release/src-rt-6.x/linux/linux-2.6/include/asm-arm/arch-at91/cpu.h

   1 /*
   2  * include/asm-arm/arch-at91/cpu.h
   3  *
   4  *  Copyright (C) 2006 SAN People
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  */
  12
  13 #ifndef __ASM_ARCH_CPU_H
  14 #define __ASM_ARCH_CPU_H
  15
  16 #include <asm/hardware.h>
  17 #include <asm/arch/at91_dbgu.h>
  18
  19
  20 #define ARCH_ID_AT91RM9200      0x09290780
  21 #define ARCH_ID_AT91SAM9260     0x019803a0
  22 #define ARCH_ID_AT91SAM9261     0x019703a0
  23 #define ARCH_ID_AT91SAM9263     0x019607a0
  24
  25 #define ARCH_ID_AT91SAM9XE128   0x329973a0
  26 #define ARCH_ID_AT91SAM9XE256   0x329a93a0
  27 #define ARCH_ID_AT91SAM9XE512   0x329aa3a0
  28
  29 #define ARCH_ID_AT91SAM9RL64    0x019b03a0
  30
  31 static inline unsigned long at91_cpu_identify(void)
  32 {
  33         return (at91_sys_read(AT91_DBGU_CIDR) & ~AT91_CIDR_VERSION);
  34 }
  35
  36
  37 #define ARCH_FAMILY_AT91X92     0x09200000
  38 #define ARCH_FAMILY_AT91SAM9    0x01900000
  39 #define ARCH_FAMILY_AT91SAM9XE  0x02900000
  40
  41 static inline unsigned long at91_arch_identify(void)
  42 {
  43         return (at91_sys_read(AT91_DBGU_CIDR) & AT91_CIDR_ARCH);
  44 }
  45
  46
  47 #ifdef CONFIG_ARCH_AT91RM9200
  48 #define cpu_is_at91rm9200()     (at91_cpu_identify() == ARCH_ID_AT91RM9200)
  49 #else
  50 #define cpu_is_at91rm9200()     (0)
  51 #endif
  52
  53 #ifdef CONFIG_ARCH_AT91SAM9260
  54 #define cpu_is_at91sam9xe()     (at91_arch_identify() == ARCH_FAMILY_AT91SAM9XE)
  55 #define cpu_is_at91sam9260()    ((at91_cpu_identify() == ARCH_ID_AT91SAM9260) || cpu_is_at91sam9xe())
  56 #else
  57 #define cpu_is_at91sam9xe()     (0)
  58 #define cpu_is_at91sam9260()    (0)
  59 #endif
  60
  61 #ifdef CONFIG_ARCH_AT91SAM9261
  62 #define cpu_is_at91sam9261()    (at91_cpu_identify() == ARCH_ID_AT91SAM9261)
  63 #else
  64 #define cpu_is_at91sam9261()    (0)
  65 #endif
  66
  67 #ifdef CONFIG_ARCH_AT91SAM9263
  68 #define cpu_is_at91sam9263()    (at91_cpu_identify() == ARCH_ID_AT91SAM9263)
  69 #else
  70 #define cpu_is_at91sam9263()    (0)
  71 #endif
  72
  73 #ifdef CONFIG_ARCH_AT91SAM9RL
  74 #define cpu_is_at91sam9rl()     (at91_cpu_identify() == ARCH_ID_AT91SAM9RL64)
  75 #else
  76 #define cpu_is_at91sam9rl()     (0)
  77 #endif
  78
  79
  80 /*
  81  * Since this is ARM, we will never run on any AVR32 CPU. But these
  82  * definitions may reduce clutter in common drivers.
  83  */
  84 #define cpu_is_at32ap7000()     (0)
  85
  86 #endif