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   1 /*
   2  *  include/asm-ppc/cputable.h
   3  *
   4  *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License
   8  *  as published by the Free Software Foundation; either version
   9  *  2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef __ASM_PPC_CPUTABLE_H
  13 #define __ASM_PPC_CPUTABLE_H
  14
  15 /* Exposed to userland CPU features */
  16 #define PPC_FEATURE_32                  0x80000000
  17 #define PPC_FEATURE_64                  0x40000000
  18 #define PPC_FEATURE_601_INSTR           0x20000000
  19 #define PPC_FEATURE_HAS_ALTIVEC         0x10000000
  20 #define PPC_FEATURE_HAS_FPU             0x08000000
  21 #define PPC_FEATURE_HAS_MMU             0x04000000
  22 #define PPC_FEATURE_HAS_4xxMAC          0x02000000
  23 #define PPC_FEATURE_UNIFIED_CACHE       0x01000000
  24 #define PPC_FEATURE_HAS_SPE             0x00800000
  25 #define PPC_FEATURE_HAS_EFP_SINGLE      0x00400000
  26 #define PPC_FEATURE_HAS_EFP_DOUBLE      0x00200000
  27 #define PPC_FEATURE_NO_TB               0x00100000
  28
  29 #ifdef __KERNEL__
  30
  31 #ifndef __ASSEMBLY__
  32
  33 /* This structure can grow, it's real size is used by head.S code
  34  * via the mkdefs mecanism.
  35  */
  36 struct cpu_spec;
  37
  38 typedef void (*cpu_setup_t)(unsigned long offset, int cpu_nr, struct cpu_spec* spec);
  39
  40 struct cpu_spec {
  41         /* CPU is matched via (PVR & pvr_mask) == pvr_value */
  42         unsigned int    pvr_mask;
  43         unsigned int    pvr_value;
  44
  45         char            *cpu_name;
  46         unsigned int    cpu_features;           /* Kernel features */
  47         unsigned int    cpu_user_features;      /* Userland features */
  48
  49         /* cache line sizes */
  50         unsigned int    icache_bsize;
  51         unsigned int    dcache_bsize;
  52
  53         /* number of performance monitor counters */
  54         unsigned int    num_pmcs;
  55
  56         /* this is called to initialize various CPU bits like L1 cache,
  57          * BHT, SPD, etc... from head.S before branching to identify_machine
  58          */
  59         cpu_setup_t     cpu_setup;
  60 };
  61
  62 extern struct cpu_spec          cpu_specs[];
  63 extern struct cpu_spec          *cur_cpu_spec[];
  64
  65 static inline unsigned int cpu_has_feature(unsigned int feature)
  66 {
  67         return cur_cpu_spec[0]->cpu_features & feature;
  68 }
  69
  70 #endif /* __ASSEMBLY__ */
  71
  72 /* CPU kernel features */
  73 #define CPU_FTR_SPLIT_ID_CACHE          0x00000001
  74 #define CPU_FTR_L2CR                    0x00000002
  75 #define CPU_FTR_SPEC7450                0x00000004
  76 #define CPU_FTR_ALTIVEC                 0x00000008
  77 #define CPU_FTR_TAU                     0x00000010
  78 #define CPU_FTR_CAN_DOZE                0x00000020
  79 #define CPU_FTR_USE_TB                  0x00000040
  80 #define CPU_FTR_604_PERF_MON            0x00000080
  81 #define CPU_FTR_601                     0x00000100
  82 #define CPU_FTR_HPTE_TABLE              0x00000200
  83 #define CPU_FTR_CAN_NAP                 0x00000400
  84 #define CPU_FTR_L3CR                    0x00000800
  85 #define CPU_FTR_L3_DISABLE_NAP          0x00001000
  86 #define CPU_FTR_NAP_DISABLE_L2_PR       0x00002000
  87 #define CPU_FTR_DUAL_PLL_750FX          0x00004000
  88 #define CPU_FTR_NO_DPM                  0x00008000
  89 #define CPU_FTR_HAS_HIGH_BATS           0x00010000
  90 #define CPU_FTR_NEED_COHERENT           0x00020000
  91 #define CPU_FTR_NO_BTIC                 0x00040000
  92 #define CPU_FTR_BIG_PHYS                0x00080000
  93
  94 #ifdef __ASSEMBLY__
  95
  96 #define BEGIN_FTR_SECTION               98:
  97
  98 #define END_FTR_SECTION(msk, val)               \
  99 99:                                             \
 100         .section __ftr_fixup,"a";               \
 101         .align 2;                               \
 102         .long msk;                              \
 103         .long val;                              \
 104         .long 98b;                              \
 105         .long 99b;                              \
 106         .previous
 107
 108 #else
 109
 110 #define BEGIN_FTR_SECTION               "98:\n"
 111 #define END_FTR_SECTION(msk, val)               \
 112 "99:\n"                                         \
 113 "       .section __ftr_fixup,\"a\";\n"          \
 114 "       .align 2;\n"                            \
 115 "       .long "#msk";\n"                        \
 116 "       .long "#val";\n"                        \
 117 "       .long 98b;\n"                           \
 118 "       .long 99b;\n"                           \
 119 "       .previous\n"
 120
 121
 122 #endif /* __ASSEMBLY__ */
 123
 124 #define END_FTR_SECTION_IFSET(msk)      END_FTR_SECTION((msk), (msk))
 125 #define END_FTR_SECTION_IFCLR(msk)      END_FTR_SECTION((msk), 0)
 126
 127 #endif /* __ASM_PPC_CPUTABLE_H */
 128 #endif /* __KERNEL__ */
 129