arm_io.c File Reference

Include dependency graph for arm_io.c:

Go to the source code of this file.

Functions
static int	arm_code_to_working_area (struct target *target, const uint32_t *code, unsigned code_size, unsigned additional, struct working_area **area)
	Copies code to a working area. More...
int	arm_nandread (struct arm_nand_data *nand, uint8_t *data, uint32_t size)
	Uses an on-chip algorithm for an ARM device to read from a NAND device and store the data into the host machine's memory. More...
int	arm_nandwrite (struct arm_nand_data *nand, uint8_t *data, int size)
	ARM-specific bulk write from buffer to address of 8-bit wide NAND. More...

Function Documentation

arm_code_to_working_area()

static int arm_code_to_working_area ( struct target *  target, const uint32_t *  code, unsigned  code_size, unsigned  additional, struct working_area **  area  )

static

Copies code to a working area.

This will allocate room for the code plus the additional amount requested if the working area pointer is null.

Parameters

target	Pointer to the target to copy code to
code	Pointer to the code area to be copied
code_size	Size of the code being copied
additional	Size of the additional area to be allocated in addition to code
area	Pointer to a pointer to a working area to copy code to

Returns

Success or failure of the operation

Definition at line 33 of file arm_io.c.

References ERROR_NAND_NO_BUFFER, ERROR_OK, LOG_DEBUG, size, target_alloc_working_area(), target_buffer_set_u32_array(), and target_write_memory().

Referenced by arm_nandread(), and arm_nandwrite().

arm_nandread()

int arm_nandread	(	struct arm_nand_data *	nand,
		uint8_t *	data,
		uint32_t	size
	)

Uses an on-chip algorithm for an ARM device to read from a NAND device and store the data into the host machine's memory.

Parameters

nand	Pointer to the arm_nand_data struct that defines the I/O
data	Pointer to the data buffer to store the read data
size	Amount of data to be stored to the buffer.

Returns

Success or failure of the operation

Definition at line 190 of file arm_io.c.

References working_area::address, arm::arch, target::arch_info, ARM_ARCH_V4, arm_code_to_working_area(), ARM_COMMON_MAGIC, ARM_MODE_SVC, ARM_MODE_THREAD, ARM_NAND_READ, ARM_STATE_ARM, ARMV7M_COMMON_MAGIC, buf_set_u32(), arm_nand_data::chunk_size, arm_algorithm::common_magic, armv7m_algorithm::common_magic, arm_nand_data::copy_area, arm_algorithm::core_mode, armv7m_algorithm::core_mode, arm_algorithm::core_state, arm_nand_data::data, destroy_reg_param(), ERROR_OK, init_reg_param(), is_armv7m(), LOG_ERROR, NULL, arm_nand_data::op, PARAM_IN, size, arm_nand_data::target, target_read_buffer(), target_run_algorithm(), target_to_armv7m(), and reg_param::value.

Referenced by at91sam9_read_block_data(), and nuc910_nand_read_block_data().

arm_nandwrite()

int arm_nandwrite	(	struct arm_nand_data *	nand,
		uint8_t *	data,
		int	size
	)

ARM-specific bulk write from buffer to address of 8-bit wide NAND.

For now this supports ARMv4,ARMv5 and ARMv7-M cores.

Enhancements to target_run_algorithm() could enable:

• ARMv6 and ARMv7 cores in ARM mode

Different code fragments could handle:

• 16-bit wide data (needs different setup)

Parameters

nand	Pointer to the arm_nand_data struct that defines the I/O
data	Pointer to the data to be copied to flash
size	Size of the data being copied

Returns

Success or failure of the operation

Definition at line 80 of file arm_io.c.

References working_area::address, arm::arch, target::arch_info, ARM_ARCH_V4, arm_code_to_working_area(), ARM_COMMON_MAGIC, ARM_MODE_SVC, ARM_MODE_THREAD, ARM_NAND_WRITE, ARM_STATE_ARM, ARMV7M_COMMON_MAGIC, buf_set_u32(), arm_nand_data::chunk_size, arm_algorithm::common_magic, armv7m_algorithm::common_magic, arm_nand_data::copy_area, arm_algorithm::core_mode, armv7m_algorithm::core_mode, arm_algorithm::core_state, arm_nand_data::data, destroy_reg_param(), ERROR_OK, init_reg_param(), is_armv7m(), LOG_ERROR, NULL, arm_nand_data::op, PARAM_IN, size, arm_nand_data::target, target_run_algorithm(), target_to_armv7m(), target_write_buffer(), and reg_param::value.

Referenced by at91sam9_write_block_data(), davinci_write_block_data(), nuc910_nand_write_block_data(), and orion_nand_fast_block_write().