Re: [U-Boot] dtb vs. kernel command line arguments

On Mon, 4 Mar 2013 10:30:45 -0800 Curt Brune curt@cumulusnetworks.com wrote:

Hello -

I want to pass a number of arguments from u-boot to the booted kernel. The arguments are needed by user space applications, not the kernel.

I can think of two ways:

1. append args by setting "bootargs".
2. add nodes to the dtb before booting.

Is there a preferred way to pass information like this?

Like I said the arguments are not needed by the kernel device drivers, but by user space applications.

I like the structure of nodes in the dtb.

please don't dual-purpose device trees as a mechanism of getting arguments through the kernel into userspace - device trees strictly describe the hardware.

btw, this question would be more appropriately posted on devicetree-discuss (in case you have more).

Kim