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Data Structures
struct	arc_jtag

Macros
#define	ARC_JTAG_ADDRESS_REG 0xA /* SoC address to access */

#define	ARC_JTAG_AUX_REG 0x1

#define	ARC_JTAG_CMD_NOP 0x3

#define	ARC_JTAG_CORE_REG 0x0

#define	ARC_JTAG_DATA_REG 0xB /* Data read/written from SoC */

#define	ARC_JTAG_READ_FROM_AUX_REG 0x6

#define	ARC_JTAG_READ_FROM_CORE_REG 0x5

#define	ARC_JTAG_READ_FROM_MEMORY 0x4

#define	ARC_JTAG_STAT_RU 0x10

#define	ARC_JTAG_STATUS_REG 0x8

#define	ARC_JTAG_WRITE_TO_AUX_REG 0x2

#define	ARC_JTAG_WRITE_TO_CORE_REG 0x1

#define	ARC_JTAG_WRITE_TO_MEMORY 0x0

#define	ARC_TRANSACTION_CMD_REG 0x9 /* Command to perform */

#define	ARC_TRANSACTION_CMD_REG_LENGTH 4

Functions
int	arc_jtag_read_aux_reg (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, uint32_t *buffer)
	Read AUX registers. More...

int	arc_jtag_read_aux_reg_one (struct arc_jtag jtag_info, uint32_t addr, uint32_t value)
	Wrapper function to ease reading of one AUX register. More...

int	arc_jtag_read_core_reg (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, uint32_t *buffer)
	Read core registers. More...

int	arc_jtag_read_core_reg_one (struct arc_jtag jtag_info, uint32_t addr, uint32_t buffer)
	Wrapper function to ease reading of one core register. More...

int	arc_jtag_read_memory (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, uint32_t buffer, bool slow_memory)
	Read a sequence of 4-byte words from target memory. More...

int	arc_jtag_startup (struct arc_jtag *jtag_info)

int	arc_jtag_status (struct arc_jtag const jtag_info, uint32_t const value)
	Read STATUS register. More...

int	arc_jtag_write_aux_reg (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, const uint32_t *buffer)
	Write AUX registers. More...

int	arc_jtag_write_aux_reg_one (struct arc_jtag *jtag_info, uint32_t addr, uint32_t value)
	Wrapper function to ease writing of one AUX register. More...

int	arc_jtag_write_core_reg (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, const uint32_t *buffer)
	Write core registers. More...

int	arc_jtag_write_core_reg_one (struct arc_jtag *jtag_info, uint32_t addr, const uint32_t buffer)
	Wrapper function to ease writing of one core register. More...

int	arc_jtag_write_memory (struct arc_jtag jtag_info, uint32_t addr, uint32_t count, const uint32_t buffer)
	Write a sequence of 4-byte words into target memory. More...

Macro Definition Documentation

◆ ARC_JTAG_ADDRESS_REG

#define ARC_JTAG_ADDRESS_REG 0xA /* SoC address to access */

Definition at line 19 of file arc_jtag.h.

◆ ARC_JTAG_AUX_REG

#define ARC_JTAG_AUX_REG 0x1

Definition at line 35 of file arc_jtag.h.

◆ ARC_JTAG_CMD_NOP

#define ARC_JTAG_CMD_NOP 0x3

Definition at line 29 of file arc_jtag.h.

◆ ARC_JTAG_CORE_REG

#define ARC_JTAG_CORE_REG 0x0

Definition at line 34 of file arc_jtag.h.

◆ ARC_JTAG_DATA_REG

#define ARC_JTAG_DATA_REG 0xB /* Data read/written from SoC */

Definition at line 20 of file arc_jtag.h.

◆ ARC_JTAG_READ_FROM_AUX_REG

#define ARC_JTAG_READ_FROM_AUX_REG 0x6

Definition at line 32 of file arc_jtag.h.

◆ ARC_JTAG_READ_FROM_CORE_REG

#define ARC_JTAG_READ_FROM_CORE_REG 0x5

Definition at line 31 of file arc_jtag.h.

◆ ARC_JTAG_READ_FROM_MEMORY

#define ARC_JTAG_READ_FROM_MEMORY 0x4

Definition at line 30 of file arc_jtag.h.

◆ ARC_JTAG_STAT_RU

#define ARC_JTAG_STAT_RU 0x10

Definition at line 23 of file arc_jtag.h.

◆ ARC_JTAG_STATUS_REG

#define ARC_JTAG_STATUS_REG 0x8

Definition at line 18 of file arc_jtag.h.

◆ ARC_JTAG_WRITE_TO_AUX_REG

#define ARC_JTAG_WRITE_TO_AUX_REG 0x2

Definition at line 28 of file arc_jtag.h.

◆ ARC_JTAG_WRITE_TO_CORE_REG

#define ARC_JTAG_WRITE_TO_CORE_REG 0x1

Definition at line 27 of file arc_jtag.h.

◆ ARC_JTAG_WRITE_TO_MEMORY

#define ARC_JTAG_WRITE_TO_MEMORY 0x0

Definition at line 26 of file arc_jtag.h.

