Since some people disapprove of white space cleanups mixed in regular commits
[coreboot.git] / src / mainboard / gigabyte / m57sli / get_bus_conf.c
1 /*
2  * This file is part of the coreboot project.
3  *
4  * Copyright (C) 2007 AMD
5  * Written by Yinghai Lu <yinghailu@amd.com> for AMD.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
20  */
21
22 #include <console/console.h>
23 #include <device/pci.h>
24 #include <device/pci_ids.h>
25 #include <string.h>
26 #include <stdint.h>
27 #if CONFIG_LOGICAL_CPUS==1
28 #include <cpu/amd/multicore.h>
29 #endif
30
31 #include <cpu/amd/amdk8_sysconf.h>
32 #include <stdlib.h>
33
34
35 // Global variables for MB layouts and these will be shared by irqtable mptable and acpi_tables
36 //busnum is default
37         unsigned char bus_isa;
38         unsigned char bus_mcp55[8]; //1
39         unsigned apicid_mcp55;
40
41
42 unsigned pci1234x[] =
43 {        //Here you only need to set value in pci1234 for HT-IO that could be installed or not
44          //You may need to preset pci1234 for HTIO board, please refer to src/northbridge/amd/amdk8/get_sblk_pci1234.c for detail
45         0x0000ff0,
46 //        0x0000ff0,
47 //        0x0000ff0,
48 //        0x0000ff0,
49 //        0x0000ff0,
50 //        0x0000ff0,
51 //        0x0000ff0,
52 //        0x0000ff0
53 };
54 unsigned hcdnx[] =
55 { //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
56         0x20202020,
57 //      0x20202020,
58 //        0x20202020,
59 //        0x20202020,
60 //        0x20202020,
61 //        0x20202020,
62 //        0x20202020,
63 //        0x20202020,
64 };
65 unsigned bus_type[256];
66
67
68
69 static unsigned get_bus_conf_done = 0;
70
71 void get_bus_conf(void)
72 {
73
74         unsigned apicid_base;
75         unsigned sbdn;
76
77         device_t dev;
78         int i, j;
79
80         if(get_bus_conf_done==1) return; //do it only once
81
82         get_bus_conf_done = 1;
83
84         sysconf.hc_possible_num = ARRAY_SIZE(pci1234x);
85         for(i=0;i<sysconf.hc_possible_num; i++) {
86                 sysconf.pci1234[i] = pci1234x[i];
87                 sysconf.hcdn[i] = hcdnx[i];
88         }
89
90         get_sblk_pci1234();
91
92         sysconf.sbdn = (sysconf.hcdn[0] & 0xff); // first byte of first chain
93         sbdn = sysconf.sbdn;
94
95         for(i=0; i<8; i++) {
96                 bus_mcp55[i] = 0;
97         }
98
99         for(i=0;i<256; i++) {
100                 bus_type[i] = 0;
101         }
102
103         bus_type[0] = 1; //pci
104
105         bus_mcp55[0] = (sysconf.pci1234[0] >> 16) & 0xff;
106
107         bus_type[bus_mcp55[0]] = 1;
108
109                 /* MCP55 */
110                 dev = dev_find_slot(bus_mcp55[0], PCI_DEVFN(sbdn + 0x06,0));
111                 if (dev) {
112                         bus_mcp55[1] = pci_read_config8(dev, PCI_SECONDARY_BUS);
113                         bus_mcp55[2] = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
114                         bus_mcp55[2]++;
115                         for(j=bus_mcp55[1];j<bus_mcp55[2]; j++) bus_type[j] = 1;
116                 }
117                 else {
118                         printk(BIOS_DEBUG, "ERROR - could not find PCI 1:%02x.0, using defaults\n", sbdn + 0x06);
119
120                         bus_mcp55[1] = 2;
121                         bus_mcp55[2] = 3;
122                 }
123
124                 for(i=2; i<8;i++) {
125                         dev = dev_find_slot(bus_mcp55[0], PCI_DEVFN(sbdn + 0x0a + i - 2 , 0));
126                         if (dev) {
127                                 bus_mcp55[i] = pci_read_config8(dev, PCI_SECONDARY_BUS);
128                                 bus_isa = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
129                                 bus_isa++;
130                                 for(j=bus_mcp55[i];j<bus_isa; j++) bus_type[j] = 1;
131                         }
132                         else {
133                                 printk(BIOS_DEBUG, "ERROR - could not find PCI %02x:%02x.0, using defaults\n", bus_mcp55[0], sbdn + 0x0a + i - 2 );
134                                 bus_isa = bus_mcp55[i-1]+1;
135                         }
136                 }
137
138
139 /*I/O APICs:    APIC ID Version State           Address*/
140 #if CONFIG_LOGICAL_CPUS==1
141         apicid_base = get_apicid_base(1);
142 #else
143         apicid_base = CONFIG_MAX_PHYSICAL_CPUS;
144 #endif
145         apicid_mcp55 = apicid_base+0;
146
147 }