On Tue, Sep 15, 2009 at 7:42 AM, Paul Fox <[email protected]> wrote: > on the XO, openfirmware stays resident when linux runs, and is > accessible via an API specified in arch/x86/kernel/ofw.c. i've > just pushed a commit to our 2.6.30 kernel branch that adds a > sysrq hook (SysRq-y) for starting (returning to?) the resident > OFW command line interface. when invoked, you can do all the > usual OFW peeking and poking, and even play pong. (and, since > linux is still active, you can royally trash your system if > you're not careful.) > > there's no SysRq key on the XO keyboard, so you'll need to use a > break on the serial console to invoke it, or, usually easier: > "echo y > /proc/sysrq-trigger". use "resume" from OFW to let > linux run again.
Added to http://wiki.sugarlabs.org/go/The_undiscoverable http://wiki.laptop.org/go/Open_Firmware Thanks. http://wiki.olpc.org/go/Open_Firmware http://wiki.sugarlabs.org/go/The undiscoverable Thanks again. > OFW itself prevents invocation on secure machines, so this > only works when unlocked. > paul > =--------------------- > paul fox, [email protected] > _______________________________________________ > Devel mailing list > [email protected] > http://lists.laptop.org/listinfo/devel > -- Edward Mokurai (默雷/धर्ममेघशब्दगर्ज/دھرممیگھشبدگر ج) Cherlin Silent Thunder is my name, and Children are my nation. The Cosmos is my dwelling place, the Truth my destination. http://earthtreasury.org/ _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
