bd7426b1a84440f26386734bb0d4a328c7858f4b
[coreboot.git] / src / mainboard / via / vt8454c / romstage.c
1 /*
2  * This file is part of the coreboot project.
3  *
4  * Copyright (C) 2007-2009 coresystems GmbH
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; version 2 of
9  * the License.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
19  * MA 02110-1301 USA
20  */
21
22 #include <stdint.h>
23 #include <device/pci_def.h>
24 #include <device/pci_ids.h>
25 #include <arch/io.h>
26 #include <device/pnp_def.h>
27 #include <arch/romcc_io.h>
28 #include <arch/hlt.h>
29 #include <console/console.h>
30 #include <lib.h>
31 #include "northbridge/via/cx700/raminit.h"
32 #include "cpu/x86/bist.h"
33
34
35 #include "pc80/udelay_io.c"
36 #include "lib/delay.c"
37 #include "northbridge/via/cx700/cx700_early_smbus.c"
38 #include "lib/debug.c"
39
40 #include "northbridge/via/cx700/cx700_early_serial.c"
41 #include "northbridge/via/cx700/raminit.c"
42 #include <spd.h>
43
44 static void enable_mainboard_devices(void)
45 {
46         device_t dev;
47
48         dev = pci_locate_device(PCI_ID(0x1106, 0x8324), 0);
49         if (dev == PCI_DEV_INVALID) {
50                 die("LPC bridge not found!!!\n");
51         }
52         // Disable GP3
53         pci_write_config8(dev, 0x98, 0x00);
54
55         // Disable mc97
56         pci_write_config8(dev, 0x50, 0x80);
57
58         // Disable internal KBC Configuration
59         pci_write_config8(dev, 0x51, 0x2d);
60         pci_write_config8(dev, 0x58, 0x42);
61         pci_write_config8(dev, 0x59, 0x80);
62         pci_write_config8(dev, 0x5b, 0x01);
63
64         // Enable P2P Bridge Header for External PCI BUS.
65         dev = pci_locate_device(PCI_ID(0x1106, 0x324e), 0);
66         if (dev == PCI_DEV_INVALID) {
67                 die("P2P bridge not found!!!\n");
68         }
69         pci_write_config8(dev, 0x4f, 0x41);
70
71         // Switch SATA to non-RAID mode
72         dev = pci_locate_device(PCI_ID(0x1106, 0x0581), 0);
73         if (dev != PCI_DEV_INVALID) {
74                 pci_write_config16(dev, 0xBA, 0x5324);
75         }
76 }
77
78 static void enable_shadow_ram(const struct mem_controller *ctrl)
79 {
80         u8 shadowreg;
81
82         pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0x2a);
83
84         /* 0xf0000-0xfffff - ACPI tables */
85         shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
86         shadowreg |= 0x30;
87         pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
88 }
89
90 void main(unsigned long bist)
91 {
92         /* Set statically so it should work with cx700 as well */
93         static const struct mem_controller cx700[] = {
94                 {
95                         .channel0 = {DIMM0, DIMM1},
96                 },
97         };
98
99         enable_smbus();
100
101         enable_cx700_serial();
102         uart_init();
103         console_init();
104
105         /* Halt if there was a built in self test failure */
106         report_bist_failure(bist);
107
108         enable_mainboard_devices();
109
110         /* Allows access to all northbridge devices */
111         pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
112
113         sdram_set_registers(cx700);
114         enable_shadow_ram(cx700);
115         sdram_enable(cx700);
116 }
117