You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
22 lines
372 B
22 lines
372 B
6 years ago
|
#ifndef _RISCV_UART_H
|
||
|
|
#define _RISCV_UART_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
extern volatile uint32_t* uart;
|
||
|
|
|
||
|
|
#define UART_REG_TXFIFO 0
|
||
|
|
#define UART_REG_RXFIFO 1
|
||
|
|
#define UART_REG_TXCTRL 2
|
||
|
|
#define UART_REG_RXCTRL 3
|
||
|
|
#define UART_REG_DIV 4
|
||
|
|
|
||
|
|
#define UART_TXEN 0x1
|
||
|
|
#define UART_RXEN 0x1
|
||
|
|
|
||
|
|
void uart_putchar(uint8_t ch);
|
||
|
|
int uart_getchar();
|
||
|
|
void query_uart(uintptr_t dtb);
|
||
|
|
|
||
|
|
#endif
|