#define err_check(retval,err_msg) if(retval != ERROR_OK){LOG_ERROR("%s: %d %s.",__FUNCTION__,__LINE__,err_msg);return retval;}
#define err_check_propagate(retval) if(retval!=ERROR_OK){return retval;}
-// Forward declarations, could try to optimize this.
-static int eonce_instruction_exec(struct target * target, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex, uint8_t * eonce_status);
-static int eonce_load_TX_RX_to_r0(struct target * target);
-static int eonce_enter_debug_mode(struct target * target, uint16_t * eonce_status);
-static int eonce_read_status_reg(struct target * target, uint16_t * data);
-static int eonce_pc_store(struct target * target);
-static int eonce_move_value_to_pc(struct target * target, uint32_t value);
-static int dsp5680xx_jtag_status(struct target *target, uint8_t * status);
-static int dsp5680xx_resume(struct target *target, int current, uint32_t address,int handle_breakpoints, int debug_execution);
-static int dsp5680xx_halt(struct target *target);
-static int dsp5680xx_write(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer);
-
int dsp5680xx_execute_queue(void){
int retval;
retval = jtag_execute_queue();
return retval;
}
-static int eonce_exit_debug_mode(struct target * target,uint8_t * eonce_status){
- int retval;
- retval = eonce_instruction_exec(target,0x1F,0,0,1,eonce_status);
- err_check_propagate(retval);
- return retval;
-}
-
-
static int dsp5680xx_drscan(struct target * target, uint8_t * data_to_shift_into_dr, uint8_t * data_shifted_out_of_dr, int len){
// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
//
//is the casting necessary?
jtag_add_plain_ir_scan(ir_len,(uint8_t *)data_to_shift_into_ir,(uint8_t *)data_shifted_out_of_ir, TAP_IDLE);
if(context.flush){
- retval = dsp5680xx_execute_queue();
- err_check_propagate(retval);
+ retval = dsp5680xx_execute_queue();
+ err_check_propagate(retval);
}
return retval;
}
-static int dsp5680xx_read_core_reg(struct target * target, uint8_t reg_addr, uint16_t * data_read)
-{
- //TODO implement a general version of this which matches what openocd uses.
- int retval;
- uint32_t dummy_data_to_shift_into_dr;
- retval = eonce_instruction_exec(target,reg_addr,1,0,0,NULL);
- err_check_propagate(retval);
- retval = dsp5680xx_drscan(target,(uint8_t *)& dummy_data_to_shift_into_dr,(uint8_t *) data_read, 8);
- err_check_propagate(retval);
- LOG_DEBUG("Reg. data: 0x%02X.",*data_read);
- return retval;
-}
-
-static int dsp5680xx_target_create(struct target *target, Jim_Interp * interp){
- struct dsp5680xx_common *dsp5680xx = calloc(1, sizeof(struct dsp5680xx_common));
- target->arch_info = dsp5680xx;
- return ERROR_OK;
-}
-
-static int dsp5680xx_init_target(struct command_context *cmd_ctx, struct target *target){
- context.stored_pc = 0;
- context.flush = 1;
- LOG_DEBUG("target initiated!");
- //TODO core tap must be enabled before running these commands, currently this is done in the .cfg tcl script.
- return ERROR_OK;
-}
-
-static int dsp5680xx_arch_state(struct target *target){
- LOG_USER("%s not implemented yet.",__FUNCTION__);
- return ERROR_OK;
-}
-
-int dsp5680xx_target_status(struct target * target, uint8_t * jtag_st, uint16_t * eonce_st){
- return target->state;
-}
-
-static int dsp5680xx_assert_reset(struct target *target){
- target->state = TARGET_RESET;
- return ERROR_OK;
-}
-
-static int dsp5680xx_deassert_reset(struct target *target){
- target->state = TARGET_RUNNING;
- return ERROR_OK;
-}
-
-static int dsp5680xx_poll(struct target *target){
- int retval;
- uint8_t jtag_status;
- uint8_t eonce_status;
- uint16_t read_tmp;
- retval = dsp5680xx_jtag_status(target,&jtag_status);
- err_check_propagate(retval);
- if (jtag_status == JTAG_STATUS_DEBUG)
- if (target->state != TARGET_HALTED){
- retval = eonce_enter_debug_mode(target,&read_tmp);
- err_check_propagate(retval);
- eonce_status = (uint8_t) read_tmp;
- if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_DEBUG_M){
- LOG_WARNING("%s: Failed to put EOnCE in debug mode. Is flash locked?...",__FUNCTION__);
- return ERROR_TARGET_FAILURE;
- }else{
- target->state = TARGET_HALTED;
- return ERROR_OK;
- }
- }
- if (jtag_status == JTAG_STATUS_NORMAL){
- if(target->state == TARGET_RESET){
- retval = dsp5680xx_halt(target);
- err_check_propagate(retval);
- retval = eonce_exit_debug_mode(target,&eonce_status);
