kernel/cpuinfo.c

   1 /*
   2         cpuinfo.c
   3         Input/Output
   4         (C) 2014-2015 VOSystems.
   5 */
   6
   7 #include<Diverge/diverge.h>
   8 #include<Diverge/env_var.h>
   9 #include<Diverge/kstdio.h>
  10
  11 env_pc_info pc_env;
  12
  13 void init_CPUinfo(void)
  14 {
  15         char vendor[80];
  16
  17         printTASK("Get CPU Information");
  18         CPUVendor();
  19         printOK("Get CPU Information");
  20         switch(pc_env.vendor){
  21                 case 0:
  22                         printINFO("CPU Vendor = Intel");
  23                         break;
  24                 case 1:
  25                         printINFO("CPU Vendor = AMD");
  26                         break;
  27                 case 2:
  28                         printINFO("CPU Vendor = Centaur Technology");
  29                         break;
  30                 case 3:
  31                         printINFO("CPU Vendor = Cyrix");
  32                         break;
  33                 case 4:
  34                         printINFO("CPU Vendor = Transmeta");
  35                         break;
  36                 case 5:
  37                         printINFO("CPU Vendor = NSC");
  38                         break;
  39                 case 6:
  40                         printINFO("CPU Vendor = NexGen");
  41                         break;
  42                 case 7:
  43                         printINFO("CPU Vendor = Rise Technology");
  44                         break;
  45                 case 8:
  46                         printINFO("CPU Vendor = SiS");
  47                         break;
  48                 case 9:
  49                         printINFO("CPU Vendor = UMC");
  50                         break;
  51                 case 10:
  52                         printINFO("CPU Vendor = VIA Technology");
  53                         break;
  54                 default:
  55                         printFAIL("Can't get CPU Vendor");
  56                         break;
  57         }
  58         return;
  59 }
  60
  61 inline void RunCPUID(struct general_registers *reg, unsigned int eax)
  62 {
  63         __asm__ __volatile__(
  64                 "mov eax, %4    \n\t"
  65                 "cpuid                  \n\t"
  66                 "mov %0, eax    \n\t"
  67                 "mov %1, ebx    \n\t"
  68                 "mov %2, ecx    \n\t"
  69                 "mov %3, edx    \n\t"
  70                 :"=m"(reg->eax), "=m"(reg->ebx), "=m"(reg->ecx), "=m"(reg->edx)
  71                 :"m"(eax)
  72         );
  73 }
  74
  75 void CPUVendor(void)
  76 {
  77         struct general_registers reg;
  78         char id[15]={0};
  79         RunCPUID(&reg, 0);
  80         if(reg.ebx==0x756e6547 && reg.edx==0x49656e69){
  81                 /*Intel*/
  82                 pc_env.vendor=0;
  83         }else if(reg.ebx==0x69444d41 || reg.ebx==0x68747541){
  84                 /*AMD*/
  85                 pc_env.vendor=1;
  86         }else if(reg.ebx==0x746e6543){
  87                 /*Centaur*/
  88                 pc_env.vendor=2;
  89         }else if(reg.ebx==0x69727943){
  90                 /*Cyrix*/
  91                 pc_env.vendor=3;
  92         }else if(reg.ebx==0x756e6547 || reg.ebx==0x6e617254){
  93                 /*Transmeta*/
  94                 pc_env.vendor=4;
  95         }else if(reg.ebx==0x646f6547){
  96                 /*NSC*/
  97                 pc_env.vendor=5;
  98         }else if(reg.ebx==0x4778654e){
  99                 /*NexGen*/
 100                 pc_env.vendor=6;
 101         }else if(reg.ebx==0x65736952){
 102                 /*Rise*/
 103                 pc_env.vendor=7;
 104         }else if(reg.ebx==0x20536953){
 105                 /*SiS*/
 106                 pc_env.vendor=8;
 107         }else if(reg.ebx==0x20434d55){
 108                 /*UMC*/
 109                 pc_env.vendor=9;
 110         }else if(reg.ebx==0x20414956){
 111                 /*VIA*/
 112                 pc_env.vendor=10;
 113         }else{
 114                 pc_env.vendor=0xff;
 115         }
 116 }