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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <arch/acpi.h>
#include <baseboard/variants.h>
#include <boardid.h>
#include <bootstate.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <ec/google/chromeec/ec.h>
#include <ec/ec.h>
#include <intelblocks/xhci.h>
#include <nhlt.h>
#include <smbios.h>
#include <soc/cpu.h>
#include <soc/gpio.h>
#include <soc/nhlt.h>
#include <soc/pci_devs.h>
#include <stdint.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <variant/ec.h>
#include <variant/gpio.h>
static bool is_cnvi_held_in_reset(void)
{
struct device *dev = pcidev_path_on_root(PCH_DEVFN_CNVI);
uint32_t reg = pci_read_config32(dev, PCI_VENDOR_ID);
/*
* If vendor/device ID for CNVi reads as 0xffffffff, then it is safe to
* assume that it is being held in reset.
*/
if (reg == 0xffffffff)
return true;
return false;
}
static void disable_wifi_wake(void)
{
static const struct pad_config wifi_wake_gpio[] = {
PAD_NC(GPIO_119, UP_20K),
};
gpio_configure_pads(wifi_wake_gpio, ARRAY_SIZE(wifi_wake_gpio));
}
static void mainboard_init(void *chip_info)
{
int boardid;
const struct pad_config *base_pads;
const struct pad_config *override_pads;
size_t base_num, override_num;
boardid = board_id();
printk(BIOS_INFO, "Board ID: %d\n", boardid);
base_pads = variant_base_gpio_table(&base_num);
override_pads = variant_override_gpio_table(&override_num);
gpio_configure_pads_with_override(base_pads, base_num,
override_pads, override_num);
if (!is_cnvi_held_in_reset())
disable_wifi_wake();
mainboard_ec_init();
}
static unsigned long mainboard_write_acpi_tables(
struct device *device, unsigned long current, acpi_rsdp_t *rsdp)
{
uintptr_t start_addr;
uintptr_t end_addr;
struct nhlt *nhlt;
start_addr = current;
nhlt = nhlt_init();
if (nhlt == NULL)
return start_addr;
variant_nhlt_init(nhlt);
end_addr = nhlt_soc_serialize(nhlt, start_addr);
if (end_addr != start_addr)
acpi_add_table(rsdp, (void *)start_addr);
return end_addr;
}
static void mainboard_enable(struct device *dev)
{
dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
}
struct chip_operations mainboard_ops = {
.init = mainboard_init,
.enable_dev = mainboard_enable,
};
void __weak variant_update_devtree(struct device *dev)
{
/* Place holder for common updates. */
}
/*
* Check if CNVi PCI device is released from reset. If yes, then the system is
* booting with CNVi module. In this case, the PCIe device for WiFi needs to
* be disabled. If CNVi device is held in reset, then disable it.
*/
static void wifi_device_update(void)
{
struct device *dev;
unsigned int devfn;
if (is_cnvi_held_in_reset())
devfn = PCH_DEVFN_CNVI;
else
devfn = PCH_DEVFN_PCIE1;
dev = pcidev_path_on_root(devfn);
if (dev)
dev->enabled = 0;
}
void mainboard_devtree_update(struct device *dev)
{
/* Apply common devtree updates. */
wifi_device_update();
/* Defer to variant for board-specific updates. */
variant_update_devtree(dev);
}
bool __weak variant_ext_usb_status(unsigned int port_type, unsigned int port_id)
{
/* All externally visible USB ports are present */
return true;
}
static void disable_unused_devices(void *unused)
{
usb_xhci_disable_unused(variant_ext_usb_status);
}
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, disable_unused_devices, NULL);
|