- err_check_propagate(retval);
- if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
- LOG_WARNING("%s: JTAG running, but cannot make EOnCE run. Try resetting...",__FUNCTION__);
- return ERROR_TARGET_FAILURE;
- }else{
- target->state = TARGET_RUNNING;
- return ERROR_OK;
- }
- }
- if(target->state != TARGET_RUNNING){
- retval = eonce_read_status_reg(target,&read_tmp);
- err_check_propagate(retval);
- eonce_status = (uint8_t) read_tmp;
- if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
- LOG_WARNING("Inconsistent target status. Restart!");
- return ERROR_TARGET_FAILURE;
- }
- }
- target->state = TARGET_RUNNING;
- return ERROR_OK;
- }
- if(jtag_status == JTAG_STATUS_DEAD){
- LOG_ERROR("%s: Cannot communicate with JTAG. Check connection...",__FUNCTION__);
- target->state = TARGET_UNKNOWN;
- return ERROR_TARGET_FAILURE;
- };
- if (target->state == TARGET_UNKNOWN){
- LOG_ERROR("%s: Target status invalid - communication failure",__FUNCTION__);
- return ERROR_TARGET_FAILURE;
- };
- return ERROR_OK;
-}
-
static int dsp5680xx_jtag_status(struct target *target, uint8_t * status){
uint32_t read_from_ir;
uint32_t instr;
return ERROR_OK;
}
-static int eonce_read_status_reg(struct target * target, uint16_t * data){
- int retval;
- retval = dsp5680xx_read_core_reg(target,DSP5680XX_ONCE_OSR,data);
- err_check_propagate(retval);
- return retval;
-}
-
-static int dsp5680xx_halt(struct target *target){
- int retval;
- uint16_t eonce_status;
- if(target->state == TARGET_HALTED){
- LOG_USER("Target already halted.");
- return ERROR_OK;
- }
- retval = eonce_enter_debug_mode(target,&eonce_status);
- err_check_propagate(retval);
- retval = eonce_pc_store(target);
- err_check_propagate(retval);
- //TODO is it useful to store the pc?
- return retval;
-}
-
-static int dsp5680xx_resume(struct target *target, int current, uint32_t address,int handle_breakpoints, int debug_execution){
- if(target->state == TARGET_RUNNING){
- LOG_USER("Target already running.");
- return ERROR_OK;
- }
- int retval;
- uint8_t eonce_status;
- if(!current){
- retval = eonce_move_value_to_pc(target,address);
- err_check_propagate(retval);
- }
-
- int retry = 20;
- while(retry-- > 1){
- retval = eonce_exit_debug_mode(target,&eonce_status );
- err_check_propagate(retval);
- if(eonce_status == DSP5680XX_ONCE_OSCR_NORMAL_M)
- break;
- }
- if(retry == 0){
- retval = ERROR_TARGET_FAILURE;
- err_check(retval,"Failed to resume...");
- }else{
- target->state = TARGET_RUNNING;
- }
- LOG_DEBUG("EOnCE status: 0x%02X.",eonce_status);
- return ERROR_OK;
-}
-
static int jtag_data_read(struct target * target, uint32_t * data_read, int num_bits){
uint32_t bogus_instr;
int retval = dsp5680xx_drscan(target,(uint8_t *) & bogus_instr,(uint8_t *) data_read,num_bits);
#define jtag_data_write24(target,instr,data_read) jtag_data_write(target,instr,24,data_read)
#define jtag_data_write32(target,instr,data_read) jtag_data_write(target,instr,32,data_read)
-static int eonce_enter_debug_mode(struct target * target, uint16_t * eonce_status){
- int retval;
- uint32_t instr = JTAG_INSTR_DEBUG_REQUEST;
- uint32_t ir_out;//not used, just to make jtag happy.
- // Debug request #1
- retval = dsp5680xx_irscan(target,& instr,& ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
- err_check_propagate(retval);
-
- // Enable EOnCE module
- instr = JTAG_INSTR_ENABLE_ONCE;
- //Two rounds of jtag 0x6 (enable eonce) to enable EOnCE.
- retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
- err_check_propagate(retval);
- retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
- err_check_propagate(retval);
- // Verify that debug mode is enabled
- uint16_t data_read_from_dr;
- retval = eonce_read_status_reg(target,&data_read_from_dr);
- err_check_propagate(retval);
- if((data_read_from_dr&0x30) == 0x30){
- LOG_DEBUG("EOnCE successfully entered debug mode.");
- target->state = TARGET_HALTED;
- return ERROR_OK;
- }else{
- retval = ERROR_TARGET_FAILURE;
- err_check(retval,"Failed to set EOnCE module to debug mode.");
- }
- if(eonce_status!=NULL)
- *eonce_status = data_read_from_dr;
- return ERROR_OK;
-}
+/**
+ * Executes DSP instruction.
+ *
+ * @param target
+ * @param instr Instruction to execute.
+ * @param rw
+ * @param go
+ * @param ex
+ * @param eonce_status Value read from the EOnCE status register.
