uart8250io.c File Reference

#include <arch/io.h>
#include <boot/coreboot_tables.h>
#include <console/uart.h>
#include "uart8250reg.h"

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Macros
#define	SINGLE_CHAR_TIMEOUT   (50 * 1000)
#define	FIFO_TIMEOUT   (16 * SINGLE_CHAR_TIMEOUT)

Functions
static int	uart8250_can_tx_byte (unsigned int base_port)
static void	uart8250_tx_byte (unsigned int base_port, unsigned char data)
static void	uart8250_tx_flush (unsigned int base_port)
static int	uart8250_can_rx_byte (unsigned int base_port)
static unsigned char	uart8250_rx_byte (unsigned int base_port)
static void	uart8250_init (unsigned int base_port, unsigned int divisor)
uintptr_t	uart_platform_base (unsigned int idx)
void	uart_init (unsigned int idx)
void	uart_tx_byte (unsigned int idx, unsigned char data)
unsigned char	uart_rx_byte (unsigned int idx)
void	uart_tx_flush (unsigned int idx)
void	uart_fill_lb (void *data)

Variables
static const unsigned int	bases [] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }

Macro Definition Documentation

FIFO_TIMEOUT

#define FIFO_TIMEOUT   (16 * SINGLE_CHAR_TIMEOUT)

Definition at line 17 of file uart8250io.c.

SINGLE_CHAR_TIMEOUT

#define SINGLE_CHAR_TIMEOUT   (50 * 1000)

Definition at line 16 of file uart8250io.c.

Function Documentation

uart8250_can_rx_byte()

static int uart8250_can_rx_byte ( unsigned int  base_port )

static

Definition at line 37 of file uart8250io.c.

References inb(), UART8250_LSR, and UART8250_LSR_DR.

Referenced by uart8250_rx_byte().

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uart8250_can_tx_byte()

static int uart8250_can_tx_byte ( unsigned int  base_port )

static

Definition at line 19 of file uart8250io.c.

References inb(), UART8250_LSR, and UART8250_LSR_THRE.

Referenced by uart8250_tx_byte().

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uart8250_init()

static void uart8250_init ( unsigned int  base_port, unsigned int  divisor  )

static

Definition at line 54 of file uart8250io.c.

References outb(), UART8250_DLL, UART8250_DLM, UART8250_FCR, UART8250_FCR_FIFO_EN, UART8250_IER, UART8250_LCR, UART8250_LCR_DLAB, UART8250_MCR, UART8250_MCR_DTR, and UART8250_MCR_RTS.

Referenced by uart_init().

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uart8250_rx_byte()

static unsigned char uart8250_rx_byte ( unsigned int  base_port )

static

Definition at line 42 of file uart8250io.c.

References inb(), SINGLE_CHAR_TIMEOUT, uart8250_can_rx_byte(), and UART8250_RBR.

Referenced by uart_rx_byte().

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uart8250_tx_byte()

static void uart8250_tx_byte ( unsigned int  base_port, unsigned char  data  )

static

Definition at line 24 of file uart8250io.c.

References outb(), SINGLE_CHAR_TIMEOUT, uart8250_can_tx_byte(), and UART8250_TBR.

Referenced by uart_tx_byte().

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uart8250_tx_flush()

static void uart8250_tx_flush ( unsigned int  base_port )

static

Definition at line 31 of file uart8250io.c.

References FIFO_TIMEOUT, inb(), UART8250_LSR, and UART8250_LSR_TEMT.

Referenced by uart_tx_flush().

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uart_fill_lb()

void uart_fill_lb

(

void *

data

)

Definition at line 109 of file uart8250io.c.

References get_uart_baudrate(), lb_add_console(), lb_add_serial(), LB_SERIAL_TYPE_IO_MAPPED, LB_TAG_CONSOLE_SERIAL8250, serial, uart_platform_base(), and uart_platform_refclk().

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uart_init()

void uart_init

(

unsigned int

idx

)

Definition at line 84 of file uart8250io.c.

References CONFIG, get_uart_baudrate(), uart8250_init(), uart_baudrate_divisor(), uart_input_clock_divider(), uart_platform_base(), and uart_platform_refclk().

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uart_platform_base()

uintptr_t uart_platform_base

(

unsigned int

idx

)

Definition at line 77 of file uart8250io.c.

References ARRAY_SIZE, and bases.

Referenced by uart_fill_lb(), uart_init(), uart_rx_byte(), uart_tx_byte(), and uart_tx_flush().

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uart_rx_byte()

unsigned char uart_rx_byte

(

unsigned int

idx

)

Definition at line 99 of file uart8250io.c.

References uart8250_rx_byte(), and uart_platform_base().

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uart_tx_byte()

void uart_tx_byte	(	unsigned int	idx,
		unsigned char	data
	)

Definition at line 94 of file uart8250io.c.

References uart8250_tx_byte(), and uart_platform_base().

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uart_tx_flush()

void uart_tx_flush

(

unsigned int

idx

)

Definition at line 104 of file uart8250io.c.

References uart8250_tx_flush(), and uart_platform_base().

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Variable Documentation

bases

const unsigned int bases[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }

static

Definition at line 75 of file uart8250io.c.

Referenced by mainboard_config_upd(), and uart_platform_base().