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kernel/linux-rt-4.4.41/arch/arm/mach-realview/include/mach/uncompress.h 2.1 KB
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  /*
   *  arch/arm/mach-realview/include/mach/uncompress.h
   *
   *  Copyright (C) 2003 ARM Limited
   *
   * 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
   */
  #include <mach/hardware.h>
  #include <asm/mach-types.h>
  
  #include <mach/board-eb.h>
  #include <mach/board-pb11mp.h>
  #include <mach/board-pb1176.h>
  #include <mach/board-pba8.h>
  #include <mach/board-pbx.h>
  
  #define AMBA_UART_DR(base)	(*(volatile unsigned char *)((base) + 0x00))
  #define AMBA_UART_LCRH(base)	(*(volatile unsigned char *)((base) + 0x2c))
  #define AMBA_UART_CR(base)	(*(volatile unsigned char *)((base) + 0x30))
  #define AMBA_UART_FR(base)	(*(volatile unsigned char *)((base) + 0x18))
  
  /*
   * Return the UART base address
   */
  static inline unsigned long get_uart_base(void)
  {
  	if (machine_is_realview_eb())
  		return REALVIEW_EB_UART0_BASE;
  	else if (machine_is_realview_pb11mp())
  		return REALVIEW_PB11MP_UART0_BASE;
  	else if (machine_is_realview_pb1176())
  		return REALVIEW_PB1176_UART0_BASE;
  	else if (machine_is_realview_pba8())
  		return REALVIEW_PBA8_UART0_BASE;
  	else if (machine_is_realview_pbx())
  		return REALVIEW_PBX_UART0_BASE;
  	else
  		return 0;
  }
  
  /*
   * This does not append a newline
   */
  static inline void putc(int c)
  {
  	unsigned long base = get_uart_base();
  
  	while (AMBA_UART_FR(base) & (1 << 5))
  		barrier();
  
  	AMBA_UART_DR(base) = c;
  }
  
  static inline void flush(void)
  {
  	unsigned long base = get_uart_base();
  
  	while (AMBA_UART_FR(base) & (1 << 3))
  		barrier();
  }
  
  /*
   * nothing to do
   */
  #define arch_decomp_setup()