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, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
29 #include "binarybuffer.h"
36 #define _ARM_JTAG_SCAN_N_CHECK_
39 int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr, in_handler_t handler)
41 jtag_device_t *device = jtag_get_device(jtag_info->chain_pos);
43 if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
48 field.device = jtag_info->chain_pos;
49 field.num_bits = device->ir_length;
51 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
52 field.out_mask = NULL;
53 field.in_value = NULL;
54 field.in_check_value = NULL;
55 field.in_check_mask = NULL;
56 field.in_handler = handler;
57 field.in_handler_priv = NULL;
58 jtag_add_ir_scan(1, &field, -1);
64 int arm_jtag_scann(arm_jtag_t *jtag_info, u32 new_scan_chain)
66 int retval = ERROR_OK;
67 if(jtag_info->cur_scan_chain != new_scan_chain)
72 values[0]=new_scan_chain;
73 num_bits[0]=jtag_info->scann_size;
75 if((retval = arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL)) != ERROR_OK)
80 jtag_add_dr_out(jtag_info->chain_pos,
86 jtag_info->cur_scan_chain = new_scan_chain;
92 int arm_jtag_reset_callback(enum jtag_event event, void *priv)
94 arm_jtag_t *jtag_info = priv;
96 if (event == JTAG_TRST_ASSERTED)
98 jtag_info->cur_scan_chain = 0;
104 int arm_jtag_setup_connection(arm_jtag_t *jtag_info)
106 jtag_info->scann_instr = 0x2;
107 jtag_info->cur_scan_chain = 0;
108 jtag_info->intest_instr = 0xc;
110 return jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
113 /* read JTAG buffer into host-endian u32, flipping bit-order */
114 int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
117 *dest = flip_u32(le_to_h_u32(in_buf), 32);
121 /* read JTAG buffer into little-endian u32, flipping bit-order */
122 int arm_jtag_buf_to_le32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
124 h_u32_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
128 /* read JTAG buffer into little-endian u16, flipping bit-order */
129 int arm_jtag_buf_to_le16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
131 h_u16_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
135 /* read JTAG buffer into big-endian u32, flipping bit-order */
136 int arm_jtag_buf_to_be32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
138 h_u32_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
142 /* read JTAG buffer into big-endian u16, flipping bit-order */
143 int arm_jtag_buf_to_be16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
145 h_u16_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
149 /* read JTAG buffer into u8, flipping bit-order */
150 int arm_jtag_buf_to_8_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
153 *dest = flip_u32(le_to_h_u32(in_buf), 32) & 0xff;
157 /* not-flipping variants */
158 /* read JTAG buffer into host-endian u32 */
159 int arm_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
162 *dest = le_to_h_u32(in_buf);
166 /* read JTAG buffer into little-endian u32 */
167 int arm_jtag_buf_to_le32(u8 *in_buf, void *priv, struct scan_field_s *field)
169 h_u32_to_le(((u8*)priv), le_to_h_u32(in_buf));
173 /* read JTAG buffer into little-endian u16 */
174 int arm_jtag_buf_to_le16(u8 *in_buf, void *priv, struct scan_field_s *field)
176 h_u16_to_le(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
180 /* read JTAG buffer into big-endian u32 */
181 int arm_jtag_buf_to_be32(u8 *in_buf, void *priv, struct scan_field_s *field)
183 h_u32_to_be(((u8*)priv), le_to_h_u32(in_buf));
187 /* read JTAG buffer into big-endian u16 */
188 int arm_jtag_buf_to_be16(u8 *in_buf, void *priv, struct scan_field_s *field)
190 h_u16_to_be(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
194 /* read JTAG buffer into u8 */
195 int arm_jtag_buf_to_8(u8 *in_buf, void *priv, struct scan_field_s *field)
198 *dest = le_to_h_u32(in_buf) & 0xff;