示例#1
0
文件: uart.c 项目: AdriDlu/coreboot
/**
 * ipq806x_uart_init - initializes UART
 *
 * Initializes clocks, GPIO and UART controller.
 */
void uart_init(int idx)
{
	/* Note int idx isn't used in this driver. */
	void *dm_base;
	void *gsbi_base;

	dm_base = uart_board_param.uart_dm_base;

	if (read32(MSM_BOOT_UART_DM_CSR(dm_base)) == UART_DM_CLK_RX_TX_BIT_RATE)
		return; /* UART must have been already initialized. */

	gsbi_base = uart_board_param.uart_gsbi_base;
	ipq_configure_gpio(uart_board_param.dbg_uart_gpio,
			   NO_OF_DBG_UART_GPIOS);

	/* Configure the uart clock */
	uart_clock_config(uart_board_param.uart_gsbi,
		uart_board_param.mnd_value.m_value,
		uart_board_param.mnd_value.n_value,
		uart_board_param.mnd_value.d_value,
		0);

	write32(GSBI_CTRL_REG(gsbi_base),
		GSBI_PROTOCOL_CODE_I2C_UART << GSBI_CTRL_REG_PROTOCOL_CODE_S);
	write32(MSM_BOOT_UART_DM_CSR(dm_base), UART_DM_CLK_RX_TX_BIT_RATE);

	/* Intialize UART_DM */
	msm_boot_uart_dm_init(dm_base);
}
示例#2
0
/**
 * @brief ipq40xx_uart_init - initializes UART
 *
 * Initializes clocks, GPIO and UART controller.
 */
void uart_init(int idx)
{
	/* Note int idx isn't used in this driver. */
	void *dm_base;

	dm_base = uart_board_param.uart_dm_base;

	if (read32(MSM_BOOT_UART_DM_CSR(dm_base)) == UART_DM_CLK_RX_TX_BIT_RATE)
		return; /* UART must have been already initialized. */

	ipq_configure_gpio(uart_board_param.dbg_uart_gpio,
			   NO_OF_DBG_UART_GPIOS);

	/* Configure the uart clock */
	uart_clock_config(uart_board_param.blsp_uart,
		uart_board_param.mnd_value.m_value,
		uart_board_param.mnd_value.n_value,
		uart_board_param.mnd_value.d_value);

	write32(MSM_BOOT_UART_DM_CSR(dm_base), UART_DM_CLK_RX_TX_BIT_RATE);

	/* Initialize UART_DM */
	msm_boot_uart_dm_init(dm_base);
}
示例#3
0
/* Configure UART clock - based on the gsbi id */
void clock_config_uart_dm(uint8_t id)
{
	/* Enable gsbi_uart_clk */
	clock_config(UART_DM_CLK_NS_115200,
				 UART_DM_CLK_MD_115200,
				 GSBIn_QUP_APPS_NS(id),
				 GSBIn_QUP_APPS_MD(id));

	/* Configure clock selection register for tx and rx rates.
	 * Selecting 115.2k for both RX and TX.
	 */
	writel(UART_DM_CLK_RX_TX_BIT_RATE, MSM_BOOT_UART_DM_CSR(id));

	/* Enable gsbi_pclk */
	writel(GSBI_HCLK_CTL_CLK_ENA << GSBI_HCLK_CTL_S, GSBIn_HCLK_CTL(id));
}
示例#4
0
static void configure_uart_dm(uart_cfg_t *uart_cfg)
{
	ipq_configure_gpio(uart_cfg->dbg_uart_gpio, NO_OF_DBG_UART_GPIOS);

	uart_clock_config(uart_cfg->base,
			uart_cfg->uart_mnd_value.m_value,
			uart_cfg->uart_mnd_value.n_value,
			uart_cfg->uart_mnd_value.d_value,
			gboard_param->clk_dummy);
	writel(GSBI_PROTOCOL_CODE_I2C_UART <<
			GSBI_CTRL_REG_PROTOCOL_CODE_S,
			GSBI_CTRL_REG(uart_cfg->gsbi_base));
	writel(UART_DM_CLK_RX_TX_BIT_RATE,
			MSM_BOOT_UART_DM_CSR(uart_cfg->uart_dm_base));
	/* Intialize UART_DM */
	msm_boot_uart_dm_init(uart_cfg->uart_dm_base);
}
示例#5
0
文件: uart_dm.c 项目: M1cha/mi2_lk
/* Defining functions that's exposed to outside world and in coformance to
 * existing uart implemention. These functions are being called to initialize
 * UART and print debug messages in bootloader.
 */
void uart_dm_init(uint8_t id, uint32_t gsbi_base, uint32_t uart_dm_base)
{
	static uint8_t port = 0;
	char *data = "Android Bootloader - UART_DM Initialized!!!\n";

	/* Configure the uart clock */
	clock_config_uart_dm(id);
	dsb();

	/* Configure GPIO to provide connectivity between UART block
	   product ports and chip pads */
	gpio_config_uart_dm(id);
	dsb();

	/* Configure GSBI for UART_DM protocol.
	 * I2C on 2 ports, UART (without HS flow control) on the other 2.
	 * This is only on chips that have GSBI block
	 */
	 if(gsbi_base)
		writel(GSBI_PROTOCOL_CODE_I2C_UART <<
			GSBI_CTRL_REG_PROTOCOL_CODE_S,
			GSBI_CTRL_REG(gsbi_base));
	dsb();

	/* Configure clock selection register for tx and rx rates.
	 * Selecting 115.2k for both RX and TX.
	 */
	writel(UART_DM_CLK_RX_TX_BIT_RATE, MSM_BOOT_UART_DM_CSR(uart_dm_base));
	dsb();

	/* Intialize UART_DM */
	msm_boot_uart_dm_init(uart_dm_base);

	msm_boot_uart_dm_write(uart_dm_base, data, 44);

	ASSERT(port < ARRAY_SIZE(port_lookup));
	port_lookup[port++] = uart_dm_base;

	/* Set UART init flag */
	uart_init_flag = 1;
}