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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <types.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <option.h>
#include <arch/interrupt.h>
#include <southbridge/intel/bd82x6x/pch.h>
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 0;
printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
__func__, X86_AX, X86_BX, X86_CX, X86_DX);
switch (X86_EAX & 0xffff) {
case 0x5f34:
/*
* Set Panel Fitting Hook:
* bit 2 = Graphics Stretching
* bit 1 = Text Stretching
* bit 0 = Centering (do not set with bit1 or bit2)
* 0 = video BIOS default
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x005f;
X86_ECX &= 0xffffff00;
X86_ECX |= 0x00; /* Use video BIOS default */
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV (eDP)
* bit 2 = EFP
* bit 3 = LFP
* bit 4 = CRT2
* bit 5 = TV2 (eDP)
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x005f;
X86_ECX &= 0xffff0000;
X86_ECX |= 0x0000; /* Use video BIOS default */
res = 1;
break;
case 0x5f51:
/*
* Hook to select active LFP configuration:
* 00h = No LVDS, VBIOS does not enable LVDS
* 01h = Int-LVDS, LFP driven by integrated LVDS decoder
* 02h = SDVO-LVDS, LFP driven by SDVO decoder
* 03h = eDP, LFP Driven by Int-DisplayPort encoder
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x005f;
X86_ECX &= 0xffff0000;
X86_ECX |= 0x0000; /* TODO: Make this configurable in NVRAM? */
res = 1;
break;
case 0x5f40:
/*
* Boot Panel Type Hook:
* BL(in): 00h = LFP, 01h = LFP2
* CL(out): panel type id in table: 1..16
*/
if (0 == (X86_EBX & 0xff)) {
X86_EAX &= 0xffff0000;
X86_EAX |= 0x015f;
res = 1;
} else if (1 == (X86_EBX & 0xff)) {
X86_EAX &= 0xffff0000;
X86_EAX |= 0x015f;
res = 1;
} else {
printk(BIOS_DEBUG,
"Unknown panel index %u "
"in INT15 function %04x!\n",
X86_EBX & 0xff, X86_EAX & 0xffff);
}
break;
case 0x5f52:
/*
* Panel Color Depth:
* 00h = 18 bit
* 01h = 24 bit
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x005f;
X86_ECX &= 0xffff0000;
X86_ECX |= 0x0001;
res = 1;
break;
case 0x5f14:
if ((X86_EBX & 0xffff) == 0x78f) {
/*
* Get Miscellaneous Status Hook:
* bit 2: AC power active?
* bit 1: lid closed?
* bit 0: docked?
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x015f;
res = 1;
} else {
printk(BIOS_DEBUG,
"Unknown BX 0x%04x in INT15 function %04x!\n",
X86_EBX & 0xffff, X86_EAX & 0xffff);
}
break;
case 0x5f49:
/*
* Get Inverter Type and Polarity:
* EBX: backlight control brightness: 0..255
* ECX:
* 0 = Enable PWM inverted, 2 = Enable PWM
* 1 = Enable I2C inverted, 3 = Enable I2C
*/
X86_EAX &= 0xffff0000;
X86_EAX |= 0x015f;
res = 1;
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
X86_EAX & 0xffff);
break;
}
return res;
}
#endif
/* mainboard_enable is executed as first thing after */
/* enumerate_buses(). */
static void mainboard_enable(struct device *dev)
{
#if CONFIG(PCI_OPTION_ROM_RUN_YABEL) || \
CONFIG(PCI_OPTION_ROM_RUN_REALMODE)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
unsigned int disable = 0;
if ((get_option(&disable, "ethernet1") == CB_SUCCESS) && disable) {
struct device *nic = pcidev_on_root(0x1c, 2);
if (nic) {
printk(BIOS_DEBUG, "DISABLE FIRST NIC!\n");
nic->enabled = 0;
}
}
disable = 0;
if ((get_option(&disable, "ethernet2") == CB_SUCCESS) && disable) {
struct device *nic = pcidev_on_root(0x1c, 3);
if (nic) {
printk(BIOS_DEBUG, "DISABLE SECOND NIC!\n");
nic->enabled = 0;
}
}
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
|
