qemu/roms/seabios/src/fw/pirtable.c

   1 // PIR table generation (for emulators)
   2 // DO NOT ADD NEW FEATURES HERE.  (See paravirt.c / biostables.c instead.)
   3 //
   4 // Copyright (C) 2008  Kevin O'Connor <kevin@koconnor.net>
   5 // Copyright (C) 2002  MandrakeSoft S.A.
   6 //
   7 // This file may be distributed under the terms of the GNU LGPLv3 license.
   8
   9 #include "config.h" // CONFIG_*
  10 #include "output.h" // dprintf
  11 #include "std/pirtable.h" // struct pir_header
  12 #include "string.h" // checksum
  13 #include "util.h" // PirAddr
  14
  15 struct pir_table {
  16     struct pir_header pir;
  17     struct pir_slot slots[6];
  18 } PACKED;
  19
  20 static struct pir_table PIR_TABLE = {
  21     .pir = {
  22         .version = 0x0100,
  23         .size = sizeof(struct pir_table),
  24         .router_devfunc = 0x08,
  25         .compatible_devid = 0x122e8086,
  26     },
  27     .slots = {
  28         {
  29             // first slot entry PCI-to-ISA (embedded)
  30             .dev = 1<<3,
  31             .links = {
  32                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  33                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  34                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  35                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  36             },
  37             .slot_nr = 0, // embedded
  38         }, {
  39             // second slot entry: 1st PCI slot
  40             .dev = 2<<3,
  41             .links = {
  42                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  43                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  44                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  45                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  46             },
  47             .slot_nr = 1,
  48         }, {
  49             // third slot entry: 2nd PCI slot
  50             .dev = 3<<3,
  51             .links = {
  52                 {.link = 0x62, .bitmap = 0xdef8}, // INTA#
  53                 {.link = 0x63, .bitmap = 0xdef8}, // INTB#
  54                 {.link = 0x60, .bitmap = 0xdef8}, // INTC#
  55                 {.link = 0x61, .bitmap = 0xdef8}, // INTD#
  56             },
  57             .slot_nr = 2,
  58         }, {
  59             // 4th slot entry: 3rd PCI slot
  60             .dev = 4<<3,
  61             .links = {
  62                 {.link = 0x63, .bitmap = 0xdef8}, // INTA#
  63                 {.link = 0x60, .bitmap = 0xdef8}, // INTB#
  64                 {.link = 0x61, .bitmap = 0xdef8}, // INTC#
  65                 {.link = 0x62, .bitmap = 0xdef8}, // INTD#
  66             },
  67             .slot_nr = 3,
  68         }, {
  69             // 5th slot entry: 4rd PCI slot
  70             .dev = 5<<3,
  71             .links = {
  72                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  73                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  74                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  75                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  76             },
  77             .slot_nr = 4,
  78         }, {
  79             // 6th slot entry: 5rd PCI slot
  80             .dev = 6<<3,
  81             .links = {
  82                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  83                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  84                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  85                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  86             },
  87             .slot_nr = 5,
  88         },
  89     }
  90 };
  91
  92 void
  93 pirtable_setup(void)
  94 {
  95     if (! CONFIG_PIRTABLE)
  96         return;
  97
  98     dprintf(3, "init PIR table\n");
  99
 100     PIR_TABLE.pir.signature = PIR_SIGNATURE;
 101     PIR_TABLE.pir.checksum -= checksum(&PIR_TABLE, sizeof(PIR_TABLE));
 102     copy_pir(&PIR_TABLE);
 103 }