some questions about elf_ppc64_load

[Laurent Dufour]

On 06/01/2015 07:44, liu.song11 at zte.com.cn wrote:
> 
> hi all，
> 
> I use kexec-tools-2.0.8 for ppc64, in fuction elf_ppc64_load prompt "Can't use ramdisk with device tree blob input".
> 
> I don't know why here ramdisk can't together with dtb,and need some help.

The device tree is also specifying initrd (see kexec/fs2dt.c putnode),
so there is 2 initrd specify in that case. The code is a bit rough here,
but I guess this is because there is not yet a valid use case.

> I also have some questions, when I just ./kexe -l vmlinux then ./kexec -e, will jump to second kernel sucessfully,
> 
> but without useful dtb, then device can't init correct. But, when I input ./kexec -l vmlinux --dtb=my.dtb , then
> 
> ./kexec -e, the kernel couldn't work and crash in head_64.S, this problem also make me confused.

It's hard to state with no more details. I guess the device tree blob
you're using is not valid, or contain bad data.

Cheers,
Laurent.

> Thanks
> Regards
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