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From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] [patch] Fix NC650 nand support
Date: Mon, 23 Apr 2007 15:00:17 +0200	[thread overview]
Message-ID: <m2zm4z2qla.fsf@sowhat.denx.de> (raw)
In-Reply-To: <1177285951.26489.5.camel@localhost.localdomain> (Zang Roy-r's message of "23 Apr 2007 07\:52\:31 +0800")

Hi Roy,

> On Fri, 2007-04-20 at 23:49, Wolfgang Denk wrote:
>> In message <m2irbr3wou.fsf@sowhat.denx.de> you wrote:
>
>> [snip]
>> > while doing this noticed that the whole fixup only works because we
>> > have a maximum of one fixup entry (./drivers/tsi108_pci.c, I cannot
>> > find any user of addr_probe anywhere).  
> Tsi108/9 pci config read will introduce a exception. I do not see other
> exception after code relocation.
>
>> Otherwise the sorting of the
>> > table is missing and thus the searching with a bisecting algorithm
>> > will not work as is.
> Why?

As I said, the search algorithm only works with a sorted table - just
what "sort_main_extable" does in Linux.  To be honest I did not look
too hard but I couldn't find anything similar in U-Boot so the table
will be unsorted and thus very likely fail if more entries are added.

So either sorting the table at some point or instead doing a linear
search would fix the problems.

Cheers
  Detlev

-- 
It's very important  that you sleep because that's  when your brain is
garbage  collecting.  And a  dream is  if you  are interrupted  in the
middle and have junk left in the registers.
                                          -- Gerald Sussman
--
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk
Office: Kirchenstr. 5, D-82194 Groebenzell, Germany +49 8142 66989 40

  reply	other threads:[~2007-04-23 13:00 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-20 10:07 [U-Boot-Users] [patch] Fix NC650 nand support Detlev Zundel
2007-04-20 11:38 ` Stefan Roese
2007-04-20 13:53   ` Wolfgang Denk
2007-04-20 15:14     ` Detlev Zundel
2007-04-20 15:49       ` Wolfgang Denk
2007-04-22 23:52         ` Zang Roy-r61911
2007-04-23 13:00           ` Detlev Zundel [this message]
2007-04-24  6:32             ` Zang Roy-r61911

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