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/multicore.h>
   8 #endif
   9
  10 #include <cpu/amd/amdk8_sysconf.h>
  11 #include <stdlib.h>
  12
  13
  14 // Global variables for MB layouts and these will be shared by irqtable mptable and acpi_tables
  15 //busnum is default
  16 unsigned char bus_isa = 10;
  17 unsigned char bus_bcm5780[7];
  18 unsigned char bus_bcm5785_0 = 1;
  19 unsigned char bus_bcm5785_1 = 8;
  20 unsigned char bus_bcm5785_1_1 = 9;
  21 unsigned apicid_bcm5785[3];
  22
  23
  24 unsigned pci1234x[] =
  25 {        //Here you only need to set value in pci1234 for HT-IO that could be installed or not
  26          //You may need to preset pci1234 for HTIO board, please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
  27         0x0000ff0,
  28 //        0x0000ff0,
  29 //        0x0000ff0,
  30 //        0x0000ff0,
  31 //        0x0000ff0,
  32 //        0x0000ff0,
  33 //        0x0000ff0,
  34 //        0x0000ff0
  35 };
  36 unsigned hcdnx[] =
  37 { //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
  38         0x20202020,
  39 //        0x20202020,
  40 //        0x20202020,
  41 //        0x20202020,
  42 //        0x20202020,
  43 //        0x20202020,
  44 //        0x20202020,
  45 //        0x20202020,
  46 };
  47 unsigned sbdn2;
  48
  49
  50
  51 static unsigned get_bus_conf_done = 0;
  52
  53 void get_bus_conf(void)
  54 {
  55
  56         unsigned apicid_base;
  57
  58         device_t dev;
  59         int i;
  60
  61         if(get_bus_conf_done==1) return; //do it only once
  62
  63         get_bus_conf_done = 1;
  64
  65         sysconf.hc_possible_num = ARRAY_SIZE(pci1234x);
  66         for(i=0;i<sysconf.hc_possible_num; i++) {
  67                 sysconf.pci1234[i] = pci1234x[i];
  68                 sysconf.hcdn[i] = hcdnx[i];
  69         }
  70
  71         get_sblk_pci1234();
  72
  73         sysconf.sbdn = (sysconf.hcdn[0] >> 8) & 0xff;
  74         sbdn2 = sysconf.hcdn[0] & 0xff; // bcm5780
  75
  76         bus_bcm5785_0 = (sysconf.pci1234[0] >> 16) & 0xff;
  77         bus_bcm5780[0] = bus_bcm5785_0;
  78
  79                 /* bcm5785 */
  80         dev = dev_find_slot(bus_bcm5785_0, PCI_DEVFN(sysconf.sbdn,0));
  81         if (dev) {
  82                 bus_bcm5785_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
  83                 dev = dev_find_slot(bus_bcm5785_1, PCI_DEVFN(0x0d,0));
  84                 if(dev) {
  85                         bus_bcm5785_1_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
  86 #if CONFIG_HT_CHAIN_END_UNITID_BASE >= CONFIG_HT_CHAIN_UNITID_BASE
  87                         bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
  88                         bus_isa++;
  89 //                      printk(BIOS_DEBUG, "bus_isa=%d\n",bus_isa);
  90 #endif
  91                 }
  92         }
  93         else {
  94                 printk(BIOS_DEBUG, "ERROR - could not find PCI %02x:07.0, using defaults\n", bus_bcm5785_0);
  95         }
  96
  97                 /* bcm5780 */
  98         for(i = 1; i < 7; i++) {
  99                 dev = dev_find_slot(bus_bcm5780[0], PCI_DEVFN(sbdn2 + i - 1,0));
 100                 if(dev) {
 101                         bus_bcm5780[i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
 102 #if CONFIG_HT_CHAIN_END_UNITID_BASE < CONFIG_HT_CHAIN_UNITID_BASE
 103                         bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
 104                         bus_isa++;
 105 //                      printk(BIOS_DEBUG, "bus_isa=%d\n",bus_isa);
 106 #endif
 107
 108                 }
 109                 else {
 110                         printk(BIOS_DEBUG, "ERROR - could not find PCI %02x:01.0, using defaults\n", bus_bcm5780[i]);
 111                 }
 112         }
 113
 114
 115 /*I/O APICs:    APIC ID Version State           Address*/
 116 #if CONFIG_LOGICAL_CPUS==1
 117         apicid_base = get_apicid_base(3);
 118 #else
 119         apicid_base = CONFIG_MAX_PHYSICAL_CPUS;
 120 #endif
 121         for(i=0;i<3;i++)
 122                 apicid_bcm5785[i] = apicid_base+i;
 123 }