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Kernel boot command-line parameters
This page documents some of the kernel boot command-line parameters that are useful for XDAndroid users.
- acpuclock.force_turbo
- arch/arm/mach-msm/acpuclock.c
- ?
- acpuclock.oc_freq_khz
- arch/arm/mach-msm/acpuclock.c
- change this for overclocking (should be a multiple of 19200)
- 768000: 768 MHz
- 614400: 614.4 MHz
- board-htcraphael-navi.wake
- arch/arm/mach-msm/board-htcraphael-navi.c
- Controls which buttons wake the device from sleep.
- 0: ?
- board-htcrhodium-proximity.on
- arch/arm/mach-msm/board-htcrhodium-proximity.c
- 1: enable proximity sensor
- board-htcrhodium-proximity.wake
- arch/arm/mach-msm/board-htcrhodium-proximity.c
- 1: enable wake on proximity sensor
- board-htcvogue.panel_type
- arch/arm/mach-msm/board-htcvogue.c
- Panel type used to power the panel off and on.
- 0: don't power off the panel (default)
- 1: Hitachi
- 2: Topoly
- 3: Samsung
- clock-7x00.a11
- arch/arm/mach-msm/clock-7x00.c
- ARM11 clock speed in MHz.
- clock-7x00.ahb_div
- arch/arm/mach-msm/clock-7x00.c
- Advanced Host Bus (AHB) divider.
- clock-7x00.mddi
- arch/arm/mach-msm/clock-7x00.c
- Mobile Display Digital Interface (MDDI) clock address/offset/? (e.g. 0xa51 or 0xe2c)
- external.rhod_speaker
- arch/arm/mach-msm/qdsp5/external.c
- 1: enable external speaker
- gsensor_axis
- Maps the hardware accelerometer axes to software.
- htcblackstone-panel.no_bkl_off
- arch/arm/mach-msm/board-htcblackstone-panel.c
- 1: don't turn off the backlight
- htc_battery_smem.fake
- arch/arm/mach-msm/htc_battery_smem.c
- 1: turn off low-battery warning
- htc_hw.call_vol
- arch/arm/mach-msm/htc_hw.c
- in-call speaker volume level (non-speakerphone speaker)
- 0: lowest volume
- ...
- 5: highest volume
- force_cdma
- arch/arm/mach-msm/htc_hw.c
- 1: tells the phone to use CDMA. This is useful for the Touch Pro2, which can contain both GSM and CDMA hardware.
- htc_hw.handsfree
- arch/arm/mach-msm/htc_hw.c
- ?
- hw3d.force
- arch/arm/mach-msm/hw3d.c
- 1: enable hardware 3D
- lcd.density
- ?
- mddi.width
- MDDI - ?
- mddi.height
- MDDI - ?
- msm_blackstone_pad.vibrate
- 1 - ?
- msmsdcc_1bit
- drivers/mmc/host/msm_sdcc.c
- Eschews 4-bit-data mode for 1-bit-data mode in the MSM SD Card Controller.
- msmsdcc_fmax
- drivers/mmc/host/msm_sdcc.c
- The maximum frequency (in Hz) used by the MSM SD Card Controller.
- msmsdcc_nopwrsave
- drivers/mmc/host/msm_sdcc.c
- Disables power saving in the MSM SD Card Controller.
- msmts_calib
- ?
- msmvkeyb_toggle
- off: MSM virtual keyboard - ?
- north_am_dialing
- htcgeneric-ril/htcgeneric-ril.c
- 1: tells the RIL to strip "+" characters from phone numbers before dialing them. This is useful with some North American carriers (e.g. Sprint) that do not handle phone numbers containing "+". See also http://wiki.cdg.org/wiki/Plus_Code_Dialing.
- physkeyboard
- fuze
- raph
- german_raph
- nordic_raph
- swiss_raph
- rhod100_de
- rhod100_fr
- rhod100_it
- rhod100_nordic
- rhod100_uk
- rhod210
- rhod400 (Sprint keyboard)
- rhod500 (Verizon keyboard)
- tilt2
- pm.debug_mask
- arch/arm/mach-msm/pm.c
- power management - debug options
- 2: vibrates phone lightly after it exits deep sleep
- pm.sleep_mode
- arch/arm/mach-msm/pm.c
- power management: set the mode used when the phone is "off"
- 0: Power Collapse Suspend - totally power off the ARM11 (registers must be restored)[1]
- 1: Power Collapse - totally power off the ARM11 (registers must be restored)[1]
- 2: Apps Sleep - ARM11 is still on, but put into low-power mode (registers are still saved)[1]
- 3: the ARM11's clock is lowered to 20 MHz instead of 300–500, and voltage is lowered too; wait for interrupt[1]
- 4: Wait for Interrupt - no change in ARM11's clock or voltage[1]
- pmem.extra
- 1: ?
- ppp.apn
- PPP Access Point Name, e.g. "internet"
- ppp.nostart
- 1: disable starting the PPP connection on boot
- ppp.password
- The password used to connect to the network when dialing #777.
- ppp.username
- The username used to connect to the network when dialing #777.
- rel_path
- The path where the kernel should look for other XDAndroid files.
- sensor
- topaz: ?
- snd.force_headset
- arch/arm/mach-msm/qdsp5/snd.c
- add headset half autodetection, when you plug in/out the headset, to apply the output update, make a call (or find any other way to call snd_set_device's ioctl)
- 1: extUSB audio I/O
- 2: 3.5-mm jack
External links
- http://www.androidonhtc.com/wiki/Boot_Options - similar information
- http://sites.google.com/site/androidport/faq - look for "What are the different cmdline switches I can pass in the Startup.txt?"
