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[KERNEL][AOSP]Tiamat Xoom 2.0.0 "Katana" [Update: 07/14]


Inactive Recognized Developer
Apr 23, 2007

AOSP Kernels for the Motorola Xoom
Also available for HTC's Droid Incredible, Evo 4G, Nexus One, and Desire (GSM)

Tiamat is a kernel designed for use on the Motorola Xoom. We are very exicted about the future of Honeycomb and Tegra development.
In compliance with the GPL, every change and all attributions can be found in full detail in my github repositories. Please feel free to explore, fork, or even cherry-pick (please include an attribution to the appropriate dev).

Tiamat-AOSP Github Homepage -- Source for all Tiamat Kernels

Version Guide

Tiamat versions are listed in the format X.Y.Z

A progression in X indicates a major change or upgrade from previous versions.
A progression in Y indicates a stable release with some medium alteration or many small ones together.
A progression in Z indicates a minor change and is usually a testing release. Not all of these are released.​
Change Log:

[center][quote][b][size="4"]Version 2.x.x[/size][/b][/quote][/center]

[b]Version 2.0.0[/b]
[*] Apple Magic Mouse Support
[*] 1.7Ghz frequency tweaking
[*] Cpu Frequency scaling patch - should be nicer now.
[*] Disabled the autogroup scheduler
[*] Voltage Controls - Thanks TDR!
[*] Miscellaneous upstream changes

[center][quote][b][size="4"]Version 1.x.x[/size][/b][/quote][/center]

[b]Version 1.4.4[/b]
[*]Introducing 1.7Ghz Overclock!
[*]All frequency steps built in.  1.2, 1.408, 1.504, 1.6, and 1.7!
[*]Two versions.  Overclocked GPU and Stock GPU [request filled]
[*]USB Tether work for real now!  I personally tested with my Evo running Konikub's Evo Elite III Sense Froyo Rom.  See below for script.
[*]Added Realtek 8150 USB Ethernet Dongle Module [request filled]
[*]Usb Mass Storage now stock in build.  Visit [URL="http://forum.xda-developers.com/showthread.php?t=1068999"]Mass Storage Tool Thread by dinomight[/URL] for implementation. (thanks Kcrudup for turning on lun0 for us ;D )
[*]Please see important release notes for this build.

[b]Version 1.4.3[/b]
[*]Fixed second core scaling wake issue.  Thanks TDR
[*]Only need a single build now as scaling works the way it should (Ya for me :D )
[*]Brought back (thanks Cybertronicz for digging it up)
[*]Autogroup Scheduler brought back (by Cybertronicz from .38 tree)
[*]Now using SLUB allocator
[*]Eliminated even more debug bloat
[*]HFS and HFSPlus file system modules for Mac users [request filled]
[*]Usb Mass Storage now stock in build.  Visit [URL="http://forum.xda-developers.com/showthread.php?t=1068999"]Mass Storage Tool Thread by dinomight[/URL] for implementation. (thanks Kcrudup for turning on lun0 for us ;D )

[b]Version 1.4.2[/b]
[*]Two builds! Overclocked to 1.6Ghz and 1.4Ghz.  If you had stability issues with 1.5Ghz, choose the 1.4Ghz. If 1.5Ghz ran fine for you, grab the 1.6Ghz.
[*]Just for now, kernel version had to drop to from
[*]All the popular file system and network mount modules including:
[*]CIFS for windows network mounts
[*]NFS and XFS
[*]TUN with full ipv6 support!
[*]AUFS for dual mount and other uses
[*]NTFS for mounting ntfs partitions
[*]nls_utf8.ko for foreing language network mounts
[*]And much more!
[*]Implemented USB Ethernet for USB Tether from phone to Xoom!
[*]Extreme debug bloat removal and massive kernel optimization
[*]Linpack 69 and Quadrant 4800! (on 1.6Ghz Performance governor)

[b]Version 1.4.1[/b]
[*]Mass Storage has been removed do to stability issues.  Your SD Card still works just fine without it!
[*]More updates from Google AOSP.
[*]Please visit Tiamat Xoom Kernel Github Repo for commit history.

[b]Version 1.4.0[/b]
[*]Mass Storage now enabled in Android with easy scripter script.  Thanks kcrudup for enable mass_storage_platform_device in board driver.
[*]Huge source update from tegra upstream.  Preparation for the elusive Motorola update we don't even need now!
[*]Found lost L2 Cache patch.  Linpack 65 and Quadrant 3000 out the box.
[*]Removed more bloat from kernel.  Much leaner and meaner.

