1 /***************************************************************************
2 * Copyright (C) 2011 by Rodrigo L. Rosa *
3 * rodrigorosa.LG@gmail.com *
5 * Based on dsp563xx_once.h written by Mathias Kuester *
6 * mkdorg@users.sourceforge.net *
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. *
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. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
28 #include "target_type.h"
29 #include "dsp5680xx.h"
31 struct dsp5680xx_common dsp5680xx_context;
34 #define err_check(retval,err_msg) if(retval != ERROR_OK){LOG_ERROR("%s: %d %s.",__FUNCTION__,__LINE__,err_msg);return retval;}
35 #define err_check_propagate(retval) if(retval!=ERROR_OK){return retval;}
37 int dsp5680xx_execute_queue(void){
39 retval = jtag_execute_queue();
40 err_check_propagate(retval);
44 static int dsp5680xx_drscan(struct target * target, uint8_t * data_to_shift_into_dr, uint8_t * data_shifted_out_of_dr, int len){
45 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
48 // - data_to_shift_into_dr: This is the data that will be shifted into the JTAG DR reg.
49 // - data_shifted_out_of_dr: The data that will be shifted out of the JTAG DR reg will stored here
50 // - len: Length of the data to be shifted to JTAG DR.
52 // Note: If data_shifted_out_of_dr == NULL, discard incoming bits.
54 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
55 int retval = ERROR_OK;
56 if (NULL == target->tap){
58 err_check(retval,"Invalid tap");
62 err_check(retval,"dr_len overflow, maxium is 32");
64 //TODO what values of len are valid for jtag_add_plain_dr_scan?
65 //can i send as many bits as i want?
66 //is the casting necessary?
67 jtag_add_plain_dr_scan(len,data_to_shift_into_dr,data_shifted_out_of_dr, TAP_IDLE);
68 if(dsp5680xx_context.flush){
69 retval = dsp5680xx_execute_queue();
70 err_check_propagate(retval);
72 if(data_shifted_out_of_dr!=NULL){
73 LOG_DEBUG("Data read (%d bits): 0x%04X",len,*data_shifted_out_of_dr);
75 LOG_DEBUG("Data read was discarded.");
79 static int dsp5680xx_irscan(struct target * target, uint32_t * data_to_shift_into_ir, uint32_t * data_shifted_out_of_ir, uint8_t ir_len){
80 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
82 // - data_to_shift_into_ir: This is the data that will be shifted into the JTAG IR reg.
83 // - data_shifted_out_of_ir: The data that will be shifted out of the JTAG IR reg will stored here
84 // - len: Length of the data to be shifted to JTAG IR.
86 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
87 int retval = ERROR_OK;
88 if (NULL == target->tap){
90 err_check(retval,"Invalid tap");
92 if (ir_len != target->tap->ir_length){
93 LOG_WARNING("%s: Invalid ir_len of core tap. If you are removing protection on flash then do not worry about this warninig.",__FUNCTION__);
94 //return ERROR_FAIL;//TODO this was commented out to enable unlocking using the master tap. did not find a way to enable the master tap without using tcl.
96 //TODO what values of len are valid for jtag_add_plain_ir_scan?
97 //can i send as many bits as i want?
98 //is the casting necessary?
99 jtag_add_plain_ir_scan(ir_len,(uint8_t *)data_to_shift_into_ir,(uint8_t *)data_shifted_out_of_ir, TAP_IDLE);
100 if(dsp5680xx_context.flush){
101 retval = dsp5680xx_execute_queue();
102 err_check_propagate(retval);
107 static int dsp5680xx_jtag_status(struct target *target, uint8_t * status){
108 uint32_t read_from_ir;
111 instr = JTAG_INSTR_ENABLE_ONCE;
112 retval = dsp5680xx_irscan(target,& instr, & read_from_ir,DSP5680XX_JTAG_CORE_TAP_IRLEN);
113 err_check_propagate(retval);
115 *status = (uint8_t)read_from_ir;
119 static int jtag_data_read(struct target * target, uint32_t * data_read, int num_bits){
120 uint32_t bogus_instr;
121 int retval = dsp5680xx_drscan(target,(uint8_t *) & bogus_instr,(uint8_t *) data_read,num_bits);
122 LOG_DEBUG("Data read (%d bits): 0x%04X",num_bits,*data_read);//TODO remove this or move to jtagio?
126 #define jtag_data_read8(target,data_read) jtag_data_read(target,data_read,8)
127 #define jtag_data_read16(target,data_read) jtag_data_read(target,data_read,16)
128 #define jtag_data_read32(target,data_read) jtag_data_read(target,data_read,32)
130 static int jtag_data_write(struct target * target, uint32_t instr,int num_bits, uint32_t * data_read){
132 uint32_t data_read_dummy;
133 retval = dsp5680xx_drscan(target,(uint8_t *) & instr,(uint8_t *) & data_read_dummy,num_bits);
134 err_check_propagate(retval);
135 if(data_read != NULL)
136 *data_read = data_read_dummy;
140 #define jtag_data_write8(target,instr,data_read) jtag_data_write(target,instr,8,data_read)
141 #define jtag_data_write16(target,instr,data_read) jtag_data_write(target,instr,16,data_read)
142 #define jtag_data_write24(target,instr,data_read) jtag_data_write(target,instr,24,data_read)
143 #define jtag_data_write32(target,instr,data_read) jtag_data_write(target,instr,32,data_read)
146 * Executes DSP instruction.
149 * @param instr Instruction to execute.
153 * @param eonce_status Value read from the EOnCE status register.
158 static int eonce_instruction_exec(struct target * target, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex,uint8_t * eonce_status){
161 uint8_t instr_with_flags = instr|(rw<<7)|(go<<6)|(ex<<5);
162 retval = jtag_data_write(target,instr_with_flags,8,&dr_out_tmp);
163 err_check_propagate(retval);
164 if(eonce_status != NULL)
165 *eonce_status = (uint8_t) dr_out_tmp;
169 ///wrappers for parameter conversion between eonce_execute_instruction and eonce_execute_instructionX
171 #define eonce_execute_instruction_1(target,opcode1,opcode2,opcode3) eonce_execute_instruction1(target,opcode1)
172 #define eonce_execute_instruction_2(target,opcode1,opcode2,opcode3) eonce_execute_instruction2(target,opcode1,opcode2)
173 #define eonce_execute_instruction_3(target,opcode1,opcode2,opcode3) eonce_execute_instruction3(target,opcode1,opcode2,opcode3)
174 #define eonce_execute_instruction(target,words,opcode1,opcode2,opcode3) eonce_execute_instruction_##words(target,opcode1,opcode2,opcode3)
176 /// Executes one word DSP instruction
177 static int eonce_execute_instruction1(struct target * target, uint16_t opcode){
179 retval = eonce_instruction_exec(target,0x04,0,1,0,NULL);
180 err_check_propagate(retval);
181 retval = jtag_data_write16(target,opcode,NULL);
182 err_check_propagate(retval);
186 /// Executes two word DSP instruction
187 static int eonce_execute_instruction2(struct target * target,uint16_t opcode1, uint16_t opcode2){
189 retval = eonce_instruction_exec(target,0x04,0,0,0,NULL);
190 err_check_propagate(retval);
191 retval = jtag_data_write16(target,opcode1,NULL);
192 err_check_propagate(retval);
193 retval = eonce_instruction_exec(target,0x04,0,1,0,NULL);
194 err_check_propagate(retval);
195 retval = jtag_data_write16(target,opcode2,NULL);
196 err_check_propagate(retval);
200 /// Executes three word DSP instruction
201 static int eonce_execute_instruction3(struct target * target, uint16_t opcode1,uint16_t opcode2,uint16_t opcode3){
203 retval = eonce_instruction_exec(target,0x04,0,0,0,NULL);
204 err_check_propagate(retval);
205 retval = jtag_data_write16(target,opcode1,NULL);
206 err_check_propagate(retval);
207 retval = eonce_instruction_exec(target,0x04,0,0,0,NULL);
208 err_check_propagate(retval);
209 retval = jtag_data_write16(target,opcode2,NULL);
210 err_check_propagate(retval);
211 retval = eonce_instruction_exec(target,0x04,0,1,0,NULL);
212 err_check_propagate(retval);
213 retval = jtag_data_write16(target,opcode3,NULL);
214 err_check_propagate(retval);
219 * --------------- Real-time data exchange ---------------
220 * The EOnCE Transmit (OTX) and Receive (ORX) registers are data memory mapped, each with an upper and lower 16 bit word.
