arch/i386/kernel/cpu/rise.c

   1 #include <linux/kernel.h>
   2 #include <linux/init.h>
   3 #include <linux/bitops.h>
   4 #include <asm/processor.h>
   5
   6 #include "cpu.h"
   7
   8 static void __cpuinit init_rise(struct cpuinfo_x86 *c)
   9 {
  10         printk("CPU: Rise iDragon");
  11         if (c->x86_model > 2)
  12                 printk(" II");
  13         printk("\n");
  14
  15         /* Unhide possibly hidden capability flags
  16            The mp6 iDragon family don't have MSRs.
  17            We switch on extra features with this cpuid weirdness: */
  18         __asm__ (
  19                 "movl $0x6363452a, %%eax\n\t"
  20                 "movl $0x3231206c, %%ecx\n\t"
  21                 "movl $0x2a32313a, %%edx\n\t"
  22                 "cpuid\n\t"
  23                 "movl $0x63634523, %%eax\n\t"
  24                 "movl $0x32315f6c, %%ecx\n\t"
  25                 "movl $0x2333313a, %%edx\n\t"
  26                 "cpuid\n\t" : : : "eax", "ebx", "ecx", "edx"
  27         );
  28         set_bit(X86_FEATURE_CX8, c->x86_capability);
  29 }
  30
  31 static struct cpu_dev rise_cpu_dev __cpuinitdata = {
  32         .c_vendor       = "Rise",
  33         .c_ident        = { "RiseRiseRise" },
  34         .c_models = {
  35                 { .vendor = X86_VENDOR_RISE, .family = 5, .model_names =
  36                   {
  37                           [0] = "iDragon",
  38                           [2] = "iDragon",
  39                           [8] = "iDragon II",
  40                           [9] = "iDragon II"
  41                   }
  42                 },
  43         },
  44         .c_init         = init_rise,
  45 };
  46
  47 int __init rise_init_cpu(void)
  48 {
  49         cpu_devs[X86_VENDOR_RISE] = &rise_cpu_dev;
  50         return 0;
  51 }
  52