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 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
27 #include "target_type.h"
30 #include "dsp563xx_once.h"
32 #define JTAG_STATUS_STATIC_MASK 0x03
33 #define JTAG_STATUS_STATIC_VALUE 0x01
35 #define JTAG_STATUS_NORMAL 0x01
36 #define JTAG_STATUS_STOPWAIT 0x05
37 #define JTAG_STATUS_BUSY 0x09
38 #define JTAG_STATUS_DEBUG 0x0d
40 #define JTAG_INSTR_EXTEST 0x00
41 #define JTAG_INSTR_SAMPLE_PRELOAD 0x01
42 #define JTAG_INSTR_IDCODE 0x02
43 #define JTAG_INSTR_HIZ 0x04
44 #define JTAG_INSTR_CLAMP 0x05
45 #define JTAG_INSTR_ENABLE_ONCE 0x06
46 #define JTAG_INSTR_DEBUG_REQUEST 0x07
47 #define JTAG_INSTR_BYPASS 0x0F
50 static inline int dsp563xx_write_dr(struct jtag_tap *tap, uint8_t * dr_in, uint8_t * dr_out, int dr_len, int rti)
52 jtag_add_plain_dr_scan(dr_len, dr_out, dr_in, TAP_IDLE);
58 static inline int dsp563xx_write_dr_u8(struct jtag_tap *tap, uint8_t * dr_in, uint8_t dr_out, int dr_len, int rti)
60 return dsp563xx_write_dr(tap, dr_in, &dr_out, dr_len, rti);
64 static inline int dsp563xx_write_dr_u32(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out, int dr_len, int rti)
66 return dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) & dr_out, dr_len, rti);
69 /** single word instruction */
70 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)
74 if ((err = dsp563xx_write_dr_u8(tap, 0, instr | (ex << 5) | (go << 6) | (rw << 7), 8, 0)) != ERROR_OK)
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 if ((err = dsp563xx_jtag_sendinstr(tap, &jtag_status, JTAG_INSTR_ENABLE_ONCE)) != ERROR_OK)
106 return TARGET_UNKNOWN;
107 if ((err = jtag_execute_queue()) != ERROR_OK)
108 return TARGET_UNKNOWN;
110 /* verify correct static status pattern */
111 if ( (jtag_status & JTAG_STATUS_STATIC_MASK) != JTAG_STATUS_STATIC_VALUE )
112 return TARGET_UNKNOWN;
114 if (jtag_status != JTAG_STATUS_DEBUG)
115 return TARGET_RUNNING;
117 return TARGET_HALTED;
121 int dsp563xx_once_request_debug(struct jtag_tap *tap, int reset_state)
124 uint8_t ir_in = 0, pattern = 0;
127 /* in reset state we only get a ACK
128 * from the interface */
135 pattern = JTAG_STATUS_DEBUG;
138 /* wait until we get the ack */
139 while (ir_in != pattern)
141 if ((err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_DEBUG_REQUEST)) != ERROR_OK)
143 if ((err = jtag_execute_queue()) != ERROR_OK)
146 LOG_DEBUG("debug request: %02X", ir_in);
150 return ERROR_TARGET_FAILURE;
154 /* we cant enable the once in reset state */
160 /* try to enable once */
163 while (ir_in != pattern)
165 if ((err = dsp563xx_jtag_sendinstr(tap, &ir_in, JTAG_INSTR_ENABLE_ONCE)) != ERROR_OK)
167 if ((err = jtag_execute_queue()) != ERROR_OK)
170 LOG_DEBUG("enable once: %02X", ir_in);
175 return ERROR_TARGET_FAILURE;
179 if (ir_in != JTAG_STATUS_DEBUG)
181 return ERROR_TARGET_FAILURE;
187 /** once read registers */
188 int dsp563xx_once_read_register(struct jtag_tap *tap, int flush, struct once_reg *regs, int len)
193 for (i = 0; i < len; i++)
195 if ((err = dsp563xx_once_reg_read_ex(tap, flush, regs[i].addr, regs[i].len, ®s[i].reg)) != ERROR_OK)
200 err = jtag_execute_queue();
204 /** once read register with register len */
205 int dsp563xx_once_reg_read_ex(struct jtag_tap *tap, int flush, uint8_t reg, uint8_t len, uint32_t * data)
209 if ((err = dsp563xx_once_ir_exec(tap, 1, reg, 1, 0, 0)) != ERROR_OK)
211 if ((err = dsp563xx_write_dr_u32(tap, data, 0x00, len, 0)) != ERROR_OK)
214 err = jtag_execute_queue();
218 /** once read register */
219 int dsp563xx_once_reg_read(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t * data)
223 if ((err = dsp563xx_once_ir_exec(tap, flush, reg, 1, 0, 0)) != ERROR_OK)
225 if ((err = dsp563xx_write_dr_u32(tap, data, 0x00, 24, 0)) != ERROR_OK)
228 err = jtag_execute_queue();
232 /** once write register */
233 int dsp563xx_once_reg_write(struct jtag_tap *tap, int flush, uint8_t reg, uint32_t data)
237 if ((err = dsp563xx_once_ir_exec(tap, flush, reg, 0, 0, 0)) != ERROR_OK)
239 if ((err = dsp563xx_write_dr_u32(tap, 0x00, data, 24, 0)) != ERROR_OK)
242 err = jtag_execute_queue();
246 /** single word instruction */
247 int dsp563xx_once_execute_sw_ir(struct jtag_tap *tap, int flush, uint32_t opcode)
251 if ((err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0)) != ERROR_OK)
253 if ((err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0)) != ERROR_OK)
256 err = jtag_execute_queue();
260 /** double word instruction */
261 int dsp563xx_once_execute_dw_ir(struct jtag_tap *tap, int flush, uint32_t opcode, uint32_t operand)
265 if ((err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 0, 0)) != ERROR_OK)
267 if ((err = dsp563xx_write_dr_u32(tap, 0, opcode, 24, 0)) != ERROR_OK)
270 if ((err = jtag_execute_queue()) != ERROR_OK)
273 if ((err = dsp563xx_once_ir_exec(tap, flush, DSP563XX_ONCE_OPDBR, 0, 1, 0)) != ERROR_OK)
275 if ((err = dsp563xx_write_dr_u32(tap, 0, operand, 24, 0)) != ERROR_OK)
278 if ((err = jtag_execute_queue()) != ERROR_OK)