What: /sys/bus/platform/devices/GGL0001:*/BINF.2
/sys/bus/platform/devices/GOOG0016:*/BINF.2
Date: May 2022
KernelVersion: 5.19
Description:
Returns active EC firmware of current boot (boolean).
What: /sys/bus/platform/devices/GGL0001:*/BINF.3
/sys/bus/platform/devices/GOOG0016:*/BINF.3
Date: May 2022
KernelVersion: 5.19
Description:
Returns main firmware type for current boot (integer).
What: /sys/bus/platform/devices/GGL0001:*/CHSW
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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).
What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/GPIO.X/GPIO.3
Date: May 2022
KernelVersion: 5.19
Description:
Returns name of the GPIO controller.
What: /sys/bus/platform/devices/GGL0001:*/HWID
/sys/bus/platform/devices/GOOG0016:*/HWID
Date: May 2022
KernelVersion: 5.19
Description:
Returns hardware ID for the Chromebook.
What: /sys/bus/platform/devices/GGL0001:*/MECK
/sys/bus/platform/devices/GOOG0016:*/MECK
Date: May 2022
KernelVersion: 5.19
Description:
Returns the SHA-1or 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, orif the firmware was unable to read the extended registers, this buffer size can be zero.
What: /sys/bus/platform/devices/GGL0001:*/VBNV.0
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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
/sys/bus/platform/devices/GOOG0016:*/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).
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