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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <types.h>
#include <device/device.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <acpi/acpi.h>
#include <arch/interrupt.h>
#include <smbios.h>
#include "ec.h"
#include <variant/onboard.h>
#include <soc/gpio.h>
#include <bootstate.h>
#include <vendorcode/google/chromeos/chromeos.h>
void mainboard_suspend_resume(void)
{
}
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 1;
printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
__func__, X86_AX, X86_BX, X86_CX, X86_DX);
switch (X86_AX) {
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_AX = 0x005f;
X86_CX = 0x0001;
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV
* bit 2 = EFP (HDMI)
* bit 3 = LFP (eDP)*
* bit 4 = CRT2
* bit 5 = TV2
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_AX = 0x005f;
X86_CX = 0x0008;
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 = SVDO-LVDS, LFP driven by SVDO decoder
* 03h = eDP, LFP Driven by Int-DisplayPort encoder
*/
X86_AX = 0x005f;
X86_CX = 0x0003;
res = 1;
break;
case 0x5f70:
switch ((X86_CX >> 8) & 0xff) {
case 0:
/* Get Mux */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
case 1:
/* Set Mux */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
case 2:
/* Get SG/Non-SG mode */
X86_AX = 0x005f;
X86_CX = 0x0000;
res = 1;
break;
default:
/* Interrupt was not handled */
printk(BIOS_DEBUG,
"Unknown INT15 5f70 function: 0x%02x\n",
((X86_CX >> 8) & 0xff));
break;
}
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
break;
}
return res;
}
#endif
static void mainboard_init(struct device *dev)
{
mainboard_ec_init();
#if CONFIG(BOARD_GOOGLE_NINJA) || CONFIG(BOARD_GOOGLE_SUMO)
lan_init();
#endif
}
static int mainboard_smbios_data(struct device *dev, int *handle,
unsigned long *current)
{
int len = 0;
#ifdef BOARD_TRACKPAD_NAME
len += smbios_write_type41(
current, handle,
BOARD_TRACKPAD_NAME, /* name */
BOARD_TRACKPAD_IRQ, /* instance */
BOARD_TRACKPAD_I2C_BUS, /* segment */
BOARD_TRACKPAD_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
#endif
#ifdef BOARD_TOUCHSCREEN_NAME
len += smbios_write_type41(
current, handle,
BOARD_TOUCHSCREEN_NAME, /* name */
BOARD_TOUCHSCREEN_IRQ, /* instance */
BOARD_TOUCHSCREEN_I2C_BUS, /* segment */
BOARD_TOUCHSCREEN_I2C_ADDR, /* bus */
0, /* device */
0, /* function */
SMBIOS_DEVICE_TYPE_OTHER); /* device type */
#endif
return len;
}
// mainboard_enable is executed as first thing after
// enumerate_buses().
static void mainboard_enable(struct device *dev)
{
dev->ops->init = mainboard_init;
dev->ops->get_smbios_data = mainboard_smbios_data;
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
#if CONFIG(VGA_ROM_RUN)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
}
struct chip_operations mainboard_ops = {
.enable_dev = mainboard_enable,
};
static void edp_vdden_cb(void *unused)
{
ncore_select_func(SOC_DDI1_VDDEN_PAD, PAD_FUNC2);
}
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, edp_vdden_cb, NULL);
|
