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 extern unsigned int mem_fclk_21285;
  15
  16 /* The type of machine we're running on */
  17 extern unsigned int __machine_arch_type;
  18
  19 /* see arch/arm/kernel/arch.c for a description of these */
  20 #define MACH_TYPE_EBSA110               0
  21 #define MACH_TYPE_RISCPC                1
  22 #define MACH_TYPE_NEXUSPCI              3
  23 #define MACH_TYPE_EBSA285               4
  24 #define MACH_TYPE_NETWINDER             5
  25 #define MACH_TYPE_CATS                  6
  26 #define MACH_TYPE_TBOX                  7
  27 #define MACH_TYPE_CO285                 8
  28 #define MACH_TYPE_CLPS7110              9
  29 #define MACH_TYPE_ARCHIMEDES            10
  30 #define MACH_TYPE_A5K                   11
  31 #define MACH_TYPE_ETOILE                12
  32 #define MACH_TYPE_LACIE_NAS             13
  33 #define MACH_TYPE_CLPS7500              14
  34 #define MACH_TYPE_SHARK                 15
  35 #define MACH_TYPE_BRUTUS                16
  36 #define MACH_TYPE_PERSONAL_SERVER       17
  37 #define MACH_TYPE_ITSY                  18
  38 #define MACH_TYPE_L7200                 19
  39 /* 20 is free - contact rmk@arm.linux.org.uk directly if you wish to use this number */
  40 #define MACH_TYPE_INTEGRATOR            21
  41 #define MACH_TYPE_BITSY                 22
  42 #define MACH_TYPE_IXP1200               23
  43 #define MACH_TYPE_THINCLIENT            24
  44 #define MACH_TYPE_ASSABET               25
  45 #define MACH_TYPE_VICTOR                26
  46 #define MACH_TYPE_LART                  27
  47 #define MACH_TYPE_RANGER                28
  48 #define MACH_TYPE_GRAPHICSCLIENT        29
  49 #define MACH_TYPE_XP860                 30
  50
  51 /*
  52  * Sort out a definition for machine_arch_type
  53  * The rules are:
  54  * 1. If one architecture is selected, then all machine_is_xxx()
  55  *    are constant.
  56  * 2. If two or more architectures are selected, then the selected
  57  *    machine_is_xxx() are variable, and the unselected machine_is_xxx()
  58  *    are constant zero.
  59  *
  60  * In general, you should use machine_is_xxxx() in your code, not:
  61  *  -  switch (machine_arch_type) { }
  62  *  -  if (machine_arch_type = xxxx)
  63  *  -  __machine_arch_type
  64  *
  65  * Please note that these are kept in numeric order (ie, the same
  66  * order as the list above).
  67  */
  68 #ifdef CONFIG_ARCH_EBSA110
  69 # ifdef machine_arch_type
  70 #  undef machine_arch_type
  71 #  define machine_arch_type     __machine_arch_type
  72 # else
  73 #  define machine_arch_type     MACH_TYPE_EBSA110
  74 # endif
  75 # define machine_is_ebsa110()   (machine_arch_type == MACH_TYPE_EBSA110)
  76 #else
  77 # define machine_is_ebsa110()   (0)
  78 #endif
  79
  80 #ifdef CONFIG_ARCH_RPC
  81 # ifdef machine_arch_type
  82 #  undef machine_arch_type
  83 #  define machine_arch_type     __machine_arch_type
  84 # else
  85 #  define machine_arch_type     MACH_TYPE_RISCPC
  86 # endif
  87 # define machine_is_riscpc()    (machine_arch_type == MACH_TYPE_RISCPC)
  88 #else
  89 # define machine_is_riscpc()    (0)
  90 #endif
  91
  92 #ifdef CONFIG_ARCH_EBSA285
  93 # ifdef machine_arch_type
  94 #  undef machine_arch_type
  95 #  define machine_arch_type     __machine_arch_type
  96 # else
  97 #  define machine_arch_type     MACH_TYPE_EBSA285
  98 # endif
  99 # define machine_is_ebsa285()   (machine_arch_type == MACH_TYPE_EBSA285)
