127 lines
3.8 KiB
Plaintext
127 lines
3.8 KiB
Plaintext
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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This file shows information about the current boot of
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the active EC firmware.
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* 0 - Read only (recovery) firmware.
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* 1 - Rewritable firmware.
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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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This file shows information about the current boot of
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the active main firmware type.
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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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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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This file shows the switch position for the Chrome OS specific
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hardware switches.
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* 0 - No changes.
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* 2 - Recovery button was pressed when firmware booted.
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* 4 - Recovery button was pressed when EC firmware booted.
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* 32 - Developer switch was enabled when firmware booted.
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* 512 - Firmware write protection was disabled when firmware
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booted.
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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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This file shows the physical memory address of the start of
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the main 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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This file shows the firmware version for the read-only portion
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of the 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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This file shows the firmware version for the rewritable portion
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of the 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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This file shows the type of the GPIO signal for the Chrome OS
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specific GPIO assignments.
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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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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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This file shows the signal attributes of the GPIO signal.
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* 0 - Signal is active low.
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* 1 - Signal is active high.
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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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This file shows 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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This file shows the 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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This file shows the 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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This binary file returns the SHA-1 or SHA-256 hash that is
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read out of the Management Engine extended registers during
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boot. The hash is exported vi ACPI so the OS can verify that
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the Management Engine firmware has not changed. If Management
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Engine is not present, or if the firmware was unable to read the
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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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This file shows the offset in CMOS bank 0 of the verified boot
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non-volatile storage block, counting from the first writable
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CMOS byte (that is, 'offset = 0' is the byte following the 14
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bytes of 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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This file shows the size in bytes of the verified boot
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non-volatile 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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This binary file returns the verified boot data block shared
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between the firmware verification step and the kernel
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verification step.
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