uart.h

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#ifndef __UART_H__
#define __UART_H__
 
#if defined(__GNUC__) || defined(__clang__)
#ifndef __cplusplus
#include <stdbool.h>
#endif
#endif
#include <aa64hcode.h>
#include <stdint.h>
#include <aurora.h>
#include <Board/imx8mp/imx8mp.h>
 
#define UART_DR  0x00
#define UART_FR  0x18
#define UART_IBRD 0x24
#define UART_FBRD  0x28
#define UART_LCR_H 0x2C
#define UART_CR  0x30
#define UART_IMSC 0x38
#define UART_ICR  0x44
 
#define UART_FR_TXFF  (1<<5)
#define UART_FR_RXFE  (1<<4)
 
#define UART_CR_UARTEN (1<<0)
#define UART_CR_TXE  (1<<8)
#define UART_CR_RXE  (1<<9)
 
 
#define UART_LCR_H_WLEN_8BIT  (0x3 << 5)
#define UART_LCR_H_FEN  (1<<4)
 
#define UART_IMSC_RXIM (1<<4)
#define UART_IMSC_RTIM  (1 << 6)
 
#define UART0_BASE  UART0
 
 
extern void UARTInitialize();
 
 
/*
 * uartPutc --serial output interface
 * @param s -- String
 */
extern void uartPutc(char c);
 
/*
 * uartPuts --serial output interface
 * @param s -- String
 */
extern void uartPuts(const char* s);
 
extern bool is_uart_initialized();
 
/*
 * UARTDebugOut -- standard text printing function
 * for early kernel using UART
 * @param text -- text to output
 */
AU_EXTERN AU_EXPORT void UARTDebugOut(const char* format, ...);
#endif