S3C2410
[Ports]

Functions
void	rt_hw_cpu_icache_enable ()
void	rt_hw_cpu_icache_disable ()
rt_base_t	rt_hw_cpu_icache_status ()
void	rt_hw_cpu_dcache_enable ()
void	rt_hw_cpu_dcache_disable ()
rt_base_t	rt_hw_cpu_dcache_status ()
void	rt_hw_cpu_reset ()
void	rt_hw_cpu_shutdown ()
void	rt_hw_interrupt_init ()
void	rt_hw_interrupt_mask (rt_uint32_t vector)
void	rt_hw_interrupt_umask (rt_uint32_t vector)
void	rt_hw_interrupt_install (rt_uint32_t vector, rt_isr_handler_t new_handler, rt_isr_handler_t *old_handler)
void	rt_serial_init (void)
char	rt_serial_getc ()
void	rt_serial_putc (const char c)
rt_uint8_t *	rt_hw_stack_init (void *tentry, void *parameter, rt_uint8_t *stack_addr, void *texit)
void	rt_hw_show_register (struct rt_hw_register *regs)
void	rt_hw_trap_udef (struct rt_hw_register *regs)
void	rt_hw_trap_swi (struct rt_hw_register *regs)
void	rt_hw_trap_pabt (struct rt_hw_register *regs)
void	rt_hw_trap_dabt (struct rt_hw_register *regs)
void	rt_hw_trap_resv (struct rt_hw_register *regs)

---

Detailed Description

This product is designed to provide hand-held devices and general applications with cost-effective, low-power, and high-performance microcontroller, which includes

• 1.8V int., 3.3V memory, 3.3V external I/O microprocessor with 16KB I-Cache/16KB D-Cache/MMU
• External memory controller (SDRAM Control and Chip Select logic)
• LCD controller (up to 4K color STN and 256K color TFT) with 1-ch LCD-dedicated DMA
• 4-ch DMAs with external request pins
• 3-ch UART (IrDA1.0, 16-Byte Tx FIFO, and 16-Byte Rx FIFO) / 2-ch SPI
• 1-ch multi-master IIC-BUS/1-ch IIS-BUS controller
• SD Host interface version 1.0 & Multi-Media Card Protocol version 2.11 compatible
• 2-port USB Host /1- port USB Device (ver 1.1)
• 4-ch PWM timers & 1-ch internal timer
• Watch Dog Timer
• 117-bit general purpose I/O ports / 24-ch external interrupt source
• Power control: Normal, Slow, Idle and Power-off mode
• 8-ch 10-bit ADC and Touch screen interface
• RTC with calendar function
• On-chip clock generator with PLL

---

Function Documentation

void rt_hw_cpu_dcache_disable

(

void

)

disable D-Cache

void rt_hw_cpu_dcache_enable

(

void

)

enable D-Cache

rt_base_t rt_hw_cpu_dcache_status

(

void

)

return the status of D-Cache

void rt_hw_cpu_icache_disable

(

void

)

disable I-Cache

void rt_hw_cpu_icache_enable

(

void

)

enable I-Cache

rt_base_t rt_hw_cpu_icache_status

(

void

)

return the status of I-Cache

void rt_hw_cpu_reset

(

void

)

reset cpu by dog's time-out

void rt_hw_cpu_shutdown

(

void

)

shutdown CPU

void rt_hw_interrupt_init

(

void

)

This function will initialize hardware interrupt

void rt_hw_interrupt_install	(	rt_uint32_t	vector,
		rt_isr_handler_t	new_handler,
		rt_isr_handler_t *	old_handler
	)

This function will install a interrupt service routine to a interrupt.

Parameters:

	vector	the interrupt number
	new_handler	the interrupt service routine to be installed
	old_handler	the old interrupt service routine

void rt_hw_interrupt_mask

(

rt_uint32_t

vector

)

This function will mask a interrupt.

Parameters:

vector

the interrupt number

void rt_hw_interrupt_umask

(

rt_uint32_t

vector

)

This function will un-mask a interrupt.

Parameters:

vector

the interrupt number

void rt_hw_show_register

(

struct rt_hw_register *

regs

)

this function will show registers of CPU

Parameters:

regs

the registers point

rt_uint8_t* rt_hw_stack_init	(	void *	tentry,
		void *	parameter,
		rt_uint8_t *	stack_addr,
		void *	texit
	)

This function will initialize thread stack

Parameters:

	tentry	the entry of thread
	parameter	the parameter of entry
	stack_addr	the beginning stack address
	texit	the function will be called when thread exit

Returns:

stack address

void rt_hw_trap_dabt

(

struct rt_hw_register *

regs

)

An abort indicates that the current memory access cannot be completed, which occurs during a data access.

Parameters:

regs

system registers

Note:

never invoke this function in application

void rt_hw_trap_pabt

(

struct rt_hw_register *

regs

)

An abort indicates that the current memory access cannot be completed, which occurs during an instruction prefetch.

Parameters:

regs

system registers

Note:

never invoke this function in application

void rt_hw_trap_resv

(

struct rt_hw_register *

regs

)

Normally, system will never reach here

Parameters:

regs

system registers

Note:

never invoke this function in application

void rt_hw_trap_swi

(

struct rt_hw_register *

regs

)

The software interrupt instruction (SWI) is used for entering Supervisor mode, usually to request a particular supervisor function.

Parameters:

regs

system registers

Note:

never invoke this function in application

void rt_hw_trap_udef

(

struct rt_hw_register *

regs

)

When ARM7TDMI comes across an instruction which it cannot handle, it takes the undefined instruction trap.

Parameters:

regs

system registers

Note:

never invoke this function in application

char rt_serial_getc

(

void

)

This function read a character from serial without interrupt enable mode

Returns:

the read char

void rt_serial_init

(

void

)

This function initializes serial

void rt_serial_putc

(

const char

c

)

This function will write a character to serial without interrupt enable mode

Parameters:

c

the char to write