From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] ASM code for UART initialization
Date: Thu, 06 Jun 2013 12:04:21 +0200 [thread overview]
Message-ID: <20130606100421.18BC2382FC3@gemini.denx.de> (raw)
In-Reply-To: <51B05614.8070505@googlemail.com>
Dear Andr? Schaller,
In message <51B05614.8070505@googlemail.com> you wrote:
>
> could someone support me with developing ASM code for initializing UART
> interface on OMAP4460 to send some bytes over the wire at a very early
> stage of booting x-loader? The code needs to be executed in start.S.
Why would you not just use C code?
> Is it possible to use existing C code and use the generated assembly
> from gcc as the actual code or does it need major modifications to be
> executed in start.S?
It should be possible - but you should ask yourself what you then
prevents from using C code instead?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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who really run organizations are usually found several levels down,
where it's still possible to get things done.
- Terry Pratchett, _Small Gods_
prev parent reply other threads:[~2013-06-06 10:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-06 9:27 [U-Boot] ASM code for UART initialization André Schaller
2013-06-06 10:04 ` Wolfgang Denk [this message]
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