+ *
+ * @return
+ */
static int eonce_instruction_exec(struct target * target, uint8_t instr, uint8_t rw, uint8_t go, uint8_t ex,uint8_t * eonce_status){
int retval;
return retval;
}
-/* Executes DSP instruction */
-/* wrappers for parameter conversion between eonce_execute_instruction and eonce_execute_instructionX */
+///wrappers for parameter conversion between eonce_execute_instruction and eonce_execute_instructionX
+
#define eonce_execute_instruction_1(target,opcode1,opcode2,opcode3) eonce_execute_instruction1(target,opcode1)
#define eonce_execute_instruction_2(target,opcode1,opcode2,opcode3) eonce_execute_instruction2(target,opcode1,opcode2)
#define eonce_execute_instruction_3(target,opcode1,opcode2,opcode3) eonce_execute_instruction3(target,opcode1,opcode2,opcode3)
-/* the macro itself */
#define eonce_execute_instruction(target,words,opcode1,opcode2,opcode3) eonce_execute_instruction_##words(target,opcode1,opcode2,opcode3)
-/* Executes one word DSP instruction */
+/// Executes one word DSP instruction
static int eonce_execute_instruction1(struct target * target, uint16_t opcode){
int retval;
retval = eonce_instruction_exec(target,0x04,0,1,0,NULL);
return retval;
}
-/* Executes two word DSP instruction */
+/// Executes two word DSP instruction
static int eonce_execute_instruction2(struct target * target,uint16_t opcode1, uint16_t opcode2){
int retval;
retval = eonce_instruction_exec(target,0x04,0,0,0,NULL);
return retval;
}
-/* Executes three word DSP instruction */
+/// Executes three word DSP instruction
static int eonce_execute_instruction3(struct target * target, uint16_t opcode1,uint16_t opcode2,uint16_t opcode3){
int retval;
retval = eonce_instruction_exec(target,0x04,0,0,0,NULL);
return retval;
}
-/* --------------- Real-time data exchange --------------- */
-/*
- The EOnCE Transmit (OTX) and Receive (ORX) registers are data memory mapped, each with an upper and lower 16 bit word.
- Transmit and receive directions are defined from the core’s perspective.
- 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.
- Both registers have a combined data memory mapped OTXRXSR which provides indication when each may be accessed.
-ref: eonce_rev.1.0_0208081.pdf@36
+/**
+ * --------------- Real-time data exchange ---------------
+ * The EOnCE Transmit (OTX) and Receive (ORX) registers are data memory mapped, each with an upper and lower 16 bit word.
+ * Transmit and receive directions are defined from the core’s perspective.
+ * 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.
+ * Both registers have a combined data memory mapped OTXRXSR which provides indication when each may be accessed.
+ *ref: eonce_rev.1.0_0208081.pdf@36
*/
+/// writes data into upper ORx register of the target
static int eonce_tx_upper_data(struct target * target, uint16_t data, uint32_t * eonce_status_low){
int retval;
retval = eonce_instruction_exec(target,DSP5680XX_ONCE_ORX1,0,0,0,NULL);
return retval;
}
-/* writes data into lower ORx register of the target */
+/// writes data into lower ORx register of the target
#define eonce_tx_lower_data(target,data) eonce_instruction_exec(target,DSP5680XX_ONCE_ORX,0,0,0,NULL);\
jtag_data_write16(target,data)
return retval;
}
-/* -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -*/
-/* -- -- -- -- --- -- -- -Core Instructions- -- -- -- --- -- -- -- --- -- -*/
-/* -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -*/
-/* move.l #value,r0 */
+/**
+ * -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- --
+ * -- -- -- -- --- -- -- -Core Instructions- -- -- -- --- -- -- -- --- --
+ * -- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- -- -- -- --- --
+ */
+
+/// move.l #value,r0
#define eonce_move_long_to_r0(target,value) eonce_execute_instruction(target,3,0xe418,value&0xffff,value>>16)
-/* move.l #value,n */
+/// move.l #value,n
#define eonce_move_long_to_n(target,value) eonce_execute_instruction(target,3,0xe41e,value&0xffff,value>>16)
-/* move x:(r0),y0 */
+/// move x:(r0),y0
#define eonce_move_at_r0_to_y0(target) eonce_execute_instruction(target,1,0xF514,0,0)
-/* move x:(r0),y1 */
+/// move x:(r0),y1
#define eonce_move_at_r0_to_y1(target) eonce_execute_instruction(target,1,0xF714,0,0)
-/* move.l x:(r0),y */
+/// move.l x:(r0),y
#define eonce_move_long_at_r0_y(target) eonce_execute_instruction(target,1,0xF734,0,0)
-/* move y0,x:(r0) */
+/// move y0,x:(r0)
#define eonce_move_y0_at_r0(target) eonce_execute_instruction(target,1,0xd514,0,0)
-/* bfclr #value,x:(r0) */
+/// bfclr #value,x:(r0)
#define eonce_bfclr_at_r0(target,value) eonce_execute_instruction(target,2,0x8040,value,0)
-/* move #value,y0 */
