include/asm-arm/arch-ixp4xx/cpu.h

   1 /*
   2  * include/asm-arm/arch-ixp4xx/cpu.h
   3  *
   4  * IXP4XX cpu type detection
   5  *
   6  * Copyright (C) 2007 MontaVista Software, Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #ifndef __ASM_ARCH_CPU_H__
  15 #define __ASM_ARCH_CPU_H__
  16
  17 extern unsigned int processor_id;
  18 /* Processor id value in CP15 Register 0 */
  19 #define IXP425_PROCESSOR_ID_VALUE       0x690541c0
  20 #define IXP435_PROCESSOR_ID_VALUE       0x69054040
  21 #define IXP465_PROCESSOR_ID_VALUE       0x69054200
  22 #define IXP4XX_PROCESSOR_ID_MASK        0xfffffff0
  23
  24 #define cpu_is_ixp42x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
  25                           IXP425_PROCESSOR_ID_VALUE)
  26 #define cpu_is_ixp43x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
  27                           IXP435_PROCESSOR_ID_VALUE)
  28 #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
  29                           IXP465_PROCESSOR_ID_VALUE)
  30
  31 #endif  /* _ASM_ARCH_CPU_H */