Re: [U-Boot] Passing bootargs to arm64 kernel

On Wed, Aug 13, 2014 at 11:21:32AM +0900, Youngmin Nam wrote:

Hello. I'm trying to find a way how to pass bootargs to arm64 kernel.

In arm32 kernel, we can pass bootargs with atag from u-boot to kernel. So, we can overwrite kernel's bootargs with u-boot's bootargs.

But from arm64 kernel, the dtb is the only argument that should be passed from bootloader which is mandatory. you can find this contents in kernel documentation.(Documentation/arm64/Booting.txt)

So, is there any way how to set bootargs by u-boot?

Yes, within the device tree, like we do today. There's a few issues we have today, but I need to re-post the booti command support patches, given what's coming in 3.17 in the kernel.