[cwittich] 63798: [ntoskrnl] handle the case where the cpu does not support returning the brand name CORE-7952

Author: cwittich
Date: Sun Aug  3 19:05:14 2014
New Revision: 63798

URL: http://svn.reactos.org/svn/reactos?rev=63798&view=rev
Log:
[ntoskrnl]
handle the case where the cpu does not support returning the brand name
CORE-7952

Modified:
    trunk/reactos/ntoskrnl/config/i386/cmhardwr.c

Modified: trunk/reactos/ntoskrnl/config/i386/cmhardwr.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/config/i386/cmhard...
==============================================================================
--- trunk/reactos/ntoskrnl/config/i386/cmhardwr.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/config/i386/cmhardwr.c	[iso-8859-1] Sun Aug  3 19:05:14 2014
@@ -224,6 +224,97 @@
     /* Null-terminate the version string */
     BiosVersion[i] = ANSI_NULL;
     return TRUE;
+}
+
+VOID
+NTAPI
+CmpGetIntelBrandString(OUT PCHAR CpuString)
+{
+    ULONG BrandId, Ebx, Signature, Dummy;
+    
+    /* Get the Brand Id */
+    CPUID(0x00000001, &Signature, &Ebx, &Dummy, &Dummy);
+    BrandId = Ebx & 0xFF;
+
+    switch (BrandId)
+    {
+        case 0x01:
+            strcpy(CpuString, "Intel(R) Celeron(R) processor");
+            break;
+        case 0x02:
+        case 0x04:
+            strcpy(CpuString, "Intel(R) Pentium(R) III processor");
+            break;
+        case 0x03:
+            if(Signature == 0x000006B1)
+                strcpy(CpuString, "Intel(R) Celeron(R) processor");
+            else
+                strcpy(CpuString, "Intel(R) Pentium(R) III Xeon(R) processor");
+            break;
+        case 0x06:
+            strcpy(CpuString, "Mobile Intel(R) Pentium(R) III Processor-M");
+            break;
+        case 0x08:
+            if(Signature >= 0x00000F13)
+                strcpy(CpuString, "Intel(R) Genuine Processor");
+            else
+                strcpy(CpuString, "Intel(R) Pentium(R) 4 processor");
+            break;
+        case 0x09:
+            strcpy(CpuString, "Intel(R) Pentium(R) 4 processor");
+            break;
+        case 0x0B:
+            if(Signature >= 0x00000F13)
+                strcpy(CpuString, "Intel(R) Xeon(R) processor");
+            else
+                strcpy(CpuString, "Intel(R) Xeon(R) processor MP");
+            break;
+        case 0x0C:
+            strcpy(CpuString, "Intel(R) Xeon(R) processor MP");
+            break;
+        case 0x0E:
+            if(Signature >= 0x00000F13)
+                strcpy(CpuString, "Mobile Intel(R) Pentium(R) 4 processor-M");
+            else
+                strcpy(CpuString, "Intel(R) Xeon(R) processor");
+            break;
+        case 0x12:
+            strcpy(CpuString, "Intel(R) Celeron(R) M processor");
+            break;
+        case 0x07:
+        case 0x0F:
+        case 0x13:
+        case 0x17:
+            strcpy(CpuString, "Mobile Intel(R) Celeron(R) processor");
+            break;
+        case 0x0A:
+        case 0x14:
+            strcpy(CpuString, "Intel(R) Celeron(R) Processor");
+            break;
+        case 0x15:
+            strcpy(CpuString, "Mobile Genuine Intel(R) Processor");
+            break;
+        case 0x16:
+            strcpy(CpuString, "Intel(R) Pentium(R) M processor");
+            break;
+        default:
+            strcpy(CpuString, "Unknown Intel processor");
+    }
+}
+
+VOID
+NTAPI
+CmpGetVendorString(IN PKPRCB Prcb, OUT PCHAR CpuString)
+{
+    /* Check if we have a Vendor String */
+    if (Prcb->VendorString[0])
+    {
+        strcpy(CpuString, Prcb->VendorString);
+    }
+    else
+    {
+        strcpy(CpuString, "Unknown x86 processor");
+    }
 }

NTSTATUS
@@ -238,7 +329,7 @@
     HANDLE KeyHandle, BiosHandle, SystemHandle, FpuHandle, SectionHandle;
     CONFIGURATION_COMPONENT_DATA ConfigData;
     CHAR Buffer[128];
-    ULONG ExtendedId, Dummy;
+    ULONG VendorId, ExtendedId, Dummy;
     PKPRCB Prcb;
     USHORT IndexTable[MaximumType + 1] = {0};
     ANSI_STRING TempString;
@@ -424,6 +515,8 @@
                 if (!Prcb->CpuID)
                 {
                     /* Uh oh, no CPUID! */
+                    PartialString = CpuString;
+                    CmpGetVendorString(Prcb, PartialString);
                 }
                 else
                 {
@@ -449,6 +542,23 @@
                         /* Null-terminate it */
                         CpuString[47] = ANSI_NULL;
                     }
+                    else
+                    {
+                        CPUID(0x00000000, &Dummy, &VendorId, &Dummy, &Dummy);
+                        PartialString = CpuString;
+                        switch (VendorId)
+                        {
+                            case 'uneG': /* Intel */
+                                CmpGetIntelBrandString(PartialString);
+                                break;
+                            case 'htuA': /* AMD */
+                                /* FIXME */
+                                CmpGetVendorString(Prcb, PartialString);
+                                break;
+                            default:
+                                CmpGetVendorString(Prcb, PartialString);
+                        }
+                    }
                 }

/* Go back to user affinity */