 100 #else
 101 # define machine_is_ebsa285()   (0)
 102 #endif
 103
 104 #ifdef CONFIG_ARCH_NETWINDER
 105 # ifdef machine_arch_type
 106 #  undef machine_arch_type
 107 #  define machine_arch_type     __machine_arch_type
 108 # else
 109 #  define machine_arch_type     MACH_TYPE_NETWINDER
 110 # endif
 111 # define machine_is_netwinder() (machine_arch_type == MACH_TYPE_NETWINDER)
 112 #else
 113 # define machine_is_netwinder() (0)
 114 #endif
 115
 116 #ifdef CONFIG_ARCH_CATS
 117 # ifdef machine_arch_type
 118 #  undef machine_arch_type
 119 #  define machine_arch_type     __machine_arch_type
 120 # else
 121 #  define machine_arch_type     MACH_TYPE_CATS
 122 # endif
 123 # define machine_is_cats()      (machine_arch_type == MACH_TYPE_CATS)
 124 #else
 125 # define machine_is_cats()      (0)
 126 #endif
 127
 128 #ifdef CONFIG_ARCH_CO285
 129 # ifdef machine_arch_type
 130 #  undef machine_arch_type
 131 #  define machine_arch_type     __machine_arch_type
 132 # else
 133 #  define machine_arch_type     MACH_TYPE_CO285
 134 # endif
 135 # define machine_is_co285()     (machine_arch_type == MACH_TYPE_CO285)
 136 #else
 137 # define machine_is_co285()     (0)
 138 #endif
 139
 140 #ifdef CONFIG_ARCH_ARC
 141 # ifdef machine_arch_type
 142 #  undef machine_arch_type
 143 #  define machine_arch_type     __machine_arch_type
 144 # else
 145 #  define machine_arch_type     MACH_TYPE_ARCHIMEDES
 146 # endif
 147 # define machine_is_arc()       (machine_arch_type == MACH_TYPE_ARCHIMEDES)
 148 #else
 149 # define machine_is_arc()       (0)
 150 #endif
 151
 152 #ifdef CONFIG_ARCH_A5K
 153 # ifdef machine_arch_type
 154 #  undef machine_arch_type
 155 #  define machine_arch_type     __machine_arch_type
 156 # else
 157 #  define machine_arch_type     MACH_TYPE_A5K
 158 # endif
 159 # define machine_is_a5k()       (machine_arch_type == MACH_TYPE_A5K)
 160 #else
 161 # define machine_is_a5k()       (0)
 162 #endif
 163
 164 #ifdef CONFIG_ARCH_CLPS7500
 165 # ifdef machine_arch_type
 166 #  undef machine_arch_type
 167 #  define machine_arch_type     __machine_arch_type
 168 # else
 169 #  define machine_arch_type     MACH_TYPE_CLPS7500
 170 # endif
 171 # define machine_is_clps7500()  (machine_arch_type == MACH_TYPE_CLPS7500)
 172 #else
 173 # define machine_is_clps7500()  (0)
 174 #endif
 175
 176 #ifdef CONFIG_ARCH_SHARK
 177 # ifdef machine_arch_type
 178 #  undef machine_arch_type
 179 #  define machine_arch_type     __machine_arch_type
 180 # else
 181 #  define machine_arch_type     MACH_TYPE_SHARK
 182 # endif
 183 # define machine_is_shark()     (machine_arch_type == MACH_TYPE_SHARK)
 184 #else
 185 # define machine_is_shark()     (0)
 186 #endif
 187
 188 #ifdef CONFIG_SA1100_BRUTUS
 189 # ifdef machine_arch_type
 190 #  undef machine_arch_type
 191 #  define machine_arch_type     __machine_arch_type
 192 # else
 193 #  define machine_arch_type     MACH_TYPE_BRUTUS
 194 # endif
 195 # define machine_is_brutus()    (machine_arch_type == MACH_TYPE_BRUTUS)
 196 #else
 197 # define machine_is_brutus()    (0)
 198 #endif
 199
 200 #ifdef CONFIG_ARCH_PERSONAL_SERVER
 201 # ifdef machine_arch_type
 202 #  undef machine_arch_type
 203 #  define machine_arch_type     __machine_arch_type
 204 # else
 205 #  define machine_arch_type     MACH_TYPE_PERSONAL_SERVER
 206 # endif
 207 # define machine_is_personal_server()   (machine_arch_type == MACH_TYPE_PERSONAL_SERVER)
 208 #else
 209 # define machine_is_personal_server()   (0)
