diff --git a/src/cpu/amd/model_10xxx/defaults.h b/src/cpu/amd/model_10xxx/defaults.h
index 6529008..b1b245a 100644
--- a/src/cpu/amd/model_10xxx/defaults.h
+++ b/src/cpu/amd/model_10xxx/defaults.h
@@ -315,44 +315,44 @@ static const struct {
 	u32 mask;
 } fam10_htphy_default[] = {
 
-	/* Errata 344 - Fam10 C2
+	/* Errata 344 - Fam10 C2/D0
 	 * System software should set bit 6 of F4x1[9C, 94, 8C, 84]_x[78:70, 68:60]. */
-	{ 0x60, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x60, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x61, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x61, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x62, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x62, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x63, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x63, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x64, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x64, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x65, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x65, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x66, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x66, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x67, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x67, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x68, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x68, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
 
-	{ 0x70, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x70, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x71, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x71, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x72, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x72, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x73, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x73, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x74, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x74, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x75, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x75, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x76, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x76, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x77, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x77, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
-	{ 0x78, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x78, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
 
 	/* Errata 354 - Fam10 C2
@@ -395,20 +395,20 @@ static const struct {
 	{ 0x58, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00000040, 0x00000040 },
 
-	/* Errata 327 - Fam10 C2
+	/* Errata 327 - Fam10 C2/D0
 	 * BIOS should set the Link Phy Impedance Register[RttCtl]
 	 * (F4x1[9C, 94, 8C, 84]_x[D0, C0][31:29]) to 010b and
 	 * Link Phy Impedance Register[RttIndex]
 	 * (F4x1[9C, 94, 8C, 84]_x[D0, C0][20:16]) to 00100b */
-	{ 0xC0, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0xC0, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x40040000, 0xe01F0000 },
-	{ 0xD0, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0xD0, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x40040000, 0xe01F0000 },
 
-	{ 0x520A, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x520A, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00004000, 0x00006000 },	/* HT_PHY_DLL_REG */
 
-	{ 0x530A, AMD_RB_C2 | AMD_DA_C2, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
+	{ 0x530A, AMD_RB_C2 | AMD_DA_C2 | AMD_HY_D0, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
 	  0x00004000, 0x00006000 },	/* HT_PHY_DLL_REG */
 
 	{ 0x520A, AMD_DR_ALL, AMD_PTYPE_ALL, HTPHY_LINKTYPE_ALL,
diff --git a/src/cpu/amd/model_10xxx/model_10xxx_init.c b/src/cpu/amd/model_10xxx/model_10xxx_init.c
index 0b54d44..daf3ece 100644
--- a/src/cpu/amd/model_10xxx/model_10xxx_init.c
+++ b/src/cpu/amd/model_10xxx/model_10xxx_init.c
@@ -146,6 +146,7 @@ static struct cpu_device_id cpu_table[] = {
 	{ X86_VENDOR_AMD, 0x100F42 },           /* RB-C2 */ 
 	{ X86_VENDOR_AMD, 0x100F52 },           /* BL-C2 */ 
 	{ X86_VENDOR_AMD, 0x100F62 },           /* DA-C2 */ 
+	{ X86_VENDOR_AMD, 0x100F80 },           /* HY-D0 */ 
 	{ 0, 0 },
 };
 static struct cpu_driver model_10xxx __cpu_driver = {
diff --git a/src/cpu/amd/quadcore/quadcore.c b/src/cpu/amd/quadcore/quadcore.c
index ac62981..067560d 100644
--- a/src/cpu/amd/quadcore/quadcore.c
+++ b/src/cpu/amd/quadcore/quadcore.c
@@ -29,7 +29,10 @@ static u32 get_core_num_in_bsp(u32 nodeid)
 	u32 dword;
 	dword = pci_read_config32(NODE_PCI(nodeid, 3), 0xe8);
 	dword >>= 12;
-	dword &= 3;
+	if ((cpuid_ecx(0x80000008) & 0xff) > 3)
+	    dword = ((dword & 8) >> 1) | (dword & 3);
+	else
+	    dword &= 3;
 	return dword;
 }
 
@@ -53,7 +56,7 @@ static void set_apicid_cpuid_lo(void) { }
 
 static void real_start_other_core(u32 nodeid, u32 cores)
 {
-	u32 dword;
+	u32 dword, i;
 
 	printk_debug("Start other core - nodeid: %02x  cores: %02x\n", nodeid, cores);
 
@@ -69,11 +72,10 @@ static void real_start_other_core(u32 nodeid, u32 cores)
 
 	if(cores > 1) {
 		dword = pci_read_config32(NODE_PCI(nodeid, 0), 0x168);
-		dword |= (1 << 0);	// core2
-		if(cores > 2) {		// core3
-			dword |= (1 << 1);
+		for (i = 0; i < cores - 1; i++) {
+			dword |= 1 << i;
+			pci_write_config32(NODE_PCI(nodeid, 0), 0x168, dword);
 		}
-		pci_write_config32(NODE_PCI(nodeid, 0), 0x168, dword);
 	}
 }
 
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index e7ac7ef..904393b 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -1364,6 +1364,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
 		if (dev && dev->enabled) {
 			j = pci_read_config32(dev, 0xe8);
 			cores_found = (j >> 12) & 3; // dev is func 3
+			if (siblings > 3)
+			    cores_found |= (j >> 13) & 4;
 			printk_debug("  %s siblings=%d\n", dev_path(dev), cores_found);
 		}
 
diff --git a/src/northbridge/amd/amdfam10/raminit_amdmct.c b/src/northbridge/amd/amdfam10/raminit_amdmct.c
index 7bd6d4e..9d4979b 100644
--- a/src/northbridge/amd/amdfam10/raminit_amdmct.c
+++ b/src/northbridge/amd/amdfam10/raminit_amdmct.c
@@ -155,6 +155,9 @@ u32 mctGetLogicalCPUID(u32 Node)
 	case 0x10062:
 		ret = AMD_DA_C2;
 		break;
+	case 0x10080:
+		ret = AMD_HY_D0;
+		break;
 	default:
 		/* FIXME: mabe we should die() here. */
 		print_err("FIXME! CPU Version unknown or not supported! \n");
diff --git a/src/northbridge/amd/amdmct/amddefs.h b/src/northbridge/amd/amdmct/amddefs.h
index 004e4cf..1b75888 100644
--- a/src/northbridge/amd/amdmct/amddefs.h
+++ b/src/northbridge/amd/amdmct/amddefs.h
@@ -42,6 +42,7 @@
 #define	AMD_DR_B3	0x00800000	/* Barcelona B3 */
 #define	AMD_RB_C2	0x01000000	/* Shanghai C2 */
 #define	AMD_DA_C2	0x02000000	/* XXXX C2 */
+#define	AMD_HY_D0	0x04000000	/* Istanbul D0 */
 
 /*
  * Groups - Create as many as you wish, from the above public values
@@ -59,7 +60,7 @@
 #define	AMD_DR_LT_B3	(AMD_DR_B0 | AMD_DR_B1 | AMD_DR_B2 | AMD_DR_BA)
 #define	AMD_DR_GT_B0	(AMD_DR_ALL & ~(AMD_DR_B0))
 #define	AMD_DR_ALL	(AMD_DR_Bx)
-#define	AMD_FAM10_ALL	(AMD_DR_ALL | AMD_RB_C2)
+#define	AMD_FAM10_ALL	(AMD_DR_ALL | AMD_RB_C2 | AMD_HY_D0)
 #define	AMD_FAM10_GT_B0	(AMD_FAM10_ALL & ~(AMD_DR_B0))
 
 /*
