jt_cortex_ahb.c File Reference

#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/time.h>
#include "dbg_msg.h"
#include "jt_arm.h"
#include "jt_cortex.h"
#include "jt_instr.h"
#include "convert.h"

Functions

• void jtag_cortex_AHB_attach (void)
• void jtag_cortex_AHB_setmodeTar (uint32_t addrInc, uint32_t size, uint32_t address)
• void jtag_cortex_AHB_ReadWordMemory (uint32_t address, int howmanywords, uint32_t *buf)
• uint32_t jtag_cortex_AHB_ReadWord (uint32_t address)
• uint32_t jtag_cortex_AHB_ReadHalfword (uint32_t address)
• uint32_t jtag_cortex_AHB_ReadByte (uint32_t address)
• void jtag_cortex_AHB_WriteMemoryBuf (uint32_t address, int howmanywords, uint32_t *buf)
• void jtag_cortex_AHB_WriteWord (uint32_t address, uint32_t value)
• void jtag_cortex_AHB_WriteHalfword (uint32_t address, uint16_t value)
• void jtag_cortex_AHB_WriteByte (uint32_t address, uint16_t value)

Variables

• static uint32_t currentAddrIncr = 0
• static uint32_t currentSize = 0
• static uint32_t currentTar = 0xFFFFffff

---

Detailed Description

DAP interface for ARM Cortex-M3

---

Function Documentation

void jtag_cortex_AHB_attach

(

void

)

Attach to AHB-AP

1. make sure Debug Power is UP.
2. set default AHB transfer mode (auto. incr. off; 32-Bit size)

Parameters:

-

Returns:

-

References AUTO_INCR_OFF_AP_CONTROL, currentAddrIncr, currentSize, DEFAULT_AHB_AP_CONTROL, jtag_cortex_ApAHB_CtrlRegWrite(), jtag_cortex_ApAHB_IdRegRead(), jtag_cortex_ApAHB_StatRegRead(), jtag_cotrex_DpCtrl_RegWrite(), jtag_cotrex_DpRdBuff_RegRead(), jtag_cotrex_DpStat_RegRead(), and SIZE_WORD_AHB_AP_CONTROL.

Referenced by jtag_cortex_core_restart(), and jtag_test().

void jtag_cortex_AHB_setmodeTar	(	uint32_t	addrInc,
		uint32_t	size,
		uint32_t	address
	)

set AHB transfer mode and taransfer address

Parameters:

	addrInc	Auto Address increment 0, 0x10, 0x20 for off-, single- or packed- mode
	size	transfersize: 0,1,2 for 8-bit, 16-bit or 32-bit
	address

Returns:

-

References AUTO_INCR_OFF_AP_CONTROL, currentAddrIncr, currentSize, currentTar, DEFAULT_AHB_AP_CONTROL, jtag_cortex_ApAHB_CtrlRegWrite(), jtag_cortex_ApAHB_TarRegWrite(), transactionActivate(), transactionCreate(), transactionErase(), transactionGet(), and transaction::uplevel.

Referenced by jtag_cortex_AHB_ReadByte(), jtag_cortex_AHB_ReadHalfword(), jtag_cortex_AHB_ReadWord(), jtag_cortex_AHB_ReadWordMemory(), jtag_cortex_AHB_WriteByte(), jtag_cortex_AHB_WriteHalfword(), jtag_cortex_AHB_WriteMemoryBuf(), jtag_cortex_AHB_WriteWord(), jtag_cortex_core_ApplicationInterruptResetControl_ReadRegister(), jtag_cortex_core_ApplicationInterruptResetControl_WriteRegister(), jtag_cortex_core_BusFaultAddress_ReadRegister(), jtag_cortex_core_BusFaultAddress_WriteRegister(), jtag_cortex_core_ConfigurationControl_ReadRegister(), jtag_cortex_core_ConfigurationControl_WriteRegister(), jtag_cortex_core_CPUID_ReadRegister(), jtag_cortex_core_debugExceptionMonitorControl_ReadRegister(), jtag_cortex_core_debugExceptionMonitorControl_WriteRegister(), jtag_cortex_core_DebugFaultStatus_ReadRegister(), jtag_cortex_core_DebugFaultStatus_WriteRegister(), jtag_cortex_core_debugHaltingControlStatus_ReadRegister(), jtag_cortex_core_debugHaltingControlStatus_WriteRegister(), jtag_cortex_core_HardFaultStatus_ReadRegister(), jtag_cortex_core_HardFaultStatus_WriteRegister(), jtag_cortex_core_MemManageAddress_ReadRegister(), jtag_cortex_core_MemManageAddress_WriteRegister(), jtag_cortex_core_PollDbgState(), jtag_cortex_core_ReadCpuRegs(), jtag_cortex_core_ReadDebugReg(), jtag_cortex_core_restart(), jtag_cortex_core_StopRunningProgram(), jtag_cortex_core_WriteCpuRegs(), jtag_cortex_dwt_comp_RegRead(), jtag_cortex_dwt_comp_RegWrite(), jtag_cortex_dwt_ctrl_RegRead(), jtag_cortex_dwt_ctrl_RegWrite(), jtag_cortex_dwt_function_RegRead(), jtag_cortex_dwt_function_RegWrite(), jtag_cortex_dwt_mask_RegRead(), jtag_cortex_dwt_mask_RegWrite(), jtag_cortex_fpb_comp_RegRead(), jtag_cortex_fpb_comp_RegWrite(), jtag_cortex_fpb_ctrl_RegRead(), jtag_cortex_fpb_ctrl_RegWrite(), and jtag_test().

void jtag_cortex_AHB_ReadWordMemory	(	uint32_t	address,
		int	howmanywords,
		uint32_t *	buf
	)

Read out word memory into the given buffer.

