uart.c File Reference

#include <device/mmio.h>
#include <boot/coreboot_tables.h>
#include <console/uart.h>
#include <delay.h>
#include <gpio.h>
#include <soc/clock.h>
#include <soc/blsp.h>
#include <soc/ipq_uart.h>
#include <stdint.h>

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Data Structures
struct	uart_params_t

Macros
#define	FIFO_DATA_SIZE   4

Functions
static unsigned int	msm_boot_uart_dm_init_rx_transfer (void *uart_dm_base)
	msm_boot_uart_dm_init_rx_transfer - Init Rx transfer More...
static unsigned int	msm_boot_uart_dm_init (void *uart_dm_base)
	msm_boot_uart_dm_init - initilaizes UART controller More...
void	uart_tx_byte (unsigned int idx, unsigned char data)
static unsigned int	msm_boot_uart_dm_reset (void *base)
	msm_boot_uart_dm_reset - resets UART controller More...
void	uart_init (unsigned int idx)
	ipq40xx_uart_init - initializes UART More...
void	ipq40xx_uart_init (void)
void	uart_tx_flush (unsigned int idx)
	uart_tx_flush - transmits a string of data More...
uint8_t	uart_rx_byte (unsigned int idx)
	ipq40xx_serial_getc - reads a character More...
void	uart_fill_lb (void *data)

Variables
static const uart_params_t	uart_board_param
static int	valid_data = 0
static unsigned int	word = 0

Macro Definition Documentation

FIFO_DATA_SIZE

#define FIFO_DATA_SIZE   4

Definition at line 14 of file uart.c.

Function Documentation

ipq40xx_uart_init()

void ipq40xx_uart_init

(

void

)

Definition at line 224 of file uart.c.

References uart_init().

Referenced by soc_init().

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msm_boot_uart_dm_init()

unsigned int msm_boot_uart_dm_init ( void *  uart_dm_base )

static

msm_boot_uart_dm_init - initilaizes UART controller

Parameters

uart_dm_base

UART controller base address

Definition at line 129 of file uart.c.

References MSM_BOOT_UART_DM_8_N_1_MODE, MSM_BOOT_UART_DM_CR, MSM_BOOT_UART_DM_CR_TX_ENABLE, MSM_BOOT_UART_DM_DMEN, MSM_BOOT_UART_DM_HCR, MSM_BOOT_UART_DM_IMR, MSM_BOOT_UART_DM_IMR_ENABLED, msm_boot_uart_dm_init_rx_transfer(), MSM_BOOT_UART_DM_IPR, MSM_BOOT_UART_DM_IRDA, MSM_BOOT_UART_DM_MR1, MSM_BOOT_UART_DM_MR2, msm_boot_uart_dm_reset(), MSM_BOOT_UART_DM_RFW_VALUE, MSM_BOOT_UART_DM_RFWR, MSM_BOOT_UART_DM_STALE_TIMEOUT_LSB, MSM_BOOT_UART_DM_TFW_VALUE, MSM_BOOT_UART_DM_TFWR, and write32().

Referenced by uart_init().

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msm_boot_uart_dm_init_rx_transfer()

static unsigned int msm_boot_uart_dm_init_rx_transfer ( void *  uart_dm_base )

static

msm_boot_uart_dm_init_rx_transfer - Init Rx transfer

Parameters

uart_dm_base

UART controller base address

Definition at line 59 of file uart.c.

References MSM_BOOT_UART_DM_CMD_RES_STALE_INT, MSM_BOOT_UART_DM_CMD_RESET_RX, MSM_BOOT_UART_DM_CR, MSM_BOOT_UART_DM_CR_RX_ENABLE, MSM_BOOT_UART_DM_DMRX, MSM_BOOT_UART_DM_DMRX_DEF_VALUE, MSM_BOOT_UART_DM_E_SUCCESS, MSM_BOOT_UART_DM_GCMD_ENA_STALE_EVT, and write32().

Referenced by msm_boot_uart_dm_init().

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msm_boot_uart_dm_reset()

static unsigned int msm_boot_uart_dm_reset ( void *  base )

static

msm_boot_uart_dm_reset - resets UART controller

Parameters

base	UART controller base address

Definition at line 113 of file uart.c.

References base, MSM_BOOT_UART_DM_CMD_RES_STALE_INT, MSM_BOOT_UART_DM_CMD_RES_TX_ERR, MSM_BOOT_UART_DM_CMD_RESET_ERR_STAT, MSM_BOOT_UART_DM_CMD_RESET_RX, MSM_BOOT_UART_DM_CMD_RESET_TX, MSM_BOOT_UART_DM_CR, MSM_BOOT_UART_DM_E_SUCCESS, and write32().

Referenced by msm_boot_uart_dm_init().

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uart_fill_lb()

void uart_fill_lb

(

void *

data

)

Definition at line 259 of file uart.c.

References get_uart_baudrate(), lb_add_console(), lb_add_serial(), LB_SERIAL_TYPE_MEMORY_MAPPED, LB_TAG_CONSOLE_SERIAL8250MEM, serial, UART1_DM_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.

Definition at line 198 of file uart.c.

References uart_params_t::blsp_uart, uart_clk_mnd_t::d_value, uart_params_t::dbg_uart_gpio, ipq_configure_gpio(), uart_clk_mnd_t::m_value, uart_params_t::mnd_value, MSM_BOOT_UART_DM_CSR, msm_boot_uart_dm_init(), uart_clk_mnd_t::n_value, NO_OF_DBG_UART_GPIOS, read32(), uart_board_param, uart_clock_config(), uart_params_t::uart_dm_base, UART_DM_CLK_RX_TX_BIT_RATE, and write32().

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uart_rx_byte()

uint8_t uart_rx_byte

(

unsigned int

idx

)

ipq40xx_serial_getc - reads a character

Returns the character read from serial port.

Definition at line 247 of file uart.c.

References valid_data, and word.

uart_tx_byte()

void uart_tx_byte	(	unsigned int	idx,
		unsigned char	data
	)

Definition at line 90 of file uart.c.

References base, MSM_BOOT_UART_DM_NO_CHARS_FOR_TX, MSM_BOOT_UART_DM_SR, MSM_BOOT_UART_DM_SR_TXEMT, MSM_BOOT_UART_DM_TF, read32(), uart_board_param, uart_params_t::uart_dm_base, udelay(), and write32().

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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

Definition at line 233 of file uart.c.

References base, MSM_BOOT_UART_DM_SR, MSM_BOOT_UART_DM_SR_TXEMT, read32(), uart_board_param, and uart_params_t::uart_dm_base.

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Variable Documentation

uart_board_param

const uart_params_t uart_board_param

static

Definition at line 23 of file uart.c.

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

valid_data

int valid_data = 0

static

Definition at line 85 of file uart.c.

Referenced by uart_rx_byte().

word

unsigned int word = 0

static

Definition at line 88 of file uart.c.

Referenced by compute_ip_checksum(), enable_rom(), int1a_handler(), sdram_set_registers(), smbus_read_cmd(), spi_sw_reset(), tegra_i2c_send_recv(), and uart_rx_byte().