arch/unicore32/include/asm/cputype.h

   1 /*
   2  * linux/arch/unicore32/include/asm/cputype.h
   3  *
   4  * Code specific to PKUnity SoC and UniCore ISA
   5  *
   6  * Copyright (C) 2001-2010 GUAN Xue-tao
   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 #ifndef __UNICORE_CPUTYPE_H__
  13 #define __UNICORE_CPUTYPE_H__
  14
  15 #include <linux/stringify.h>
  16
  17 #define CPUID_CPUID     0
  18 #define CPUID_CACHETYPE 1
  19
  20 #define read_cpuid(reg)                                                 \
  21         ({                                                              \
  22                 unsigned int __val;                                     \
  23                 asm("movc       %0, p0.c0, #" __stringify(reg)          \
  24                     : "=r" (__val)                                      \
  25                     :                                                   \
  26                     : "cc");                                            \
  27                 __val;                                                  \
  28         })
  29
  30 #define uc32_cpuid              read_cpuid(CPUID_CPUID)
  31 #define uc32_cachetype          read_cpuid(CPUID_CACHETYPE)
  32
  33 #endif