Parameters:

	address	target machine address
	howmanywords	number of words to read
	buf	pointer to destination read buffer (memory at server side)

Returns:

-

References AUTO_INCR_SINGLE_AP_CONTROL, DBG_LEVEL_GDB_ARM_INFO, dbgPrintf(), jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegRead(), jtag_cotrex_DpRdBuff_RegRead(), transaction::parameter, SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionExecute(), transactionGet(), and transaction::uplevel.

Referenced by jtag_arm_ReadWordMemory(), jtag_cortex_core_ReadCpuRegs(), and jtag_test().

uint32_t jtag_cortex_AHB_ReadWord

(

uint32_t

address

)

read single 32-bit data from address

Parameters:

address

target machine address

Returns:

32 bit read value

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegRead(), jtag_cotrex_DpRdBuff_RegRead(), transaction::parameter, SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionExecute(), transactionGet(), and transaction::uplevel.

Referenced by jtag_arm_ReadWord(), jtag_cortex_core_GetBuff(), and jtag_cortex_core_WriteCpuRegs().

uint32_t jtag_cortex_AHB_ReadHalfword

(

uint32_t

address

)

16 Bit Halfword Read

Parameters:

address

target machine address (memory at ARM side)

Returns:

16 bit read value

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegRead(), jtag_cotrex_DpRdBuff_RegRead(), transaction::parameter, SIZE_HALFWORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionExecute(), transactionGet(), and transaction::uplevel.

Referenced by jtag_arm_ReadHalfword().

uint32_t jtag_cortex_AHB_ReadByte

(

uint32_t

address

)

8 Bit Byte Read

Parameters:

address

target machine address (memory at ARM side)

Returns:

8 bit read value

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegRead(), jtag_cotrex_DpRdBuff_RegRead(), transaction::parameter, SIZE_BYTE_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionExecute(), transactionGet(), and transaction::uplevel.

Referenced by jtag_arm_ReadByte(), jtag_cortex_core_GetBuff(), and jtag_cortex_core_PollDbgState().

void jtag_cortex_AHB_WriteMemoryBuf	(	uint32_t	address,
		int	howmanywords,
		uint32_t *	buf
	)

Write back word memory from the given buffer.

Parameters:

	address	target machine address (memory at ARM side)
	howmanywords	number of words to read
	buf	pointer to source write buffer (memory at server side)

Returns:

-

References AUTO_INCR_SINGLE_AP_CONTROL, DBG_LEVEL_GDB_ARM_INFO, dbgPrintf(), jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegWrite(), jtag_eos(), SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionGet(), transactionPenting(), and transaction::uplevel.

Referenced by jtag_arm_WriteMemoryBuf(), jtag_cortex_core_ReadCpuRegs(), and jtag_test().

void jtag_cortex_AHB_WriteWord	(	uint32_t	address,
		uint32_t	value
	)

write single 32-bit data value to address

Parameters:

	address	target machine address (memory at ARM side)
	value	32 bit value to write

Returns:

-

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegWrite(), jtag_eos(), SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionGet(), and transaction::uplevel.

Referenced by jtag_arm_WriteWord(), and jtag_cortex_core_WriteCpuRegs().

void jtag_cortex_AHB_WriteHalfword	(	uint32_t	address,
		uint16_t	value
	)

16-bit memory write

Parameters:

	address	target machine address (memory at ARM side)
	value	16 bit value to write

Returns:

-

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegWrite(), jtag_eos(), SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionGet(), transactionPenting(), and transaction::uplevel.

Referenced by jtag_arm_WriteHalfword().

void jtag_cortex_AHB_WriteByte	(	uint32_t	address,
		uint16_t	value
	)

8-bit memory write

Parameters:

	address	target machine address (memory at ARM side)
	value	8 bit value to write

Returns:

-

References AUTO_INCR_OFF_AP_CONTROL, jtag_cortex_AHB_setmodeTar(), jtag_cortex_ApAHB_DataRegWrite(), jtag_eos(), SIZE_WORD_AHB_AP_CONTROL, transactionActivate(), transactionCreate(), transactionErase(), transactionGet(), transactionPenting(), and transaction::uplevel.

Referenced by jtag_arm_WriteByte(), and jtag_cortex_core_PollDbgState().

---

Variable Documentation

uint32_t currentAddrIncr = 0 [static]

Referenced by jtag_cortex_AHB_attach(), and jtag_cortex_AHB_setmodeTar().

uint32_t currentSize = 0 [static]

Referenced by jtag_cortex_AHB_attach(), and jtag_cortex_AHB_setmodeTar().

uint32_t currentTar = 0xFFFFffff [static]

Referenced by jtag_cortex_AHB_setmodeTar().