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);