src/southbridge/via/vt8231/vt8231_acpi.c

   1 #include <console/console.h>
   2 #include <device/device.h>
   3 #include <device/pci.h>
   4 #include <device/pci_ops.h>
   5 #include <device/pci_ids.h>
   6
   7 static void acpi_init(struct device *dev)
   8 {
   9         printk(BIOS_DEBUG, "Configuring VIA ACPI\n");
  10
  11         // Set ACPI base address to IO 0x4000
  12         pci_write_config32(dev, 0x48, 0x4001);
  13
  14         // Enable ACPI access (and setup like award)
  15         pci_write_config8(dev, 0x41, 0x84);
  16
  17         // Set hardware monitor base address to IO 0x6000
  18         pci_write_config32(dev, 0x70, 0x6001);
  19
  20         // Enable hardware monitor (and setup like award)
  21         pci_write_config8(dev, 0x74, 0x01);
  22
  23         // set IO base address to 0x5000
  24         pci_write_config32(dev, 0x90, 0x5001);
  25
  26         // Enable SMBus
  27         pci_write_config8(dev, 0xd2, 0x01);
  28 }
  29
  30 static struct device_operations acpi_ops = {
  31         .read_resources   = pci_dev_read_resources,
  32         .set_resources    = pci_dev_set_resources,
  33         .enable_resources = pci_dev_enable_resources,
  34         .init             = acpi_init,
  35         .enable           = 0,
  36         .ops_pci          = 0,
  37 };
  38
  39 static const struct pci_driver northbridge_driver __pci_driver = {
  40         .ops    = &acpi_ops,
  41         .vendor = PCI_VENDOR_ID_VIA,
  42         .device = PCI_DEVICE_ID_VIA_8231_4,
  43 };