1 files changed, 43 insertions, 0 deletions
diff --git a/src/southbridge/via/vt8231/acpi.c b/src/southbridge/via/vt8231/acpi.c
new file mode 100644
index 0000000000..647910aef6
--- /dev/null
+++ b/src/southbridge/via/vt8231/acpi.c
@@ -0,0 +1,43 @@
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+
+static void acpi_init(struct device *dev)
+{
+	printk(BIOS_DEBUG, "Configuring VIA ACPI\n");
+
+	// Set ACPI base address to IO 0x4000
+	pci_write_config32(dev, 0x48, 0x4001);
+
+	// Enable ACPI access (and setup like award)
+	pci_write_config8(dev, 0x41, 0x84);
+
+	// Set hardware monitor base address to IO 0x6000
+	pci_write_config32(dev, 0x70, 0x6001);
+
+	// Enable hardware monitor (and setup like award)
+	pci_write_config8(dev, 0x74, 0x01);
+
+	// set IO base address to 0x5000
+	pci_write_config32(dev, 0x90, 0x5001);
+
+	// Enable SMBus
+	pci_write_config8(dev, 0xd2, 0x01);
+}
+
+static struct device_operations acpi_ops = {
+	.read_resources   = pci_dev_read_resources,
+	.set_resources    = pci_dev_set_resources,
+	.enable_resources = pci_dev_enable_resources,
+	.init		  = acpi_init,
+	.enable           = 0,
+	.ops_pci          = 0,
+};
+
+static const struct pci_driver northbridge_driver __pci_driver = {
+	.ops	= &acpi_ops,
+	.vendor = PCI_VENDOR_ID_VIA,
+	.device = PCI_DEVICE_ID_VIA_8231_4,
+};