Some more DIMM0 related cleanups and deduplication.
[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
43 static void enable_mainboard_devices(void)
44 {
45         device_t dev;
46
47         dev = pci_locate_device(PCI_ID(0x1106, 0x8324), 0);
48         if (dev == PCI_DEV_INVALID) {
49                 die("LPC bridge not found!!!\n");
50         }
51         // Disable GP3
52         pci_write_config8(dev, 0x98, 0x00);
53
54         // Disable mc97
55         pci_write_config8(dev, 0x50, 0x80);
56
57         // Disable internal KBC Configuration
58         pci_write_config8(dev, 0x51, 0x2d);
59         pci_write_config8(dev, 0x58, 0x42);
60         pci_write_config8(dev, 0x59, 0x80);
61         pci_write_config8(dev, 0x5b, 0x01);
62
63         // Enable P2P Bridge Header for External PCI BUS.
64         dev = pci_locate_device(PCI_ID(0x1106, 0x324e), 0);
65         if (dev == PCI_DEV_INVALID) {
66                 die("P2P bridge not found!!!\n");
67         }
68         pci_write_config8(dev, 0x4f, 0x41);
69
70         // Switch SATA to non-RAID mode
71         dev = pci_locate_device(PCI_ID(0x1106, 0x0581), 0);
72         if (dev != PCI_DEV_INVALID) {
73                 pci_write_config16(dev, 0xBA, 0x5324);
74         }
75 }
76
77 static void enable_shadow_ram(const struct mem_controller *ctrl)
78 {
79         u8 shadowreg;
80
81         pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0x2a);
82
83         /* 0xf0000-0xfffff - ACPI tables */
84         shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
85         shadowreg |= 0x30;
86         pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
87 }
88
89 void main(unsigned long bist)
90 {
91         /* Set statically so it should work with cx700 as well */
92         static const struct mem_controller cx700[] = {
93                 {
94                         .channel0 = {DIMM0, DIMM1},
95                 },
96         };
97
98         enable_smbus();
99
100         enable_cx700_serial();
101         uart_init();
102         console_init();
103
104         /* Halt if there was a built in self test failure */
105         report_bist_failure(bist);
106
107         enable_mainboard_devices();
108
109         /* Allows access to all northbridge devices */
110         pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
111
112         sdram_set_registers(cx700);
113         enable_shadow_ram(cx700);
114         sdram_enable(cx700);
115 }
116