[U-Boot] [PATCH v2 2/3] x86: efi: Fix EFI 64-bit payload build warnings

[Simon Glass]

On 25 August 2016 at 02:47, Bin Meng <bmeng.cn at gmail.com> wrote:
> There are lots of warnings when building EFI 64-bit payload.
>
> include/asm-generic/bitops/__fls.h:17:2:
>   warning: left shift count >= width of type
>         if (!(word & (~0ul << 32))) {
>                         ^
>
> In fact, U-Boot itself as EFI payload is running in 32-bit mode.
> So BITS_PER_LONG needs to still be 32, but EFI status codes are
> 64-bit when booting from 64-bit EFI. Introduce EFI_BITS_PER_LONG
> to bridge those status codes with U-Boot's BITS_PER_LONG.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>
> ---
>
> Changes in v2:
> - Rework the patch to fix 64-bit payload boot issue
>
>  arch/x86/include/asm/types.h |  4 ----
>  include/efi.h                | 32 ++++++++++++++++++++------------
>  2 files changed, 20 insertions(+), 16 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>