linux/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h
<<
>>
Prefs
   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 2005 Ilya A. Volynets-Evenbakh
   7 * Copyright (C) 2005, 07 Ralf Baechle (ralf@linux-mips.org)
   8 */
   9#ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
  10#define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
  11
  12
  13/*
  14 * R5000 has an interesting "restriction":  ll(d)/sc(d)
  15 * instructions to XKPHYS region simply do uncached bus
  16 * requests. This breaks all the atomic bitops functions.
  17 * so, for 64bit IP32 kernel we just don't use ll/sc.
  18 * This does not affect luserland.
  19 */
  20#if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT)
  21#define cpu_has_llsc            0
  22#else
  23#define cpu_has_llsc            1
  24#endif
  25
  26/* Settings which are common for all ip32 CPUs */
  27#define cpu_has_tlb             1
  28#define cpu_has_4kex            1
  29#define cpu_has_32fpr           1
  30#define cpu_has_counter         1
  31#define cpu_has_mips16          0
  32#define cpu_has_mips16e2        0
  33#define cpu_has_vce             0
  34#define cpu_has_cache_cdex_s    0
  35#define cpu_has_mcheck          0
  36#define cpu_has_ejtag           0
  37#define cpu_has_vtag_icache     0
  38#define cpu_has_ic_fills_f_dc   0
  39#define cpu_has_dsp             0
  40#define cpu_has_dsp2            0
  41#define cpu_has_4k_cache        1
  42#define cpu_has_mipsmt          0
  43#define cpu_has_userlocal       0
  44
  45
  46#define cpu_has_mips32r1        0
  47#define cpu_has_mips32r2        0
  48#define cpu_has_mips64r1        0
  49#define cpu_has_mips64r2        0
  50
  51#endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */
  52