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/*
* include/asm-arm/arch-mxc/uncompress.h
*
*
*
* Copyright (C) 1999 ARM Limited
* Copyright (C) Shane Nay (shane@minirl.com)
*
* 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_MXC_UNCOMPRESS_H__
#define __ASM_ARCH_MXC_UNCOMPRESS_H__
#define __MXC_BOOT_UNCOMPRESS
#include <asm/hardware.h>
#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
#define USR2 0x98
#define USR2_TXFE (1<<14)
#define TXR 0x40
#define UCR1 0x80
#define UCR1_UARTEN 1
/*
* The following code assumes the serial port has already been
* initialized by the bootloader. We search for the first enabled
* port in the most probable order. 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 ch)
{
static unsigned long serial_port = 0;
if (unlikely(serial_port == 0)) {
do {
serial_port = UART1_BASE_ADDR;
if (UART(UCR1) & UCR1_UARTEN)
break;
serial_port = UART2_BASE_ADDR;
if (UART(UCR1) & UCR1_UARTEN)
break;
return;
} while (0);
}
while (!(UART(USR2) & USR2_TXFE))
barrier();
UART(TXR) = ch;
}
#define flush() do { } while (0)
/*
* nothing to do
*/
#define arch_decomp_setup()
#define arch_decomp_wdog()
#endif /* __ASM_ARCH_MXC_UNCOMPRESS_H__ */
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