221 * Transmit and receive directions are defined from the core’s perspective.
222 * The core writes to the Transmit register and reads the Receive register, and the host through JTAG writes to the Receive register and reads the Transmit register.
223 * Both registers have a combined data memory mapped OTXRXSR which provides indication when each may be accessed.
224 *ref: eonce_rev.1.0_0208081.pdf@36
227 /// writes data into upper ORx register of the target
228 static int eonce_tx_upper_data(struct target * target, uint16_t data, uint32_t * eonce_status_low){
230 retval = eonce_instruction_exec(target,DSP5680XX_ONCE_ORX1,0,0,0,NULL);
231 err_check_propagate(retval);
232 retval = jtag_data_write16(target,data,eonce_status_low);
233 err_check_propagate(retval);
237 /// writes data into lower ORx register of the target
238 #define eonce_tx_lower_data(target,data) eonce_instruction_exec(target,DSP5680XX_ONCE_ORX,0,0,0,NULL);\
239 jtag_data_write16(target,data)
244 * @param data_read: Returns the data read from the upper OTX register via JTAG.
245 * @return: Returns an error code (see error code documentation)
247 static int eonce_rx_upper_data(struct target * target, uint16_t * data_read)
250 retval = eonce_instruction_exec(target,DSP5680XX_ONCE_OTX1,1,0,0,NULL);
251 err_check_propagate(retval);
252 retval = jtag_data_read16(target,(uint32_t *)data_read);
253 err_check_propagate(retval);
260 * @param data_read: Returns the data read from the lower OTX register via JTAG.
261 * @return: Returns an error code (see error code documentation)
263 static int eonce_rx_lower_data(struct target * target,uint16_t * data_read)
266 retval = eonce_instruction_exec(target,DSP5680XX_ONCE_OTX,1,0,0,NULL);
267 err_check_propagate(retval);
268 retval = jtag_data_read16(target,(uint32_t *)data_read);
269 err_check_propagate(retval);
274 * -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- --
275 * -- -- -- -- --- -- -- -Core Instructions- -- -- -- --- -- -- -- --- --
276 * -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- --
280 #define eonce_move_long_to_r0(target,value) eonce_execute_instruction(target,3,0xe418,value&0xffff,value>>16)
283 #define eonce_move_long_to_n(target,value) eonce_execute_instruction(target,3,0xe41e,value&0xffff,value>>16)
286 #define eonce_move_at_r0_to_y0(target) eonce_execute_instruction(target,1,0xF514,0,0)
289 #define eonce_move_at_r0_to_y1(target) eonce_execute_instruction(target,1,0xF714,0,0)
292 #define eonce_move_long_at_r0_y(target) eonce_execute_instruction(target,1,0xF734,0,0)
295 #define eonce_move_y0_at_r0(target) eonce_execute_instruction(target,1,0xd514,0,0)
297 /// bfclr #value,x:(r0)
298 #define eonce_bfclr_at_r0(target,value) eonce_execute_instruction(target,2,0x8040,value,0)
301 #define eonce_move_value_to_y0(target,value) eonce_execute_instruction(target,2,0x8745,value,0)
303 /// move.w y0,x:(r0)+
304 #define eonce_move_y0_at_r0_inc(target) eonce_execute_instruction(target,1,0xd500,0,0)
306 /// move.w y0,p:(r0)+
307 #define eonce_move_y0_at_pr0_inc(target) eonce_execute_instruction(target,1,0x8560,0,0)
309 /// move.w p:(r0)+,y0
310 #define eonce_move_at_pr0_inc_to_y0(target) eonce_execute_instruction(target,1,0x8568,0,0)
312 /// move.w p:(r0)+,y1
313 #define eonce_move_at_pr0_inc_to_y1(target) eonce_execute_instruction(target,1,0x8768,0,0)
316 #define eonce_move_long_to_r2(target,value) eonce_execute_instruction(target,3,0xe41A,value&0xffff,value>>16)
319 #define eonce_move_y0_at_r2(target) eonce_execute_instruction(target,1,0xd516,0,0)
321 /// move.w #<value>,x:(r2)
322 #define eonce_move_value_at_r2(target,value) eonce_execute_instruction(target,2,0x8642,value,0)
324 /// move.w #<value>,x:(r0)
325 #define eonce_move_value_at_r0(target,value) eonce_execute_instruction(target,2,0x8640,value,0)
327 /// move.w #<value>,x:(R2+<disp>)
328 #define eonce_move_value_at_r2_disp(target,value,disp) eonce_execute_instruction(target,3,0x8646,value,disp)
331 #define eonce_move_at_r2_to_y0(target) eonce_execute_instruction(target,1,0xF516,0,0)
333 /// move.w p:(r2)+,y0
334 #define eonce_move_at_pr2_inc_to_y0(target) eonce_execute_instruction(target,1,0x856A,0,0)
337 #define eonce_move_long_to_r1(target,value) eonce_execute_instruction(target,3,0xE419,value&0xffff,value>>16)
340 #define eonce_move_long_to_r3(target,value) eonce_execute_instruction(target,3,0xE41B,value&0xffff,value>>16)
342 /// move.w y0,p:(r3)+
343 #define eonce_move_y0_at_pr3_inc(target) eonce_execute_instruction(target,1,0x8563,0,0)
346 #define eonce_move_y0_at_r3(target) eonce_execute_instruction(target,1,0xD503,0,0)
349 #define eonce_move_long_to_r4(target,value) eonce_execute_instruction(target,3,0xE41C,value&0xffff,value>>16)
352 #define eonce_move_pc_to_r4(target) eonce_execute_instruction(target,1,0xE716,0,0)
355 #define eonce_move_r4_to_y(target) eonce_execute_instruction(target,1,0xe764,0,0)
357 /// move.w p:(r0)+,y0
358 #define eonce_move_at_pr0_inc_to_y0(target) eonce_execute_instruction(target,1,0x8568,0,0)
360 /// move.w x:(r0)+,y0
361 #define eonce_move_at_r0_inc_to_y0(target) eonce_execute_instruction(target,1,0xf500,0,0)
364 #define eonce_move_at_r0_y0(target) eonce_execute_instruction(target,1,0xF514,0,0)
367 #define eonce_nop(target) eonce_execute_instruction(target,1,0xe700,0,0)
369 /// move.w x:(R2+<disp>),Y0
370 #define eonce_move_at_r2_disp_to_y0(target,disp) eonce_execute_instruction(target,2,0xF542,disp,0)