[b]Version 1.3.2[/b]
[*]Now flashable through recovery!  No more fastboot nonsense!
[*]Upgrade to thanks Cybertronicz!
[*]Merged several branches from Kcrudup into Tiamat master.
[*]Removed debugging bloat from modules

[b]Version 1.3.1[/b]
[*]No kernel code modfications, just changes to init.stringray.rc and vold.fstab
[*]sdcard2 now shows up inside sdcard so it plays nice with system and gallery
[*]Make sure you follow special instructions in "How To Install"

[b]Version 1.3.0[/b]
[*]SD Card enabled! Look for "sdcard2" in root. Same install instructions as 1.1.6
[*]Huge thanks to kcrudup for ideas on gpio and "mount at boot" service. You da man!
[*]Thanks onicrom for helping with diagnostics and testing!
[*]Thanks cayniarb, bcnice20, and stiffspliff for teaching me so much!

[b]Version 1.1.6[/b]
[*]Only updated module, no kernel changes
[*]Modified tun.ko for Advanced IP Routing (untested, please provide feedback)

[b]Version 1.1.5[/b]
[*]Added tun.ko for OpenVPN support (untested, please provide feedback)
[*]Added cifs.ko for Windows Netshare (confirmed working)
[*]Modded ramdisk and vold.fstab for USB Hosting support (Thank's a million to Roebeet!)
[*]Works perfect with new OTA!

[b]Version 1.1.0[/b]
[*]Updates to memory patches
[*]Removed Smartass Governor. Need more research.
[*]Updates to wifi drivers for wifi-only device compatibility

[b]Version 1.0.0[/b]
[*]Initial release
[*]Implemented Smartass governer
[*]Enabled additional governers in Kconfig
How to Install

Instruction for flashing Tiamat Xoom Kernel And Boot Image Packs

NOTE: These instruction assume you have flashed ClockworkMod Recovery and upgraded to Honeycomb 3.1!

1. Proceed to the Boot Image Section and grab your favorite boot image. Not needed if you're happy with what you got.

2. Proceed to the Download Center post and grab your kernel.

1. Reboot into recovery.

2. Go into "mounts and storage"

3. Select "mount USB storage"

4. Your SD Card will now be mounted on your computer. Drop the kernel (and boot image pack if applicable) onto SD Card.

5. "Go Back" then go into "install zip from sdcard" then "choose zip from sdcard"

6. If you are flashing a boot image pack, flash it first. Then flash the kernel zip. NOT FOR ANDROID 3.2

7. Back out to main menu and reboot.
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Inactive Recognized Developer
Apr 23, 2007
Kernel Download Center

Download Center​

Only get Official Tiamat Xoom Kernel releases from this location or download from Kernel Manager. As a user and Android Enthusiast, you can rest assured that the releases from these sources are SAFE. These releases have been rigorously tested and are suitable for public release.
As a Tiamat Xoom Kernel User, you agree to the following terms and common sense principals

  • As an Android Enthusiast, you are responsible for having a basic understanding of commonly used tools. These include, but are not limited to, ADB, shell, fastboot, and ClockworkMod Recovery.
  • You agree to follow the instructions EXACTLY AS POSTED. With recovery and Kernel Manager, it should now be relatively easy to flash.
  • You agree that this is a kernel development thread on a development website. You will treat other users with dignity respect. Your posts will be easily understandable and productive.
  • You agree to NEVER ASK FOR TIMEFRAMES OR ETA'S. I have a boss at work, and at home, and it's not you. ;)
  • As an Android Developer, I pledge to release SAFE kernels that are as stable as possible. The goal of kernel development is to improve the performance, battery life, and provide additional functionality to Android devices.
  • I pledge to keep my Github repository up-to-date. You will ALWAYS be able to fork, pull request, or just review my source. In fact, I highly encourage user participation in the development process.
By clicking on the download links below, you agree to the terms and conditions set forth in the aforementioned paragraph.

Full repository of all versions, released and unreleased for the HTC Droid Incredible, the HTC Evo 4G, and the Xoom

Release notes for 2.0.0:
Tiamat Kernel 2.0.0 Katana, is ONLY TO BE USED WITH 3.2. IT WILL NOT WORK WITH 3.1.
Also, do not flash a boot.img as this will also break stuff at the moment on 3.2.
Release Notes for 1.4.4: 1.7Ghz is likely as far as we can push the Tegra2 cores. We have stress tested the heck out of 1.7 and it is safe. However, safe does not mean stable. Personally, I can run 1.7 on Interactive governor all day and it's smooth as butter. Other folks get reboots. If you can not run at 1.7, try 1.6. Everybody who tested was able to run at 1.504 without any problems. Just because this release is clocked to 1.7, that does not mean you can not run at stock speeds. Simply do not overclock. The settings for 1Ghz are identical to stock settings. I HIGHLY RECOMMEND you leave your device on INTERACTIVE. You may use Performance solely for benchmarking purposes, but then PUT IT BACK.

