On Gwe, 2005-05-27 at 18:30, Stanislaw Skowronek wrote: > > Does the firmware give you the ability to control MMU mappings ? > > I think we won't - this would be a serious security bug. That depends who the device is defending against and how. MMU control cuts both ways in game consoles (if present) - it makes it harder to defend the console from a hostile writer, but it also makes it easier for the game authors to debug and to trap/recover from errors when the game is deployed. For ucLinux you essentially need a console, an input device (keyboard etc), a storage device, the ability to allocate memory and a timer interrupt/callback. Absolutely everything else is optional. So you can probably run ucLinux as a 'game' which allocates lots of memory, requests a timer callback and drives the entire world through the firmware. Whether you can do non-ucLinux depends on MMU access and control. If you've got some kind of MMU interface then you've probably got sufficient to do a full Linux but ucLinux would still be a natural stepping stone in exploration. Alan
