crossystem1
Chrome os firmware/system interface utility
Overview
Usage:
-
crossystem [--all]
-
Prints all parameters with descriptions and current values. If
--allis specified, prints even normally hidden fields.
-
crossystem [param1 [param2 [...]]]
-
Prints the current value(s) of the parameter(s).
-
crossystem [param1=value1] [param2=value2 [...]]]
-
Sets the parameter(s) to the specified value(s).
-
crossystem [param1?value1] [param2?value2 [...]]]
-
Checks if the parameter(s) all contain the specified value(s).
Stops at the first error. Valid parameters:
arch
|
Platform architecture |
|---|---|
backup_nvram_request
|
Backup the nvram somewhere at the next boot. Cleared on success. |
battery_cutoff_request
|
Cut off battery and shutdown on next boot. |
block_devmode
|
Block all use of developer mode |
clear_tpm_owner_request
|
Clear TPM owner on next boot |
clear_tpm_owner_done
|
Clear TPM owner done |
cros_debug
|
OS should allow debug features |
dbg_reset
|
Debug reset mode request (writable) |
debug_build
|
OS image built for debug features |
dev_boot_usb
|
Enable developer mode boot from USB/SD (writable) |
dev_boot_legacy
|
Enable developer mode boot Legacy OSes (writable) |
dev_boot_signed_only
|
Enable developer mode boot only from official kernels (writable) |
dev_default_boot
|
default boot from legacy or usb (writable) |
devsw_boot
|
Developer switch position at boot |
devsw_cur
|
Developer switch current position |
disable_dev_request
|
Disable virtual dev-mode on next boot |
ecfw_act
|
Active EC firmware |
fmap_base
|
Main firmware flashmap physical address |
fwb_tries
|
Try firmware B count (writable) |
fw_vboot2
|
1 if firmware was selected by vboot2 or 0 otherwise |
fwid
|
Active firmware ID |
fwupdate_tries
|
Times to try OS firmware update (writable, inside kern_nv) |
fw_tried
|
Firmware tried this boot (vboot2) |
fw_try_count
|
Number of times to try fw_try_next (writable) |
fw_try_next
|
Firmware to try next (vboot2,writable) |
fw_result
|
Firmware result this boot (vboot2,writable) |
fw_prev_tried
|
Firmware tried on previous boot (vboot2) |
fw_prev_result
|
Firmware result of previous boot (vboot2) |
hwid
|
Hardware ID |
kern_nv
|
Non-volatile field for kernel use |
kernkey_vfy
|
Type of verification done on kernel key block |
loc_idx
|
Localization index for firmware screens (writable) |
mainfw_act
|
Active main firmware |
mainfw_type
|
Active main firmware type |
nvram_cleared
|
Have NV settings been lost? Write 0 to clear |
oprom_needed
|
Should we load the VGA Option ROM at boot? |
recovery_reason
|
Recovery mode reason for current boot |
recovery_request
|
Recovery mode request (writable) |
recovery_subcode
|
Recovery reason subcode (writable) |
recoverysw_boot
|
Recovery switch position at boot |
recoverysw_cur
|
Recovery switch current position |
recoverysw_ec_boot
|
Recovery switch position at EC boot |
ro_fwid
|
Read-only firmware ID |
sw_wpsw_boot
|
Firmware write protect software setting enabled at boot (Baytrail only) |
tpm_attack
|
TPM was interrupted since this flag was cleared |
tpm_fwver
|
Firmware version stored in TPM |
tpm_kernver
|
Kernel version stored in TPM |
tpm_rebooted
|
TPM requesting repeated reboot (vboot2) |
try_ro_sync
|
try read only software sync |
tried_fwb
|
Tried firmware B before A this boot |
vdat_flags
|
Flags from VbSharedData |
vdat_lfdebug
|
LoadFirmware() debug data (not in print-all) |
vdat_lkdebug
|
LoadKernel() debug data (not in print-all) |
vdat_timers
|
Timer values from VbSharedData |
wipeout_request
|
Firmware requested factory reset (wipeout) |
wpsw_boot
|
Firmware write protect hardware switch position at boot |
wpsw_cur
|
Firmware write protect hardware switch current position |
Releases
6 releases since Debian 8 (Jessie); the text changed 1 time.