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/*
* arch/arm/mach-lpc32xx/include/mach/uncompress.h
*
* Author: Kevin Wells <kevin.wells@nxp.com>
*
* Copyright (C) 2010 NXP Semiconductors
*
* 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.
*/
#ifndef __ASM_ARM_ARCH_UNCOMPRESS_H
#define __ASM_ARM_ARCH_UNCOMPRESS_H
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/platform.h>
/*
* Uncompress output is hardcoded to standard UART 5
*/
#define UART_FIFO_CTL_TX_RESET (1 << 2)
#define UART_STATUS_TX_MT (1 << 6)
#define _UARTREG(x) (void __iomem *)(LPC32XX_UART5_BASE + (x))
#define LPC32XX_UART_DLLFIFO_O 0x00
#define LPC32XX_UART_IIRFCR_O 0x08
#define LPC32XX_UART_LSR_O 0x14
static inline void putc(int ch)
{
/* Wait for transmit FIFO to empty */
while ((__raw_readl(_UARTREG(LPC32XX_UART_LSR_O)) &
UART_STATUS_TX_MT) == 0)
;
__raw_writel((u32) ch, _UARTREG(LPC32XX_UART_DLLFIFO_O));
}
static inline void flush(void)
{
__raw_writel(__raw_readl(_UARTREG(LPC32XX_UART_IIRFCR_O)) |
UART_FIFO_CTL_TX_RESET, _UARTREG(LPC32XX_UART_IIRFCR_O));
}
/* NULL functions; we don't presently need them */
#define arch_decomp_setup()
#endif