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 #include "vt8231.h"
   7
   8 static void acpi_init(struct device *dev)
   9 {
  10         printk_debug("Configuring VIA ACPI\n");
  11
  12         // Set ACPI base address to IO 0x4000
  13         pci_write_config32(dev, 0x48, 0x4001);
  14
  15         // Enable ACPI access (and setup like award)
  16         pci_write_config8(dev, 0x41, 0x84);
  17
  18         // Set hardware monitor base address to IO 0x6000
  19         pci_write_config32(dev, 0x70, 0x6001);
  20
  21         // Enable hardware monitor (and setup like award)
  22         pci_write_config8(dev, 0x74, 0x01);
  23
  24         // set IO base address to 0x5000
  25         pci_write_config32(dev, 0x90, 0x5001);
  26
  27         // Enable SMBus
  28         pci_write_config8(dev, 0xd2, 0x01);
  29 }
  30
  31 static struct device_operations acpi_ops = {
  32         .read_resources   = pci_dev_read_resources,
  33         .set_resources    = pci_dev_set_resources,
  34         .enable_resources = pci_dev_enable_resources,
  35         .init             = acpi_init,
  36         .enable           = 0,
  37         .ops_pci          = 0,
  38 };
  39
  40 static const struct pci_driver northbridge_driver __pci_driver = {
  41         .ops    = &acpi_ops,
  42         .vendor = PCI_VENDOR_ID_VIA,
  43         .device = PCI_DEVICE_ID_VIA_8231_4,
  44 };