stos/amd64: cpu: Obtain more processor info

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/arch/amd64/cpu/init.c

@@ -14,12 +14,67 @@
 #define DTRACE(Fmt, ...) \
     TRACE("[ CPU ]: " Fmt, ##__VA_ARGS__)
 
+/* Processor types */
+#define PROCESSOR_OEM       0
+#define PROCESSOR_OVERDRIVE 1
+#define PROCESSOR_DUAL      2
+
+#define PROCESSOR_TYPE(TYPE)                \
+    ((TYPE) >= NELEM(ProcessorType))        \
+        ? "unknown"                         \
+        : ProcessorType[(Type)]
+
+/* Processor type lookup table */
+static const CHAR *ProcessorType[] = {
+    [PROCESSOR_OEM] = "OEM processor",
+    [PROCESSOR_OVERDRIVE] = "Intel overdrive processor",
+    [PROCESSOR_DUAL] = "Intel P5 dual processor"
+};
+
+/*
+ * Called by ProcessorIdentify()
+ */
+static VOID
+ProcessorIdentify1(MCB *Mcb)
+{
+    UCHAR ManufactId[13];
+    ULONG Ebx, Edx, Ecx, Unused;
+
+    if (Mcb == NULL) {
+        return;
+    }
+
+    /* Grab the manufacturer ID */
+    ManufactId[12] = '\0';
+    CPUID(0, Unused, Ebx, Ecx, Edx);
+
+    /* DWORD 0 */
+    ManufactId[0] = Ebx & 0xFF;
+    ManufactId[1] = (Ebx >> 8) & 0xFF;
+    ManufactId[2] = (Ebx >> 16) & 0xFF;
+    ManufactId[3] = (Ebx >> 24) & 0xFF;
+
+    /* DWORD 1 */
+    ManufactId[4] = Edx & 0xFF;
+    ManufactId[5] = (Edx >> 8) & 0xFF;
+    ManufactId[6] = (Edx >> 16) & 0xFF;
+    ManufactId[7] = (Edx >> 24) & 0xFF;
+
+    /* DWORD 2 */
+    ManufactId[8] = Ecx & 0xFF;
+    ManufactId[9] = (Ecx >> 8) & 0xFF;
+    ManufactId[10] = (Ecx >> 16) & 0xFF;
+    ManufactId[11] = (Ecx >> 24) & 0xFF;
+    DTRACE("vendor : %s\n", ManufactId);
+}
+
 static VOID
 ProcessorIdentify(MCB *Mcb)
 {
     ULONG Eax, Unused;
     UCHAR ModelLow, ModelHigh;
     UCHAR FamilyLow, FamilyHigh;
+    UCHAR Type;
 
     if (Mcb == NULL) {
         return;
@@ -37,9 +92,14 @@ ProcessorIdentify(MCB *Mcb)
     FamilyHigh = (Eax >> 20) & 0xFF;
     Mcb->FamilyId = (FamilyHigh << 4) | FamilyLow;
 
+    /* Extract the processor type */
+    Type = (Eax >> 12) & 3;
+
     /* Informational logging */
     DTRACE("model  : %X\n", Mcb->ModelId);
     DTRACE("family : %X\n", Mcb->FamilyId);
+    DTRACE("type   : %s\n", PROCESSOR_TYPE(Type));
+    ProcessorIdentify1(Mcb);
 }
 
 VOID