+/// move #value,y0
#define eonce_move_value_to_y0(target,value) eonce_execute_instruction(target,2,0x8745,value,0)
-/* move.w y0,x:(r0)+ */
+/// move.w y0,x:(r0)+
#define eonce_move_y0_at_r0_inc(target) eonce_execute_instruction(target,1,0xd500,0,0)
-/* move.w y0,p:(r0)+ */
+/// move.w y0,p:(r0)+
#define eonce_move_y0_at_pr0_inc(target) eonce_execute_instruction(target,1,0x8560,0,0)
-/* move.w p:(r0)+,y0 */
+/// move.w p:(r0)+,y0
#define eonce_move_at_pr0_inc_to_y0(target) eonce_execute_instruction(target,1,0x8568,0,0)
-/* move.w p:(r0)+,y1 */
+/// move.w p:(r0)+,y1
#define eonce_move_at_pr0_inc_to_y1(target) eonce_execute_instruction(target,1,0x8768,0,0)
-/* move.l #value,r2 */
+/// move.l #value,r2
#define eonce_move_long_to_r2(target,value) eonce_execute_instruction(target,3,0xe41A,value&0xffff,value>>16)
-/* move y0,x:(r2) */
+/// move y0,x:(r2)
#define eonce_move_y0_at_r2(target) eonce_execute_instruction(target,1,0xd516,0,0)
-/* move.w #<value>,x:(r2) */
+/// move.w #<value>,x:(r2)
#define eonce_move_value_at_r2(target,value) eonce_execute_instruction(target,2,0x8642,value,0)
-/* move.w #<value>,x:(r0) */
+/// move.w #<value>,x:(r0)
#define eonce_move_value_at_r0(target,value) eonce_execute_instruction(target,2,0x8640,value,0)
-/* move.w #<value>,x:(R2+<disp>) */
+/// move.w #<value>,x:(R2+<disp>)
#define eonce_move_value_at_r2_disp(target,value,disp) eonce_execute_instruction(target,3,0x8646,value,disp)
-/* move.w x:(r2),Y0 */
+/// move.w x:(r2),Y0
#define eonce_move_at_r2_to_y0(target) eonce_execute_instruction(target,1,0xF516,0,0)
-/* move.w p:(r2)+,y0 */
+/// move.w p:(r2)+,y0
#define eonce_move_at_pr2_inc_to_y0(target) eonce_execute_instruction(target,1,0x856A,0,0)
-/* move.l #value,r3 */
+/// move.l #value,r3
#define eonce_move_long_to_r1(target,value) eonce_execute_instruction(target,3,0xE419,value&0xffff,value>>16)
-/* move.l #value,r3 */
+/// move.l #value,r3
#define eonce_move_long_to_r3(target,value) eonce_execute_instruction(target,3,0xE41B,value&0xffff,value>>16)
-/* move.w y0,p:(r3)+ */
+/// move.w y0,p:(r3)+
#define eonce_move_y0_at_pr3_inc(target) eonce_execute_instruction(target,1,0x8563,0,0)
-/* move.w y0,x:(r3) */
+/// move.w y0,x:(r3)
#define eonce_move_y0_at_r3(target) eonce_execute_instruction(target,1,0xD503,0,0)
-/* move pc,r4 */
+/// move.l #value,r4
+#define eonce_move_long_to_r4(target,value) eonce_execute_instruction(target,3,0xE41C,value&0xffff,value>>16)
+
+/// move pc,r4
#define eonce_move_pc_to_r4(target) eonce_execute_instruction(target,1,0xE716,0,0)
-/* move.l r4,y */
+/// move.l r4,y
#define eonce_move_r4_to_y(target) eonce_execute_instruction(target,1,0xe764,0,0)
-/* move.w p:(r0)+,y0 */
+/// move.w p:(r0)+,y0
#define eonce_move_at_pr0_inc_to_y0(target) eonce_execute_instruction(target,1,0x8568,0,0)
-/* move.w x:(r0)+,y0 */
+/// move.w x:(r0)+,y0
#define eonce_move_at_r0_inc_to_y0(target) eonce_execute_instruction(target,1,0xf500,0,0)
-/* move x:(r0),y0 */
+/// move x:(r0),y0
#define eonce_move_at_r0_y0(target) eonce_execute_instruction(target,1,0xF514,0,0)
-/* nop */
+/// nop
#define eonce_nop(target) eonce_execute_instruction(target,1,0xe700,0,0)
-/* move.w x:(R2+<disp>),Y0 */
+/// move.w x:(R2+<disp>),Y0
#define eonce_move_at_r2_disp_to_y0(target,disp) eonce_execute_instruction(target,2,0xF542,disp,0)
-/* move.w y1,x:(r2) */
+/// move.w y1,x:(r2)
#define eonce_move_y1_at_r2(target) eonce_execute_instruction(target,1,0xd716,0,0)
-/* move.w y1,x:(r0) */
+/// move.w y1,x:(r0)
#define eonce_move_y1_at_r0(target) eonce_execute_instruction(target,1,0xd714,0,0)
-/* move.bp y0,x:(r0)+ */
+/// move.bp y0,x:(r0)+
#define eonce_move_byte_y0_at_r0(target) eonce_execute_instruction(target,1,0xd5a0,0,0)
-/* move.w y1,p:(r0)+ */
+/// move.w y1,p:(r0)+
#define eonce_move_y1_at_pr0_inc(target) eonce_execute_instruction(target,1,0x8760,0,0)
-/* move.w y1,x:(r0)+ */
+/// move.w y1,x:(r0)+
#define eonce_move_y1_at_r0_inc(target) eonce_execute_instruction(target,1,0xD700,0,0)
-/* move.l #value,y */
+/// move.l #value,y
#define eonce_move_long_to_y(target,value) eonce_execute_instruction(target,3,0xe417,value&0xffff,value>>16)
-static int eonce_move_value_to_pc(struct target * target, uint32_t value)
-{
+static int eonce_move_value_to_pc(struct target * target, uint32_t value){
if (!(target->state == TARGET_HALTED)){
LOG_ERROR("Target must be halted to move PC. Target state = %d.",target->state);
return ERROR_TARGET_NOT_HALTED;
return retval;
}
+static int dsp5680xx_read_core_reg(struct target * target, uint8_t reg_addr, uint16_t * data_read)
+{
+ //TODO implement a general version of this which matches what openocd uses.
