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)
44 field.device = jtag_info->chain_pos;
45 field.num_bits = device->ir_length;
46 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
47 buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
48 field.out_mask = NULL;
49 field.in_value = NULL;
50 field.in_check_value = NULL;
51 field.in_check_mask = NULL;
52 field.in_handler = handler;
53 field.in_handler_priv = NULL;
54 jtag_add_ir_scan(1, &field, -1);
57 free(field.out_value);
63 int arm_jtag_scann(arm_jtag_t *jtag_info, u32 new_scan_chain)
65 if(jtag_info->cur_scan_chain != new_scan_chain)
67 #ifdef _ARM_JTAG_SCAN_N_CHECK_
68 u8 scan_n_check_value = 1 << (jtag_info->scann_size - 1);
72 field.device = jtag_info->chain_pos;
73 field.num_bits = jtag_info->scann_size;
74 field.out_value = calloc(CEIL(field.num_bits, 8), 1);
75 buf_set_u32(field.out_value, 0, field.num_bits, new_scan_chain);
76 field.out_mask = NULL;
77 field.in_value = NULL;
78 #ifdef _ARM_JTAG_SCAN_N_CHECK_
79 jtag_set_check_value(&field, &scan_n_check_value, NULL, NULL, NULL);
81 field.in_handler = NULL;
82 field.in_handler_priv = NULL;
86 arm_jtag_set_instr(jtag_info, jtag_info->scann_instr, NULL);
87 jtag_add_dr_scan(1, &field, -1);
89 jtag_info->cur_scan_chain = new_scan_chain;
91 free(field.out_value);
97 int arm_jtag_reset_callback(enum jtag_event event, void *priv)
99 arm_jtag_t *jtag_info = priv;
101 if (event == JTAG_TRST_ASSERTED)
103 jtag_info->cur_scan_chain = 0;
109 int arm_jtag_setup_connection(arm_jtag_t *jtag_info)
111 jtag_info->scann_instr = 0x2;
112 jtag_info->cur_scan_chain = 0;
113 jtag_info->intest_instr = 0xc;
115 jtag_register_event_callback(arm_jtag_reset_callback, jtag_info);
120 /* read JTAG buffer into host-endian u32, flipping bit-order */
121 int arm_jtag_buf_to_u32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
124 *dest = flip_u32(le_to_h_u32(in_buf), 32);
128 /* read JTAG buffer into little-endian u32, flipping bit-order */
129 int arm_jtag_buf_to_le32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
131 h_u32_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
135 /* read JTAG buffer into little-endian u16, flipping bit-order */
136 int arm_jtag_buf_to_le16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
138 h_u16_to_le(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
142 /* read JTAG buffer into big-endian u32, flipping bit-order */
143 int arm_jtag_buf_to_be32_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
145 h_u32_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32));
149 /* read JTAG buffer into big-endian u16, flipping bit-order */
150 int arm_jtag_buf_to_be16_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
152 h_u16_to_be(((u8*)priv), flip_u32(le_to_h_u32(in_buf), 32) & 0xffff);
156 /* read JTAG buffer into u8, flipping bit-order */
157 int arm_jtag_buf_to_8_flip(u8 *in_buf, void *priv, struct scan_field_s *field)
160 *dest = flip_u32(le_to_h_u32(in_buf), 32) & 0xff;
164 /* not-flipping variants */
165 /* read JTAG buffer into host-endian u32 */
166 int arm_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
169 *dest = le_to_h_u32(in_buf);
173 /* read JTAG buffer into little-endian u32 */
174 int arm_jtag_buf_to_le32(u8 *in_buf, void *priv, struct scan_field_s *field)
176 h_u32_to_le(((u8*)priv), le_to_h_u32(in_buf));
180 /* read JTAG buffer into little-endian u16 */
181 int arm_jtag_buf_to_le16(u8 *in_buf, void *priv, struct scan_field_s *field)
183 h_u16_to_le(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
187 /* read JTAG buffer into big-endian u32 */
188 int arm_jtag_buf_to_be32(u8 *in_buf, void *priv, struct scan_field_s *field)
190 h_u32_to_be(((u8*)priv), le_to_h_u32(in_buf));
194 /* read JTAG buffer into big-endian u16 */
195 int arm_jtag_buf_to_be16(u8 *in_buf, void *priv, struct scan_field_s *field)
197 h_u16_to_be(((u8*)priv), le_to_h_u32(in_buf) & 0xffff);
201 /* read JTAG buffer into u8 */
202 int arm_jtag_buf_to_8(u8 *in_buf, void *priv, struct scan_field_s *field)
205 *dest = le_to_h_u32(in_buf) & 0xff;