373 #define eonce_move_y1_at_r2(target) eonce_execute_instruction(target,1,0xd716,0,0)
376 #define eonce_move_y1_at_r0(target) eonce_execute_instruction(target,1,0xd714,0,0)
378 /// move.bp y0,x:(r0)+
379 #define eonce_move_byte_y0_at_r0(target) eonce_execute_instruction(target,1,0xd5a0,0,0)
381 /// move.w y1,p:(r0)+
382 #define eonce_move_y1_at_pr0_inc(target) eonce_execute_instruction(target,1,0x8760,0,0)
384 /// move.w y1,x:(r0)+
385 #define eonce_move_y1_at_r0_inc(target) eonce_execute_instruction(target,1,0xD700,0,0)
388 #define eonce_move_long_to_y(target,value) eonce_execute_instruction(target,3,0xe417,value&0xffff,value>>16)
390 static int eonce_move_value_to_pc(struct target * target, uint32_t value){
391 if (!(target->state == TARGET_HALTED)){
392 LOG_ERROR("Target must be halted to move PC. Target state = %d.",target->state);
393 return ERROR_TARGET_NOT_HALTED;
396 retval = eonce_execute_instruction(target,3,0xE71E,value&0xffff,value>>16);
397 err_check_propagate(retval);
401 static int eonce_load_TX_RX_to_r0(struct target * target)
404 retval = eonce_move_long_to_r0(target,((MC568013_EONCE_TX_RX_ADDR)+(MC568013_EONCE_OBASE_ADDR<<16)));
408 static int eonce_load_TX_RX_high_to_r0(struct target * target)
411 retval = eonce_move_long_to_r0(target,((MC568013_EONCE_TX1_RX1_HIGH_ADDR)+(MC568013_EONCE_OBASE_ADDR<<16)));
415 static int dsp5680xx_read_core_reg(struct target * target, uint8_t reg_addr, uint16_t * data_read)
417 //TODO implement a general version of this which matches what openocd uses.
419 uint32_t dummy_data_to_shift_into_dr;
420 retval = eonce_instruction_exec(target,reg_addr,1,0,0,NULL);
421 err_check_propagate(retval);
422 retval = dsp5680xx_drscan(target,(uint8_t *)& dummy_data_to_shift_into_dr,(uint8_t *) data_read, 8);
423 err_check_propagate(retval);
424 LOG_DEBUG("Reg. data: 0x%02X.",*data_read);
428 static int eonce_read_status_reg(struct target * target, uint16_t * data){
430 retval = dsp5680xx_read_core_reg(target,DSP5680XX_ONCE_OSR,data);
431 err_check_propagate(retval);
436 * Takes the core out of debug mode.
439 * @param eonce_status Data read from the EOnCE status register.
443 static int eonce_exit_debug_mode(struct target * target,uint8_t * eonce_status){
445 retval = eonce_instruction_exec(target,0x1F,0,0,1,eonce_status);
446 err_check_propagate(retval);
451 * Puts the core into debug mode, enabling the EOnCE module.
454 * @param eonce_status Data read from the EOnCE status register.
458 static int eonce_enter_debug_mode(struct target * target, uint16_t * eonce_status){
460 uint32_t instr = JTAG_INSTR_DEBUG_REQUEST;
461 uint32_t ir_out;//not used, just to make jtag happy.
463 retval = dsp5680xx_irscan(target,& instr,& ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
464 err_check_propagate(retval);
466 // Enable EOnCE module
467 instr = JTAG_INSTR_ENABLE_ONCE;
468 //Two rounds of jtag 0x6 (enable eonce) to enable EOnCE.
469 retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
470 err_check_propagate(retval);
471 retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
472 err_check_propagate(retval);
473 // Verify that debug mode is enabled
474 uint16_t data_read_from_dr;
475 retval = eonce_read_status_reg(target,&data_read_from_dr);
476 err_check_propagate(retval);
477 if((data_read_from_dr&0x30) == 0x30){
478 LOG_DEBUG("EOnCE successfully entered debug mode.");
479 target->state = TARGET_HALTED;
482 retval = ERROR_TARGET_FAILURE;
483 err_check(retval,"Failed to set EOnCE module to debug mode.");
485 if(eonce_status!=NULL)
486 *eonce_status = data_read_from_dr;
491 * Reads the current value of the program counter and stores it.
497 static int eonce_pc_store(struct target * target){
500 retval = eonce_move_pc_to_r4(target);
501 err_check_propagate(retval);
502 retval = eonce_move_r4_to_y(target);
503 err_check_propagate(retval);
504 retval = eonce_load_TX_RX_to_r0(target);
505 err_check_propagate(retval);
506 retval = eonce_move_y0_at_r0(target);
507 err_check_propagate(retval);
508 retval = eonce_rx_lower_data(target,(uint16_t *)&tmp);
509 err_check_propagate(retval);
510 LOG_USER("PC value: 0x%06X\n",tmp);
511 dsp5680xx_context.stored_pc = (uint32_t)tmp;
515 static int dsp5680xx_target_create(struct target *target, Jim_Interp * interp){
516 struct dsp5680xx_common *dsp5680xx = calloc(1, sizeof(struct dsp5680xx_common));
517 target->arch_info = dsp5680xx;
521 static int dsp5680xx_init_target(struct command_context *cmd_ctx, struct target *target){
522 dsp5680xx_context.stored_pc = 0;
523 dsp5680xx_context.flush = 1;
524 LOG_DEBUG("target initiated!");
525 //TODO core tap must be enabled before running these commands, currently this is done in the .cfg tcl script.
529 static int dsp5680xx_arch_state(struct target *target){
530 LOG_USER("%s not implemented yet.",__FUNCTION__);
534 int dsp5680xx_target_status(struct target * target, uint8_t * jtag_st, uint16_t * eonce_st){
535 return target->state;
538 static int dsp5680xx_assert_reset(struct target *target){
539 target->state = TARGET_RESET;
543 static int dsp5680xx_deassert_reset(struct target *target){
544 target->state = TARGET_RUNNING;
548 static int dsp5680xx_halt(struct target *target){
550 uint16_t eonce_status;
551 if(target->state == TARGET_HALTED){
552 LOG_USER("Target already halted.");
555 retval = eonce_enter_debug_mode(target,&eonce_status);
556 err_check_propagate(retval);
557 retval = eonce_pc_store(target);
558 err_check_propagate(retval);
559 //TODO is it useful to store the pc?
