You can ask questions here on Community. However, note that this is a forum for open discussion and comes with no entitlement to support. Normal forum rules apply. Specific well targeted questions, relevant to this Community, are more likely to receive a prompt response.
We can't guarantee to address general software questions or issues relating to 3rd party development platforms based around Arm processors. The Home page and the Supported Platforms page of the Wiki have information about the remit of this community.
For Arm partners (IP licensees, or customers who have purchased development platforms or tools) the official support channel is via email or Arm's Support Portal
You can also contact Arm's support alias, support-system-software@arm.com. and Linaro members can contact Linaro directly for help with relevant issues.