◆ ARC_TRANSACTION_CMD_REG

#define ARC_TRANSACTION_CMD_REG 0x9 /* Command to perform */

Definition at line 14 of file arc_jtag.h.

◆ ARC_TRANSACTION_CMD_REG_LENGTH

#define ARC_TRANSACTION_CMD_REG_LENGTH 4

Definition at line 15 of file arc_jtag.h.

Function Documentation

◆ arc_jtag_read_aux_reg()

int arc_jtag_read_aux_reg	(	struct arc_jtag *	jtag_info,
		uint32_t *	addr,
		uint32_t	count,
		uint32_t *	buffer
	)

Read AUX registers.

addr is an array of addresses, and those addresses can be in any order, though it is recommended that they are in sequential order where possible, as this reduces number of JTAG commands to transfer.

Parameters

jtag_info
addr	Array of AUX register numbers.
count	Amount of registers in arrays.
buffer	Array of register values.

Definition at line 414 of file arc_jtag.c.

References addr, ARC_JTAG_AUX_REG, arc_jtag_read_registers(), buffer, and count.

Referenced by arc_jtag_read_aux_reg_one(), and arc_save_context().

◆ arc_jtag_read_aux_reg_one()

int arc_jtag_read_aux_reg_one	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		uint32_t *	value
	)

Wrapper function to ease reading of one AUX register.

Definition at line 398 of file arc_jtag.c.

References addr, and arc_jtag_read_aux_reg().

Referenced by arc_config_step(), arc_dcache_flush(), arc_dcache_invalidate(), arc_enable_interrupts(), arc_get_register(), arc_halt(), arc_l2cache_flush(), arc_l2cache_invalidate(), arc_resume(), jim_arc_get_aux_reg(), and zephyr_create().

◆ arc_jtag_read_core_reg()

int arc_jtag_read_core_reg	(	struct arc_jtag *	jtag_info,
		uint32_t *	addr,
		uint32_t	count,
		uint32_t *	buffer
	)

Read core registers.

addr is an array of addresses, and those addresses can be in any order, though it is recommended that they are in sequential order where possible, as this reduces number of JTAG commands to transfer.

Parameters

jtag_info
addr	Array of core register numbers.
count	Amount of registers in arrays.
buffer	Array of register values.

Definition at line 366 of file arc_jtag.c.

References addr, ARC_JTAG_CORE_REG, arc_jtag_read_registers(), buffer, and count.

Referenced by arc_jtag_read_core_reg_one(), and arc_save_context().

◆ arc_jtag_read_core_reg_one()

int arc_jtag_read_core_reg_one	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		uint32_t *	buffer
	)

Wrapper function to ease reading of one core register.

Definition at line 350 of file arc_jtag.c.

References addr, and arc_jtag_read_core_reg().

Referenced by arc_get_register(), and jim_arc_get_core_reg().

◆ arc_jtag_read_memory()

int arc_jtag_read_memory	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		uint32_t	count,
		uint32_t *	buffer,
		bool	slow_memory
	)

Read a sequence of 4-byte words from target memory.

We can read only 4byte words via JTAG.

This function read directly from the memory, so it can read invalid data if data cache hasn't been flushed before hand. It is responsibility of upper level to resolve this.

Parameters

jtag_info
addr	Address of first word to read from.
count	Amount of words to read.
buffer	Array of words to read into.
slow_memory	Whether this is a slow memory (DDR) or fast (CCM).

Definition at line 484 of file arc_jtag.c.

References addr, ARC_JTAG_ADDRESS_REG, ARC_JTAG_DATA_REG, arc_jtag_enque_read_dr(), arc_jtag_enque_reset_transaction(), arc_jtag_enque_set_transaction(), arc_jtag_enque_write_dr(), arc_jtag_enque_write_ir(), ARC_JTAG_READ_FROM_MEMORY, buf_get_u32(), buffer, count, ERROR_FAIL, ERROR_OK, jtag_execute_queue(), LOG_DEBUG, LOG_ERROR, arc_jtag::tap, TAP_DRPAUSE, and TAP_IDLE.

Referenced by arc_mem_read_block(), arc_mem_write_block16(), and arc_mem_write_block8().

◆ arc_jtag_startup()

int arc_jtag_startup ( struct arc_jtag * jtag_info )

Definition at line 169 of file arc_jtag.c.

References arc_jtag_enque_reset_transaction(), and jtag_execute_queue().

Referenced by arc_examine().

◆ arc_jtag_status()

int arc_jtag_status	(	struct arc_jtag *const	jtag_info,
		uint32_t *const	value
	)

Read STATUS register.

Definition at line 179 of file arc_jtag.c.

References arc_jtag_enque_reset_transaction(), arc_jtag_enque_status_read(), buf_get_u32(), buffer, CHECK_RETVAL, ERROR_OK, jtag_execute_queue(), and arc_jtag::tap.

Referenced by arc_examine(), and arc_poll().

