src/mainboard/msi/ms9185/get_bus_conf.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2006 AMD
 * Written by Yinghai Lu <yinghailu@gmail.com> for AMD.
 *
 * Copyright (C) 2006 MSI
 * Written by bxshi <bingxunshi@gmail.com> for MSI.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */
#include <console/console.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <string.h>
#include <stdint.h>
#if CONFIG_LOGICAL_CPUS==1
#include <cpu/amd/dualcore.h>
#endif

#include <cpu/amd/amdk8_sysconf.h>

#include "mb_sysconf.h"

// Global variables for MB layouts and these will be shared by irqtable mptable and acpi_tables
struct mb_sysconf_t mb_sysconf;

static unsigned pci1234x[] =
{        //Here you only need to set value in pci1234 for HT-IO that could be installed or not
         //You may need to preset pci1234 for HTIO board, please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
        0x0000ff0,
        0x0000ff0,
//        0x0000ff0,
//        0x0000ff0,
//        0x0000ff0,
//        0x0000ff0,
//        0x0000ff0,
//        0x0000ff0
};
static unsigned hcdnx[] =
{ //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
        0x20202020,
        0x20202020,
//        0x20202020,
//        0x20202020,
//        0x20202020,
//        0x20202020,
//        0x20202020,
//        0x20202020,
};

extern void get_sblk_pci1234(void);

static unsigned get_bus_conf_done = 0;

void get_bus_conf(void)
{

       unsigned apicid_base;

        device_t dev;
        int i;
       struct mb_sysconf_t *m;

        if(get_bus_conf_done==1) return; //do it only once

        get_bus_conf_done = 1;

       sysconf.mb = &mb_sysconf;

       m = sysconf.mb;

        sysconf.hc_possible_num = sizeof(pci1234x)/sizeof(pci1234x[0]);

        for(i=0;i<sysconf.hc_possible_num; i++) {
                sysconf.pci1234[i] = pci1234x[i];
                sysconf.hcdn[i] = hcdnx[i];
        }

        get_sblk_pci1234();

        sysconf.sbdn = (sysconf.hcdn[0] >> 8) & 0xff;
        m->sbdn2 = sysconf.hcdn[0] & 0xff; // bcm5780

       m->bus_bcm5785_0 = (sysconf.pci1234[0] >> 16) & 0xff;
       m->bus_bcm5780[0] = m->bus_bcm5785_0;

                /* bcm5785 */
        dev = dev_find_slot(m->bus_bcm5785_0, PCI_DEVFN(sysconf.sbdn,0));
        if (dev) {
                m->bus_bcm5785_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
               dev = dev_find_slot(m->bus_bcm5785_1, PCI_DEVFN(0xd,0));
               if(dev) {
                       m->bus_bcm5785_1_1 = pci_read_config8(dev, PCI_SECONDARY_BUS);
#if HT_CHAIN_END_UNITID_BASE >= HT_CHAIN_UNITID_BASE
                       m->bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
                       m->bus_isa++;
                       printk_debug("bus_isa=%d\n",m->bus_isa);
#endif
               }
        }
       else {
                printk_debug("ERROR - could not find PCI %02x:%02x.0, using defaults\n", m->bus_bcm5785_0, sysconf.sbdn);
        }

               /* bcm5780 */
       for(i = 1; i < 7; i++) {
               dev = dev_find_slot(m->bus_bcm5780[0], PCI_DEVFN(m->sbdn2 + i - 1,0));
               if(dev) {
                       m->bus_bcm5780[i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
                        m->bus_isa    = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
                        m->bus_isa++;
                      printk_debug("bus_isa=%d\n",m->bus_isa);
#endif

               }
               else {
                       printk_debug("ERROR - could not find PCI %02x:%02x.0, using defaults\n", m->bus_bcm5780[0], m->sbdn2+i-1);
               }
       }


/*I/O APICs:   APIC ID Version State           Address*/
#if CONFIG_LOGICAL_CPUS==1
       apicid_base = get_apicid_base(3);
#else
       apicid_base = CONFIG_MAX_PHYSICAL_CPUS;
#endif
       for(i=0;i<3;i++)
               m->apicid_bcm5785[i] = apicid_base+i;
}