79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/*
|
|
* 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__ */
|