Difference between revisions of "Leapster Explorer: Common Commands"
(→Connect With your Linux Box) |
(→New Kernel Copy) |
||
Line 62: | Line 62: | ||
mtd2 is where the kernel is stored | mtd2 is where the kernel is stored | ||
+ | |||
+ | == Over Clocking == | ||
+ | |||
+ | It is very simple to overclock (or underclock) your explorer. | ||
+ | |||
+ | == Preliminary Overclock == | ||
+ | |||
+ | Lets say you want to boost the speed up to 532.5mhz? | ||
+ | |||
+ | echo 532500000 > /usr/speed | ||
+ | |||
+ | to speed up your system it is as easy as typing the following | ||
+ | |||
+ | cat /usr/speed > /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz | ||
+ | |||
+ | enjoy | ||
+ | |||
+ | == Living Dangerously == | ||
+ | |||
+ | Once you have tested your overclock, and are sure that it is stable, and you haven't made any typos... | ||
+ | You can actually get the startup script to automagically set the cpu freq for you! | ||
+ | |||
+ | There is a line in /etc/init.d/rcS that checks for /flags/cpu_freq_in_hz, and automatically copies the contents to /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz! | ||
+ | |||
+ | It is important that you test your chosen cpu frequency first using the procedure in section 1, or you might be left with an unbootable device. | ||
+ | |||
+ | echo 532500000 > /flags/cpu_freq_in_hz | ||
+ | |||
+ | Now just reboot, and your Leapster Explorer will automatically boot at the faster speed. Again, '''this is dangerous''', so test it first with the above method. I cannot stress this enough. | ||
+ | |||
+ | == Test Results == | ||
+ | |||
+ | GrizzlyAdams was able to get his to run at any arbitrary speed between 180MHz and 580Mhz. | ||
+ | At 164MHz the display went blank, and serial port stopped responding. | ||
+ | At 600MHz a kernel panic occurred. |
Revision as of 02:09, 18 July 2011
Here are some changes to the LX's default setup that will make your life more easy.
Contents
AppManager
Disable
This will prevent the auto shutoff from kicking in, but you also loose a lot of normal LeapFrog specific functionality.
Temporarily
On Device
killall AppManager app CartManager
Permanently
touch /flags/main_app
Start Different Application
This will allow you to start a different application other than the default LeapFrog application:
echo /path/to/your/app > /flags/main_app
Caution /LF/Bulk isn't guaranteed to be mounted when the start up script is run. If your app isn't found, rcS will remove /flags/main_app to restore the default on the next boot.
Developer Mode
This turns on telnet and ftp by default, and switches to a static IP address.
touch /flags/developer
If you still want to have the automatic private ip:
touch /flags/avahi
And if you want a speedy boot (this eliminates a 6 second wait timer):
touch /flags/no8sec
Removing USB-boot-mode auto-shutdown
When USB booting, the script /usr/bin/recovery runs. On line 8 of that script is an instruction to do a forced shutdown after 600 seconds.
To remove that annoyance, simply comment-out that line:
#( sleep 600; poweroff -f ) &
Debranding
To remove the 2nd boot logo, comment out line 76 of /etc/init.d/rcS:
#imager /dev/layer0 /var/screens/LEGAL.png
To remove the startup sound, comment out line 91 of /etc/init.d/rcS:
#oss -w /var/sounds/startup.wav & # & tim end "sounds/startup.wav" &
New Kernel Copy
This may brick your Explorer and make it require a usb boot so only do this if your brave.
nandscrub -e /dev/mtd2 nandscrub /dev/mtd2 nandwrite /dev/mtd2 /usr/kernel.cbf
mtd2 is where the kernel is stored
Over Clocking
It is very simple to overclock (or underclock) your explorer.
Preliminary Overclock
Lets say you want to boost the speed up to 532.5mhz?
echo 532500000 > /usr/speed
to speed up your system it is as easy as typing the following
cat /usr/speed > /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz
enjoy
Living Dangerously
Once you have tested your overclock, and are sure that it is stable, and you haven't made any typos... You can actually get the startup script to automagically set the cpu freq for you!
There is a line in /etc/init.d/rcS that checks for /flags/cpu_freq_in_hz, and automatically copies the contents to /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz!
It is important that you test your chosen cpu frequency first using the procedure in section 1, or you might be left with an unbootable device.
echo 532500000 > /flags/cpu_freq_in_hz
Now just reboot, and your Leapster Explorer will automatically boot at the faster speed. Again, this is dangerous, so test it first with the above method. I cannot stress this enough.
Test Results
GrizzlyAdams was able to get his to run at any arbitrary speed between 180MHz and 580Mhz. At 164MHz the display went blank, and serial port stopped responding. At 600MHz a kernel panic occurred.