1/*
2 * Xilinx UARTLITE bootloader driver
3 *
4 * Copyright (c) 2007 Secret Lab Technologies Ltd.
5 *
6 * This program is free software; you can redistribute  it and/or modify it
7 * under  the terms of  the GNU General  Public License as published by the
8 * Free Software Foundation;  either version 2 of the  License, or (at your
9 * option) any later version.
10 */
11
12#include <linux/types.h>
13#include <asm/serial.h>
14#include <asm/io.h>
15#include <platforms/4xx/xparameters/xparameters.h>
16
17#define UARTLITE_BASEADDR ((void*)(XPAR_UARTLITE_0_BASEADDR))
18
19void
20serial_putc(unsigned long com_port, unsigned char c)
21{
22	while ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x08) != 0); /* spin */
23	out_be32(UARTLITE_BASEADDR + 0x4, c);
24}
25
26unsigned char
27serial_getc(unsigned long com_port)
28{
29	while ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x01) == 0); /* spin */
30	return in_be32(UARTLITE_BASEADDR);
31}
32
33int
34serial_tstc(unsigned long com_port)
35{
36	return ((in_be32(UARTLITE_BASEADDR + 0x8) & 0x01) != 0);
37}
38