Sparc - Leon - New driver creation

Sebastian Huber sebastian.huber at
Fri Sep 8 11:34:20 UTC 2017

On 08/09/17 11:57, Sebastian Huber wrote:

> On 08/09/17 11:28, Yannick SARTHOU wrote:
>> *What I want to achieve :* I want to create a new driver that allows 
>> the user to open a device "/dev/mram" and use ioctl calls to allow 
>> the user to control these registers in a safe way.
> You don't have to use a device driver for this. You need a device 
> driver only if you want to be portable to systems with a user/kernel 
> space separation or avoid link time dependencies. You can define a 
> simple API with normal functions for your MRAM device.

For device drivers on SPARC you can use the classic device drivers, a 
driver manager device driver or an IMFS generic node. I would use an 
IMFS generic node, see IMFS_make_generic_node() with comments in imfs.h.

Sebastian Huber, embedded brains GmbH

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