diff --git a/src/northbridge/amd/amdk8/cpu_rev.c b/src/northbridge/amd/amdk8/cpu_rev.c
index 1eb47f85f5..c76efa2f39 100644
--- a/src/northbridge/amd/amdk8/cpu_rev.c
+++ b/src/northbridge/amd/amdk8/cpu_rev.c
@@ -3,44 +3,23 @@ static int is_cpu_rev_a0(void)
 {
 	return (cpuid_eax(1) & 0xfffef) == 0x0f00;
 }
-//AMD_D0_SUPPORT
-static int is_cpu_pre_d0(void)
-{
-        return (cpuid_eax(1) & 0xfff0f) < 0x10f00;
-}
-
-static int is_cpu_d0(void)
-{
-        return (cpuid_eax(1) & 0xfff0f) == 0x10f00;
-}
-
-//AMD_E0_SUPPORT
-static int is_cpu_pre_e0(void)
-{
-        return (cpuid_eax(1) & 0xfff0f) < 0x20f00;
-}
-
-static int is_cpu_e0(void)
-{
-        return (cpuid_eax(1) & 0xfff00) == 0x20f00;
-}
-
-static int is_cpu_pre_c0(void)
-{
-	return (cpuid_eax(1) & 0xfffef) < 0x0f48;
-}
-
-static int is_cpu_c0(void)
-{
-	return (cpuid_eax(1) & 0xfffef) == 0x0f48;
-}
 
 static int is_cpu_pre_b3(void)
 {
 	return (cpuid_eax(1) & 0xfffef) < 0x0f41;
 }
 
-static int is_cpu_b3(void)
+static int is_cpu_pre_c0(void)
 {
-	return (cpuid_eax(1) & 0xfffef) == 0x0f41;
+	return (cpuid_eax(1) & 0xfffef) < 0x0f48;
+}
+
+static int is_cpu_pre_d0(void)
+{
+        return (cpuid_eax(1) & 0xfff0f) < 0x10000;
+}
+
+static int is_cpu_pre_e0(void)
+{
+        return (cpuid_eax(1) & 0xfff0f) < 0x20f00;
 }