src/mainboard/broadcom/blast/get_bus_conf.c

   1 #include <console/console.h>
   2 #include <device/pci.h>
   3 #include <device/pci_ids.h>
   4 #include <string.h>
   5 #include <stdint.h>
   6 #if CONFIG_LOGICAL_CPUS==1
   7 #include <cpu/amd/dualcore.h>
   8 #endif
   9
  10 #include <cpu/amd/amdk8_sysconf.h>
  11
  12
  13 // Global variables for MB layouts and these will be shared by irqtable mptable and acpi_tables
  14 //busnum is default
  15 unsigned char bus_isa = 10;
  16 unsigned char bus_bcm5780[7];
  17 unsigned char bus_bcm5785_0 = 1;
  18 unsigned char bus_bcm5785_1 = 8;
  19 unsigned char bus_bcm5785_1_1 = 9;
  20 unsigned apicid_bcm5785[3];
  21
  22
  23 unsigned pci1234x[] =
  24 {        //Here you only need to set value in pci1234 for HT-IO that could be installed or not
  25          //You may need to preset pci1234 for HTIO board, please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
  26         0x0000ff0,
  27 //        0x0000ff0,
  28 //        0x0000ff0,
  29 //        0x0000ff0,
  30 //        0x0000ff0,
  31 //        0x0000ff0,
  32 //        0x0000ff0,
  33 //        0x0000ff0
  34 };
  35 unsigned hcdnx[] =
  36 { //HT Chain device num, actually it is unit id base of every ht device in chain, assume every chain only have 4 ht device at most
  37         0x20202020,
  38 //        0x20202020,
  39 //        0x20202020,
  40 //        0x20202020,
  41 //        0x20202020,
  42 //        0x20202020,
  43 //        0x20202020,
  44 //        0x20202020,
  45 };
  46 unsigned sbdn2;
  47
  48 extern void get_sblk_pci1234(void);
  49
  50 static unsigned get_bus_conf_done = 0;
  51
  52 void get_bus_conf(void)
  53 {
  54
  55         unsigned apicid_base;
  56
  57         device_t dev;
  58         int i;
  59
  60         if(get_bus_conf_done==1) return; //do it only once
  61
  62         get_bus_conf_done = 1;
  63
  64         sysconf.hc_possible_num = sizeof(pci1234x)/sizeof(pci1234x[0]);
  65         for(i=0;i<sysconf.hc_possible_num; i++) {
  66                 sysconf.pci1234[i] = pci1234x[i];
  67                 sysconf.hcdn[i] = hcdnx[i];
  68         }
  69
  70         get_sblk_pci1234();
  71
  72         sysconf.sbdn = (sysconf.hcdn[0] >> 8) & 0xff;
  73         sbdn2 = sysconf.hcdn[0] & 0xff; // bcm5780
  74
  75         bus_bcm5785_0 = (sysconf.pci1234[0] >> 16) & 0xff;
  76         bus_bcm5780[0] = bus_bcm5785_0;
  77
  78                 /* bcm5785 */
  79         dev = dev_find_slot(bus_bcm5785_0, PCI_DEVFN(sysconf.sbdn,0));
  80         if (dev) {
  81                 bus_bcm5785_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
  82                 dev = dev_find_slot(bus_bcm5785_1, PCI_DEVFN(0x0d,0));
  83                 if(dev) {
  84                         bus_bcm5785_1_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
  85 #if HT_CHAIN_END_UNITID_BASE >= HT_CHAIN_UNITID_BASE
  86                         bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
  87                         bus_isa++;
  88 //                      printk_debug("bus_isa=%d\n",bus_isa);
  89 #endif
  90                 }
  91         }
  92         else {
  93                 printk_debug("ERROR - could not find PCI %02x:07.0, using defaults\n", bus_bcm5785_0);
  94         }
  95
  96                 /* bcm5780 */
  97         for(i = 1; i < 7; i++) {
  98                 dev = dev_find_slot(bus_bcm5780[0], PCI_DEVFN(sbdn2 + i - 1,0));
  99                 if(dev) {
 100                         bus_bcm5780[i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 101 #if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
 102                         bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
 103                         bus_isa++;
 104 //                      printk_debug("bus_isa=%d\n",bus_isa);
 105 #endif
 106
 107                 }
 108                 else {
 109                         printk_debug("ERROR - could not find PCI %02x:01.0, using defaults\n", bus_bcm5780[i]);
 110                 }
 111         }
 112
 113
 114 /*I/O APICs:    APIC ID Version State           Address*/
 115 #if CONFIG_LOGICAL_CPUS==1
 116         apicid_base = get_apicid_base(3);
 117 #else
 118         apicid_base = CONFIG_MAX_PHYSICAL_CPUS;
 119 #endif
 120         for(i=0;i<3;i++)
 121                 apicid_bcm5785[i] = apicid_base+i;
 122 }