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kernel/linux-rt-4.4.41/arch/arm/mach-spear/include/mach/uncompress.h 897 Bytes
5113f6f70   김현기   kernel add
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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 <vireshk@kernel.org>
   *
   * 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()
  
  #endif /* __PLAT_UNCOMPRESS_H */