+ int retval;
+ uint32_t dummy_data_to_shift_into_dr;
+ retval = eonce_instruction_exec(target,reg_addr,1,0,0,NULL);
+ err_check_propagate(retval);
+ retval = dsp5680xx_drscan(target,(uint8_t *)& dummy_data_to_shift_into_dr,(uint8_t *) data_read, 8);
+ err_check_propagate(retval);
+ LOG_DEBUG("Reg. data: 0x%02X.",*data_read);
+ return retval;
+}
+
+static int eonce_read_status_reg(struct target * target, uint16_t * data){
+ int retval;
+ retval = dsp5680xx_read_core_reg(target,DSP5680XX_ONCE_OSR,data);
+ err_check_propagate(retval);
+ return retval;
+}
+
+/**
+ * Takes the core out of debug mode.
+ *
+ * @param target
+ * @param eonce_status Data read from the EOnCE status register.
+ *
+ * @return
+ */
+static int eonce_exit_debug_mode(struct target * target,uint8_t * eonce_status){
+ int retval;
+ retval = eonce_instruction_exec(target,0x1F,0,0,1,eonce_status);
+ err_check_propagate(retval);
+ return retval;
+}
+
+/**
+ * Puts the core into debug mode, enabling the EOnCE module.
+ *
+ * @param target
+ * @param eonce_status Data read from the EOnCE status register.
+ *
+ * @return
+ */
+static int eonce_enter_debug_mode(struct target * target, uint16_t * eonce_status){
+ int retval;
+ uint32_t instr = JTAG_INSTR_DEBUG_REQUEST;
+ uint32_t ir_out;//not used, just to make jtag happy.
+ // Debug request #1
+ retval = dsp5680xx_irscan(target,& instr,& ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
+ err_check_propagate(retval);
+
+ // Enable EOnCE module
+ instr = JTAG_INSTR_ENABLE_ONCE;
+ //Two rounds of jtag 0x6 (enable eonce) to enable EOnCE.
+ retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
+ err_check_propagate(retval);
+ retval = dsp5680xx_irscan(target, & instr, & ir_out,DSP5680XX_JTAG_CORE_TAP_IRLEN);
+ err_check_propagate(retval);
+ // Verify that debug mode is enabled
+ uint16_t data_read_from_dr;
+ retval = eonce_read_status_reg(target,&data_read_from_dr);
+ err_check_propagate(retval);
+ if((data_read_from_dr&0x30) == 0x30){
+ LOG_DEBUG("EOnCE successfully entered debug mode.");
+ target->state = TARGET_HALTED;
+ return ERROR_OK;
+ }else{
+ retval = ERROR_TARGET_FAILURE;
+ err_check(retval,"Failed to set EOnCE module to debug mode.");
+ }
+ if(eonce_status!=NULL)
+ *eonce_status = data_read_from_dr;
+ return ERROR_OK;
+}
+
+/**
+ * Reads the current value of the program counter and stores it.
+ *
+ * @param target
+ *
+ * @return
+ */
static int eonce_pc_store(struct target * target){
uint32_t tmp = 0;
int retval;
return ERROR_OK;
}
+static int dsp5680xx_target_create(struct target *target, Jim_Interp * interp){
+ struct dsp5680xx_common *dsp5680xx = calloc(1, sizeof(struct dsp5680xx_common));
+ target->arch_info = dsp5680xx;
+ return ERROR_OK;
+}
+
+static int dsp5680xx_init_target(struct command_context *cmd_ctx, struct target *target){
+ context.stored_pc = 0;
+ context.flush = 1;
+ LOG_DEBUG("target initiated!");
+ //TODO core tap must be enabled before running these commands, currently this is done in the .cfg tcl script.
+ return ERROR_OK;
+}
+
+static int dsp5680xx_arch_state(struct target *target){
+ LOG_USER("%s not implemented yet.",__FUNCTION__);
+ return ERROR_OK;
+}
+
+int dsp5680xx_target_status(struct target * target, uint8_t * jtag_st, uint16_t * eonce_st){
+ return target->state;
+}
+
+static int dsp5680xx_assert_reset(struct target *target){
+ target->state = TARGET_RESET;
+ return ERROR_OK;
+}
+
+static int dsp5680xx_deassert_reset(struct target *target){
+ target->state = TARGET_RUNNING;
+ return ERROR_OK;
+}
+
+static int dsp5680xx_halt(struct target *target){
+ int retval;
+ uint16_t eonce_status;
+ if(target->state == TARGET_HALTED){
+ LOG_USER("Target already halted.");
+ return ERROR_OK;
+ }
+ retval = eonce_enter_debug_mode(target,&eonce_status);
+ err_check_propagate(retval);
+ retval = eonce_pc_store(target);
+ err_check_propagate(retval);
+ //TODO is it useful to store the pc?
