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