Hi Al,
        
        I have been using the firmware, version 1.1.0-rh-0.14-linaro-5
        built at 08:49:30 on Feb 12 2015.
        With acpi=force the boot hangs. Do I need to upgrade the
        firmware?
        
        Itaru 
        
        >The default on Fedora is not
 ACPI;
        use
 acpi=force
        and it should work.
        >You will also need to make sure you have the latest version
        of the Mustang
        >firmware.
        >
        >You can find kernel source here:
        >
        >   hhttp://
git.fedorahosted.org/git/kernel-arm64.git
        >
        >This is the kernel I use on my Fedora-based Mustang.