[PATCH 2/2] kexec-arm64: Add functionality to dump 2nd dtb

[Bhupesh Sharma]

On Mon, Mar 19, 2018 at 3:55 PM, Bhupesh Sharma <bhsharma at redhat.com> wrote:
> Since during the arm64 kexec_load()/kdump invocation,
> the dtb is passed to the second kernel, it is sometimes useful
> to dump the dtb contents (to verify the correctness
> of the same).
>
> This patch adds this feature which is enabled when '-d' flag is
> used with kexec command line invocation.
>
> Signed-off-by: Bhupesh Sharma <bhsharma at redhat.com>
>
> Merge with 2nd patch
>
> Signed-off-by: Bhupesh Sharma <bhsharma at redhat.com>
> ---
>  kexec/arch/arm64/kexec-arm64.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
> index 62f37585b788..c304c3775ada 100644
> --- a/kexec/arch/arm64/kexec-arm64.c
> +++ b/kexec/arch/arm64/kexec-arm64.c
> @@ -471,12 +471,14 @@ static int setup_2nd_dtb(struct dtb *dtb, char *command_line, int on_crash)
>                         result = -EINVAL;
>                         goto on_error;
>                 }
> -
> +
>                 fdt_pack(new_buf);
>                 dtb->buf = new_buf;
>                 dtb->size = fdt_totalsize(new_buf);
>         }
>
> +       dbgprintf("%s: found %s\n", __func__, dtb->path);
> +       dump_fdt(dtb->buf);
>         dump_reservemap(dtb);
>
>
> --
> 2.7.4
>


Kindly ignore this version. It seems it had some issue before I sent
it out. I will send a revised version shortly.

regards,
Bhupesh