include/asm-arm/system.h

   1 #ifndef __ASM_ARM_SYSTEM_H
   2 #define __ASM_ARM_SYSTEM_H
   3
   4 #include <linux/kernel.h>
   5
   6 #ifdef __KERNEL__
   7
   8 #include <linux/config.h>
   9
  10 /* information about the system we're running on */
  11 extern unsigned int system_rev;
  12 extern unsigned int system_serial_low;
  13 extern unsigned int system_serial_high;
  14
  15 /* The type of machine we're running on */
  16 extern unsigned int __machine_arch_type;
  17
  18 /* see arch/arm/kernel/setup.c for a description of these */
  19 #define MACH_TYPE_EBSA110               0
  20 #define MACH_TYPE_RISCPC                1
  21 #define MACH_TYPE_NEXUSPCI              3
  22 #define MACH_TYPE_EBSA285               4
  23 #define MACH_TYPE_NETWINDER             5
  24 #define MACH_TYPE_CATS                  6
  25 #define MACH_TYPE_TBOX                  7
  26 #define MACH_TYPE_CO285                 8
  27 #define MACH_TYPE_CLPS7110              9
  28 #define MACH_TYPE_ARCHIMEDES            10
  29 #define MACH_TYPE_A5K                   11
  30 #define MACH_TYPE_ETOILE                12
  31 #define MACH_TYPE_LACIE_NAS             13
  32 #define MACH_TYPE_CLPS7500              14
  33 #define MACH_TYPE_SHARK                 15
  34 #define MACH_TYPE_SA1100                16
  35 #define MACH_TYPE_PERSONAL_SERVER       17
  36
  37 /*
  38  * Sort out a definition for machine_arch_type
  39  * The rules are:
  40  * 1. If one architecture is selected, then all machine_is_xxx()
  41  *    are constant.
  42  * 2. If two or more architectures are selected, then the selected
  43  *    machine_is_xxx() are variable, and the unselected machine_is_xxx()
  44  *    are constant zero.
  45  *
  46  * In general, you should use machine_is_xxxx() in your code, not:
  47  *  -  switch (machine_arch_type) { }
  48  *  -  if (machine_arch_type = xxxx)
  49  *  -  __machine_arch_type
  50  */
  51 #ifdef CONFIG_ARCH_EBSA110
  52 # ifdef machine_arch_type
  53 #  undef machine_arch_type
  54 #  define machine_arch_type     __machine_arch_type
  55 # else
  56 #  define machine_arch_type     MACH_TYPE_EBSA110
  57 # endif
  58 # define machine_is_ebsa110()   (machine_arch_type == MACH_TYPE_EBSA110)
  59 #else
  60 # define machine_is_ebsa110()   (0)
  61 #endif
  62
  63 #ifdef CONFIG_ARCH_RPC
  64 # ifdef machine_arch_type
  65 #  undef machine_arch_type
  66 #  define machine_arch_type     __machine_arch_type
  67 # else
  68 #  define machine_arch_type     MACH_TYPE_RISCPC
  69 # endif
  70 # define machine_is_riscpc()    (machine_arch_type == MACH_TYPE_RISCPC)
  71 #else
  72 # define machine_is_riscpc()    (0)
  73 #endif
  74
  75 #ifdef CONFIG_ARCH_EBSA285
  76 # ifdef machine_arch_type
  77 #  undef machine_arch_type
  78 #  define machine_arch_type     __machine_arch_type
  79 # else
  80 #  define machine_arch_type     MACH_TYPE_EBSA285
  81 # endif
  82 # define machine_is_ebsa285()   (machine_arch_type == MACH_TYPE_EBSA285)
  83 #else
  84 # define machine_is_ebsa285()   (0)
  85 #endif
  86
  87 #ifdef CONFIG_ARCH_NETWINDER
  88 # ifdef machine_arch_type
  89 #  undef machine_arch_type
  90 #  define machine_arch_type     __machine_arch_type
  91 # else
  92 #  define machine_arch_type     MACH_TYPE_NETWINDER
  93 # endif
  94 # define machine_is_netwinder() (machine_arch_type == MACH_TYPE_NETWINDER)
  95 #else
  96 # define machine_is_netwinder() (0)
  97 #endif
  98
  99 #ifdef CONFIG_CATS
 100 # ifdef machine_arch_type
 101 #  undef machine_arch_type
 102 #  define machine_arch_type     __machine_arch_type
 103 # else
 104 #  define machine_arch_type     MACH_TYPE_CATS
 105 # endif
 106 # define machine_is_cats()      (machine_arch_type == MACH_TYPE_CATS)
 107 #else
 108 # define machine_is_cats()      (0)
 109 #endif
 110
 111 #ifdef CONFIG_ARCH_CO285
 112 # ifdef machine_arch_type
 113 #  undef machine_arch_type
