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From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] hi, I could not understand the memsize.c, somebody help me?
Date: Fri, 24 Jul 2009 17:13:01 +0200	[thread overview]
Message-ID: <m2skgmktc2.fsf@ohwell.denx.de> (raw)
In-Reply-To: <1BD5CFC378ED0946B688E0C9BA2EF09512A271@zin33exm24.fsl.freescale.net> (Aggrwal Poonam-B's message of "Fri, 24 Jul 2009 20:01:40 +0530")

Hi Aggrwal,

>> > I could not understand common/memsize.c, how it works?
>> 
>> It writes markers at specific memory locations and then reads 
>> these back. The algorithm is chosen to be fast but still to 
>> be able to detect mirrored address ranges and other memory errors.
> Suppose I configure MAX_MEM)SIZE as 1Gig and the actual memory on the
> board is 512M, is this function supposed to return 512M?

That's the spirit, indeed.

Cheers
  Detlev

-- 
(define Y (lambda (f)
	    ((lambda (g) (f (lambda (x) ((g g) x))))
	     (lambda (g) (f (lambda (x) ((g g) x)))))))
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

  reply	other threads:[~2009-07-24 15:13 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-25  3:14 [U-Boot] hi, I could not understand the memsize.c, somebody help me? IaMaPlAyEr
2009-06-25 12:56 ` Detlev Zundel
2009-06-29  8:54   ` IaMaPlAyEr
2009-06-29 11:54     ` Detlev Zundel
2009-06-30  2:53       ` IaMaPlAyEr
2009-06-30 13:50         ` Detlev Zundel
2009-07-24  6:11 ` Wolfgang Denk
2009-07-24 14:31   ` Aggrwal Poonam-B10812
2009-07-24 15:13     ` Detlev Zundel [this message]
2009-07-24 15:21     ` Kenneth Johansson

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