2023-08-30 17:31:07 +02:00
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What: /sys/bus/platform/devices/GGL0001:*/BINF.2
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns active EC firmware of current boot (boolean).
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== ===============================
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0 Read only (recovery) firmware.
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1 Rewritable firmware.
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== ===============================
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What: /sys/bus/platform/devices/GGL0001:*/BINF.3
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns main firmware type for current boot (integer).
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== =====================================
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0 Recovery.
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1 Normal.
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2 Developer.
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3 Netboot (factory installation only).
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== =====================================
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What: /sys/bus/platform/devices/GGL0001:*/CHSW
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns switch position for Chrome OS specific hardware
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switches when the firmware is booted (integer).
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==== ===========================================
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0 No changes.
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2 Recovery button was pressed.
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4 Recovery button was pressed (EC firmware).
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32 Developer switch was enabled.
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512 Firmware write protection was disabled.
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==== ===========================================
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What: /sys/bus/platform/devices/GGL0001:*/FMAP
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns physical memory address of the start of the main
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processor firmware flashmap.
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What: /sys/bus/platform/devices/GGL0001:*/FRID
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns firmware version for the read-only portion of the
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main processor firmware.
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What: /sys/bus/platform/devices/GGL0001:*/FWID
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns firmware version for the rewritable portion of the
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main processor firmware.
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What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.0
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns type of the GPIO signal for the Chrome OS specific
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GPIO assignments (integer).
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=========== ==================================
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1 Recovery button.
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2 Developer mode switch.
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3 Firmware write protection switch.
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256 to 511 Debug header GPIO 0 to GPIO 255.
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=========== ==================================
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What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.1
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns signal attributes of the GPIO signal (integer bitfield).
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== =======================
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0 Signal is active low.
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1 Signal is active high.
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== =======================
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What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.2
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns the GPIO number on the specified GPIO
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controller.
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What: /sys/bus/platform/devices/GGL0001:*/GPIO.X/GPIO.3
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns name of the GPIO controller.
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What: /sys/bus/platform/devices/GGL0001:*/HWID
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns hardware ID for the Chromebook.
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What: /sys/bus/platform/devices/GGL0001:*/MECK
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns the SHA-1 or SHA-256 hash that is read out of the
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Management Engine extended registers during boot. The hash
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is exported via ACPI so the OS can verify that the Management
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Engine firmware has not changed. If Management Engine is not
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present, or if the firmware was unable to read the extended registers, this buffer size can be zero.
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What: /sys/bus/platform/devices/GGL0001:*/VBNV.0
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns offset in CMOS bank 0 of the verified boot non-volatile
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storage block, counting from the first writable CMOS byte
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(that is, 'offset = 0' is the byte following the 14 bytes of
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clock data).
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What: /sys/bus/platform/devices/GGL0001:*/VBNV.1
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Return the size in bytes of the verified boot non-volatile
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storage block.
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What: /sys/bus/platform/devices/GGL0001:*/VDAT
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Date: May 2022
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KernelVersion: 5.19
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Description:
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Returns the verified boot data block shared between the
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firmware verification step and the kernel verification step
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2023-10-24 12:59:35 +02:00
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(hex dump).
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