[U-Boot] [Patch v2] fsl-layerscape: fdt: add IFC fixup if no IFC is avaliable in U-Boot

Scott Wood oss at buserror.net
Tue May 3 06:32:03 CEST 2016


On Thu, 2016-04-28 at 14:04 +0800, Gong Qianyu wrote:
> IFC is considered as a required component in Layerscape platforms' Linux.

What does this mean?

> But if IFC is not enabled in U-Boot on some boards, accessing IFC memory
> space would cause kernel call trace. So disable IFC node in such cases.

That's the symptom, not the problem.  The problem is that the kernel is
assuming that U-Boot has done certain initialization, such as the chipselect
registers, and clearing SRAM (though Linux really should be doing the latter).
 Why is U-Boot being configured without this?

-Scott



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