[U-Boot] [PATCH v10 1/6] core support of arm64

[Scott Wood]

On Tue, 2013-09-17 at 16:37 +0800, FengHua wrote:
> 
> 
> > -----原始邮件-----
> > 发件人: "Scott Wood" <scottwood at freescale.com>
> > 发送时间: 2013年9月17日 星期二
> > 收件人: fenghua at phytium.com.cn
> > 抄送: u-boot at lists.denx.de, trini at ti.com, albert.u.boot at aribaud.net, wd at denx.de, B45370 at freescale.com
> > 主题: Re: [PATCH v10 1/6] core support of arm64
> > 
> > On Mon, 2013-09-16 at 16:08 +0800, fenghua at phytium.com.cn wrote:
> > > From: David Feng <fenghua at phytium.com.cn>
> > > 
> > > Signed-off-by: David Feng <fenghua at phytium.com.cn>
> > > ---
> > 
> > You've still got CONFIG_ARMV8 in places that should be CONFIG_ARM64
> 
> I am hesitate to use CONFIG_ARM64 instead of CONFIG _ARMV8.
> I am not sure whether all the CONFIG_ARMV8 could be replaced with CONFIG_ARM64
> or CONFIG_ARMV8 and CONFIG_ARMV64 are both needed.
> I will take this into account in the next.

If it inherently relates to being 64-bit (including ABI issues), use
CONFIG_ARM64.  If it's something that is new in ARMv8 but isn't
specifically due to 64-bitness (e.g. cache stuff, if it's different from
ARMv7), and could reasonably be different in a 64-bit ARMv9, then use
CONFIG_ARMV8.

-Scott