 210 #endif
 211
 212 #ifdef CONFIG_SA1100_ITSY
 213 # ifdef machine_arch_type
 214 #  undef machine_arch_type
 215 #  define machine_arch_type     __machine_arch_type
 216 # else
 217 #  define machine_arch_type     MACH_TYPE_ITSY
 218 # endif
 219 # define machine_is_itsy()      (machine_arch_type == MACH_TYPE_ITSY)
 220 #else
 221 # define machine_is_itsy()      (0)
 222 #endif
 223
 224 #ifdef CONFIG_ARCH_L7200
 225 # ifdef machine_arch_type
 226 #  undef machine_arch_type
 227 #  define machine_arch_type     __machine_arch_type
 228 # else
 229 #  define machine_arch_type     MACH_TYPE_L7200
 230 # endif
 231 # define machine_is_l7200()     (machine_arch_type == MACH_TYPE_L7200)
 232 #else
 233 # define machine_is_l7200()     (0)
 234 #endif
 235
 236 #ifdef CONFIG_SA1100_BITSY
 237 # ifdef machine_arch_type
 238 #  undef machine_arch_type
 239 #  define machine_arch_type     __machine_arch_type
 240 # else
 241 #  define machine_arch_type     MACH_TYPE_BITSY
 242 # endif
 243 # define machine_is_bitsy()     (machine_arch_type == MACH_TYPE_BITSY)
 244 #else
 245 # define machine_is_bitsy()     (0)
 246 #endif
 247
 248 #ifdef CONFIG_SA1100_THINCLIENT
 249 # ifdef machine_arch_type
 250 #  undef machine_arch_type
 251 #  define machine_arch_type     __machine_arch_type
 252 # else
 253 #  define machine_arch_type     MACH_TYPE_THINCLIENT
 254 # endif
 255 # define machine_is_thinclient()        (machine_arch_type == MACH_TYPE_THINCLIENT)
 256 #else
 257 # define machine_is_thinclient()        (0)
 258 #endif
 259
 260 #ifdef CONFIG_SA1100_ASSABET
 261 # ifdef machine_arch_type
 262 #  undef machine_arch_type
 263 #  define machine_arch_type     __machine_arch_type
 264 # else
 265 #  define machine_arch_type     MACH_TYPE_ASSABET
 266 # endif
 267 # define machine_is_assabet()   (machine_arch_type == MACH_TYPE_ASSABET)
 268 #else
 269 # define machine_is_assabet()   (0)
 270 #endif
 271
 272 #ifdef CONFIG_SA1100_VICTOR
 273 # ifdef machine_arch_type
 274 #  undef machine_arch_type
 275 #  define machine_arch_type     __machine_arch_type
 276 # else
 277 #  define machine_arch_type     MACH_TYPE_VICTOR
 278 # endif
 279 # define machine_is_victor()    (machine_arch_type == MACH_TYPE_VICTOR)
 280 #else
 281 # define machine_is_victor()    (0)
 282 #endif
 283
 284 #ifdef CONFIG_SA1100_LART
 285 # ifdef machine_arch_type
 286 #  undef machine_arch_type
 287 #  define machine_arch_type     __machine_arch_type
 288 # else
 289 #  define machine_arch_type     MACH_TYPE_LART
 290 # endif
 291 # define machine_is_lart()      (machine_arch_type == MACH_TYPE_LART)
 292 #else
 293 # define machine_is_lart()      (0)
 294 #endif
 295
 296 #ifdef CONFIG_SA1100_GRAPHICSCLIENT
 297 # ifdef machine_arch_type
 298 #  undef machine_arch_type
 299 #  define machine_arch_type     __machine_arch_type
 300 # else
 301 #  define machine_arch_type     MACH_TYPE_GRAPHICSCLIENT
 302 # endif
 303 # define machine_is_grpahicsclient() \
 304                                 (machine_arch_type == MACH_TYPE_GRAPHICSCLIENT)
 305 #else
 306 # define machine_is_graphicsclient() \
 307                                 (0)
 308 #endif
 309
 310 #ifdef CONFIG_SA1100_XP860
 311 # ifdef machine_arch_type
 312 #  undef machine_arch_type
 313 #  define machine_arch_type     __machine_arch_type
 314 # else
 315 #  define machine_arch_type     MACH_TYPE_XP860
 316 # endif
 317 # define machine_is_xp860()     (machine_arch_type == MACH_TYPE_XP860)
