#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/gsbi.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)

void	uart_tx_byte (unsigned int idx, unsigned char data)
	msm_boot_uart_dm_read - reads a word from the RX FIFO. More...

static unsigned int	msm_boot_uart_dm_reset (void *base)

void	uart_init (unsigned int idx)
	ipq806x_uart_init - initializes UART More...

void	ipq806x_uart_init (void)

void	uart_tx_flush (unsigned int idx)
	uart_tx_flush - transmits a string of data @s: string to transmit More...

uint8_t	uart_rx_byte (unsigned int idx)
	uart_can_rx_byte - checks if data available for reading 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

◆ ipq806x_uart_init()

void ipq806x_uart_init ( void )

Definition at line 303 of file uart.c.

References uart_init().

Referenced by soc_init().

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◆ msm_boot_uart_dm_init()

static unsigned int msm_boot_uart_dm_init ( void * uart_dm_base )

static

Definition at line 203 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 57 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

Definition at line 187 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 371 of file uart.c.

◆ uart_init()

void uart_init ( unsigned int idx )

ipq806x_uart_init - initializes UART

ipq40xx_uart_init - initializes UART

Initializes clocks, GPIO and UART controller.

Definition at line 272 of file uart.c.

References uart_clk_mnd_t::d_value, uart_params_t::dbg_uart_gpio, GSBI_CTRL_REG, GSBI_CTRL_REG_PROTOCOL_CODE_S, GSBI_PROTOCOL_CODE_I2C_UART, 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, uart_params_t::uart_gsbi, uart_params_t::uart_gsbi_base, and write32().

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◆ uart_rx_byte()

uint8_t uart_rx_byte ( unsigned int idx )

uart_can_rx_byte - checks if data available for reading

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 354 of file uart.c.

References valid_data, and word.

◆ 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 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 @s: string to transmit

uart_tx_flush - transmits a string of data

Definition at line 319 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

Initial value:

= {
        .uart_dm_base = (void *)UART4_DM_BASE,
        .uart_gsbi_base = (void *)UART_GSBI4_BASE,
        .uart_gsbi = GSBI_4,
        .mnd_value = { 12, 625, 313 },
                .dbg_uart_gpio = {
                        {
                                .gpio = 10,
                                .func = 1,
                                .dir = GPIO_OUTPUT,
                                .pull = GPIO_NO_PULL,
                                .drvstr = GPIO_12MA,
                                .enable = GPIO_DISABLE
                        },
                        {
                                .gpio = 11,
                                .func = 1,
                                .dir = GPIO_INPUT,
                                .pull = GPIO_NO_PULL,
                                .drvstr = GPIO_12MA,
                                .enable = GPIO_DISABLE
                        },
                }
}

Definition at line 28 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 83 of file uart.c.

Referenced by uart_rx_byte().

◆ word

unsigned int word = 0

static

Definition at line 86 of file uart.c.

Referenced by uart_rx_byte().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ FIFO_DATA_SIZE

Function Documentation

◆ ipq806x_uart_init()

◆ msm_boot_uart_dm_init()

◆ msm_boot_uart_dm_init_rx_transfer()

◆ msm_boot_uart_dm_reset()

◆ uart_fill_lb()

◆ uart_init()

◆ uart_rx_byte()

◆ uart_tx_byte()

◆ uart_tx_flush()

Variable Documentation

◆ uart_board_param

◆ valid_data

◆ word