There has been lots of interest in ARM Trusted Firmware. We are aware that YouTube is unavailable to some parts of the world so you might like these links that should work anywhere:
Go to the session link here: https://lca-14.zerista.com/event/member/102447 you can see links to the presentation slides, video on youtube and video accessible in China:
http://people.linaro.org/linaro-connect/lca14/videos/03-03-Monday/LCA14-102-%20Adopting%20ARM%20Trusted%20Firmware.mp4
For the ARM Trusted Firmware: http://lcu-13.zerista.com/event/member/85121 and
http://people.linaro.org/linaro-connect/lcu13/videos/10-28-Monday/LCU13%20An%20Introduction%20to%20ARM%20Trusted%20Firmware.mp4
Please enjoy the videos and then download the latest release from the Github...
ARM-software/arm-trusted-firmware · GitHub
Great! I have downloaded the videos through the links and youtube is unavailable in china. Thanks for the information.