diff --git a/src/southbridge/amd/Makefile.inc b/src/southbridge/amd/Makefile.inc
index cce4702058..9ec0171c4f 100644
--- a/src/southbridge/amd/Makefile.inc
+++ b/src/southbridge/amd/Makefile.inc
@@ -15,6 +15,7 @@ subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB700) += cimx
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB800) += cimx
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB900) += cimx
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_HUDSON) += agesa
+subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE) += agesa
 
 ifeq ($(CONFIG_HAVE_ACPI_RESUME), y)
 ifeq ($(CONFIG_CPU_AMD_AGESA), y)
diff --git a/src/southbridge/amd/agesa/Makefile.inc b/src/southbridge/amd/agesa/Makefile.inc
index 822c6fd475..fdd5d8047a 100644
--- a/src/southbridge/amd/agesa/Makefile.inc
+++ b/src/southbridge/amd/agesa/Makefile.inc
@@ -17,3 +17,4 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 #
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_HUDSON) += hudson
+subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE) += hudson
diff --git a/src/southbridge/amd/agesa/hudson/Kconfig b/src/southbridge/amd/agesa/hudson/Kconfig
index af305eed72..5cb17223f7 100644
--- a/src/southbridge/amd/agesa/hudson/Kconfig
+++ b/src/southbridge/amd/agesa/hudson/Kconfig
@@ -23,7 +23,13 @@ config SOUTHBRIDGE_AMD_AGESA_HUDSON
 	select HAVE_USBDEBUG
 	select HAVE_HARD_RESET
 
-if SOUTHBRIDGE_AMD_AGESA_HUDSON
+config SOUTHBRIDGE_AMD_AGESA_YANGTZE
+	bool
+	select IOAPIC
+	select HAVE_USBDEBUG
+	select HAVE_HARD_RESET
+
+if SOUTHBRIDGE_AMD_AGESA_HUDSON || SOUTHBRIDGE_AMD_AGESA_YANGTZE
 
 config BOOTBLOCK_SOUTHBRIDGE_INIT
 	string
@@ -72,17 +78,20 @@ config HUDSON_GEC_FWM
 
 config HUDSON_XHCI_FWM_FILE
         string "XHCI firmware path and filename"
-        default "3rdparty/southbridge/amd/hudson/xhci.bin"
+        default "3rdparty/southbridge/amd/hudson/xhci.bin" if SOUTHBRIDGE_AMD_AGESA_HUDSON
+        default "3rdparty/southbridge/amd/yangtze/xhci.bin" if SOUTHBRIDGE_AMD_AGESA_YANGTZE
 	depends on HUDSON_XHCI_FWM
 
 config HUDSON_IMC_FWM_FILE
         string "IMC firmware path and filename"
-        default "3rdparty/southbridge/amd/hudson/imc.bin"
+        default "3rdparty/southbridge/amd/hudson/imc.bin" if SOUTHBRIDGE_AMD_AGESA_HUDSON
+        default "3rdparty/southbridge/amd/yangtze/imc.bin" if SOUTHBRIDGE_AMD_AGESA_YANGTZE
 	depends on HUDSON_IMC_FWM
 
 config HUDSON_GEC_FWM_FILE
         string "GEC firmware path and filename"
-        default "3rdparty/southbridge/amd/hudson/gec.bin"
+        default "3rdparty/southbridge/amd/hudson/gec.bin"  if SOUTHBRIDGE_AMD_AGESA_HUDSON
+        default "3rdparty/southbridge/amd/yangtze/gec.bin"  if SOUTHBRIDGE_AMD_AGESA_YANGTZE
 	depends on HUDSON_GEC_FWM
 
 config HUDSON_FWM
@@ -232,4 +241,10 @@ config HUDSON_LEGACY_FREE
 	  Select y if there is no keyboard controller in the system.
 	  This sets variables in AGESA and ACPI.
 
-endif # SOUTHBRIDGE_AMD_AGESA_HUDSON
+endif # SOUTHBRIDGE_AMD_AGESA_HUDSON || SOUTHBRIDGE_AMD_AGESA_YANGTZE
+
+if SOUTHBRIDGE_AMD_AGESA_YANGTZE
+	config AMD_SB_SPI_TX_LEN
+		int
+		default 64
+endif
diff --git a/src/southbridge/amd/agesa/hudson/sata.c b/src/southbridge/amd/agesa/hudson/sata.c
index cc8bf953cc..bc1cd92d97 100644
--- a/src/southbridge/amd/agesa/hudson/sata.c
+++ b/src/southbridge/amd/agesa/hudson/sata.c
@@ -49,3 +49,9 @@ static const struct pci_driver sata0_driver __pci_driver = {
 	.vendor = PCI_VENDOR_ID_AMD,
 	.device = PCI_DEVICE_ID_ATI_SB900_SATA,
 };
+
+static const struct pci_driver sata0_driver_ahci __pci_driver = {
+	.ops = &sata_ops,
+	.vendor = PCI_VENDOR_ID_AMD,
+	.device = PCI_DEVICE_ID_ATI_SB900_SATA_AHCI,
+};
diff --git a/src/southbridge/amd/agesa/hudson/sm.c b/src/southbridge/amd/agesa/hudson/sm.c
index 3b727b9a7a..d6ca215a6a 100644
--- a/src/southbridge/amd/agesa/hudson/sm.c
+++ b/src/southbridge/amd/agesa/hudson/sm.c
@@ -82,6 +82,7 @@
 
 static void sm_init(device_t dev)
 {
+	setup_ioapic(IO_APIC_ADDR, CONFIG_MAX_CPUS);
 }
 
 static int lsmbus_recv_byte(device_t dev)
diff --git a/src/southbridge/amd/agesa/hudson/spi.c b/src/southbridge/amd/agesa/hudson/spi.c
index 1a63ce2b15..b89ea5d66e 100644
--- a/src/southbridge/amd/agesa/hudson/spi.c
+++ b/src/southbridge/amd/agesa/hudson/spi.c
@@ -61,7 +61,9 @@ int spi_xfer(struct spi_slave *slave, const void *dout,
 	/* First byte is cmd which can not being sent through FIFO. */
 	u8 cmd = *(u8 *)dout++;
 	u8 readoffby1;
+#if !CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE
 	u8 readwrite;
+#endif
 	u8 bytesout, bytesin;
 	u8 count;
 
@@ -71,8 +73,15 @@ int spi_xfer(struct spi_slave *slave, const void *dout,
 
 	readoffby1 = bytesout ? 0 : 1;
 
+#if CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE
+	write8(spibar + 0x1E, 5);
+	write8(spibar + 0x1F, bytesout); /* SpiExtRegIndx [5] - TxByteCount */
+	write8(spibar + 0x1E, 6);
+	write8(spibar + 0x1F, bytesin);  /* SpiExtRegIndx [6] - RxByteCount */
+#else
 	readwrite = (bytesin + readoffby1) << 4 | bytesout;
 	write8(spibar + 1, readwrite);
+#endif
 	write8(spibar + 0, cmd);
 
 	reset_internal_fifo_pointer();