◆ arc_jtag_write_aux_reg()

int arc_jtag_write_aux_reg	(	struct arc_jtag *	jtag_info,
		uint32_t *	addr,
		uint32_t	count,
		const uint32_t *	buffer
	)

Write AUX registers.

addr is an array of addresses, and those addresses can be in any order, though it is recommended that they are in sequential order where possible, as this reduces number of JTAG commands to transfer.

Parameters

jtag_info
addr	Array of registers numbers.
count	Amount of registers in arrays.
buffer	Array of register values.

Definition at line 390 of file arc_jtag.c.

References addr, ARC_JTAG_AUX_REG, arc_jtag_write_registers(), buffer, and count.

Referenced by arc_jtag_write_aux_reg_one(), and arc_restore_context().

◆ arc_jtag_write_aux_reg_one()

int arc_jtag_write_aux_reg_one	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		uint32_t	value
	)

Wrapper function to ease writing of one AUX register.

Definition at line 374 of file arc_jtag.c.

References addr, and arc_jtag_write_aux_reg().

Referenced by arc_config_step(), arc_dcache_flush(), arc_dcache_invalidate(), arc_enable_interrupts(), arc_halt(), arc_icache_invalidate(), arc_l2cache_flush(), arc_l2cache_invalidate(), arc_resume(), and jim_arc_set_aux_reg().

◆ arc_jtag_write_core_reg()

int arc_jtag_write_core_reg	(	struct arc_jtag *	jtag_info,
		uint32_t *	addr,
		uint32_t	count,
		const uint32_t *	buffer
	)

Write core registers.

addr is an array of addresses, and those addresses can be in any order, though it is recommended that they are in sequential order where possible, as this reduces number of JTAG commands to transfer.

Parameters

jtag_info
addr	Array of registers numbers.
count	Amount of registers in arrays.
buffer	Array of register values.

Definition at line 342 of file arc_jtag.c.

References addr, ARC_JTAG_CORE_REG, arc_jtag_write_registers(), buffer, and count.

Referenced by arc_jtag_write_core_reg_one(), and arc_restore_context().

◆ arc_jtag_write_core_reg_one()

int arc_jtag_write_core_reg_one	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		const uint32_t	buffer
	)

Wrapper function to ease writing of one core register.

Definition at line 326 of file arc_jtag.c.

References addr, and arc_jtag_write_core_reg().

◆ arc_jtag_write_memory()

int arc_jtag_write_memory	(	struct arc_jtag *	jtag_info,
		uint32_t	addr,
		uint32_t	count,
		const uint32_t *	buffer
	)

Write a sequence of 4-byte words into target memory.

We can write only 4byte words via JTAG, so any non-word writes should be handled at higher levels by read-modify-write.

This function writes directly to the memory, leaving any caches (if there are any) in inconsistent state. It is responsibility of upper level to resolve this.

Parameters

jtag_info
addr	Address of first word to write into.
count	Amount of word to write.
buffer	Array to write into memory.

Definition at line 436 of file arc_jtag.c.

References addr, ARC_JTAG_ADDRESS_REG, ARC_JTAG_DATA_REG, arc_jtag_enque_reset_transaction(), arc_jtag_enque_set_transaction(), arc_jtag_enque_write_dr(), arc_jtag_enque_write_ir(), ARC_JTAG_WRITE_TO_MEMORY, buffer, count, ERROR_OK, jtag_execute_queue(), LOG_DEBUG, TAP_DRPAUSE, and TAP_IDLE.

Referenced by arc_mem_write_block16(), arc_mem_write_block32(), and arc_mem_write_block8().

Data Structures

Macros

Functions

Macro Definition Documentation

◆ ARC_JTAG_ADDRESS_REG

◆ ARC_JTAG_AUX_REG

◆ ARC_JTAG_CMD_NOP

◆ ARC_JTAG_CORE_REG

◆ ARC_JTAG_DATA_REG

◆ ARC_JTAG_READ_FROM_AUX_REG

◆ ARC_JTAG_READ_FROM_CORE_REG

◆ ARC_JTAG_READ_FROM_MEMORY

◆ ARC_JTAG_STAT_RU

◆ ARC_JTAG_STATUS_REG

◆ ARC_JTAG_WRITE_TO_AUX_REG

◆ ARC_JTAG_WRITE_TO_CORE_REG

◆ ARC_JTAG_WRITE_TO_MEMORY

◆ ARC_TRANSACTION_CMD_REG

◆ ARC_TRANSACTION_CMD_REG_LENGTH

Function Documentation

◆ arc_jtag_read_aux_reg()

◆ arc_jtag_read_aux_reg_one()

◆ arc_jtag_read_core_reg()

◆ arc_jtag_read_core_reg_one()

◆ arc_jtag_read_memory()

◆ arc_jtag_startup()

◆ arc_jtag_status()

◆ arc_jtag_write_aux_reg()

◆ arc_jtag_write_aux_reg_one()

◆ arc_jtag_write_core_reg()

◆ arc_jtag_write_core_reg_one()

◆ arc_jtag_write_memory()