1 What: /sys/bus/platform/devices/GGL0 1 What: /sys/bus/platform/devices/GGL0001:*/BINF.2
2 /sys/bus/platform/devices/GOOG 2 /sys/bus/platform/devices/GOOG0016:*/BINF.2
3 Date: May 2022 3 Date: May 2022
4 KernelVersion: 5.19 4 KernelVersion: 5.19
5 Description: 5 Description:
6 Returns active EC firmware of 6 Returns active EC firmware of current boot (boolean).
7 7
8 == =========================== 8 == ===============================
9 0 Read only (recovery) firmwa 9 0 Read only (recovery) firmware.
10 1 Rewritable firmware. 10 1 Rewritable firmware.
11 == =========================== 11 == ===============================
12 12
13 What: /sys/bus/platform/devices/GGL0 13 What: /sys/bus/platform/devices/GGL0001:*/BINF.3
14 /sys/bus/platform/devices/GOOG 14 /sys/bus/platform/devices/GOOG0016:*/BINF.3
15 Date: May 2022 15 Date: May 2022
16 KernelVersion: 5.19 16 KernelVersion: 5.19
17 Description: 17 Description:
18 Returns main firmware type for 18 Returns main firmware type for current boot (integer).
19 19
20 == =========================== 20 == =====================================
21 0 Recovery. 21 0 Recovery.
22 1 Normal. 22 1 Normal.
23 2 Developer. 23 2 Developer.
24 3 Netboot (factory installati 24 3 Netboot (factory installation only).
25 == =========================== 25 == =====================================
26 26
27 What: /sys/bus/platform/devices/GGL0 27 What: /sys/bus/platform/devices/GGL0001:*/CHSW
28 /sys/bus/platform/devices/GOOG 28 /sys/bus/platform/devices/GOOG0016:*/CHSW
29 Date: May 2022 29 Date: May 2022
30 KernelVersion: 5.19 30 KernelVersion: 5.19
31 Description: 31 Description:
32 Returns switch position for Ch 32 Returns switch position for Chrome OS specific hardware
33 switches when the firmware is 33 switches when the firmware is booted (integer).
34 34
35 ==== ========================= 35 ==== ===========================================
36 0 No changes. 36 0 No changes.
37 2 Recovery button was press 37 2 Recovery button was pressed.
38 4 Recovery button was press 38 4 Recovery button was pressed (EC firmware).
39 32 Developer switch was enab 39 32 Developer switch was enabled.
40 512 Firmware write protection 40 512 Firmware write protection was disabled.
41 ==== ========================= 41 ==== ===========================================
42 42
43 What: /sys/bus/platform/devices/GGL0 43 What: /sys/bus/platform/devices/GGL0001:*/FMAP
44 /sys/bus/platform/devices/GOOG 44 /sys/bus/platform/devices/GOOG0016:*/FMAP
45 Date: May 2022 45 Date: May 2022
46 KernelVersion: 5.19 46 KernelVersion: 5.19
47 Description: 47 Description:
48 Returns physical memory addres 48 Returns physical memory address of the start of the main
49 processor firmware flashmap. 49 processor firmware flashmap.
50 50
51 What: /sys/bus/platform/devices/GGL0 51 What: /sys/bus/platform/devices/GGL0001:*/FRID
52 /sys/bus/platform/devices/GOOG 52 /sys/bus/platform/devices/GOOG0016:*/FRID
53 Date: May 2022 53 Date: May 2022
54 KernelVersion: 5.19 54 KernelVersion: 5.19
55 Description: 55 Description:
56 Returns firmware version for t 56 Returns firmware version for the read-only portion of the
57 main processor firmware. 57 main processor firmware.
58 58
59 What: /sys/bus/platform/devices/GGL0 59 What: /sys/bus/platform/devices/GGL0001:*/FWID
60 /sys/bus/platform/devices/GOOG 60 /sys/bus/platform/devices/GOOG0016:*/FWID
61 Date: May 2022 61 Date: May 2022
62 KernelVersion: 5.19 62 KernelVersion: 5.19
63 Description: 63 Description:
64 Returns firmware version for t 64 Returns firmware version for the rewritable portion of the
65 main processor firmware. 65 main processor firmware.
66 66
67 What: /sys/bus/platform/devices/GGL0 67 What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.0
68 /sys/bus/platform/devices/GOOG 68 /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.0
69 Date: May 2022 69 Date: May 2022
70 KernelVersion: 5.19 70 KernelVersion: 5.19
71 Description: 71 Description:
72 Returns type of the GPIO signa 72 Returns type of the GPIO signal for the Chrome OS specific
73 GPIO assignments (integer). 73 GPIO assignments (integer).
74 74
75 =========== ================== 75 =========== ==================================
76 1 Recovery button. 76 1 Recovery button.
77 2 Developer mode swi 77 2 Developer mode switch.
78 3 Firmware write pro 78 3 Firmware write protection switch.
