_jtag_close_connection(struct arm_jtag
*jtag_info
)
87 return jtag_unregister_event_callback(arm_jtag_reset_callback
, jtag_info
);