uart.c File Reference

#include <types.h>
#include <console/uart.h>
#include <device/mmio.h>
#include <boot/coreboot_tables.h>
#include <soc/ti/am335x/uart.h>

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Macros
#define	EFR_ENHANCED_EN   (1 << 4)
#define	FCR_FIFO_EN   (1 << 0)
#define	MCR_TCR_TLR   (1 << 6)
#define	SYSC_SOFTRESET   (1 << 1)
#define	SYSS_RESETDONE   (1 << 0)
#define	LSR_RXFIFOE   (1 << 0)
#define	LSR_TXFIFOE   (1 << 5)

Functions
static void	am335x_uart_init (struct am335x_uart *uart, uint16_t div)
static unsigned char	am335x_uart_rx_byte (struct am335x_uart *uart)
static void	am335x_uart_tx_byte (struct am335x_uart *uart, unsigned char data)
unsigned int	uart_platform_refclk (void)
uintptr_t	uart_platform_base (unsigned int idx)
void	uart_init (unsigned int idx)
	ipq40xx_uart_init - initializes UART More...
unsigned char	uart_rx_byte (unsigned int idx)
	ipq40xx_serial_getc - reads a character More...
void	uart_tx_byte (unsigned int idx, unsigned char data)
	msm_boot_uart_dm_read - reads a word from the RX FIFO. More...
void	uart_tx_flush (unsigned int idx)
	uart_tx_flush - transmits a string of data More...
void	uart_fill_lb (void *data)

Macro Definition Documentation

EFR_ENHANCED_EN

#define EFR_ENHANCED_EN   (1 << 4)

Definition at line 9 of file uart.c.

FCR_FIFO_EN

#define FCR_FIFO_EN   (1 << 0)

Definition at line 10 of file uart.c.

LSR_RXFIFOE

#define LSR_RXFIFOE   (1 << 0)

Definition at line 15 of file uart.c.

LSR_TXFIFOE

#define LSR_TXFIFOE   (1 << 5)

Definition at line 16 of file uart.c.

MCR_TCR_TLR

#define MCR_TCR_TLR   (1 << 6)

Definition at line 11 of file uart.c.

SYSC_SOFTRESET

#define SYSC_SOFTRESET   (1 << 1)

Definition at line 12 of file uart.c.

SYSS_RESETDONE

#define SYSS_RESETDONE   (1 << 0)

Definition at line 13 of file uart.c.

Function Documentation

am335x_uart_init()

static void am335x_uart_init ( struct am335x_uart *  uart, uint16_t  div  )

static

Definition at line 22 of file uart.c.

References am335x_uart::dlh, am335x_uart::dll, am335x_uart::efr, EFR_ENHANCED_EN, am335x_uart::fcr, FCR_FIFO_EN, am335x_uart::ier, am335x_uart::lcr, am335x_uart::mcr, MCR_TCR_TLR, am335x_uart::mdr1, read16(), am335x_uart::sysc, SYSC_SOFTRESET, am335x_uart::syss, SYSS_RESETDONE, and write16().

Referenced by uart_init().

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am335x_uart_rx_byte()

static unsigned char am335x_uart_rx_byte ( struct am335x_uart *  uart )

static

Definition at line 116 of file uart.c.

References am335x_uart::lsr, LSR_RXFIFOE, read16(), read8(), and am335x_uart::rhr.

Referenced by uart_rx_byte().

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am335x_uart_tx_byte()

static void am335x_uart_tx_byte ( struct am335x_uart *  uart, unsigned char  data  )

static

Definition at line 126 of file uart.c.

References am335x_uart::lsr, LSR_TXFIFOE, read16(), am335x_uart::thr, and write8().

Referenced by uart_tx_byte().

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uart_fill_lb()

void uart_fill_lb

(

void *

data

)

Definition at line 173 of file uart.c.

References get_uart_baudrate(), lb_add_console(), lb_add_serial(), LB_SERIAL_TYPE_MEMORY_MAPPED, LB_TAG_CONSOLE_SERIAL8250MEM, serial, uart_platform_base(), and uart_platform_refclk().

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uart_init()

void uart_init

(

unsigned int

idx

)

ipq40xx_uart_init - initializes UART

Initializes clocks, GPIO and UART controller.

ipq40xx_uart_init - initializes UART

Initializes clocks, GPIO and UART controller.

Definition at line 149 of file uart.c.

References am335x_uart_init(), get_uart_baudrate(), uart_baudrate_divisor(), uart_platform_baseptr(), and uart_platform_refclk().

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uart_platform_base()

uintptr_t uart_platform_base

(

unsigned int

idx

)

Definition at line 138 of file uart.c.

References ARRAY_SIZE, and bases.

uart_platform_refclk()

unsigned int uart_platform_refclk

(

void

)

Definition at line 133 of file uart.c.

uart_rx_byte()

unsigned char uart_rx_byte

(

unsigned int

idx

)

ipq40xx_serial_getc - reads a character

Returns the character read from serial port.

ipq40xx_serial_getc - reads a character

Returns 1 if data available, 0 otherwise ipq806x_serial_getc - reads a character

Returns the character read from serial port.

Definition at line 157 of file uart.c.

References am335x_uart_rx_byte(), and uart_platform_baseptr().

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uart_tx_byte()

void uart_tx_byte	(	unsigned int	idx,
		unsigned char	data
	)

msm_boot_uart_dm_read - reads a word from the RX FIFO.

@data: location where the read data is stored @count: no of valid data in the FIFO @wait: indicates blocking call or not blocking call

Reads a word from the RX FIFO. If no data is available blocks if @wait is true, else returns MSM_BOOT_UART_DM_E_RX_NOT_READY.

Definition at line 163 of file uart.c.

References am335x_uart_tx_byte(), and uart_platform_baseptr().

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uart_tx_flush()

void uart_tx_flush

(

unsigned int

idx

)

uart_tx_flush - transmits a string of data

Parameters

idx	string to transmit

uart_tx_flush - transmits a string of data

Definition at line 169 of file uart.c.