1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
26 #include "binarybuffer.h"
33 #define _ARM_JTAG_SCAN_N_CHECK_
36 int arm_jtag_set_instr(arm_jtag_t *jtag_info, u32 new_instr, in_handler_t handler)
38 jtag_device_t *device = jtag_get_device(jtag_info->chain_pos);
40 if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
45 field.device = jtag_info->chain_pos;
46 field.num_bits = device->ir_length;
48 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
49 field.out_mask = NULL;
50 field.in_value = NULL;
51 field.in_check_value = NULL;
52 field.in_check_mask = NULL;
53 field.in_handler = handler;
54 field.in_handler_priv = NULL;
55 jtag_add_ir_scan(1, &field, -1);
61 int arm_jtag_scann(arm_jtag_t *jtag_info, u32 new_scan_chain)
63 if(jtag_info->cur_scan_chain != new_scan_chain)
68 values[0]=new_scan_chain;
69 num_bits[0]=jtag_info->scann_size;
71 arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL);
72 jtag_add_dr_out(jtag_info->chain_pos,
78 jtag_info->cur_scan_chain = new_scan_chain;
84 int arm_jtag_reset_callback(enum jtag_event event, void *priv)
86 arm_jtag_t *jtag_info = priv;
88 if (event == JTAG_TRST_ASSERTED)
90 jtag_info->cur_scan_chain = 0;
96 int arm_jtag_setup_connection(arm_jtag_t *jtag_info)
98 jtag_info->scann_instr = 0x2;
99 jtag_info->cur_scan_chain = 0;
100 jtag_info->intest_instr = 0xc;
102 jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
107 /* read JTAG buffer into host-endian u32, flipping bit-order */
108 int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
111 *dest = flip_u32(le_to_h_u32(in_buf), 32);
115 /* read JTAG buffer into little-endian u32, flipping bit-order */
116 int arm_jtag_buf_to_le32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
118 h_u32_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
122 /* read JTAG buffer into little-endian u16, flipping bit-order */
123 int arm_jtag_buf_to_le16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
125 h_u16_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
129 /* read JTAG buffer into big-endian u32, flipping bit-order */
130 int arm_jtag_buf_to_be32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
132 h_u32_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
136 /* read JTAG buffer into big-endian u16, flipping bit-order */
137 int arm_jtag_buf_to_be16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
139 h_u16_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
143 /* read JTAG buffer into u8, flipping bit-order */
144 int arm_jtag_buf_to_8_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
147 *dest = flip_u32(le_to_h_u32(in_buf), 32) & 0xff;
151 /* not-flipping variants */
152 /* read JTAG buffer into host-endian u32 */
153 int arm_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
156 *dest = le_to_h_u32(in_buf);
160 /* read JTAG buffer into little-endian u32 */
161 int arm_jtag_buf_to_le32(u8 *in_buf, void *priv, struct scan_field_s *field)
163 h_u32_to_le(((u8*)priv), le_to_h_u32(in_buf));
167 /* read JTAG buffer into little-endian u16 */
168 int arm_jtag_buf_to_le16(u8 *in_buf, void *priv, struct scan_field_s *field)
170 h_u16_to_le(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
174 /* read JTAG buffer into big-endian u32 */
175 int arm_jtag_buf_to_be32(u8 *in_buf, void *priv, struct scan_field_s *field)
177 h_u32_to_be(((u8*)priv), le_to_h_u32(in_buf));
181 /* read JTAG buffer into big-endian u16 */
182 int arm_jtag_buf_to_be16(u8 *in_buf, void *priv, struct scan_field_s *field)
184 h_u16_to_be(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
188 /* read JTAG buffer into u8 */
189 int arm_jtag_buf_to_8(u8 *in_buf, void *priv, struct scan_field_s *field)
192 *dest = le_to_h_u32(in_buf) & 0xff;