28 lines
714 B
C
28 lines
714 B
C
|
// See LICENSE for license details.
|
||
|
|
|
||
|
|
#ifndef _SIFIVE_UART_H
|
||
|
|
#define _SIFIVE_UART_H
|
||
|
|
|
||
|
|
/* Register offsets */
|
||
|
|
#define UART_REG_TXFIFO 0x00
|
||
|
|
#define UART_REG_RXFIFO 0x04
|
||
|
|
#define UART_REG_TXCTRL 0x08
|
||
|
|
#define UART_REG_RXCTRL 0x0c
|
||
|
|
#define UART_REG_IE 0x10
|
||
|
|
#define UART_REG_IP 0x14
|
||
|
|
#define UART_REG_DIV 0x18
|
||
|
|
|
||
|
|
/* TXCTRL register */
|
||
|
|
#define UART_TXEN 0x1
|
||
|
|
#define UART_TXWM(x) (((x) & 0xffff) << 16)
|
||
|
|
|
||
|
|
/* RXCTRL register */
|
||
|
|
#define UART_RXEN 0x1
|
||
|
|
#define UART_RXWM(x) (((x) & 0xffff) << 16)
|
||
|
|
|
||
|
|
/* IP register */
|
||
|
|
#define UART_IP_TXWM 0x1
|
||
|
|
#define UART_IP_RXWM 0x2
|
||
|
|
|
||
|
|
#endif /* _SIFIVE_UART_H */
|