1 /***************************************************************************
2 * Copyright (C) 2009 by Mathias Kuester *
3 * mkdorg@users.sourceforge.net *
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, see <http://www.gnu.org/licenses/>. *
17 ***************************************************************************/
26 #include "target_type.h"
29 #include "dsp563xx_once.h"
31 #define JTAG_STATUS_STATIC_MASK 0x03
32 #define JTAG_STATUS_STATIC_VALUE 0x01
34 #define JTAG_STATUS_NORMAL 0x01
35 #define JTAG_STATUS_STOPWAIT 0x05
36 #define JTAG_STATUS_BUSY 0x09
37 #define JTAG_STATUS_DEBUG 0x0d
39 #define JTAG_INSTR_EXTEST 0x00
40 #define JTAG_INSTR_SAMPLE_PRELOAD 0x01
41 #define JTAG_INSTR_IDCODE 0x02
42 #define JTAG_INSTR_HIZ 0x04
43 #define JTAG_INSTR_CLAMP 0x05
44 #define JTAG_INSTR_ENABLE_ONCE 0x06
45 #define JTAG_INSTR_DEBUG_REQUEST 0x07
46 #define JTAG_INSTR_BYPASS 0x0F
49 static inline int dsp563xx_write_dr(struct jtag_tap *tap, uint8_t * dr_in, uint8_t * dr_out, int dr_len, int rti)
51 jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
57 static inline int dsp563xx_write_dr_u8(struct jtag_tap *tap, uint8_t * dr_in, uint8_t dr_out, int dr_len, int rti)
59 return dsp563xx_write_dr(tap, dr_in, &dr_out, dr_len, rti);
63 static inline int dsp563xx_write_dr_u32(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out, int dr_len, int rti)
65 return dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) &dr_out, dr_len, rti);
68 /** single word instruction */
69 static inline int dsp563xx_once_ir_exec(struct jtag_tap *tap, int flush, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex)
73 err = dsp563xx_write_dr_u8(tap, 0, instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0);
77 err = jtag_execute_queue();
81 /* IR and DR functions */
82 static inline int dsp563xx_write_ir(struct jtag_tap *tap, uint8_t * ir_in, uint8_t * ir_out, int ir_len, int rti)
84 jtag_add_plain_ir_scan(tap->ir_length, ir_out, ir_in, TAP_IDLE);
89 static inline int dsp563xx_write_ir_u8(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out, int ir_len, int rti)
91 return dsp563xx_write_ir(tap, ir_in, &ir_out, ir_len, rti);
94 static inline int dsp563xx_jtag_sendinstr(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out)
96 return dsp563xx_write_ir_u8(tap, ir_in, ir_out, tap->ir_length, 1);
100 int dsp563xx_once_target_status(struct jtag_tap *tap)
105 err = dsp563xx_jtag_sendinstr(tap, &jtag_status, JTAG_INSTR_ENABLE_ONCE);
107 return TARGET_UNKNOWN;
108 err = jtag_execute_queue();
110 return TARGET_UNKNOWN;
112 /* verify correct static status pattern */
113 if ((jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE)
114 return TARGET_UNKNOWN;
116 if (jtag_status != JTAG_STATUS_DEBUG)
117 return TARGET_RUNNING;
119 return TARGET_HALTED;
123 int dsp563xx_once_request_debug(struct jtag_tap *tap, int reset_state)
126 uint8_t ir_in = 0, pattern = 0;
129 /* in reset state we only get a ACK
130 * from the interface */
134 pattern = JTAG_STATUS_DEBUG;
136 /* wait until we get the ack */
137 while (ir_in != pattern) {
138 err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_DEBUG_REQUEST);
141 err = jtag_execute_queue();
145 LOG_DEBUG("debug request: %02X", ir_in);
148 return ERROR_TARGET_FAILURE;
151 /* we cant enable the once in reset state */
155 /* try to enable once */
158 while (ir_in != pattern) {
159 err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_ENABLE_ONCE);
162 err = jtag_execute_queue();
166 LOG_DEBUG("enable once: %02X", ir_in);
168 if (retry++ == 100) {
170 return ERROR_TARGET_FAILURE;
174 if (ir_in != JTAG_STATUS_DEBUG)
175 return ERROR_TARGET_FAILURE;
180 /** once read registers */
181 int dsp563xx_once_read_register(struct jtag_tap *tap, int flush, struct once_reg *regs, int len)
186 for (i = 0; i < len; i++) {
187 err = dsp563xx_once_reg_read_ex(tap, flush, regs[i].addr, regs[i].len, ®s[i].reg);
193 err = jtag_execute_queue();
197 /** once read register with register len */
198 int dsp563xx_once_reg_read_ex(struct jtag_tap *tap, int flush, uint8_t reg, uint8_t len, uint32_t * data)
202 err = dsp563xx_once_ir_exec(tap, 1, reg, 1, 0, 0);
205 err = dsp563xx_write_dr_u32(tap, data, 0x00, len, 0);
209 err = jtag_execute_queue();
214 /** once read register */
215 int dsp563xx_once_reg_read(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t * data)
219 err = dsp563xx_once_ir_exec(tap, flush, reg, 1, 0, 0);
222 err = dsp563xx_write_dr_u32(tap, data, 0x00, 24, 0);
226 err = jtag_execute_queue();
231 /** once write register */
232 int dsp563xx_once_reg_write(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t data)
236 err = dsp563xx_once_ir_exec(tap, flush, reg, 0, 0, 0);
239 err = dsp563xx_write_dr_u32(tap, 0x00, data, 24, 0);
243 err = jtag_execute_queue();
247 /** single word instruction */
248 int dsp563xx_once_execute_sw_ir(struct jtag_tap *tap, int flush, uint32_t opcode)
252 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
255 err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
259 err = jtag_execute_queue();
263 /** double word instruction */
264 int dsp563xx_once_execute_dw_ir(struct jtag_tap *tap, int flush, uint32_t opcode, uint32_t operand)
268 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 0, 0);
271 err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
275 err = jtag_execute_queue();
280 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
283 err = dsp563xx_write_dr_u32(tap, 0, operand, 24, 0);
287 err = jtag_execute_queue();