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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 | What: /sys/bus/platform/devices/GGL0001:*/BINF.2 Date: May 2022 KernelVersion: 5.19 Description: Returns active EC firmware of current boot (boolean). == =============================== 0 Read only (recovery) firmware. 1 Rewritable firmware. == =============================== What: /sys/bus/platform/devices/GGL0001:*/BINF.3 Date: May 2022 KernelVersion: 5.19 Description: Returns main firmware type for current boot (integer). == ===================================== 0 Recovery. 1 Normal. 2 Developer. 3 Netboot (factory installation only). == ===================================== What: /sys/bus/platform/devices/GGL0001:*/CHSW Date: May 2022 KernelVersion: 5.19 Description: Returns switch position for Chrome OS specific hardware switches when the firmware is booted (integer). ==== =========================================== 0 No changes. 2 Recovery button was pressed. 4 Recovery button was pressed (EC firmware). 32 Developer switch was enabled. 512 Firmware write protection was disabled. ==== =========================================== What: /sys/bus/platform/devices/GGL0001:*/FMAP Date: May 2022 KernelVersion: 5.19 Description: Returns physical memory address of the start of the main processor firmware flashmap. What: /sys/bus/platform/devices/GGL0001:*/FRID Date: May 2022 KernelVersion: 5.19 Description: Returns firmware version for the read-only portion of the main processor firmware. What: /sys/bus/platform/devices/GGL0001:*/FWID Date: May 2022 KernelVersion: 5.19 Description: Returns firmware version for the rewritable portion of the main processor firmware. What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.0 Date: May 2022 KernelVersion: 5.19 Description: Returns type of the GPIO signal for the Chrome OS specific GPIO assignments (integer). =========== ================================== 1 Recovery button. 2 Developer mode switch. 3 Firmware write protection switch. 256 to 511 Debug header GPIO 0 to GPIO 255. =========== ================================== What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1 Date: May 2022 KernelVersion: 5.19 Description: Returns signal attributes of the GPIO signal (integer bitfield). == ======================= 0 Signal is active low. 1 Signal is active high. == ======================= What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.2 Date: May 2022 KernelVersion: 5.19 Description: Returns the GPIO number on the specified GPIO controller. What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.3 Date: May 2022 KernelVersion: 5.19 Description: Returns name of the GPIO controller. What: /sys/bus/platform/devices/GGL0001:*/HWID Date: May 2022 KernelVersion: 5.19 Description: Returns hardware ID for the Chromebook. What: /sys/bus/platform/devices/GGL0001:*/MECK Date: May 2022 KernelVersion: 5.19 Description: Returns the SHA-1 or SHA-256 hash that is read out of the Management Engine extended registers during boot. The hash is exported via ACPI so the OS can verify that the Management Engine firmware has not changed. If Management Engine is not present, or if the firmware was unable to read the extended registers, this buffer size can be zero. What: /sys/bus/platform/devices/GGL0001:*/VBNV.0 Date: May 2022 KernelVersion: 5.19 Description: Returns offset in CMOS bank 0 of the verified boot non-volatile storage block, counting from the first writable CMOS byte (that is, 'offset = 0' is the byte following the 14 bytes of clock data). What: /sys/bus/platform/devices/GGL0001:*/VBNV.1 Date: May 2022 KernelVersion: 5.19 Description: Return the size in bytes of the verified boot non-volatile storage block. What: /sys/bus/platform/devices/GGL0001:*/VDAT Date: May 2022 KernelVersion: 5.19 Description: Returns the verified boot data block shared between the firmware verification step and the kernel verification step (hex dump). |