LXR linux/arch/arm/mach-spear/include/mach/uncompress.h

   1/*
   2 * arch/arm/plat-spear/include/plat/uncompress.h
   3 *
   4 * Serial port stubs for kernel decompress status messages
   5 *
   6 * Copyright (C) 2009 ST Microelectronics
   7 * Viresh Kumar <vireshk@kernel.org>
   8 *
   9 * This file is licensed under the terms of the GNU General Public
  10 * License version 2. This program is licensed "as is" without any
  11 * warranty of any kind, whether express or implied.
  12 */
  13
  14#include <linux/io.h>
  15#include <linux/amba/serial.h>
  16#include <mach/spear.h>
  17
  18#ifndef __PLAT_UNCOMPRESS_H
  19#define __PLAT_UNCOMPRESS_H
  20/*
  21 * This does not append a newline
  22 */
  23static inline void putc(int c)
  24{
  25        void __iomem *base = (void __iomem *)SPEAR_DBG_UART_BASE;
  26
  27        while (readl_relaxed(base + UART01x_FR) & UART01x_FR_TXFF)
  28                barrier();
  29
  30        writel_relaxed(c, base + UART01x_DR);
  31}
  32
  33static inline void flush(void)
  34{
  35}
  36
  37/*
  38 * nothing to do
  39 */
  40#define arch_decomp_setup()
  41
  42#endif /* __PLAT_UNCOMPRESS_H */
  43