/*
 * Copyright (C) 2011 Antony Pavlov <antonynpavlov@gmail.com>
 *
 * This file is part of barebox.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

/** @file
 *  This File contains declaration for early output support
 */
#ifndef __INCLUDE_ARCH_DEBUG_LL_H__
#define __INCLUDE_ARCH_DEBUG_LL_H__

#include <asm/io.h>
#include <mach/iomap.h>

#define DEBUG_LL_UART_ADDR	TEGRA_UARTA_BASE
#define DEBUG_LL_UART_RSHFT	2

#define rbr		(0 << DEBUG_LL_UART_RSHFT)
#define lsr		(5 << DEBUG_LL_UART_RSHFT)
#define LSR_THRE	0x20	/* Xmit holding register empty */

static inline void PUTC_LL(char ch)
{
	while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE))
		;

	__raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr);
}

#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */
