SCFW: how to use RPC protocol to get a resource access from Linux, to use a hw peripheral

[dry]

Anyone can provide a detailed code example of how to use this RPC protocol, to communicate from the Ax cores/Linux to SCFW or the cores that own a resource I want, to get access to that resource...?

Can I do / use The Resource Management (RM) API"  this way, through RPC ..?

Does this only work at kernel level, and then needs a user-space client, like scfw_cli app...?

I don't understand how scfw_cli app works, can it invoke Any of those SCFW APi calls ..? Can it do the RM stuff...?  Example please ..??

[flobro]

also, where is the document "System Controller Firmware Command Line Utility for Linux and QNX"?

The links all still point to "https://source.codeaurora.org/external/imxsupport/scfw_cli/"

[flobro]

Posting links to the SCFW porting guide is not a reasonable answer to the questions. At least tell people that there is currently NO solution to user space SCFW register access unless YOU write a device driver yourself (and the user space app that uses it). I would love to read the pad/mux register to verify the settings, but no such luck.

I have read the porting guide and it is not helpful to someone who wants to possibly write a driver to set/get values for development mode.

[13614278]

Yeah, no offensive, but I have to say, it is really pity that the document is too poor for this scfw api.

It seems there are so many pdf/html, but just a full list plain text, without any useful info 

[jimmychan]

You could download the SCFW porting kit from here. There is source code and the documentation in the porting kit.

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

e.g. SCFW Porting Kit​ 1.14.0

[dry]

@jimmychan 

Yes, I got it, and seems you have to modify Linux kernel to allow user-space app to use the SC services ...

Also no clear example how to, for example, ask resource owner to use it from another domain .?

[jimmychan]

Maybe this one more useful for you.

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/System-Controller-Firmware-101-Getting-s...