LXR linux/arch/xtensa/include/asm/platform.h

   1/*
   2 * Platform specific functions
   3 *
   4 * This file is subject to the terms and conditions of the GNU General
   5 * Public License.  See the file "COPYING" in the main directory of
   6 * this archive for more details.
   7 *
   8 * Copyright (C) 2001 - 2005 Tensilica Inc.
   9 */
  10
  11#ifndef _XTENSA_PLATFORM_H
  12#define _XTENSA_PLATFORM_H
  13
  14#include <linux/types.h>
  15#include <linux/pci.h>
  16
  17#include <asm/bootparam.h>
  18
  19/*
  20 * platform_init is called before the mmu is initialized to give the
  21 * platform a early hook-up. bp_tag_t is a list of configuration tags
  22 * passed from the boot-loader.
  23 */
  24extern void platform_init(bp_tag_t*);
  25
  26/*
  27 * platform_setup is called from setup_arch with a pointer to the command-line
  28 * string.
  29 */
  30extern void platform_setup (char **);
  31
  32/*
  33 * platform_restart is called to restart the system.
  34 */
  35extern void platform_restart (void);
  36
  37/*
  38 * platform_halt is called to stop the system and halt.
  39 */
  40extern void platform_halt (void);
  41
  42/*
  43 * platform_power_off is called to stop the system and power it off.
  44 */
  45extern void platform_power_off (void);
  46
  47/*
  48 * platform_idle is called from the idle function.
  49 */
  50extern void platform_idle (void);
  51
  52/*
  53 * platform_heartbeat is called every HZ
  54 */
  55extern void platform_heartbeat (void);
  56
  57/*
  58 * platform_pcibios_init is called to allow the platform to setup the pci bus.
  59 */
  60extern void platform_pcibios_init (void);
  61
  62/*
  63 * platform_pcibios_fixup allows to modify the PCI configuration.
  64 */
  65extern int platform_pcibios_fixup (void);
  66
  67/*
  68 * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
  69 */
  70extern void platform_calibrate_ccount (void);
  71
  72/*
  73 * Flush and reset the mmu, simulate a processor reset, and
  74 * jump to the reset vector.
  75 */
  76void cpu_reset(void) __attribute__((noreturn));
  77
  78#endif  /* _XTENSA_PLATFORM_H */
  79