+ return retval;
+}
+
+static int dsp5680xx_poll(struct target *target){
+ int retval;
+ uint8_t jtag_status;
+ uint8_t eonce_status;
+ uint16_t read_tmp;
+ retval = dsp5680xx_jtag_status(target,&jtag_status);
+ err_check_propagate(retval);
+ if (jtag_status == JTAG_STATUS_DEBUG)
+ if (target->state != TARGET_HALTED){
+ retval = eonce_enter_debug_mode(target,&read_tmp);
+ err_check_propagate(retval);
+ eonce_status = (uint8_t) read_tmp;
+ if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_DEBUG_M){
+ LOG_WARNING("%s: Failed to put EOnCE in debug mode. Is flash locked?...",__FUNCTION__);
+ return ERROR_TARGET_FAILURE;
+ }else{
+ target->state = TARGET_HALTED;
+ return ERROR_OK;
+ }
+ }
+ if (jtag_status == JTAG_STATUS_NORMAL){
+ if(target->state == TARGET_RESET){
+ retval = dsp5680xx_halt(target);
+ err_check_propagate(retval);
+ retval = eonce_exit_debug_mode(target,&eonce_status);
+ err_check_propagate(retval);
+ if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
+ LOG_WARNING("%s: JTAG running, but cannot make EOnCE run. Try resetting...",__FUNCTION__);
+ return ERROR_TARGET_FAILURE;
+ }else{
+ target->state = TARGET_RUNNING;
+ return ERROR_OK;
+ }
+ }
+ if(target->state != TARGET_RUNNING){
+ retval = eonce_read_status_reg(target,&read_tmp);
+ err_check_propagate(retval);
+ eonce_status = (uint8_t) read_tmp;
+ if((eonce_status&EONCE_STAT_MASK) != DSP5680XX_ONCE_OSCR_NORMAL_M){
+ LOG_WARNING("Inconsistent target status. Restart!");
+ return ERROR_TARGET_FAILURE;
+ }
+ }
+ target->state = TARGET_RUNNING;
+ return ERROR_OK;
+ }
+ if(jtag_status == JTAG_STATUS_DEAD){
+ LOG_ERROR("%s: Cannot communicate with JTAG. Check connection...",__FUNCTION__);
+ target->state = TARGET_UNKNOWN;
+ return ERROR_TARGET_FAILURE;
+ };
+ if (target->state == TARGET_UNKNOWN){
+ LOG_ERROR("%s: Target status invalid - communication failure",__FUNCTION__);
+ return ERROR_TARGET_FAILURE;
+ };
+ return ERROR_OK;
+}
+
+static int dsp5680xx_resume(struct target *target, int current, uint32_t address,int handle_breakpoints, int debug_execution){
+ if(target->state == TARGET_RUNNING){
+ LOG_USER("Target already running.");
+ return ERROR_OK;
+ }
+ int retval;
+ uint8_t eonce_status;
+ if(!current){
+ retval = eonce_move_value_to_pc(target,address);
+ err_check_propagate(retval);
+ }
+
+ int retry = 20;
+ while(retry-- > 1){
+ retval = eonce_exit_debug_mode(target,&eonce_status );
+ err_check_propagate(retval);
+ if(eonce_status == DSP5680XX_ONCE_OSCR_NORMAL_M)
+ break;
+ }
+ if(retry == 0){
+ retval = ERROR_TARGET_FAILURE;
+ err_check(retval,"Failed to resume...");
+ }else{
+ target->state = TARGET_RUNNING;
+ }
+ LOG_DEBUG("EOnCE status: 0x%02X.",eonce_status);
+ return ERROR_OK;
+}
+
+
+
+
+
+
+/**
+ * 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.
+ * The special case of 0xFFXXXX is not modified, since it allows to read out the memory mapped EOnCE registers.
+ *
+ * @param address
+ * @param pmem
+ *
+ * @return
+ */
static int dsp5680xx_convert_address(uint32_t * address, int * pmem){
// Distinguish data memory (x:) from program memory (p:) by the address.
// Addresses over S_FILE_DATA_OFFSET are considered (x:) memory.
uint16_t tmp;
retval = eonce_rx_upper_data(target,&tmp);
err_check_propagate(retval);
- *data_read = ((tmp<<16) | (*data_read));//This enables opencd crc to succeed, even though it's very slow.
+ *data_read = ((tmp<<16) | (*data_read));//This enables OpenOCD crc to succeed (when it should)
return retval;
}
return retval;
}
-//TODO doxy
static int dsp5680xx_write_16_single(struct target *target, uint32_t address, uint16_t data, uint8_t w_pmem){
int retval = 0;
retval = eonce_move_long_to_r0(target,address);
return retval;
}
-//TODO doxy
static int dsp5680xx_write_32_single(struct target *target, uint32_t address, uint32_t data, int w_pmem){
int retval = 0;
retval = eonce_move_long_to_r0(target,address);
return retval;
}
-//TODO doxy
+/**
+ * Writes @buffer to memory.
