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From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] ELF_RELOC causes strange I-cache issues
Date: Thu, 21 Oct 2010 13:52:17 +0200	[thread overview]
Message-ID: <4CC02971.10704@denx.de> (raw)
In-Reply-To: <20101021114546.1ADE01359B7@gemini.denx.de>

On 10/21/2010 01:45 PM, Wolfgang Denk wrote:
> Dear Albert,
> 
> In message <20101021113605.A85D61359B7@gemini.denx.de> I wrote:
>>
>> With this patch all problems go away, too:
> 
> Don't count your chickens before they are hatched.
> 
> After 8 transfers of 65536 it hung again...
> 
> So not solved, but much, much better...

I have tested too, and I cannot see rather a real improvement. Sometimes
it hangs after the first attempt, sometimes I need some time (but as
Wolfgang reports, only a few..) to get into trouble.

I can confirm Heiko's test and the board works flawlessy flushing the
cache inside the handshake() routine. Howeever, it seems this solves
issue with usb, but maybe we get the same strange behavior with another
driver...

Best regards,
Stefano

-- 
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DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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  reply	other threads:[~2010-10-21 11:52 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-20 18:49 [U-Boot] ELF_RELOC causes strange I-cache issues Wolfgang Denk
2010-10-20 20:12 ` Albert ARIBAUD
2010-10-20 20:54   ` Wolfgang Denk
2010-10-20 22:20     ` Joakim Tjernlund
2010-10-21  9:18     ` Albert Aribaud
2010-10-21  9:51       ` Heiko Schocher
2010-10-21 10:11         ` Reinhard Meyer
2010-10-21 10:34           ` Albert ARIBAUD
2010-10-21 10:49             ` Reinhard Meyer
2010-10-21 10:50             ` Heiko Schocher
2010-10-21 11:03             ` Stefan Roese
2010-10-21 10:54           ` Wolfgang Denk
2010-10-21 10:56         ` Albert ARIBAUD
2010-10-21 11:36           ` Wolfgang Denk
2010-10-21 11:45             ` Wolfgang Denk
2010-10-21 11:52               ` Stefano Babic [this message]
2010-10-21 11:53           ` Wolfgang Denk
2010-10-21 12:00           ` Wolfgang Denk
2010-10-21 12:53             ` Albert ARIBAUD
2010-10-21 11:28         ` Joakim Tjernlund
2010-10-21 10:05       ` Wolfgang Denk
2010-10-22 12:23 ` [U-Boot] [PATCH] ehci-hcd.c: fix hanging under higher load Wolfgang Denk
2010-10-22 19:51   ` Remy Bohmer
2010-10-22 12:26 ` [U-Boot] ELF_RELOC causes strange I-cache issues Wolfgang Denk
2010-10-22 13:19   ` Albert ARIBAUD
2010-10-22 13:28     ` Wolfgang Denk

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