 114 #  define machine_arch_type     __machine_arch_type
 115 # else
 116 #  define machine_arch_type     MACH_TYPE_CO285
 117 # endif
 118 # define machine_is_co285()     (machine_arch_type == MACH_TYPE_CO285)
 119 #else
 120 # define machine_is_co285()     (0)
 121 #endif
 122
 123 #ifdef CONFIG_ARCH_ARC
 124 # ifdef machine_arch_type
 125 #  undef machine_arch_type
 126 #  define machine_arch_type     __machine_arch_type
 127 # else
 128 #  define machine_arch_type     MACH_TYPE_ARCHIMEDES
 129 # endif
 130 # define machine_is_arc()       (machine_arch_type == MACH_TYPE_ARCHIMEDES)
 131 #else
 132 # define machine_is_arc()       (0)
 133 #endif
 134
 135 #ifdef CONFIG_ARCH_A5K
 136 # ifdef machine_arch_type
 137 #  undef machine_arch_type
 138 #  define machine_arch_type     __machine_arch_type
 139 # else
 140 #  define machine_arch_type     MACH_TYPE_A5K
 141 # endif
 142 # define machine_is_a5k()       (machine_arch_type == MACH_TYPE_A5K)
 143 #else
 144 # define machine_is_a5k()       (0)
 145 #endif
 146
 147 #ifdef CONFIG_ARCH_CLPS7500
 148 # ifdef machine_arch_type
 149 #  undef machine_arch_type
 150 #  define machine_arch_type     __machine_arch_type
 151 # else
 152 #  define machine_arch_type     MACH_TYPE_CLPS7500
 153 # endif
 154 # define machine_is_clps7500()  (machine_arch_type == MACH_TYPE_CLPS7500)
 155 #else
 156 # define machine_is_clps7500()  (0)
 157 #endif
 158
 159 #ifdef CONFIG_ARCH_SHARK
 160 # ifdef machine_arch_type
 161 #  undef machine_arch_type
 162 #  define machine_arch_type     __machine_arch_type
 163 # else
 164 #  define machine_arch_type     MACH_TYPE_SHARK
 165 # endif
 166 # define machine_is_shark()     (machine_arch_type == MACH_TYPE_SHARK)
 167 #else
 168 # define machine_is_shark()     (0)
 169 #endif
 170
 171 #ifdef CONFIG_ARCH_SA1100
 172 # ifdef machine_arch_type
 173 #  undef machine_arch_type
 174 #  define machine_arch_type     __machine_arch_type
 175 # else
 176 #  define machine_arch_type     MACH_TYPE_SA1100
 177 # endif
 178 # define machine_is_sa1100()    (machine_arch_type == MACH_TYPE_SA1100)
 179 #else
 180 # define machine_is_sa1100()    (0)
 181 #endif
 182
 183 #ifdef CONFIG_PERSONAL_SERVER
 184 # ifdef machine_arch_type
 185 #  undef machine_arch_type
 186 #  define machine_arch_type     __machine_arch_type
 187 # else
 188 #  define machine_arch_type     MACH_TYPE_PERSONAL_SERVER
 189 # endif
 190 # define machine_is_personal_server()   (machine_arch_type == MACH_TYPE_PERSONAL_SERVER)
 191 #else
 192 # define machine_is_personal_server()   (0)
 193 #endif
 194
 195 #ifndef machine_arch_type
 196 #define machine_arch_type       __machine_arch_type
 197 #endif
 198
 199 #include <asm/proc-fns.h>
 200
 201 #define xchg(ptr,x) \
 202         ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 203
 204 #define tas(ptr) (xchg((ptr),1))
 205
 206 extern void arm_malalignedptr(const char *, void *, volatile void *);
 207 extern asmlinkage void __backtrace(void);
 208
 209 /*
 210  * Include processor dependent parts
 211  */
 212 #include <asm/proc/system.h>
 213
 214 #define mb() __asm__ __volatile__ ("" : : : "memory")
 215 #define rmb() mb()
 216 #define wmb() mb()
 217 #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
 218
 219 #define prepare_to_switch()    do { } while(0)
 220
 221 /*
 222  * switch_to(prev, next) should switch from task `prev' to `next'
 223  * `prev' will never be the same as `next'.
 224  * The `mb' is to tell GCC not to cache `current' across this call.
 225  */
 226 extern struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *next);
 227
 228 #define switch_to(prev,next,last)               \
 229         do {                                    \
 230                 last = __switch_to(prev,next);  \
 231                 mb();                           \
 232         } while (0)
 233
 234 #endif
 235
 236 #endif