+ * The parameter @address determines whether @buffer should be written to P: (program) memory or X: (data) memory.
+ *
+ * @param target
+ * @param address
+ * @param size Bytes (1), Half words (2), Words (4).
+ * @param count In bytes.
+ * @param buffer
+ *
+ * @return
+ */
static int dsp5680xx_write(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer){
//TODO Cannot write 32bit to odd address, will write 0x12345678 as 0x5678 0x0012
if(target->state != TARGET_HALTED){
break;
default:
retval = ERROR_TARGET_DATA_ABORT;
- err_check(retval,"Invalid data size.")
+ err_check(retval,"Invalid data size.");
break;
}
return retval;
return dsp5680xx_write(target, address, 1, size, buffer);
}
+/**
+ * This function is called by verify_image, it is used to read data from memory.
+ *
+ * @param target
+ * @param address Word addressing.
+ * @param size In bytes.
+ * @param buffer
+ *
+ * @return
+ */
static int dsp5680xx_read_buffer(struct target * target, uint32_t address, uint32_t size, uint8_t * buffer){
if(target->state != TARGET_HALTED){
LOG_USER("Target must be halted.");
return ERROR_OK;
}
- // read_buffer is called when the verify_image command is executed.
// The "/2" solves the byte/word addressing issue.
return dsp5680xx_read(target,address,2,size/2,buffer);
}
+/**
+ * This function is not implemented.
+ * It returns an error in order to get OpenOCD to do read out the data and calculate the CRC, or try a binary comparison.
+ *
+ * @param target
+ * @param address Start address of the image.
+ * @param size In bytes.
+ * @param checksum
+ *
+ * @return
+ */
static int dsp5680xx_checksum_memory(struct target * target, uint32_t address, uint32_t size, uint32_t * checksum){
- return ERROR_FAIL;// This will make OpenOCD do the read out the data and verify it.
+ return ERROR_FAIL;
}
-// Data signature algorithm used by the core FM (flash module)
+/**
+ * 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.
+ * This algorithm is based on the perl script available from the Freescale website at FAQ 25630.
+ *
+ * @param buff16
+ * @param word_count
+ *
+ * @return
+ */
static int perl_crc(uint16_t * buff16,uint32_t word_count){
uint16_t checksum = 0xffff;
uint16_t data,fbmisr;
return checksum;
}
+/**
+ * Resets the SIM. (System Integration Module).
+ *
+ * @param target
+ *
+ * @return
+ */
int dsp5680xx_f_SIM_reset(struct target * target){
int retval = ERROR_OK;
uint16_t sim_cmd = SIM_CMD_RESET;
return retval;
}
-//TODO doxy
+/**
+ * Halts the core and resets the SIM. (System Integration Module).
+ *
+ * @param target
+ *
+ * @return
+ */
static int dsp5680xx_soft_reset_halt(struct target *target){
//TODO is this what this function is expected to do...?
int retval;
return retval;
}
+/**
+ * Executes a command on the FM module. Some commands use the parameters @address and @data, others ignore them.
+ *
+ * @param target
+ * @param command Command to execute.
+ * @param address Command parameter.
+ * @param data Command parameter.
+ * @param hfm_ustat FM status register.
+ * @param pmem Address is P: (program) memory (@pmem==1) or X: (data) memory (@pmem==0)
+ *
+ * @return
+ */
static int dsp5680xx_f_execute_command(struct target * target, uint16_t command, uint32_t address, uint32_t data, uint16_t * hfm_ustat, int pmem){
int retval;
retval = eonce_load_TX_RX_high_to_r0(target);
return ERROR_OK;
}
+/**
+ * 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.)
+ *
+ * @param target
+ *
+ * @return
+ */
static int eonce_set_hfmdiv(struct target * target){
uint16_t i;
int retval;
return ERROR_OK;
}
+/**
+ * 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.
+ *
+ * @param target
+ * @param address Start of flash array where the signature should be calculated.
+ * @param words Number of words over which the signature should be calculated.
+ * @param signature Value calculated by the FM.
+ *
+ * @return
+ */
static int dsp5680xx_f_signature(struct target * target, uint32_t address, uint32_t words, uint16_t * signature){
int retval;
uint16_t hfm_ustat;
return retval;
}
+/**
+ * Executes the FM page erase command.
+ *
+ * @param target
+ * @param sector Page to erase.
+ * @param hfm_ustat FM module status register.
+ *
+ * @return
+ */
static int erase_sector(struct target * target, int sector, uint16_t * hfm_ustat){
int retval;
retval = dsp5680xx_f_execute_command(target,HFM_PAGE_ERASE,HFM_FLASH_BASE_ADDR+sector*HFM_SECTOR_SIZE/2,0,hfm_ustat,1);
return retval;
}
+/**
+ * Executes the FM mass erase command. Erases the flash array completely.
+ *
+ * @param target
+ * @param hfm_ustat FM module status register.
