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From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Whose responsibility is it to enable FPU?
Date: Mon, 14 Jun 2010 22:30:55 +0200	[thread overview]
Message-ID: <20100614203055.D8947B7146@gemini.denx.de> (raw)
In-Reply-To: <0016e6480e82187a72048902213a@google.com>

Dear gnemas at gmail.com,

In message <0016e6480e82187a72048902213a@google.com> you wrote:
> 
> I built u-boot for a 440EPx board derived from the sequoia configuration.
...
> U-Boot runs fine and successfully boots my operating system (Linux and  
> uClibc-based root filesystem).
...
> Then I realized that the FPU was not enabled in the MSR or in the ccr0  
> register.
> 
> Have I misconfigured something, or should I go ahead and add code to u-boot  
> to enable the FPU?

U-Boot does not need nor use the FPU, so enabling it would not help
you in any way.

Linux will do it's own settings, so this is where you need to look for
your incorrect configuration settings (incorrect CPU description in
the DT?).

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
"Confound these ancestors.... They've stolen our best ideas!"
- Ben Jonson

  parent reply	other threads:[~2010-06-14 20:30 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-14 19:02 [U-Boot] Whose responsibility is it to enable FPU? gnemas at gmail.com
2010-06-14 20:10 ` Måns Rullgård
2010-06-14 20:30 ` Wolfgang Denk [this message]
2010-06-14 21:08   ` gnemas at gmail.com
2010-06-14 21:23     ` Wolfgang Denk
2010-06-15 18:12     ` gnemas at gmail.com
2010-06-18  4:17 ` Aggrwal Poonam-B10812

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