563 static int dsp5680xx_poll(struct target *target){
566 uint8_t eonce_status;
568 retval = dsp5680xx_jtag_status(target,&jtag_status);
569 err_check_propagate(retval);
570 if (jtag_status == JTAG_STATUS_DEBUG)
571 if (target->state != TARGET_HALTED){
572 retval = eonce_enter_debug_mode(target,&read_tmp);
573 err_check_propagate(retval);
574 eonce_status = (uint8_t) read_tmp;
575 if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_DEBUG_M){
576 LOG_WARNING("%s: Failed to put EOnCE in debug mode. Is flash locked?...",__FUNCTION__);
577 return ERROR_TARGET_FAILURE;
579 target->state = TARGET_HALTED;
583 if (jtag_status == JTAG_STATUS_NORMAL){
584 if(target->state == TARGET_RESET){
585 retval = dsp5680xx_halt(target);
586 err_check_propagate(retval);
587 retval = eonce_exit_debug_mode(target,&eonce_status);
588 err_check_propagate(retval);
589 if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
590 LOG_WARNING("%s: JTAG running, but cannot make EOnCE run. Try resetting...",__FUNCTION__);
591 return ERROR_TARGET_FAILURE;
593 target->state = TARGET_RUNNING;
597 if(target->state != TARGET_RUNNING){
598 retval = eonce_read_status_reg(target,&read_tmp);
599 err_check_propagate(retval);
600 eonce_status = (uint8_t) read_tmp;
601 if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
602 LOG_WARNING("Inconsistent target status. Restart!");
603 return ERROR_TARGET_FAILURE;
606 target->state = TARGET_RUNNING;
609 if(jtag_status == JTAG_STATUS_DEAD){
610 LOG_ERROR("%s: Cannot communicate with JTAG. Check connection...",__FUNCTION__);
611 target->state = TARGET_UNKNOWN;
612 return ERROR_TARGET_FAILURE;
614 if (target->state == TARGET_UNKNOWN){
615 LOG_ERROR("%s: Target status invalid - communication failure",__FUNCTION__);
616 return ERROR_TARGET_FAILURE;
621 static int dsp5680xx_resume(struct target *target, int current, uint32_t address,int handle_breakpoints, int debug_execution){
622 if(target->state == TARGET_RUNNING){
623 LOG_USER("Target already running.");
627 uint8_t eonce_status;
629 retval = eonce_move_value_to_pc(target,address);
630 err_check_propagate(retval);
635 retval = eonce_exit_debug_mode(target,&eonce_status );
636 err_check_propagate(retval);
637 if(eonce_status == DSP5680XX_ONCE_OSCR_NORMAL_M)
641 retval = ERROR_TARGET_FAILURE;
642 err_check(retval,"Failed to resume...");
644 target->state = TARGET_RUNNING;
646 LOG_DEBUG("EOnCE status: 0x%02X.",eonce_status);
656 * The value of @address determines if it corresponds to P: (program) or X: (data) memory. If the address is over 0x200000 then it is considered X: memory, and @pmem = 0.
657 * The special case of 0xFFXXXX is not modified, since it allows to read out the memory mapped EOnCE registers.
664 static int dsp5680xx_convert_address(uint32_t * address, int * pmem){
665 // Distinguish data memory (x:) from program memory (p:) by the address.
666 // Addresses over S_FILE_DATA_OFFSET are considered (x:) memory.
667 if(*address >= S_FILE_DATA_OFFSET){
669 if(((*address)&0xff0000)!=0xff0000)
670 *address -= S_FILE_DATA_OFFSET;
675 static int dsp5680xx_read_16_single(struct target * target, uint32_t address, uint16_t * data_read, int r_pmem){
676 //TODO add error control!
678 retval = eonce_move_long_to_r0(target,address);
679 err_check_propagate(retval);
681 retval = eonce_move_at_pr0_inc_to_y0(target);
683 retval = eonce_move_at_r0_to_y0(target);
684 err_check_propagate(retval);
685 retval = eonce_load_TX_RX_to_r0(target);
686 err_check_propagate(retval);
687 retval = eonce_move_y0_at_r0(target);
688 err_check_propagate(retval);
689 // at this point the data i want is at the reg eonce can read
690 retval = eonce_rx_lower_data(target,data_read);
691 err_check_propagate(retval);
692 LOG_DEBUG("%s: Data read from 0x%06X: 0x%04X",__FUNCTION__, address,*data_read);
696 static int dsp5680xx_read_32_single(struct target * target, uint32_t address, uint32_t * data_read, int r_pmem){
698 address = (address & 0xFFFFFE);
699 // Get data to an intermediate register
700 retval = eonce_move_long_to_r0(target,address);
701 err_check_propagate(retval);
703 retval = eonce_move_at_pr0_inc_to_y0(target);
704 err_check_propagate(retval);
705 retval = eonce_move_at_pr0_inc_to_y1(target);
706 err_check_propagate(retval);
708 retval = eonce_move_at_r0_inc_to_y0(target);
709 err_check_propagate(retval);
710 retval = eonce_move_at_r0_to_y1(target);
711 err_check_propagate(retval);
713 // Get lower part of data to TX/RX
714 retval = eonce_load_TX_RX_to_r0(target);
715 err_check_propagate(retval);
716 retval = eonce_move_y0_at_r0_inc(target); // This also load TX/RX high to r0
717 err_check_propagate(retval);
718 // Get upper part of data to TX/RX
719 retval = eonce_move_y1_at_r0(target);
720 err_check_propagate(retval);
721 // at this point the data i want is at the reg eonce can read
722 retval = eonce_rx_lower_data(target,(uint16_t * )data_read);
723 err_check_propagate(retval);
725 retval = eonce_rx_upper_data(target,&tmp);
726 err_check_propagate(retval);
727 *data_read = ((tmp<<16) | (*data_read));//This enables OpenOCD crc to succeed (when it should)
731 static int dsp5680xx_read(struct target * target, uint32_t address, unsigned size, unsigned count, uint8_t * buffer){
732 if(target->state != TARGET_HALTED){
733 LOG_USER("Target must be halted.");
736 uint32_t * buff32 = (uint32_t *) buffer;
737 uint16_t * buff16 = (uint16_t *) buffer;
738 int retval = ERROR_OK;
742 retval = dsp5680xx_convert_address(&address, &pmem);
743 err_check_propagate(retval);
745 dsp5680xx_context.flush = 0;
746 int counter = FLUSH_COUNT_READ_WRITE;
748 for (unsigned i=0; i<count; i++){
750 dsp5680xx_context.flush = 1;
751 counter = FLUSH_COUNT_FLASH;
756 retval = dsp5680xx_read_16_single(target, address + i/2, &tmp_wrd, pmem);
757 buffer[i] = (uint8_t) (tmp_wrd>>8);