79 256 to 511 Debug header GPIO 79 256 to 511 Debug header GPIO 0 to GPIO 255.
80 =========== ================== 80 =========== ==================================
81 81
82 What: /sys/bus/platform/devices/GGL0 82 What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1
83 /sys/bus/platform/devices/GOOG 83 /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.1
84 Date: May 2022 84 Date: May 2022
85 KernelVersion: 5.19 85 KernelVersion: 5.19
86 Description: 86 Description:
87 Returns signal attributes of t 87 Returns signal attributes of the GPIO signal (integer bitfield).
88 88
89 == ======================= 89 == =======================
90 0 Signal is active low. 90 0 Signal is active low.
91 1 Signal is active high. 91 1 Signal is active high.
92 == ======================= 92 == =======================
93 93
94 What: /sys/bus/platform/devices/GGL0 94 What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.2
95 /sys/bus/platform/devices/GOOG 95 /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.2
96 Date: May 2022 96 Date: May 2022
97 KernelVersion: 5.19 97 KernelVersion: 5.19
98 Description: 98 Description:
99 Returns the GPIO number on the 99 Returns the GPIO number on the specified GPIO
100 controller. 100 controller.
101 101
102 What: /sys/bus/platform/devices/GGL0 102 What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.3
103 /sys/bus/platform/devices/GOOG 103 /sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.3
104 Date: May 2022 104 Date: May 2022
105 KernelVersion: 5.19 105 KernelVersion: 5.19
106 Description: 106 Description:
107 Returns name of the GPIO contr 107 Returns name of the GPIO controller.
108 108
109 What: /sys/bus/platform/devices/GGL0 109 What: /sys/bus/platform/devices/GGL0001:*/HWID
110 /sys/bus/platform/devices/GOOG 110 /sys/bus/platform/devices/GOOG0016:*/HWID
111 Date: May 2022 111 Date: May 2022
112 KernelVersion: 5.19 112 KernelVersion: 5.19
113 Description: 113 Description:
114 Returns hardware ID for the Ch 114 Returns hardware ID for the Chromebook.
115 115
116 What: /sys/bus/platform/devices/GGL0 116 What: /sys/bus/platform/devices/GGL0001:*/MECK
117 /sys/bus/platform/devices/GOOG 117 /sys/bus/platform/devices/GOOG0016:*/MECK
118 Date: May 2022 118 Date: May 2022
119 KernelVersion: 5.19 119 KernelVersion: 5.19
120 Description: 120 Description:
121 Returns the SHA-1 or SHA-256 h 121 Returns the SHA-1 or SHA-256 hash that is read out of the
122 Management Engine extended reg 122 Management Engine extended registers during boot. The hash
123 is exported via ACPI so the OS 123 is exported via ACPI so the OS can verify that the Management
124 Engine firmware has not change 124 Engine firmware has not changed. If Management Engine is not
125 present, or if the firmware wa 125 present, or if the firmware was unable to read the extended registers, this buffer size can be zero.
126 126
127 What: /sys/bus/platform/devices/GGL0 127 What: /sys/bus/platform/devices/GGL0001:*/VBNV.0
128 /sys/bus/platform/devices/GOOG 128 /sys/bus/platform/devices/GOOG0016:*/VBNV.0
129 Date: May 2022 129 Date: May 2022
130 KernelVersion: 5.19 130 KernelVersion: 5.19
131 Description: 131 Description:
132 Returns offset in CMOS bank 0 132 Returns offset in CMOS bank 0 of the verified boot non-volatile
133 storage block, counting from t 133 storage block, counting from the first writable CMOS byte
134 (that is, 'offset = 0' is the 134 (that is, 'offset = 0' is the byte following the 14 bytes of
135 clock data). 135 clock data).
136 136
137 What: /sys/bus/platform/devices/GGL0 137 What: /sys/bus/platform/devices/GGL0001:*/VBNV.1
138 /sys/bus/platform/devices/GOOG 138 /sys/bus/platform/devices/GOOG0016:*/VBNV.1
139 Date: May 2022 139 Date: May 2022
140 KernelVersion: 5.19 140 KernelVersion: 5.19
141 Description: 141 Description:
142 Return the size in bytes of th 142 Return the size in bytes of the verified boot non-volatile
143 storage block. 143 storage block.
144 144
145 What: /sys/bus/platform/devices/GGL0 145 What: /sys/bus/platform/devices/GGL0001:*/VDAT
146 /sys/bus/platform/devices/GOOG 146 /sys/bus/platform/devices/GOOG0016:*/VDAT
147 Date: May 2022 147 Date: May 2022
148 KernelVersion: 5.19 148 KernelVersion: 5.19
149 Description: 149 Description:
150 Returns the verified boot data 150 Returns the verified boot data block shared between the
151 firmware verification step and 151 firmware verification step and the kernel verification step
152 (hex dump). 152 (hex dump).
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