rt-thread/bsp/loongson/ls1cdev/drivers/drv_uart.h

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-05-08     zhuangwei    the first version
 */

#ifndef __DRV_UART_H__
#define __DRV_UART_H__

#include "ls1c.h"
#include <rthw.h>

#define DEV_CLK 252000000 // 252MHz
#define UART_BAUDRATE 115200

#define UART0_BASE          0xBFE40000
//#define UART0_1_BASE      0xBFE41000
#define UART1_BASE          0xBFE44000
#define UART2_BASE          0xBFE48000
#define UART3_BASE          0xBFE4C000
#define UART4_BASE          0xBFE4C400
#define UART5_BASE          0xBFE4C500
#define UART6_BASE          0xBFE4C600
#define UART7_BASE          0xBFE4C700
#define UART8_BASE          0xBFE4C800
#define UART9_BASE          0xBFE4C900
#define UART10_BASE         0xBFE4Ca00
#define UART11_BASE         0xBFE4Cb00

/* UART registers */
#define UART_DAT(base)      HWREG8(base + 0x00)
#define UART_IER(base)      HWREG8(base + 0x01)
#define UART_IIR(base)      HWREG8(base + 0x02)
#define UART_FCR(base)      HWREG8(base + 0x02)
#define UART_LCR(base)      HWREG8(base + 0x03)
#define UART_MCR(base)      HWREG8(base + 0x04)
#define UART_LSR(base)      HWREG8(base + 0x05)
#define UART_MSR(base)      HWREG8(base + 0x06)

#define UART_LSB(base)      HWREG8(base + 0x00)
#define UART_MSB(base)      HWREG8(base + 0x01)

/* UART0 registers */
#define UART0_DAT           HWREG8(UART0_BASE + 0x00)
#define UART0_IER           HWREG8(UART0_BASE + 0x01)
#define UART0_IIR           HWREG8(UART0_BASE + 0x02)
#define UART0_FCR           HWREG8(UART0_BASE + 0x02)
#define UART0_LCR           HWREG8(UART0_BASE + 0x03)
#define UART0_MCR           HWREG8(UART0_BASE + 0x04)
#define UART0_LSR           HWREG8(UART0_BASE + 0x05)
#define UART0_MSR           HWREG8(UART0_BASE + 0x06)

#define UART0_LSB           HWREG8(UART0_BASE + 0x00)
#define UART0_MSB           HWREG8(UART0_BASE + 0x01)

/* UART1 registers */
#define UART1_DAT           HWREG8(UART1_BASE + 0x00)
#define UART1_IER           HWREG8(UART1_BASE + 0x01)
#define UART1_IIR           HWREG8(UART1_BASE + 0x02)
#define UART1_FCR           HWREG8(UART1_BASE + 0x02)
#define UART1_LCR           HWREG8(UART1_BASE + 0x03)
#define UART1_MCR           HWREG8(UART1_BASE + 0x04)
#define UART1_LSR           HWREG8(UART1_BASE + 0x05)
#define UART1_MSR           HWREG8(UART1_BASE + 0x06)

#define UART1_LSB           HWREG8(UART1_BASE + 0x00)
#define UART1_MSB           HWREG8(UART1_BASE + 0x01)

/* UART interrupt enable register value */
#define UARTIER_IME     (1 << 3)
#define UARTIER_ILE     (1 << 2)
#define UARTIER_ITXE    (1 << 1)
#define UARTIER_IRXE    (1 << 0)

/* UART line control register value */
#define UARTLCR_DLAB    (1 << 7)
#define UARTLCR_BCB     (1 << 6)
#define UARTLCR_SPB     (1 << 5)
#define UARTLCR_EPS     (1 << 4)
#define UARTLCR_PE      (1 << 3)
#define UARTLCR_SB      (1 << 2)

/* UART line status register value */
#define UARTLSR_ERROR   (1 << 7)
#define UARTLSR_TE      (1 << 6)
#define UARTLSR_TFE     (1 << 5)
#define UARTLSR_BI      (1 << 4)
#define UARTLSR_FE      (1 << 3)
#define UARTLSR_PE      (1 << 2)
#define UARTLSR_OE      (1 << 1)
#define UARTLSR_DR      (1 << 0)

void rt_hw_uart_init(void);


#endif