758 buffer[i+1] = (uint8_t) (tmp_wrd&0xff);
762 retval = dsp5680xx_read_16_single(target, address + i, buff16 + i, pmem);
765 retval = dsp5680xx_read_32_single(target, address + 2*i, buff32 + i, pmem);
768 LOG_USER("%s: Invalid read size.",__FUNCTION__);
771 err_check_propagate(retval);
772 dsp5680xx_context.flush = 0;
775 dsp5680xx_context.flush = 1;
776 retval = dsp5680xx_execute_queue();
777 err_check_propagate(retval);
782 static int dsp5680xx_write_16_single(struct target *target, uint32_t address, uint16_t data, uint8_t w_pmem){
784 retval = eonce_move_long_to_r0(target,address);
785 err_check_propagate(retval);
787 retval = eonce_move_value_to_y0(target,data);
788 err_check_propagate(retval);
789 retval = eonce_move_y0_at_pr0_inc(target);
790 err_check_propagate(retval);
792 retval = eonce_move_value_at_r0(target,data);
793 err_check_propagate(retval);
798 static int dsp5680xx_write_32_single(struct target *target, uint32_t address, uint32_t data, int w_pmem){
800 retval = eonce_move_long_to_r0(target,address);
801 err_check_propagate(retval);
802 retval = eonce_move_long_to_y(target,data);
803 err_check_propagate(retval);
805 retval = eonce_move_y0_at_pr0_inc(target);
807 retval = eonce_move_y0_at_r0_inc(target);
808 err_check_propagate(retval);
810 retval = eonce_move_y1_at_pr0_inc(target);
812 retval = eonce_move_y1_at_r0_inc(target);
813 err_check_propagate(retval);
817 static int dsp5680xx_write_8(struct target * target, uint32_t address, uint32_t count, uint8_t * data, int pmem){
818 if(target->state != TARGET_HALTED){
819 LOG_ERROR("%s: Target must be halted.",__FUNCTION__);
823 uint16_t * data_w = (uint16_t *)data;
826 int counter = FLUSH_COUNT_READ_WRITE;
827 for(iter = 0; iter<count/2; iter++){
829 dsp5680xx_context.flush = 1;
830 counter = FLUSH_COUNT_READ_WRITE;
832 retval = dsp5680xx_write_16_single(target,address+iter,data_w[iter], pmem);
833 if(retval != ERROR_OK){
834 LOG_ERROR("%s: Could not write to p:0x%04X",__FUNCTION__,address);
835 dsp5680xx_context.flush = 1;
838 dsp5680xx_context.flush = 0;
840 dsp5680xx_context.flush = 1;
842 // Only one byte left, let's not overwrite the other byte (mem is 16bit)
843 // Need to retrieve the part we do not want to overwrite.
845 if((count==1)||(count%2)){
846 retval = dsp5680xx_read(target,address+iter,1,1,(uint8_t *)&data_old);
847 err_check_propagate(retval);
849 data_old=(((data_old&0xff)<<8)|data[0]);// preserve upper byte
851 data_old=(((data_old&0xff)<<8)|data[2*iter+1]);
852 retval = dsp5680xx_write_16_single(target,address+iter,data_old, pmem);
853 err_check_propagate(retval);
858 static int dsp5680xx_write_16(struct target * target, uint32_t address, uint32_t count, uint16_t * data, int pmem){
859 int retval = ERROR_OK;
860 if(target->state != TARGET_HALTED){
861 retval = ERROR_TARGET_NOT_HALTED;
862 err_check(retval,"Target must be halted.");
865 int counter = FLUSH_COUNT_READ_WRITE;
867 for(iter = 0; iter<count; iter++){
869 dsp5680xx_context.flush = 1;
870 counter = FLUSH_COUNT_READ_WRITE;
872 retval = dsp5680xx_write_16_single(target,address+iter,data[iter], pmem);
873 if(retval != ERROR_OK){
874 LOG_ERROR("%s: Could not write to p:0x%04X",__FUNCTION__,address);
875 dsp5680xx_context.flush = 1;
878 dsp5680xx_context.flush = 0;
880 dsp5680xx_context.flush = 1;
884 static int dsp5680xx_write_32(struct target * target, uint32_t address, uint32_t count, uint32_t * data, int pmem){
885 int retval = ERROR_OK;
886 if(target->state != TARGET_HALTED){
887 retval = ERROR_TARGET_NOT_HALTED;
888 err_check(retval,"Target must be halted.");
891 int counter = FLUSH_COUNT_READ_WRITE;
893 for(iter = 0; iter<count; iter++){
895 dsp5680xx_context.flush = 1;
896 counter = FLUSH_COUNT_READ_WRITE;
898 retval = dsp5680xx_write_32_single(target,address+(iter<<1),data[iter], pmem);
899 if(retval != ERROR_OK){
900 LOG_ERROR("%s: Could not write to p:0x%04X",__FUNCTION__,address);
901 dsp5680xx_context.flush = 1;
904 dsp5680xx_context.flush = 0;
906 dsp5680xx_context.flush = 1;
911 * Writes @buffer to memory.
912 * The parameter @address determines whether @buffer should be written to P: (program) memory or X: (data) memory.
916 * @param size Bytes (1), Half words (2), Words (4).
917 * @param count In bytes.
922 static int dsp5680xx_write(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer){
923 //TODO Cannot write 32bit to odd address, will write 0x12345678 as 0x5678 0x0012
924 if(target->state != TARGET_HALTED){
925 LOG_USER("Target must be halted.");
930 retval = dsp5680xx_convert_address(&address, &p_mem);
931 err_check_propagate(retval);
935 retval = dsp5680xx_write_8(target, address, count,(uint8_t *) buffer, p_mem);
938 retval = dsp5680xx_write_16(target, address, count, (uint16_t *)buffer, p_mem);
941 retval = dsp5680xx_write_32(target, address, count, (uint32_t *)buffer, p_mem);
944 retval = ERROR_TARGET_DATA_ABORT;
945 err_check(retval,"Invalid data size.");
951 static int dsp5680xx_bulk_write_memory(struct target * target,uint32_t address, uint32_t aligned, const uint8_t * buffer){
952 LOG_ERROR("Not implemented yet.");
956 static int dsp5680xx_write_buffer(struct target * target, uint32_t address, uint32_t size, const uint8_t * buffer){
957 if(target->state != TARGET_HALTED){
958 LOG_USER("Target must be halted.");
961 return dsp5680xx_write(target, address, 1, size, buffer);
965 * This function is called by verify_image, it is used to read data from memory.
968 * @param address Word addressing.
969 * @param size In bytes.
974 static int dsp5680xx_read_buffer(struct target * target, uint32_t address, uint32_t size, uint8_t * buffer){
975 if(target->state != TARGET_HALTED){
976 LOG_USER("Target must be halted.");
979 // The "/2" solves the byte/word addressing issue.
980 return dsp5680xx_read(target,address,2,size/2,buffer);
984 * This function is not implemented.