 318 #else
 319 # define machine_is_xp860()     (0)
 320 #endif
 321
 322 /*
 323  * The following are currently unregistered
 324  */
 325 #ifdef CONFIG_SA1100_EMPEG
 326 # ifdef machine_arch_type
 327 #  undef machine_arch_type
 328 #  define machine_arch_type     __machine_arch_type
 329 # else
 330 #  define machine_arch_type     MACH_TYPE_EMPEG
 331 # endif
 332 # define machine_is_empeg()     (machine_arch_type == MACH_TYPE_EMPEG)
 333 #else
 334 # define machine_is_empeg()     (0)
 335 #endif
 336
 337 #ifdef CONFIG_SA1100_TIFON
 338 # ifdef machine_arch_type
 339 #  undef machine_arch_type
 340 #  define machine_arch_type     __machine_arch_type
 341 # else
 342 #  define machine_arch_type     MACH_TYPE_TIFON
 343 # endif
 344 # define machine_is_tifon()     (machine_arch_type == MACH_TYPE_TIFON)
 345 #else
 346 # define machine_is_tifon()     (0)
 347 #endif
 348
 349 #ifdef CONFIG_SA1100_PLEB
 350 # ifdef machine_arch_type
 351 #  undef machine_arch_type
 352 #  define machine_arch_type     __machine_arch_type
 353 # else
 354 #  define machine_arch_type     MACH_TYPE_PLEB
 355 # endif
 356 # define machine_is_pleb()      (machine_arch_type == MACH_TYPE_PLEB)
 357 #else
 358 # define machine_is_pleb()      (0)
 359 #endif
 360
 361 #ifdef CONFIG_SA1100_PENNY
 362 # ifdef machine_arch_type
 363 #  undef machine_arch_type
 364 #  define machine_arch_type     __machine_arch_type
 365 # else
 366 #  define machine_arch_type     MACH_TYPE_PENNY
 367 # endif
 368 # define machine_is_penny()     (machine_arch_type == MACH_TYPE_PENNY)
 369 #else
 370 # define machine_is_penny()     (0)
 371 #endif
 372
 373 #ifndef machine_arch_type
 374 #define machine_arch_type       __machine_arch_type
 375 #endif
 376
 377 #include <asm/proc-fns.h>
 378
 379 #define xchg(ptr,x) \
 380         ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 381
 382 #define tas(ptr) (xchg((ptr),1))
 383
 384 extern asmlinkage void __backtrace(void);
 385
 386 /*
 387  * Include processor dependent parts
 388  */
 389 #include <asm/proc/system.h>
 390
 391 #define mb() __asm__ __volatile__ ("" : : : "memory")
 392 #define rmb() mb()
 393 #define wmb() mb()
 394 #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
 395
 396 #define prepare_to_switch()    do { } while(0)
 397
 398 /*
 399  * switch_to(prev, next) should switch from task `prev' to `next'
 400  * `prev' will never be the same as `next'.
 401  * The `mb' is to tell GCC not to cache `current' across this call.
 402  */
 403 extern struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *next);
 404
 405 #define switch_to(prev,next,last)               \
 406         do {                                    \
 407                 last = __switch_to(prev,next);  \
 408                 mb();                           \
 409         } while (0)
 410
 411 #endif
 412
 413 /* For spinlocks etc */
 414 #define local_irq_save(x)       __save_flags_cli(x)
 415 #define local_irq_restore(x)    __restore_flags(x)
 416 #define local_irq_disable()     __cli()
 417 #define local_irq_enable()      __sti()
 418
 419 #ifdef CONFIG_SMP
 420 #error SMP not supported
 421 #else
 422
 423 #define cli()                   __cli()
 424 #define sti()                   __sti()
 425 #define save_flags(x)           __save_flags(x)
 426 #define restore_flags(x)        __restore_flags(x)
 427 #define save_flags_cli(x)       __save_flags_cli(x)
 428
 429 #endif
 430
 431 #endif