Android R13.4-Beta image

Published on September 9, 2012

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As we mentioned in this post last week, Freescale released an update to Android for the i.MX6.

We've put together an SD card image for this release, and in this post, we'll provide details about how to get your hands on it as well as details of what we've done to customize the image.

Installation for the Linux user:

You can grab the image from this link:

The image was created using dd and you can restore it to a 4GB SD card on a Linux machine like so:

~/$ bzcat imx6-ics-20120908.img.bz2 | sudo dd bs=1M of=/dev/mmcblk0 ... long time passes ~/$ sync

Note that the example above presumes that you have a built-in SD card reader. If you have a USB card reader, you may have to use /dev/sdb or /dev/sdc.

Installation for Windows users:

For the Microsoft-inclined, we have another image at this URL:

It can be restored to an SD card using Alex Page's very nice USB Image Tool.

Screen Configuration

The boot script in this image is configured to expect bootargs to contain the proper video= clause(s) for your display as shown in the following table:

Screen and connectionbootargs
1080P HDMIvideo=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:off
720P HDMIvideo=mxcfb0:dev=hdmi,1280x720M@60,if=RGB24 video=mxcfb1:off
Freescale LVDSvideo=mxcfb0:dev=ldb,LDB-XGA,if=RGB666 video=mxcfb1:off
Boundary LVDSvideo=mxcfb0:dev=ldb,1024x600M@60,if=RGB666 video=mxcfb1:off
Boundary RGBvideo=mxcfb0:dev=lcd,CLAA-WVGA,if=RGB666 video=mxcfb1:off calibration tsdev=tsc2004

Customization details

We've done a number of things to customize the image released by Freescale:

These changes were made a bit easier by changing the partitioning slightly from Freescale's partition usage. To be specific, we formatted p1 as VFAT and placed the kernel (uImage), ram disk (uramdisk.img), U-Boot (u-boot.bin) and boot scripts (/6q_bootscript and /6q_upgrade) inside it.

By making these changes, we were able to use adb pull and adb push to grab and replace the individual pieces.

Refer to this post for details of how you can update a RAM disk image.