From: Michael Schwingen <rincewind@discworld.dascon.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Fixing IXP42x boards - some general questions
Date: Thu, 23 Dec 2010 21:17:53 +0100 [thread overview]
Message-ID: <4D13AE71.30703@discworld.dascon.de> (raw)
In-Reply-To: <4D139929.5000700@free.fr>
Am 12/23/2010 07:47 PM, schrieb Albert ARIBAUD:
> Le 23/12/2010 19:25, Michael Schwingen a ?crit :
>
>> OK. It seems the interrupt code is more broken than I thought - the
>> udelay implementation relies on a variable that is set *before*
>> relocation - in BSS.
> And the non-interrupt code does not?
No. After the rewrite, the code does delay-to-timer-tic conversion and
uses the timebase counter in the IXP (which always counts up, with a
fixed rate, and has an overflow flag) to do the timing.
cu
Michael
prev parent reply other threads:[~2010-12-23 20:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-23 9:33 [U-Boot] Fixing IXP42x boards - some general questions Michael Schwingen
2010-12-23 10:10 ` Wolfgang Denk
2010-12-23 10:55 ` Marek Vasut
2010-12-23 15:13 ` Michael Schwingen
2010-12-23 12:23 ` Michael Schwingen
2010-12-23 10:20 ` Albert ARIBAUD
2010-12-23 10:39 ` Michael Schwingen
2010-12-23 11:28 ` Albert ARIBAUD
2010-12-23 11:57 ` Michael Schwingen
2010-12-23 18:25 ` Michael Schwingen
2010-12-23 18:47 ` Albert ARIBAUD
2010-12-23 20:17 ` Michael Schwingen [this message]
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