+ *
+ * @return
+ */
static int mass_erase(struct target * target, uint16_t * hfm_ustat){
int retval;
retval = dsp5680xx_f_execute_command(target,HFM_MASS_ERASE,0,0,hfm_ustat,1);
}else{
for(int i = first;i<=last;i++){
retval = erase_sector(target,i,&hfm_ustat);
- err_check_propagate(retval);
- }
+ err_check_propagate(retval);
+ }
}
return ERROR_OK;
}
-// Algorithm for programming normal p: flash
-// Follow state machine from "56F801x Peripheral Reference Manual"@163.
-// Registers to set up before calling:
-// r0: TX/RX high address.
-// r2: FM module base address.
-// r3: Destination address in flash.
-//
-// hfm_wait: // wait for command to finish
-// brclr #0x40,x:(r2+0x13),hfm_wait
-// rx_check: // wait for input buffer full
-// brclr #0x01,x:(r0-2),rx_check
-// move.w x:(r0),y0 // read from Rx buffer
-// move.w y0,p:(r3)+
-// move.w #0x20,x:(r2+0x14) // write PGM command
-// move.w #0x80,x:(r2+0x13) // start the command
-// brclr #0x20,X:(R2+0x13),accerr_check // protection violation check
-// bfset #0x20,X:(R2+0x13) // clear pviol
-// bra hfm_wait
-// accerr_check:
-// brclr #0x10,X:(R2+0x13),hfm_wait // access error check
-// bfset #0x10,X:(R2+0x13) // clear accerr
-// bra hfm_wait // loop
-//0x00000073 0x8A460013407D brclr #0x40,X:(R2+0x13),*+0
-//0x00000076 0xE700 nop
-//0x00000077 0xE700 nop
-//0x00000078 0x8A44FFFE017B brclr #1,X:(R0-2),*-2
-//0x0000007B 0xE700 nop
-//0x0000007C 0xF514 move.w X:(R0),Y0
-//0x0000007D 0x8563 move.w Y0,P:(R3)+
-//0x0000007E 0x864600200014 move.w #0x20,X:(R2+0x14)
-//0x00000081 0x864600800013 move.w #0x80,X:(R2+0x13)
-//0x00000084 0x8A4600132004 brclr #0x20,X:(R2+0x13),*+7
-//0x00000087 0x824600130020 bfset #0x20,X:(R2+0x13)
-//0x0000008A 0xA968 bra *-23
-//0x0000008B 0x8A4600131065 brclr #0x10,X:(R2+0x13),*-24
-//0x0000008E 0x824600130010 bfset #0x10,X:(R2+0x13)
-//0x00000091 0xA961 bra *-30
+/**
+ * Algorithm for programming normal p: flash
+ * Follow state machine from "56F801x Peripheral Reference Manual"@163.
+ * Registers to set up before calling:
+* r0: TX/RX high address.
+* r2: FM module base address.
+* r3: Destination address in flash.
+*
+* hfm_wait: // wait for command to finish
+* brclr #0x40,x:(r2+0x13),hfm_wait
+* rx_check: // wait for input buffer full
+* brclr #0x01,x:(r0-2),rx_check
+* move.w x:(r0),y0 // read from Rx buffer
+* move.w y0,p:(r3)+
+* move.w #0x20,x:(r2+0x14) // write PGM command
+* move.w #0x80,x:(r2+0x13) // start the command
+* brclr #0x20,X:(R2+0x13),accerr_check // protection violation check
+* bfset #0x20,X:(R2+0x13) // clear pviol
+* bra hfm_wait
+* accerr_check:
+* brclr #0x10,X:(R2+0x13),hfm_wait // access error check
+* bfset #0x10,X:(R2+0x13) // clear accerr
+* bra hfm_wait // loop
+*0x00000073 0x8A460013407D brclr #0x40,X:(R2+0x13),*+0
+*0x00000076 0xE700 nop
+*0x00000077 0xE700 nop
+*0x00000078 0x8A44FFFE017B brclr #1,X:(R0-2),*-2
+*0x0000007B 0xE700 nop
+*0x0000007C 0xF514 move.w X:(R0),Y0
+*0x0000007D 0x8563 move.w Y0,P:(R3)+
+*0x0000007E 0x864600200014 move.w #0x20,X:(R2+0x14)
+*0x00000081 0x864600800013 move.w #0x80,X:(R2+0x13)
+*0x00000084 0x8A4600132004 brclr #0x20,X:(R2+0x13),*+7
+*0x00000087 0x824600130020 bfset #0x20,X:(R2+0x13)
+*0x0000008A 0xA968 bra *-23
+*0x0000008B 0x8A4600131065 brclr #0x10,X:(R2+0x13),*-24
+*0x0000008E 0x824600130010 bfset #0x10,X:(R2+0x13)
+*0x00000091 0xA961 bra *-30
+*/
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};
const uint32_t pgm_write_pflash_length = 31;
int retval = ERROR_OK;
uint16_t* buff16 = (uint16_t *) buffer;
if (dsp5680xx_target_status(target,NULL,NULL) != TARGET_HALTED){
- retval = dsp5680xx_halt(target);
- err_check_propagate(retval);
+ retval = eonce_enter_debug_mode(target,NULL);
+ err_check_propagate(retval);
}
// -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
// Download the pgm that flashes.
return retval;
}
-
-
int dsp5680xx_f_unlock(struct target * target){
int retval;
if(target->tap->enabled){
projects / openocd / commitdiff