src/mainboard/via/epia-m/mainboard.c

   1 #include <console/console.h>
   2 #include <device/device.h>
   3 #include <device/pci.h>
   4 #include <device/pci_ids.h>
   5 #include <device/pci_ops.h>
   6
   7 #include <arch/io.h>
   8 #include "chip.h"
   9
  10 void vga_enable_console();
  11
  12
  13 static int
  14 mainboard_scan_bus(device_t root, int maxbus)
  15 {
  16         int retval;
  17         printk_spew("%s: root %p maxbus %d\n", __FUNCTION__, root, maxbus);
  18         retval = pci_scan_bus(root->bus, 0, 0xff, maxbus);
  19         printk_spew("DONE %s: return %d\n", __FUNCTION__, maxbus);
  20         return maxbus;
  21 }
  22
  23 void vga_fixup(void) {
  24         // we do this right here because:
  25         // - all the hardware is working, and some VGA bioses seem to need
  26         //   that
  27         // - we need page 0 below for linuxbios tables.
  28
  29         printk_debug("INSTALL REAL-MODE IDT\n");
  30         setup_realmode_idt();
  31         printk_debug("DO THE VGA BIOS\n");
  32         do_vgabios();
  33         post_code(0x93);
  34         vga_enable_console();
  35
  36
  37 }
  38
  39 void write_protect_vgabios(void)
  40 {
  41         device_t dev;
  42
  43         printk_info("write_protect_vgabios\n");
  44         dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x3123, 0);
  45         if(dev)
  46                 pci_write_config8(dev, 0x61, 0xaa);
  47
  48 }
  49
  50 static void
  51 enable(struct chip *chip, enum chip_pass pass)
  52 {
  53
  54         struct mainboard_tyan_s4882_config *conf =
  55                 (struct mainboard_tyan_s4882_config *)chip->chip_info;
  56
  57         switch (pass) {
  58                 default: break;
  59 //              case CONF_PASS_PRE_CONSOLE:
  60 //              case CONF_PASS_PRE_PCI:
  61                 case CONF_PASS_POST_PCI:
  62 //                case CONF_PASS_PRE_BOOT:
  63 //                      if (conf->fixup_scsi)
  64 //                              onboard_scsi_fixup();
  65 //                      if (conf->fixup_vga)
  66 //                              vga_fixup();
  67                         printk_debug("mainboard fixup pass %d done\r\n",
  68                                         pass);
  69                         break;
  70         }
  71
  72 }
  73 static struct device_operations mainboard_operations = {
  74         .read_resources   = root_dev_read_resources,
  75         .set_resources    = root_dev_set_resources,
  76         .enable_resources = enable_childrens_resources,
  77         .init             = 0,
  78         .scan_bus         = mainboard_scan_bus,
  79         .enable           = 0,
  80 };
  81
  82 static void enumerate(struct chip *chip)
  83 {
  84         struct chip *child;
  85         dev_root.ops = &mainboard_operations;
  86         chip->dev = &dev_root;
  87         chip->bus = 0;
  88         for(child = chip->children; child; child = child->next) {
  89                 child->bus = &dev_root.link[0];
  90         }
  91 }
  92 struct chip_control mainboard_via_epia_m_control = {
  93         .enumerate = enumerate,
  94         .name      = "VIA EPIA-M mainboard ",
  95         .enable = enable
  96 };
  97