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, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
19 ***************************************************************************/
28 #include "target_type.h"
31 #include "dsp563xx_once.h"
33 #define JTAG_STATUS_STATIC_MASK 0x03
34 #define JTAG_STATUS_STATIC_VALUE 0x01
36 #define JTAG_STATUS_NORMAL 0x01
37 #define JTAG_STATUS_STOPWAIT 0x05
38 #define JTAG_STATUS_BUSY 0x09
39 #define JTAG_STATUS_DEBUG 0x0d
41 #define JTAG_INSTR_EXTEST 0x00
42 #define JTAG_INSTR_SAMPLE_PRELOAD 0x01
43 #define JTAG_INSTR_IDCODE 0x02
44 #define JTAG_INSTR_HIZ 0x04
45 #define JTAG_INSTR_CLAMP 0x05
46 #define JTAG_INSTR_ENABLE_ONCE 0x06
47 #define JTAG_INSTR_DEBUG_REQUEST 0x07
48 #define JTAG_INSTR_BYPASS 0x0F
51 static inline int dsp563xx_write_dr(struct jtag_tap *tap, uint8_t * dr_in, uint8_t * dr_out, int dr_len, int rti)
53 jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
59 static inline int dsp563xx_write_dr_u8(struct jtag_tap *tap, uint8_t * dr_in, uint8_t dr_out, int dr_len, int rti)
61 return dsp563xx_write_dr(tap, dr_in, &dr_out, dr_len, rti);
65 static inline int dsp563xx_write_dr_u32(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out, int dr_len, int rti)
67 return dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) &dr_out, dr_len, rti);
70 /** single word instruction */
71 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)
75 err = dsp563xx_write_dr_u8(tap, 0, instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0);
79 err = jtag_execute_queue();
83 /* IR and DR functions */
84 static inline int dsp563xx_write_ir(struct jtag_tap *tap, uint8_t * ir_in, uint8_t * ir_out, int ir_len, int rti)
86 jtag_add_plain_ir_scan(tap->ir_length, ir_out, ir_in, TAP_IDLE);
91 static inline int dsp563xx_write_ir_u8(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out, int ir_len, int rti)
93 return dsp563xx_write_ir(tap, ir_in, &ir_out, ir_len, rti);
96 static inline int dsp563xx_jtag_sendinstr(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out)
98 return dsp563xx_write_ir_u8(tap, ir_in, ir_out, tap->ir_length, 1);
102 int dsp563xx_once_target_status(struct jtag_tap *tap)
107 err = dsp563xx_jtag_sendinstr(tap, &jtag_status, JTAG_INSTR_ENABLE_ONCE);
109 return TARGET_UNKNOWN;
110 err = jtag_execute_queue();
112 return TARGET_UNKNOWN;
114 /* verify correct static status pattern */
115 if ((jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE)
116 return TARGET_UNKNOWN;
118 if (jtag_status != JTAG_STATUS_DEBUG)
119 return TARGET_RUNNING;
121 return TARGET_HALTED;
125 int dsp563xx_once_request_debug(struct jtag_tap *tap, int reset_state)
128 uint8_t ir_in = 0, pattern = 0;
131 /* in reset state we only get a ACK
132 * from the interface */
136 pattern = JTAG_STATUS_DEBUG;
138 /* wait until we get the ack */
139 while (ir_in != pattern) {
140 err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_DEBUG_REQUEST);
143 err = jtag_execute_queue();
147 LOG_DEBUG("debug request: %02X", ir_in);
150 return ERROR_TARGET_FAILURE;
153 /* we cant enable the once in reset state */
157 /* try to enable once */
160 while (ir_in != pattern) {
161 err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_ENABLE_ONCE);
164 err = jtag_execute_queue();
168 LOG_DEBUG("enable once: %02X", ir_in);
170 if (retry++ == 100) {
172 return ERROR_TARGET_FAILURE;
176 if (ir_in != JTAG_STATUS_DEBUG)
177 return ERROR_TARGET_FAILURE;
182 /** once read registers */
183 int dsp563xx_once_read_register(struct jtag_tap *tap, int flush, struct once_reg *regs, int len)
188 for (i = 0; i < len; i++) {
189 err = dsp563xx_once_reg_read_ex(tap, flush, regs[i].addr, regs[i].len, ®s[i].reg);
195 err = jtag_execute_queue();
199 /** once read register with register len */
200 int dsp563xx_once_reg_read_ex(struct jtag_tap *tap, int flush, uint8_t reg, uint8_t len, uint32_t * data)
204 err = dsp563xx_once_ir_exec(tap, 1, reg, 1, 0, 0);
207 err = dsp563xx_write_dr_u32(tap, data, 0x00, len, 0);
211 err = jtag_execute_queue();
216 /** once read register */
217 int dsp563xx_once_reg_read(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t * data)
221 err = dsp563xx_once_ir_exec(tap, flush, reg, 1, 0, 0);
224 err = dsp563xx_write_dr_u32(tap, data, 0x00, 24, 0);
228 err = jtag_execute_queue();
233 /** once write register */
234 int dsp563xx_once_reg_write(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t data)
238 err = dsp563xx_once_ir_exec(tap, flush, reg, 0, 0, 0);
241 err = dsp563xx_write_dr_u32(tap, 0x00, data, 24, 0);
245 err = jtag_execute_queue();
249 /** single word instruction */
250 int dsp563xx_once_execute_sw_ir(struct jtag_tap *tap, int flush, uint32_t opcode)
254 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
257 err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
261 err = jtag_execute_queue();
265 /** double word instruction */
266 int dsp563xx_once_execute_dw_ir(struct jtag_tap *tap, int flush, uint32_t opcode, uint32_t operand)
270 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 0, 0);
273 err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0);
277 err = jtag_execute_queue();
282 err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0);
285 err = dsp563xx_write_dr_u32(tap, 0, operand, 24, 0);
289 err = jtag_execute_queue();