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
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <console/console.h>
#include <inttypes.h>
#include <baseboard/variants.h>
#include <ec/google/chromeec/ec.h>
/* Global definitions for FW_CONFIG values */
enum {
/* Daughterboard index for attributes. */
FW_CONFIG_MASK_DB_INDEX = 0xf,
FW_CONFIG_DB_INDEX_SHIFT = 0,
/* Mainboard USB index for attributes. */
FW_CONFIG_MASK_MB_USB_INDEX = 0xf,
FW_CONFIG_MB_USB_INDEX_SHIFT = 4,
/* Lid accelerometer properties. */
FW_CONFIG_MASK_LID_ACCEL = 0x7,
FW_CONFIG_LID_ACCEL_SHIFT = 8,
/* Base gyro sensor properties. */
FW_CONFIG_MASK_BASE_GYRO = 0x7,
FW_CONFIG_BASE_GYRO_SHIFT = 11,
/* Keyboard backlight presence */
FW_CONFIG_MASK_KEYB_BL = 0x1,
FW_CONFIG_KEYB_BL_SHIFT = 14,
/* Tablet mode supported through lid angle */
FW_CONFIG_MASK_LID_ANGLE_TABLET_MODE = 0x1,
FW_CONFIG_LID_ANGLE_TABLET_MODE_SHIFT = 15,
/* Stylus presence */
FW_CONFIG_MASK_STYLUS = 0x1,
FW_CONFIG_STYLUS_SHIFT = 16,
/* Fingerprint sensor presence */
FW_CONFIG_MASK_FP = 0x1,
FW_CONFIG_SHIFT_FP = 17,
/* NVME presence */
FW_CONFIG_MASK_NVME = 0x1,
FW_CONFIG_SHIFT_NVME = 18,
/* EMMC presence */
FW_CONFIG_MASK_EMMC = 0x1,
FW_CONFIG_SHIFT_EMMC = 19,
/* SD controller type */
FW_CONFIG_MASK_SD_CTRLR = 0x7,
FW_CONFIG_SHIFT_SD_CTRLR = 20,
/* SPI speed value */
FW_CONFIG_MASK_SPI_SPEED = 0xf,
FW_CONFIG_SHIFT_SPI_SPEED = 23,
/* Fan information */
FW_CONFIG_MASK_FAN = 0x3,
FW_CONFIG_SHIFT_FAN = 27,
};
int variant_fw_config_valid(void)
{
static uint32_t board_version;
const uint32_t bv_valid = CONFIG_VARIANT_BOARD_VER_FW_CONFIG_VALID;
if (!CONFIG(VARIANT_HAS_FW_CONFIG))
return 0;
/* Fast path for non-zero board version. */
if (board_version >= bv_valid)
return 1;
if (google_chromeec_cbi_get_board_version(&board_version)) {
printk(BIOS_ERR, "Unable to obtain board version for FW_CONFIG\n");
return 0;
}
if (board_version >= bv_valid)
return 1;
return 0;
}
static int get_fw_config(uint32_t *val)
{
static uint32_t known_value;
if (!variant_fw_config_valid())
return -1;
if (known_value) {
*val = known_value;
return 0;
}
if (google_chromeec_cbi_get_fw_config(&known_value)) {
printk(BIOS_ERR, "FW_CONFIG not set in CBI\n");
return -1;
}
*val = known_value;
return 0;
}
static unsigned int extract_field(uint32_t mask, int shift)
{
uint32_t fw_config;
/* On errors nothing is assumed to be set. */
if (get_fw_config(&fw_config))
return 0;
return (fw_config >> shift) & mask;
}
int variant_has_emmc(void)
{
return !!extract_field(FW_CONFIG_MASK_EMMC, FW_CONFIG_SHIFT_EMMC);
}
int variant_has_nvme(void)
{
return !!extract_field(FW_CONFIG_MASK_NVME, FW_CONFIG_SHIFT_NVME);
}
|
