f3e0bc2a3daa9a029cfd200ae376583d68312d30
[fw/openocd] / src / target / arm_jtag.h
1 /***************************************************************************
2  *   Copyright (C) 2005 by Dominic Rath                                    *
3  *   Dominic.Rath@gmx.de                                                   *
4  *                                                                         *
5  *   Copyright (C) 2007-2010 Ã˜yvind Harboe                                 *
6  *   oyvind.harboe@zylin.com                                               *
7  *                                                                         *
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.                                   *
12  *                                                                         *
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.                          *
17  *                                                                         *
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  ***************************************************************************/
21
22 #ifndef OPENOCD_TARGET_ARM_JTAG_H
23 #define OPENOCD_TARGET_ARM_JTAG_H
24
25 #include <jtag/jtag.h>
26 #include <helper/bits.h>
27
28 struct arm_jtag {
29         struct jtag_tap *tap;
30
31         uint32_t scann_size;
32         uint32_t scann_instr;
33         uint32_t cur_scan_chain;
34
35         uint32_t intest_instr;
36 };
37
38 int arm_jtag_set_instr_inner(struct jtag_tap *tap, uint32_t new_instr,
39                 void *no_verify_capture,
40                 tap_state_t end_state);
41
42 static inline int arm_jtag_set_instr(struct jtag_tap *tap,
43                 uint32_t new_instr, void *no_verify_capture, tap_state_t end_state)
44 {
45         /* inline most common code path */
46         if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != (new_instr & (BIT(tap->ir_length) - 1)))
47                 return arm_jtag_set_instr_inner(tap, new_instr, no_verify_capture, end_state);
48
49         return ERROR_OK;
50
51 }
52
53 int arm_jtag_scann_inner(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state);
54 static inline int arm_jtag_scann(struct arm_jtag *jtag_info, uint32_t new_scan_chain, tap_state_t end_state)
55 {
56         /* inline most common code path */
57         int retval = ERROR_OK;
58         if (jtag_info->cur_scan_chain != new_scan_chain)
59                 return arm_jtag_scann_inner(jtag_info, new_scan_chain, end_state);
60
61         return retval;
62 }
63
64 int arm_jtag_setup_connection(struct arm_jtag *jtag_info);
65 int arm_jtag_close_connection(struct arm_jtag *jtag_info);
66
67 /* use this as a static so we can inline it in -O3 and refer to it via a pointer  */
68 static inline void arm7flip32(jtag_callback_data_t arg)
69 {
70         uint8_t *in = (uint8_t *)arg;
71         *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
72 }
73
74 static inline void arm_le_to_h_u32(jtag_callback_data_t arg)
75 {
76         uint8_t *in = (uint8_t *)arg;
77         *((uint32_t *)arg) = le_to_h_u32(in);
78 }
79
80 #endif /* OPENOCD_TARGET_ARM_JTAG_H */