release/src-rt-6.x.4708/linux/linux-2.6.36/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  */
  24 extern 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  */
  30 extern void platform_setup (char **);
  31
  32 /*
  33  * platform_init_irq is called from init_IRQ.
  34  */
  35 extern void platform_init_irq (void);
  36
  37 /*
  38  * platform_restart is called to restart the system.
  39  */
  40 extern void platform_restart (void);
  41
  42 /*
  43  * platform_halt is called to stop the system and halt.
  44  */
  45 extern void platform_halt (void);
  46
  47 /*
  48  * platform_power_off is called to stop the system and power it off.
  49  */
  50 extern void platform_power_off (void);
  51
  52 /*
  53  * platform_idle is called from the idle function.
  54  */
  55 extern void platform_idle (void);
  56
  57 /*
  58  * platform_heartbeat is called every HZ
  59  */
  60 extern void platform_heartbeat (void);
  61
  62 /*
  63  * platform_pcibios_init is called to allow the platform to setup the pci bus.
  64  */
  65 extern void platform_pcibios_init (void);
  66
  67 /*
  68  * platform_pcibios_fixup allows to modify the PCI configuration.
  69  */
  70 extern int platform_pcibios_fixup (void);
  71
  72 /*
  73  * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
  74  */
  75 extern void platform_calibrate_ccount (void);
  76
  77 #endif  /* _XTENSA_PLATFORM_H */