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 #include <asm/arch/io.h>
  19
  20
  21 #define ARCH_ID_AT91RM9200      0x09290780
  22 #define ARCH_ID_AT91SAM9260     0x019803a0
  23 #define ARCH_ID_AT91SAM9261     0x019703a0
  24 #define ARCH_ID_AT91SAM9263     0x019607a0
  25 #define ARCH_ID_AT91SAM9RL64    0x019b03a0
  26 #define ARCH_ID_AT91CAP9        0x039A03A0
  27
  28 #define ARCH_ID_AT91SAM9XE128   0x329973a0
  29 #define ARCH_ID_AT91SAM9XE256   0x329a93a0
  30 #define ARCH_ID_AT91SAM9XE512   0x329aa3a0
  31
  32 #define ARCH_ID_AT91M40800      0x14080044
  33 #define ARCH_ID_AT91R40807      0x44080746
  34 #define ARCH_ID_AT91M40807      0x14080745
  35 #define ARCH_ID_AT91R40008      0x44000840
  36
  37 static inline unsigned long at91_cpu_identify(void)
  38 {
  39         return (at91_sys_read(AT91_DBGU_CIDR) & ~AT91_CIDR_VERSION);
  40 }
  41
  42
  43 #define ARCH_FAMILY_AT91X92     0x09200000
  44 #define ARCH_FAMILY_AT91SAM9    0x01900000
  45 #define ARCH_FAMILY_AT91SAM9XE  0x02900000
  46
  47 static inline unsigned long at91_arch_identify(void)
  48 {
  49         return (at91_sys_read(AT91_DBGU_CIDR) & AT91_CIDR_ARCH);
  50 }
  51
  52
  53 #ifdef CONFIG_AT91RM9200
  54 /* no actual detection for this architecture */
  55 #define cpu_is_at91rm9200()     (1)
  56 #else
  57 #define cpu_is_at91rm9200()     (0)
  58 #endif
  59
  60 #ifdef CONFIG_AT91SAM9261
  61 #define cpu_is_at91sam9xe()     (at91_arch_identify() == ARCH_FAMILY_AT91SAM9XE)
  62 #define cpu_is_at91sam9260()    ((at91_cpu_identify() == ARCH_ID_AT91SAM9260) \
  63                                         || cpu_is_at91sam9xe())
  64 #else
  65 #define cpu_is_at91sam9xe()     (0)
  66 #define cpu_is_at91sam9260()    (0)
  67 #endif
  68
  69 #ifdef CONFIG_AT91SAM9261
  70 #define cpu_is_at91sam9261()    (at91_cpu_identify() == ARCH_ID_AT91SAM9261)
  71 #else
  72 #define cpu_is_at91sam9261()    (0)
  73 #endif
  74
  75 #ifdef CONFIG_AT91SAM9261
  76 #define cpu_is_at91sam9263()    (at91_cpu_identify() == ARCH_ID_AT91SAM9263)
  77 #else
  78 #define cpu_is_at91sam9263()    (0)
  79 #endif
  80
  81 #ifdef CONFIG_AT91SAM9RL
  82 #define cpu_is_at91sam9rl()     (at91_cpu_identify() == ARCH_ID_AT91SAM9RL64)
  83 #else
  84 #define cpu_is_at91sam9rl()     (0)
  85 #endif
  86
  87 #ifdef CONFIG_AT91CAP9
  88 #define cpu_is_at91cap9()       (at91_cpu_identify() == ARCH_ID_AT91CAP9)
  89 #else
  90 #define cpu_is_at91cap9()       (0)
  91 #endif
  92
  93 /*
  94  * Since this is ARM, we will never run on any AVR32 CPU. But these
  95  * definitions may reduce clutter in common drivers.
  96  */
  97 #define cpu_is_at32ap7000()     (0)
  98
  99 #endif