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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
*
* 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 <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <southbridge/intel/bd82x6x/pch.h>
#define GPIO_SPI_WP 68
#define GPIO_REC_MODE 42
#define GPIO_DEV_MODE 17
#define FLAG_SPI_WP 0
#define FLAG_REC_MODE 1
#define FLAG_DEV_MODE 2
#ifndef __PRE_RAM__
#include <boot/coreboot_tables.h>
#define GPIO_COUNT 6
#define ACTIVE_LOW 0
#define ACTIVE_HIGH 1
void fill_lb_gpios(struct lb_gpios *gpios)
{
device_t dev = dev_find_slot(0, PCI_DEVFN(0x1f,0));
u16 gen_pmcon_1 = pci_read_config32(dev, GEN_PMCON_1);
gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio));
gpios->count = GPIO_COUNT;
/* Write Protect: GPIO68 = CHP3_SPI_WP */
gpios->gpios[0].port = GPIO_SPI_WP;
gpios->gpios[0].polarity = ACTIVE_HIGH;
gpios->gpios[0].value =
(pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x1f, 2)),
SATA_SP) >> FLAG_SPI_WP) & 1;
strncpy((char *)gpios->gpios[0].name,"write protect",
GPIO_MAX_NAME_LENGTH);
/* Recovery: GPIO42 = CHP3_REC_MODE# */
gpios->gpios[1].port = GPIO_REC_MODE;
gpios->gpios[1].polarity = ACTIVE_LOW;
gpios->gpios[1].value = !get_recovery_mode_switch();
strncpy((char *)gpios->gpios[1].name,"recovery", GPIO_MAX_NAME_LENGTH);
/* Developer: GPIO17 = KBC3_DVP_MODE */
gpios->gpios[2].port = GPIO_DEV_MODE;
gpios->gpios[2].polarity = ACTIVE_HIGH;
gpios->gpios[2].value = get_developer_mode_switch();
strncpy((char *)gpios->gpios[2].name,"developer", GPIO_MAX_NAME_LENGTH);
/* Hard code the lid switch GPIO to open. */
gpios->gpios[3].port = 100;
gpios->gpios[3].polarity = ACTIVE_HIGH;
gpios->gpios[3].value = 1;
strncpy((char *)gpios->gpios[3].name,"lid", GPIO_MAX_NAME_LENGTH);
/* Power Button */
gpios->gpios[4].port = 101;
gpios->gpios[4].polarity = ACTIVE_LOW;
gpios->gpios[4].value = (gen_pmcon_1 >> 9) & 1;
strncpy((char *)gpios->gpios[4].name,"power", GPIO_MAX_NAME_LENGTH);
/* Did we load the VGA Option ROM? */
gpios->gpios[5].port = -1; /* Indicate that this is a pseudo GPIO */
gpios->gpios[5].polarity = ACTIVE_HIGH;
gpios->gpios[5].value = gfx_get_init_done();
strncpy((char *)gpios->gpios[5].name,"oprom", GPIO_MAX_NAME_LENGTH);
}
#endif
int get_developer_mode_switch(void)
{
device_t dev;
#ifdef __PRE_RAM__
dev = PCI_DEV(0, 0x1f, 2);
#else
dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2));
#endif
return (pci_read_config32(dev, SATA_SP) >> FLAG_DEV_MODE) & 1;
}
int get_recovery_mode_switch(void)
{
device_t dev;
#ifdef __PRE_RAM__
dev = PCI_DEV(0, 0x1f, 2);
#else
dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2));
#endif
return (pci_read_config32(dev, SATA_SP) >> FLAG_REC_MODE) & 1;
}
#ifdef __PRE_RAM__
void save_chromeos_gpios(void)
{
u16 gpio_base = pci_read_config32(PCH_LPC_DEV, GPIO_BASE) & 0xfffe;
u32 gp_lvl3 = inl(gpio_base + GP_LVL3);
u32 gp_lvl2 = inl(gpio_base + GP_LVL2);
u32 gp_lvl = inl(gpio_base + GP_LVL);
u32 flags = 0;
/* Write Protect: GPIO68 = CHP3_SPI_WP, active high */
if (gp_lvl3 & (1 << (GPIO_SPI_WP-64)))
flags |= (1 << FLAG_SPI_WP);
/* Recovery: GPIO42 = CHP3_REC_MODE#, active low */
if (!(gp_lvl2 & (1 << (GPIO_REC_MODE-32))))
flags |= (1 << FLAG_REC_MODE);
/* Developer: GPIO17 = KBC3_DVP_MODE, active high */
if (gp_lvl & (1 << GPIO_DEV_MODE))
flags |= (1 << FLAG_DEV_MODE);
pci_write_config32(PCI_DEV(0, 0x1f, 2), SATA_SP, flags);
}
#endif
|
