[PATCH] riscv: Support riscv64 image type

[Rick Chen]

Hi Simon,

> Hi Rick,
>
> On Mon, 10 Apr 2023 at 01:26, Rick Chen <rick at andestech.com> wrote:
> >
> > Allow U-Boot to load 32 or 64 bits RISC-V Kernel Image
> > distinguishly. It helps to avoid someone maybe make a mistake
> > to run 32-bit U-Boot to load 64-bit kernel.
> >
> > Signed-off-by: Rick Chen <rick at andestech.com>
> >
> > ---
> > The patchset is based on Simon's patch:
> > riscv: Add a 64-bit image type
> > ---
> > ---
> >  arch/riscv/include/asm/u-boot.h | 4 ++++
> >  cmd/booti.c                     | 2 +-
> >  2 files changed, 5 insertions(+), 1 deletion(-)
>
> Reviewed-by: Simon Glass <sjg at chromium.org>
>
> I don't know much about RISC-V, but I assume U-Boot is able to do this
> successfully? Does it not need to switch modes first?

No, it is not need to  switch modes as far as I know.
Here only provide a check mechanism just like arm to see if loader and
OS are match

But This patch is for bootm flow.
Maybe I still need to check if it is necessary to prepare a patch for
binman flow ?
/arch/riscv/dts/binman.dtsi
arch = "riscv";

maybe provide another binman64.dtsi for arch="riscv64"

Thanks,
Rick

>
> Regards,
> Simon