jtag.h

使用JTAG口对AT91R40008芯片进行FLASH编程的程序

//*----------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : jtag.h
//* Object              : Jtag Definition File.
//*
//* 1.0 27/02/02 NL    : Creation
//*----------------------------------------------------------------------------

#ifndef jtag_h
#define jtag_h

#define	READ_DEBUG_STATUS_MASK	0x9
#define	PC_LOADED_MASK	0x8000	

//* Define Watchdog
#define WATCHDOG	1000
#define TIMEOUT		100000
#define NB_TRY		10
#define	ADD_WAIT_STATE	10000

//* Bug correction = add wait states
#define	WAIT_STATE	1
#define NO_WAIT_STATE 0

//* Define registers
#define R0			0x0
#define R1			0x1
#define R2			0x2
#define R3			0x3
#define R4			0x4
#define R5			0x5
#define R6			0x6
#define R7			0x7
#define R8			0x8
#define R9			0x9
#define R10			0xA
#define R11			0xB
#define R12			0xC
#define SP			0xD
#define LR			0xE
#define PC			0xF

//* Define instructions
#define NOP					0xE1A00000
#define READ_REG			0xE58E0000
#define WRITE_REG			0xE59E0000
#define READ_MEM			0xE4901004
#define	READ_MEM_HALFWORD	0xE0D010B4
#define WRITE_MEM			0xE4801004
#define WRITE_MEM_HALFWORD	0xE1C010B4
#define STM					0xE88E0000 //* or 0xE8AE0000
#define LDM					0xE89E0000
#define READ_CPSR			0xE10F0000
#define WRITE_CPSR  		0xE12FF000 
#define BRANCH_PC_5 		0xEAFFFFFB

//* Size of Words to write
#define	WORD		0
#define	HALFWORD	1

//* Define mode
#define USER_MODE		0x10
#define FIQ_MODE		0x11
#define IRQ_MODE		0x12
#define SUPERVISOR_MODE	0x13
#define ABORT_MODE		0x17
#define UNDEF_MODE		0x1B
#define SYSTEM_MODE		0x1F

typedef enum irq_bit {IRQ, NO_IRQ} IRQ_BIT;
typedef enum fiq_bit {FIQ, NO_FIQ} FIQ_BIT;
typedef enum thumb_bit {ARM, THUMB} THUMB_BIT;

//* Global variables
extern u_int	Current_Scan_Chain;


void JTAG_Select_Scan_Chain(u_int sc);
u_int JTAG_Read_Debug_Status(void);
u_int JTAG_Test_Is_Breaked(u_int value);
void JTAG_Execute(u_int instruction, u_int *data);
void JTAG_Nop(void);
void JTAG_Nop_System_Speed(void);
void JTAG_Read_Register(u_char index, u_int *value);
void JTAG_Write_Register(u_char index, u_int value);
void JTAG_Read_CPSR(u_int *value);
void JTAG_Write_CPSR(u_short mode, IRQ_BIT irq, FIQ_BIT fiq, THUMB_BIT thumb);
void JTAG_Analyse_CPSR(u_int value);
void JTAG_Read_Memory(u_int address, u_int *value, u_short halfword, u_short bug);
void JTAG_Write_Memory(u_int address, u_int value, u_short halfword, u_short bug);
void JTAG_Stop(void);
void JTAG_Write_ICEBreaker(u_char address, u_int data);
void JTAG_Read_ICEBreaker(u_char address, u_int *data);
void JTAG_Store_Multiple(u_int address, u_int mask);
void JTAG_Load_Multiple(u_int nb_data, u_int *data);
void JTAG_Go(u_int address);
void JTAG_Save_Context(u_int *context_tab);
u_int Com_Channel_Write_Data(u_int value);
u_int Com_Channel_Read_Data(u_int *value);

#endif /* jtag_h */