org.handhelds.familiar/packages/linux/linux-wrt-2.4.30/029-arch_mips_mm_c-r4k_c

   1 --- linux-mips-cvs/arch/mips/mm/c-r4k.c 2004-11-03 17:43:07.000000000 +0100
   2 +++ linux-cache/arch/mips/mm/c-r4k.c    2005-03-06 23:39:53.000000000 +0100
   3 @@ -1031,9 +1031,34 @@
   4         c->options |= MIPS_CPU_SUBSET_CACHES;
   5  }
   6
   7 +#if defined(CONFIG_BCM4310)
   8 +static void __init _change_cachability(u32 cm)
   9 +{
  10 +       struct cpuinfo_mips *c = &current_cpu_data;
  11 +
  12 +       change_c0_config(CONF_CM_CMASK, cm);
  13 +       if ((c->processor_id & (PRID_COMP_MASK | PRID_IMP_MASK)) ==
  14 +                       (PRID_COMP_BROADCOM | PRID_IMP_BCM3302)) {
  15 +                               cm = read_c0_diag();
  16 +                               /* Enable icache */
  17 +                cm |= (1 << 31);
  18 +                /* Enable dcache */
  19 +                cm |= (1 << 30);
  20 +                write_c0_diag(cm);
  21 +       }
  22 +}
  23 +
  24 +static void (*change_cachability)(u32);
  25 +#endif
  26 +
  27  static inline void coherency_setup(void)
  28  {
  29 +#if defined(CONFIG_BCM4310)
  30 +       change_cachability = (void (*)(u32)) KSEG1ADDR((unsigned long)(_change_cachability));
  31 +       change_cachability(CONF_CM_DEFAULT);
  32 +#else
  33         change_c0_config(CONF_CM_CMASK, CONF_CM_DEFAULT);
  34 +#endif
  35
  36         /*
  37          * c0_status.cu=0 specifies that updates by the sc instruction use