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/*
* arch/arm/mach-at91/include/mach/uncompress.h
*
* Copyright (C) 2003 SAN People
*
* This program 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H
#include <linux/io.h>
#include <linux/atmel_serial.h>
#include <mach/hardware.h>
#if defined(CONFIG_AT91_EARLY_DBGU0)
#define UART_OFFSET AT91_BASE_DBGU0
#elif defined(CONFIG_AT91_EARLY_DBGU1)
#define UART_OFFSET AT91_BASE_DBGU1
#elif defined(CONFIG_AT91_EARLY_USART0)
#define UART_OFFSET AT91_USART0
#elif defined(CONFIG_AT91_EARLY_USART1)
#define UART_OFFSET AT91_USART1
#elif defined(CONFIG_AT91_EARLY_USART2)
#define UART_OFFSET AT91_USART2
#elif defined(CONFIG_AT91_EARLY_USART3)
#define UART_OFFSET AT91_USART3
#elif defined(CONFIG_AT91_EARLY_USART4)
#define UART_OFFSET AT91_USART4
#elif defined(CONFIG_AT91_EARLY_USART5)
#define UART_OFFSET AT91_USART5
#endif
void __iomem *at91_uart;
static inline void arch_decomp_setup(void)
{
#ifdef UART_OFFSET
at91_uart = (void __iomem *) UART_OFFSET; /* physical address */
#endif
}
/*
* The following code assumes the serial port has already been
* initialized by the bootloader. If you didn't setup a port in
* your bootloader then nothing will appear (which might be desired).
*
* This does not append a newline
*/
static void putc(int c)
{
#ifdef UART_OFFSET
while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXRDY))
barrier();
__raw_writel(c, at91_uart + ATMEL_US_THR);
#endif
}
static inline void flush(void)
{
#ifdef UART_OFFSET
/* wait for transmission to complete */
while (!(__raw_readl(at91_uart + ATMEL_US_CSR) & ATMEL_US_TXEMPTY))
barrier();
#endif
}
#define arch_decomp_wdog()
#endif
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