From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bin Meng <bmeng.cn@gmail.com>
Date: Mon, 29 Aug 2016 09:47:09 +0800
Subject: [U-Boot] [PATCH v2 2/3] x86: efi: Fix EFI 64-bit payload build
	warnings
In-Reply-To: <1472114839-6792-2-git-send-email-bmeng.cn@gmail.com>
References: <1472114839-6792-1-git-send-email-bmeng.cn@gmail.com>
 <1472114839-6792-2-git-send-email-bmeng.cn@gmail.com>
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Hi Simon,

On Thu, Aug 25, 2016 at 4:47 PM, Bin Meng <bmeng.cn@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@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(-)
>

Please have a look at this.

Regards,
Bin