[PATCH v2] arm: kdump: Add DT properties to crash dump kernel's DTB

[Simon Horman]

On Tue, Oct 05, 2021 at 02:40:32PM +0200, Geert Uytterhoeven wrote:
> Pass the following properties to the crash dump kernel, to provide a
> modern DT interface between kexec and the crash dump kernel:
> 
>   - linux,elfcorehdr: ELF core header segment, similar to the
>     "elfcorehdr=" kernel parameter.
>   - linux,usable-memory-range: Usable memory reserved for the crash dump
>     kernel.
>     This makes the memory reservation explicit, so Linux no longer needs
>     to mask the program counter, and rely on the "mem=" kernel parameter
>     to obtain the start and size of usable memory.
> 
> For backwards compatibility, the "elfcorehdr=" and "mem=" kernel
> parameters are still appended to the kernel command line.
> 
> Loosely based on the ARM64 version by Akashi Takahiro.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>

Thanks Geert, applied.