jtag.h

OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI的双核处理器

//=====================================================================  
//      TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION             
// Property of Texas Instruments -- For Unrestricted Internal Use Only   
// Unauthorized reproduction and/or distribution is strictly prohibited  
// This product is protected under copyright law and trade secret law as 
// an unpublished work.Created 1987,(C) Copyright 1997 Texas Instruments.
// All rights reserved.                                                  
//=====================================================================  
/*   Filename       	: jtag.h
     
     Description    	: jtag lib
   
     Project        	: Perseus
   
     Author         	: Didier Ounkowsky
   
   =================================================================*/


#ifndef __JTAG_H
#define __JTAG_H

#include "gpio_reg32.h"
#include "clkrst.h"
#include "global_types.h"
#include "test.h"

#define MPUIO_PIN_FOR_TMS          14// for test
#define MPUIO_PIN_FOR_TDO          15
#define MPUIO_PIN_FOR_TDI          16
#define MPUIO_PIN_FOR_TRST         17
#define MPUIO_PIN_FOR_TCK          18

#define MPUIO_WHICH_MODULE         MPUIO_MODULE_2 

#define OMAP_BIST_LEN              82
#define PERSEUS_BIST_LEN           42

#define OMAP_BIST_IR               0x12
#define PERSEUS_BIST_IR            0x44

#define GOTO_IR_CMD                0x03 // it is 1,1,0,0
#define GOTO_IR_CMD_LEN            4

#define END_IR_CMD                 0x03 // it is 1,1,0
#define END_IR_CMD_LEN             3

#define GOTO_DR_CMD                0x01 // it is 1,0,0
#define GOTO_DR_CMD_LEN            3

#define END_DR_CMD                 0x03 // it is 1,1,0
#define END_DR_CMD_LEN             3


void set_mpuio_config(void); // set clock, direction register

void tck_to_one(void);
void tck_to_zero(void);

void tms_to_one(void);
void tms_to_zero(void);

void tdi_to_one(void);
void tdi_to_zero(void);

void trst_to_one(void);
void trst_to_zero(void);

UWORD8 read_tdo(void);

void exec_command(UWORD8 command, UWORD8 size); // to move in the jtag state machine

void exec_last(UWORD8 command, UWORD8 size, UWORD8 data);

void ir_write(UWORD8 bist_ir); // to write the good value in ir register

void dr_read_write(UWORD8 lenght); // to read and rewrite the dr register 
                                   //(we have to store the results in an array because 
                                   //it can be 82 bits long)

#endif