985 * It returns an error in order to get OpenOCD to do read out the data and calculate the CRC, or try a binary comparison.
988 * @param address Start address of the image.
989 * @param size In bytes.
994 static int dsp5680xx_checksum_memory(struct target * target, uint32_t address, uint32_t size, uint32_t * checksum){
999 * Calculates a signature over @word_count words in the data from @buff16. The algorithm used is the same the FM uses, so the @return may be used to compare with the one generated by the FM module, and check if flashing was successful.
1000 * This algorithm is based on the perl script available from the Freescale website at FAQ 25630.
1007 static int perl_crc(uint16_t * buff16,uint32_t word_count){
1008 uint16_t checksum = 0xffff;
1009 uint16_t data,fbmisr;
1011 for(i=0;i<word_count;i++){
1013 fbmisr = (checksum & 2)>>1 ^ (checksum & 4)>>2 ^ (checksum & 16)>>4 ^ (checksum & 0x8000)>>15;
1014 checksum = (data ^ ((checksum << 1) | fbmisr));
1017 for(;!(i&0x80000000);i--){
1019 fbmisr = (checksum & 2)>>1 ^ (checksum & 4)>>2 ^ (checksum & 16)>>4 ^ (checksum & 0x8000)>>15;
1020 checksum = (data ^ ((checksum << 1) | fbmisr));
1026 * Resets the SIM. (System Integration Module).
1032 int dsp5680xx_f_SIM_reset(struct target * target){
1033 int retval = ERROR_OK;
1034 uint16_t sim_cmd = SIM_CMD_RESET;
1036 if(strcmp(target->tap->chip,"dsp568013")==0){
1037 sim_addr = MC568013_SIM_BASE_ADDR+S_FILE_DATA_OFFSET;
1038 retval = dsp5680xx_write(target,sim_addr,1,2,(const uint8_t *)&sim_cmd);
1039 err_check_propagate(retval);
1045 * Halts the core and resets the SIM. (System Integration Module).
1051 static int dsp5680xx_soft_reset_halt(struct target *target){
1052 //TODO is this what this function is expected to do...?
1054 retval = dsp5680xx_halt(target);
1055 err_check_propagate(retval);
1056 retval = dsp5680xx_f_SIM_reset(target);
1057 err_check_propagate(retval);
1061 int dsp5680xx_f_protect_check(struct target * target, uint16_t * protected) {
1064 if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
1065 retval = dsp5680xx_halt(target);
1066 err_check_propagate(retval);
1068 if(protected == NULL){
1069 err_check(ERROR_FAIL,"NULL pointer not valid.");
1071 retval = dsp5680xx_read_16_single(target,HFM_BASE_ADDR|HFM_PROT,&aux,0);
1072 err_check_propagate(retval);
1078 * Executes a command on the FM module. Some commands use the parameters @address and @data, others ignore them.
1081 * @param command Command to execute.
1082 * @param address Command parameter.
1083 * @param data Command parameter.
1084 * @param hfm_ustat FM status register.
1085 * @param pmem Address is P: (program) memory (@pmem==1) or X: (data) memory (@pmem==0)
1089 static int dsp5680xx_f_execute_command(struct target * target, uint16_t command, uint32_t address, uint32_t data, uint16_t * hfm_ustat, int pmem){
1091 retval = eonce_load_TX_RX_high_to_r0(target);
1092 err_check_propagate(retval);
1093 retval = eonce_move_long_to_r2(target,HFM_BASE_ADDR);
1094 err_check_propagate(retval);
1098 retval = eonce_move_at_r2_disp_to_y0(target,HFM_USTAT); // read HMF_USTAT
1099 err_check_propagate(retval);
1100 retval = eonce_move_y0_at_r0(target);
1101 err_check_propagate(retval);
1102 retval = eonce_rx_upper_data(target,&i);
1103 err_check_propagate(retval);
1104 if((watchdog--)==1){
1105 retval = ERROR_TARGET_FAILURE;
1106 err_check(retval,"FM execute command failed.");
1108 }while (!(i&0x40)); // wait until current command is complete
1110 dsp5680xx_context.flush = 0;
1112 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_CNFG); // write to HFM_CNFG (lock=0, select bank) -- flash_desc.bank&0x03,0x01 == 0x00,0x01 ???
1113 err_check_propagate(retval);
1114 retval = eonce_move_value_at_r2_disp(target,0x04,HFM_USTAT); // write to HMF_USTAT, clear PVIOL, ACCERR & BLANK bits
1115 err_check_propagate(retval);
1116 retval = eonce_move_value_at_r2_disp(target,0x10,HFM_USTAT); // clear only one bit at a time
1117 err_check_propagate(retval);
1118 retval = eonce_move_value_at_r2_disp(target,0x20,HFM_USTAT);
1119 err_check_propagate(retval);
1120 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_PROT); // write to HMF_PROT, clear protection
1121 err_check_propagate(retval);
1122 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_PROTB); // write to HMF_PROTB, clear protection
1123 err_check_propagate(retval);
1124 retval = eonce_move_value_to_y0(target,data);
1125 err_check_propagate(retval);
1126 retval = eonce_move_long_to_r3(target,address); // write to the flash block
1127 err_check_propagate(retval);
1129 retval = eonce_move_y0_at_pr3_inc(target);
1130 err_check_propagate(retval);
1132 retval = eonce_move_y0_at_r3(target);
1133 err_check_propagate(retval);
1135 retval = eonce_move_value_at_r2_disp(target,command,HFM_CMD); // write command to the HFM_CMD reg
1136 err_check_propagate(retval);
1137 retval = eonce_move_value_at_r2_disp(target,0x80,HFM_USTAT); // start the command
1138 err_check_propagate(retval);
1140 dsp5680xx_context.flush = 1;
1141 retval = dsp5680xx_execute_queue();
1142 err_check_propagate(retval);
1146 retval = eonce_move_at_r2_disp_to_y0(target,HFM_USTAT); // read HMF_USTAT
1147 err_check_propagate(retval);
1148 retval = eonce_move_y0_at_r0(target);
1149 err_check_propagate(retval);
1150 retval = eonce_rx_upper_data(target,&i);
1151 err_check_propagate(retval);
1152 if((watchdog--)==1){
1153 retval = ERROR_TARGET_FAILURE;
1154 err_check(retval,"FM execution did not finish.");
1156 }while (!(i&0x40)); // wait until the command is complete
1158 if (i&HFM_USTAT_MASK_PVIOL_ACCER){
1159 retval = ERROR_TARGET_FAILURE;
1160 err_check(retval,"pviol and/or accer bits set. HFM command execution error");
1166 * Prior to the execution of any Flash module command, the Flash module Clock Divider (CLKDIV) register must be initialized. The values of this register determine the speed of the internal Flash Clock (FCLK). FCLK must be in the range of 150kHz ≤ FCLK ≤ 200kHz for proper operation of the Flash module. (Running FCLK too slowly wears out the module, while running it too fast under programs Flash leading to bit errors.)
