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kernel/linux-rt-4.4.41/arch/xtensa/include/asm/platform.h 1.61 KB
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  /*
   * Platform specific functions
   *
   * This file is subject to the terms and conditions of the GNU General
   * Public License.  See the file "COPYING" in the main directory of
   * this archive for more details.
   *
   * Copyright (C) 2001 - 2005 Tensilica Inc.
   */
  
  #ifndef _XTENSA_PLATFORM_H
  #define _XTENSA_PLATFORM_H
  
  #include <linux/types.h>
  #include <linux/pci.h>
  
  #include <asm/bootparam.h>
  
  /*
   * platform_init is called before the mmu is initialized to give the
   * platform a early hook-up. bp_tag_t is a list of configuration tags
   * passed from the boot-loader.
   */
  extern void platform_init(bp_tag_t*);
  
  /*
   * platform_setup is called from setup_arch with a pointer to the command-line
   * string.
   */
  extern void platform_setup (char **);
  
  /*
   * platform_restart is called to restart the system.
   */
  extern void platform_restart (void);
  
  /*
   * platform_halt is called to stop the system and halt.
   */
  extern void platform_halt (void);
  
  /*
   * platform_power_off is called to stop the system and power it off.
   */
  extern void platform_power_off (void);
  
  /*
   * platform_idle is called from the idle function.
   */
  extern void platform_idle (void);
  
  /*
   * platform_heartbeat is called every HZ
   */
  extern void platform_heartbeat (void);
  
  /*
   * platform_pcibios_init is called to allow the platform to setup the pci bus.
   */
  extern void platform_pcibios_init (void);
  
  /*
   * platform_pcibios_fixup allows to modify the PCI configuration.
   */
  extern int platform_pcibios_fixup (void);
  
  /*
   * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
   */
  extern void platform_calibrate_ccount (void);
  
  #endif	/* _XTENSA_PLATFORM_H */