1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
*
* 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; version 2 of the License.
*
* 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 <bootmode.h>
#include <delay.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <pc80/mc146818rtc.h>
#include "i945.h"
#define GDRST 0xc0
static void gma_func0_init(struct device *dev)
{
u32 reg32;
/* Unconditionally reset graphics */
pci_write_config8(dev, GDRST, 1);
udelay(50);
pci_write_config8(dev, GDRST, 0);
/* wait for device to finish */
while (pci_read_config8(dev, GDRST) & 1) { };
/* IGD needs to be Bus Master */
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER);
#if !CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT
/* PCI Init, will run VBIOS */
pci_dev_init(dev);
#endif
#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT
/* This should probably run before post VBIOS init. */
printk(BIOS_SPEW, "Initializing VGA without OPROM.\n");
u32 iobase, mmiobase, graphics_base;
iobase = dev->resource_list[1].base;
mmiobase = dev->resource_list[0].base;
graphics_base = dev->resource_list[2].base + 0x20000;
printk(BIOS_SPEW, "GMADR=0x%08x GTTADR=0x%08x\n",
pci_read_config32(dev, GMADR),
pci_read_config32(dev, GTTADR)
);
int i915lightup(u32 physbase, u32 iobase, u32 mmiobase, u32 gfx);
u32 uma_memory_base = pci_read_config32(dev, BSM) & ~((1 << 20) - 1);
int lightup_ok = i915lightup(uma_memory_base, iobase, mmiobase, graphics_base);
if (lightup_ok)
gfx_set_init_done(1);
#endif
}
/* This doesn't reclaim stolen UMA memory, but IGD could still
be reenabled later. */
static void gma_func0_disable(struct device *dev)
{
struct device *dev_host = dev_find_slot(0, PCI_DEVFN(0x0, 0));
pci_write_config16(dev, GCFC, 0xa00);
pci_write_config16(dev_host, GGC, (1 << 1));
unsigned int reg32 = pci_read_config32(dev_host, DEVEN);
reg32 &= ~(DEVEN_D2F0 | DEVEN_D2F1);
pci_write_config32(dev_host, DEVEN, reg32);
dev->enabled = 0;
}
static void gma_func1_init(struct device *dev)
{
u32 reg32;
u8 val;
/* IGD needs to be Bus Master, also enable IO accesss */
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, reg32 |
PCI_COMMAND_MASTER | PCI_COMMAND_IO);
if (get_option(&val, "tft_brightness") == CB_SUCCESS)
pci_write_config8(dev, 0xf4, val);
else
pci_write_config8(dev, 0xf4, 0xff);
}
static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
if (!vendor || !device) {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
pci_read_config32(dev, PCI_VENDOR_ID));
} else {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
}
static struct pci_operations gma_pci_ops = {
.set_subsystem = gma_set_subsystem,
};
static struct device_operations gma_func0_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = gma_func0_init,
.scan_bus = 0,
.enable = 0,
.disable = gma_func0_disable,
.ops_pci = &gma_pci_ops,
};
static struct device_operations gma_func1_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = gma_func1_init,
.scan_bus = 0,
.enable = 0,
.ops_pci = &gma_pci_ops,
};
static const struct pci_driver i945_gma_func0_driver __pci_driver = {
.ops = &gma_func0_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x27a2,
};
static const struct pci_driver i945_gma_func1_driver __pci_driver = {
.ops = &gma_func1_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x27a6,
};
|
