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/*
* Copyright (C) 2011
* Author: Jan Weitzel <j.weitzel@phytec.de>
* based on arch/arm/mach-versatile/include/mach/debug_ll.h
*
* barebox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* barebox 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.
*/
#ifndef __MACH_DEBUG_LL_H__
#define __MACH_DEBUG_LL_H__
#include <asm/io.h>
#ifdef CONFIG_ARCH_OMAP3
#include <mach/omap3-silicon.h>
#ifdef CONFIG_OMAP3EVM_UART1
#define UART_BASE OMAP_UART1_BASE
#else
#define UART_BASE OMAP_UART3_BASE
#endif
#endif
#ifdef CONFIG_ARCH_OMAP4
#include <mach/omap4-silicon.h>
#define UART_BASE OMAP44XX_UART3_BASE
#endif
#define LSR_THRE 0x20 /* Xmit holding register empty */
#define LSR (5 << 2)
#define THR (0 << 2)
static inline void putc(char c)
{
/* Wait until there is space in the FIFO */
while ((readb(UART_BASE + LSR) & LSR_THRE) == 0);
/* Send the character */
writeb(c, UART_BASE + THR);
/* Wait to make sure it hits the line, in case we die too soon. */
while ((readb(UART_BASE + LSR) & LSR_THRE) == 0);
}
#endif
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