1172 static int eonce_set_hfmdiv(struct target * target){
1175 retval = eonce_move_long_to_r2(target,HFM_BASE_ADDR);
1176 err_check_propagate(retval);
1177 retval = eonce_load_TX_RX_high_to_r0(target);
1178 err_check_propagate(retval);
1179 retval = eonce_move_at_r2_to_y0(target);// read HFM_CLKD
1180 err_check_propagate(retval);
1181 retval = eonce_move_y0_at_r0(target);
1182 err_check_propagate(retval);
1183 retval = eonce_rx_upper_data(target,&i);
1184 err_check_propagate(retval);
1185 unsigned int hfm_at_wrong_value = 0;
1186 if ((i&0x7f)!=HFM_CLK_DEFAULT) {
1187 LOG_DEBUG("HFM CLK divisor contained incorrect value (0x%02X).",i&0x7f);
1188 hfm_at_wrong_value = 1;
1190 LOG_DEBUG("HFM CLK divisor was already set to correct value (0x%02X).",i&0x7f);
1193 retval = eonce_move_value_at_r2(target,HFM_CLK_DEFAULT); // write HFM_CLKD
1194 err_check_propagate(retval);
1195 retval = eonce_move_at_r2_to_y0(target); // verify HFM_CLKD
1196 err_check_propagate(retval);
1197 retval = eonce_move_y0_at_r0(target);
1198 err_check_propagate(retval);
1199 retval = eonce_rx_upper_data(target,&i);
1200 err_check_propagate(retval);
1201 if (i!=(0x80|(HFM_CLK_DEFAULT&0x7f))) {
1202 retval = ERROR_TARGET_FAILURE;
1203 err_check(retval,"Unable to set HFM CLK divisor.");
1205 if(hfm_at_wrong_value)
1206 LOG_DEBUG("HFM CLK divisor set to 0x%02x.",i&0x7f);
1211 * Executes the FM calculate signature command. The FM will calculate over the data from @address to @address + @words -1. The result is written to a register, then read out by this function and returned in @signature. The value @signature may be compared to the the one returned by perl_crc to verify the flash was written correctly.
1214 * @param address Start of flash array where the signature should be calculated.
1215 * @param words Number of words over which the signature should be calculated.
1216 * @param signature Value calculated by the FM.
1220 static int dsp5680xx_f_signature(struct target * target, uint32_t address, uint32_t words, uint16_t * signature){
1223 if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
1224 retval = eonce_enter_debug_mode(target,NULL);
1225 err_check_propagate(retval);
1227 retval = dsp5680xx_f_execute_command(target,HFM_CALCULATE_DATA_SIGNATURE,address,words,&hfm_ustat,1);
1228 err_check_propagate(retval);
1229 retval = dsp5680xx_read_16_single(target, HFM_BASE_ADDR|HFM_DATA, signature, 0);
1233 int dsp5680xx_f_erase_check(struct target * target, uint8_t * erased,uint32_t sector){
1236 if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
1237 retval = dsp5680xx_halt(target);
1238 err_check_propagate(retval);
1240 // Check if chip is already erased.
1241 retval = dsp5680xx_f_execute_command(target,HFM_ERASE_VERIFY,HFM_FLASH_BASE_ADDR+sector*HFM_SECTOR_SIZE/2,0,&hfm_ustat,1); // blank check
1242 err_check_propagate(retval);
1244 *erased = (uint8_t)(hfm_ustat&HFM_USTAT_MASK_BLANK);
1249 * Executes the FM page erase command.
1252 * @param sector Page to erase.
1253 * @param hfm_ustat FM module status register.
1257 static int erase_sector(struct target * target, int sector, uint16_t * hfm_ustat){
1259 retval = dsp5680xx_f_execute_command(target,HFM_PAGE_ERASE,HFM_FLASH_BASE_ADDR+sector*HFM_SECTOR_SIZE/2,0,hfm_ustat,1);
1260 err_check_propagate(retval);
1265 * Executes the FM mass erase command. Erases the flash array completely.
1268 * @param hfm_ustat FM module status register.
1272 static int mass_erase(struct target * target, uint16_t * hfm_ustat){
1274 retval = dsp5680xx_f_execute_command(target,HFM_MASS_ERASE,0,0,hfm_ustat,1);
1278 int dsp5680xx_f_erase(struct target * target, int first, int last){
1280 if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
1281 retval = dsp5680xx_halt(target);
1282 err_check_propagate(retval);
1284 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1286 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1287 retval = dsp5680xx_f_SIM_reset(target);
1288 err_check_propagate(retval);
1289 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1291 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1292 retval = eonce_set_hfmdiv(target);
1293 err_check_propagate(retval);
1296 int do_mass_erase = ((!(first|last)) || ((first==0)&&(last == (HFM_SECTOR_COUNT-1))));
1299 retval = mass_erase(target,&hfm_ustat);
1300 err_check_propagate(retval);
1301 last = HFM_SECTOR_COUNT-1;
1303 for(int i = first;i<=last;i++){
1304 retval = erase_sector(target,i,&hfm_ustat);
1305 err_check_propagate(retval);
1312 * Algorithm for programming normal p: flash
1313 * Follow state machine from "56F801x Peripheral Reference Manual"@163.
1314 * Registers to set up before calling:
1315 * r0: TX/RX high address.
1316 * r2: FM module base address.
1317 * r3: Destination address in flash.
1319 * hfm_wait: // wait for command to finish
1320 * brclr #0x40,x:(r2+0x13),hfm_wait
1321 * rx_check: // wait for input buffer full
1322 * brclr #0x01,x:(r0-2),rx_check
1323 * move.w x:(r0),y0 // read from Rx buffer
1325 * move.w #0x20,x:(r2+0x14) // write PGM command
1326 * move.w #0x80,x:(r2+0x13) // start the command
1327 * brclr #0x20,X:(R2+0x13),accerr_check // protection violation check
1328 * bfset #0x20,X:(R2+0x13) // clear pviol
1331 * brclr #0x10,X:(R2+0x13),hfm_wait // access error check
1332 * bfset #0x10,X:(R2+0x13) // clear accerr
1333 * bra hfm_wait // loop
1334 *0x00000073 0x8A460013407D brclr #0x40,X:(R2+0x13),*+0
1335 *0x00000076 0xE700 nop
1336 *0x00000077 0xE700 nop
1337 *0x00000078 0x8A44FFFE017B brclr #1,X:(R0-2),*-2
1338 *0x0000007B 0xE700 nop
1339 *0x0000007C 0xF514 move.w X:(R0),Y0
1340 *0x0000007D 0x8563 move.w Y0,P:(R3)+
1341 *0x0000007E 0x864600200014 move.w #0x20,X:(R2+0x14)
1342 *0x00000081 0x864600800013 move.w #0x80,X:(R2+0x13)
1343 *0x00000084 0x8A4600132004 brclr #0x20,X:(R2+0x13),*+7
1344 *0x00000087 0x824600130020 bfset #0x20,X:(R2+0x13)
1345 *0x0000008A 0xA968 bra *-23
1346 *0x0000008B 0x8A4600131065 brclr #0x10,X:(R2+0x13),*-24
1347 *0x0000008E 0x824600130010 bfset #0x10,X:(R2+0x13)
1348 *0x00000091 0xA961 bra *-30
1350 const uint16_t pgm_write_pflash[] = {0x8A46,0x0013,0x407D,0xE700,0xE700,0x8A44,0xFFFE,0x017B,0xE700,0xF514,0x8563,0x8646,0x0020,0x0014,0x8646,0x0080,0x0013,0x8A46,0x0013,0x2004,0x8246,0x0013,0x0020,0xA968,0x8A46,0x0013,0x1065,0x8246,0x0013,0x0010,0xA961};
1351 const uint32_t pgm_write_pflash_length = 31;
1353 int dsp5680xx_f_wr(struct target * target, uint8_t *buffer, uint32_t address, uint32_t count){
1354 int retval = ERROR_OK;
1355 uint16_t* buff16 = (uint16_t *) buffer;
1356 if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
1357 retval = eonce_enter_debug_mode(target,NULL);
1358 err_check_propagate(retval);
1360 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1361 // Download the pgm that flashes.
1362 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1363 uint32_t my_favourite_ram_address = 0x8700; // This seems to be a safe address. This one is the one used by codewarrior in 56801x_flash.cfg
1364 retval = dsp5680xx_write(target, my_favourite_ram_address, 1, pgm_write_pflash_length*2,(uint8_t *) pgm_write_pflash);
1365 err_check_propagate(retval);
1366 retval = dsp5680xx_execute_queue();
1367 err_check_propagate(retval);
1368 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1370 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1371 retval = eonce_set_hfmdiv(target);
1372 err_check_propagate(retval);
1373 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1374 // Setup registers needed by pgm_write_pflash
1375 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1377 dsp5680xx_context.flush = 0;
1379 retval = eonce_move_long_to_r3(target,address); // Destination address to r3
1380 err_check_propagate(retval);
1381 eonce_load_TX_RX_high_to_r0(target); // TX/RX reg address to r0
1382 err_check_propagate(retval);
1383 retval = eonce_move_long_to_r2(target,HFM_BASE_ADDR);// FM base address to r2
1384 err_check_propagate(retval);
1385 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1386 // Run flashing program.
1387 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1388 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_CNFG); // write to HFM_CNFG (lock=0, select bank)
1389 err_check_propagate(retval);
1390 retval = eonce_move_value_at_r2_disp(target,0x04,HFM_USTAT);// write to HMF_USTAT, clear PVIOL, ACCERR & BLANK bits
1391 err_check_propagate(retval);
1392 retval = eonce_move_value_at_r2_disp(target,0x10,HFM_USTAT);// clear only one bit at a time
1393 err_check_propagate(retval);
1394 retval = eonce_move_value_at_r2_disp(target,0x20,HFM_USTAT);
1395 err_check_propagate(retval);
1396 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_PROT);// write to HMF_PROT, clear protection
1397 err_check_propagate(retval);
1398 retval = eonce_move_value_at_r2_disp(target,0x00,HFM_PROTB);// write to HMF_PROTB, clear protection
1399 err_check_propagate(retval);
1401 //TODO implement handling of odd number of words.
1402 retval = ERROR_FAIL;
1403 err_check(retval,"Cannot handle odd number of words.");
1406 dsp5680xx_context.flush = 1;
1407 retval = dsp5680xx_execute_queue();
1408 err_check_propagate(retval);
1410 uint32_t drscan_data;
1411 retval = eonce_tx_upper_data(target,buff16[0],&drscan_data);
1412 err_check_propagate(retval);
1414 retval = dsp5680xx_resume(target,0,my_favourite_ram_address,0,0);
1415 err_check_propagate(retval);
1417 int counter = FLUSH_COUNT_FLASH;
1418 dsp5680xx_context.flush = 0;
1420 for(i=1; (i<count/2)&&(i<HFM_SIZE_WORDS); i++){
1422 dsp5680xx_context.flush = 1;
1423 counter = FLUSH_COUNT_FLASH;
1425 retval = eonce_tx_upper_data(target,buff16[i],&drscan_data);
1426 if(retval!=ERROR_OK){
1427 dsp5680xx_context.flush = 1;
1428 err_check_propagate(retval);
1430 dsp5680xx_context.flush = 0;
1432 dsp5680xx_context.flush = 1;
1433 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1435 // -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1438 retval = dsp5680xx_f_signature(target,address,i,&signature);
1439 err_check_propagate(retval);
1440 pc_crc = perl_crc(buff16,i);
1441 if(pc_crc != signature){
1442 retval = ERROR_FAIL;
1443 err_check(retval,"Flashed data failed CRC check, flash again!");
1448 int dsp5680xx_f_unlock(struct target * target){
1450 if(target->tap->enabled){
1451 //TODO find a way to switch to the master tap here.
1452 LOG_ERROR("Master tap must be enabled to unlock flash.");
1453 return ERROR_TARGET_FAILURE;
1455 uint32_t data_to_shift_in = MASTER_TAP_CMD_FLASH_ERASE;
1456 uint32_t data_shifted_out;
1457 retval = dsp5680xx_irscan(target,&data_to_shift_in,&data_shifted_out,8);
1458 err_check_propagate(retval);
1459 data_to_shift_in = HFM_CLK_DEFAULT;
1460 retval = dsp5680xx_drscan(target,((uint8_t *) & data_to_shift_in),((uint8_t *)&data_shifted_out),8);
1461 err_check_propagate(retval);
1465 int dsp5680xx_f_lock(struct target * target){
1467 uint16_t lock_word[] = {HFM_LOCK_FLASH,HFM_LOCK_FLASH};
1468 retval = dsp5680xx_f_wr(target,(uint8_t *)(lock_word),HFM_LOCK_ADDR_L,4);
1469 err_check_propagate(retval);
1473 static int dsp5680xx_step(struct target * target,int current, uint32_t address, int handle_breakpoints){
1474 err_check(ERROR_FAIL,"Not implemented yet.");
1477 /** Holds methods for dsp5680xx targets. */
1478 struct target_type dsp5680xx_target = {
1479 .name = "dsp5680xx",
1481 .poll = dsp5680xx_poll,
1482 .arch_state = dsp5680xx_arch_state,
1484 .target_request_data = NULL,
1486 .halt = dsp5680xx_halt,
1487 .resume = dsp5680xx_resume,
1488 .step = dsp5680xx_step,
1490 .write_buffer = dsp5680xx_write_buffer,
1491 .read_buffer = dsp5680xx_read_buffer,
1493 .assert_reset = dsp5680xx_assert_reset,
1494 .deassert_reset = dsp5680xx_deassert_reset,
1495 .soft_reset_halt = dsp5680xx_soft_reset_halt,
1497 .read_memory = dsp5680xx_read,
1498 .write_memory = dsp5680xx_write,
1499 .bulk_write_memory = dsp5680xx_bulk_write_memory,
1501 .checksum_memory = dsp5680xx_checksum_memory,
1503 .target_create = dsp5680xx_target_create,
1504 .init_target = dsp5680xx_init_target,