From: Rob Herring <robherring2@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Undefined results when building highbank board
Date: Thu, 26 Apr 2012 07:54:55 -0500 [thread overview]
Message-ID: <4F99459F.4060500@gmail.com> (raw)
In-Reply-To: <20120426120301.55C2D200246@gemini.denx.de>
On 04/26/2012 07:03 AM, Wolfgang Denk wrote:
> Dear Rob,
>
> arch/arm/cpu/armv7/highbank/config.mk contains this setting:
>
> PLATFORM_CPPFLAGS += -march=armv7-a
>
> This results in code bueing built with the follwoing compiler options:
>
> ... -march=armv5 -march=armv7-a ...
>
> This is a bad idea - dependign on tool chain used, this may result in
> compiler errors ("error: bad value (armv7-a) for -march= switch"), or
> undefined behaviour, as it is not clear which option is used by the
> compiler.
>
> Can you please provide a fix? Thanks!
The issue is I require a wfi assembly instruction for reset, so I would
have to hard code the machine code to work on all compilers.
Rob
>
> Best regards,
>
> Wolfgang Denk
>
next prev parent reply other threads:[~2012-04-26 12:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 12:03 [U-Boot] Undefined results when building highbank board Wolfgang Denk
2012-04-26 12:54 ` Rob Herring [this message]
2012-04-26 20:33 ` Wolfgang Denk
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