USB Tether: Plug OTG cable into Xoom. Plug phone with microUSB cable into OTG cable. On phone, enable USB Tether. On Xoom, run the following in terminal or script manager (Scripter, GScript, Tasker) of your choice.

dhcpcd usb1
setprop net.dns1
The Xoom will not show any indication that there is a network connection. But pull up your browser and surf away. Like I said earlier, I tested this personally on the Evo with a Sense rom. It works perfect. However, there are countless devices out there. Your experience may vary.

Version 2.0.0 "Katana" - Overclocked GPU
MD5sum: f6d64e4e81d2ac050ac1c603b1dbae84

Version 2.0.0 "Katana" - Stock GPU
MD5sum: 1fd6a9dfe9c977d53483cb87be258687

Version 1.4.4 "Full Throttle Baby!" -- Bitly Bundle for better tracking

Archive can be found at http://bigrushmods.com/tiamat.html
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Inactive Recognized Developer
Apr 23, 2007
Tiamat Xoom Kernel Modpacks

Tiamat Xoom Kernel Boot Images For Honeycomb 3.1 ONLY NOT FOR 3.2

Be sure to flash your boot image first! Then flash your kernel. You can flash the boot image and kernel back-to-back in the same recovery session. Don't worry. If you mess up and flash just these boot images, your device will still boot.:rolleyes::rolleyes:

About These Boot Images

These modifications apply to all boot images

  • Enable MicroSD card in Android mounted at "sdcard/external".
  • Enable USB Host with and OTG cable mounted at "/usbOTG"
  • New! EXT4 file system mount mod for faster write speeds and killer Quadrant scores. Thanks TDR from AndroidCentral!

Charging light on when device is on
MD5SUM: fb27af9e9351458b7dfac45b9a1d8b0c

Charging light off when device is on (stock behavior)
MD5SUM: cbe6d5123ef9a734625f6fac40a5a25c

Verizon 3G Only

Charging light on when device is on
MD5SUM: c96a3b1941b9055c3f062ef8d37f8db9

Charging light off when device is on (stock behavior)
MD5SUM: cf16de47b473e8804967e61b13c68343
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New member
Jun 25, 2009
thanks for sharing

so far ive flashed with no issues and everything is running snappy im on 1504 using smartass governer

everyone please be sure to join #xoom on freenode for future updates


New member
Jun 25, 2009
Flashing Instructions

1. Reboot into the bootloader by running:
adb reboot bootloader

2. Flash the boot image to your boot partition, then boot back into Android by running:
fastboot flash boot boot.img
fastboot reboot

3. Push the bcm4329.ko and scsi_wait_scan.ko to your /system/lib/modules folder and reboot to re-enable wifi:
adb remount
adb push bcm4329.ko /system/lib/modules/bcm4329.ko
adb push scsi_wait_scan.ko /system/lib/modules/scsi_wait_scan.ko
adb reboot

CREDIT FOR Flashing Instructions Template goes to coolbho3000


New member
Dec 31, 2010
I'm so glad to see that this stuff is happening before I even have a XOOM in my hands! Amazing work!

I have a question about the scaling.

If I wanted my processor to only run at 1.5 when it needs to, which governor should I use? On my OG Droid I use Ondemand, and it seems to do exactly that (Correct me if I'm wrong) and the battery life is amazing. I'm assuming that's the setting I would use here, too.

What exactly does the Smartass governor do?


New member
Aug 29, 2009
looks like you downloaded the .zip installer file for clockwork recovery. I did the same thing, the link for the actual boot.img appears to be down. I looked at the script for the .zip and it appears that he is using the AnyKernel updated by Koush in the .zip, so the actual kernel is made by the .zip. We need a download to the actual boot.img before we can flash anything, and the link appears to be down...unless i am very mistaken.;)


Retired Recognized Developer
Jun 6, 2010
Glad to get this kernel out to people for the Xoom and to have Bigrushdog taking up maintaining it. Check out the other Tiamat kernels for the Incredible and the Evo. Links in the signature.
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