src/southbridge/via/vt8235/vt8235.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 <pc80/keyboard.h>
   7 #include <pc80/i8259.h>
   8 #include "chip.h"
   9
  10 static void keyboard_on(struct device *dev)
  11 {
  12         u8 regval;
  13
  14         regval = pci_read_config8(dev, 0x51);
  15         regval |= 0x05;
  16         regval &= 0xfd;
  17         pci_write_config8(dev, 0x51, regval);
  18
  19         pc_keyboard_init();
  20 }
  21
  22 #ifdef UNUSED_CODE
  23 void dump_south(device_t dev0)
  24 {
  25         int i,j;
  26
  27         for(i = 0; i < 256; i += 16) {
  28                 printk(BIOS_DEBUG, "0x%x: ", i);
  29                 for(j = 0; j < 16; j++) {
  30                         printk(BIOS_DEBUG, "%02x ", pci_read_config8(dev0, i+j));
  31                 }
  32                 printk(BIOS_DEBUG, "\n");
  33         }
  34 }
  35
  36 void set_led(void)
  37 {
  38         // set power led to steady now that coreboot has virtually done its job
  39         device_t dev;
  40         dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, 0);
  41         pci_write_config8(dev, 0x94, 0xb0);
  42 }
  43 #endif
  44
  45 static void vt8235_enable(struct device *dev)
  46 {
  47         u8 regval;
  48         u16 vendor,model;
  49
  50         vendor = pci_read_config16(dev,0);
  51         model = pci_read_config16(dev,0x2);
  52
  53         printk(BIOS_DEBUG, "In vt8235_enable %04x %04x.\n",vendor,model);
  54
  55         /* If this is not the southbridge itself just return.
  56          * This is necessary because USB devices are slot 10, whereas this
  57          * device is slot 11 therefore usb devices get called first during
  58          * the bus scan. We don't want to wait until we could do dev->init
  59          * because that's too late.
  60          */
  61
  62         if( (vendor != PCI_VENDOR_ID_VIA) || (model != PCI_DEVICE_ID_VIA_8235))
  63                 return;
  64
  65         printk(BIOS_DEBUG, "Initialising Devices\n");
  66
  67         /* make sure interrupt controller is configured before keyboard init */
  68         setup_i8259();
  69
  70         /* enable RTC and ethernet */
  71         regval = pci_read_config8(dev, 0x51);
  72         regval |= 0x18;
  73         pci_write_config8(dev, 0x51, regval);
  74
  75         /* turn on keyboard */
  76         keyboard_on(dev);
  77
  78         /* enable USB 1.1 & USB 2.0 - redundant really since we've
  79          * already been there - see note above
  80          */
  81         regval = pci_read_config8(dev, 0x50);
  82         regval &= ~(0x36);
  83         pci_write_config8(dev, 0x50, regval);
  84 }
  85
  86 struct chip_operations southbridge_via_vt8235_ops = {
  87         CHIP_NAME("VIA VT8235 Southbridge")
  88         .enable_dev = vt8235_enable,
  89 };