1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
20 ***************************************************************************/
29 #define _ARM_JTAG_SCAN_N_CHECK_
32 int arm_jtag_set_instr_inner(struct jtag_tap
*tap
,
33 uint32_t new_instr
, void *no_verify_capture
, tap_state_t end_state
)
35 struct scan_field field
;
38 field
.num_bits
= tap
->ir_length
;
40 buf_set_u32(t
, 0, field
.num_bits
, new_instr
);
41 field
.in_value
= NULL
;
43 if (no_verify_capture
== NULL
)
44 jtag_add_ir_scan(tap
, &field
, end_state
);
46 /* FIX!!!! this is a kludge!!! arm926ejs.c should reimplement this arm_jtag_set_instr to
47 * have special verification code.
49 jtag_add_ir_scan_noverify(tap
, &field
, end_state
);
55 int arm_jtag_scann_inner(struct arm_jtag
*jtag_info
, uint32_t new_scan_chain
, tap_state_t end_state
)
57 int retval
= ERROR_OK
;
60 buf_set_u32(out_value
, 0, jtag_info
->scann_size
, new_scan_chain
);
61 struct scan_field field
= { .num_bits
= jtag_info
->scann_size
, .out_value
= out_value
, };
63 retval
= arm_jtag_set_instr(jtag_info
->tap
, jtag_info
->scann_instr
, NULL
, end_state
);
64 if (retval
!= ERROR_OK
)
67 jtag_add_dr_scan(jtag_info
->tap
,
72 jtag_info
->cur_scan_chain
= new_scan_chain
;
77 static int arm_jtag_reset_callback(enum jtag_event event
, void *priv
)
79 struct arm_jtag
*jtag_info
= priv
;
81 if (event
== JTAG_TRST_ASSERTED
)
82 jtag_info
->cur_scan_chain
= 0;
87 int arm_jtag_setup_connection(struct arm_jtag
*jtag_info
)
89 jtag_info
->scann_instr
= 0x2;
90 jtag_info
->cur_scan_chain
= 0;
91 jtag_info
->intest_instr
= 0xc;
93 return jtag_register_event_callback(arm_jtag_reset_callback
, jtag_info
);