original development tree for Linux kernel GTP module; now long in mainline.
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/*
* arch/arm/plat-spear/include/plat/uncompress.h
*
* Serial port stubs for kernel decompress status messages
*
* Copyright (C) 2009 ST Microelectronics
* Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/io.h>
#include <linux/amba/serial.h>
#include <mach/spear.h>
#ifndef __PLAT_UNCOMPRESS_H
#define __PLAT_UNCOMPRESS_H
/*
* This does not append a newline
*/
static inline void putc(int c)
{
void __iomem *base = (void __iomem *)SPEAR_DBG_UART_BASE;
while (readl_relaxed(base + UART01x_FR) & UART01x_FR_TXFF)
barrier();
writel_relaxed(c, base + UART01x_DR);
}
static inline void flush(void)
{
}
/*
* nothing to do
*/
#define arch_decomp_setup()
#define arch_decomp_wdog()
#endif /* __PLAT_UNCOMPRESS_H */