From: Timur Tabi <timur@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] 83xx address translation: is it really necessary?
Date: Mon, 07 Aug 2006 09:53:43 -0500 [thread overview]
Message-ID: <44D753F7.6070305@freescale.com> (raw)
I'm adding support for a new 83xx board, the 8349E-mITX. For some reason, turning on address translation causes the board to halt.
enable_addr_trans:
/* enable address translation */
mfmsr r5
ori r5, r5, (MSR_IR | MSR_DR)
mtmsr r5
isync
blr
As soon as the mtmsr is executed, everything stops.
So for now, I've disabled the call to enable_addr_trans(). I know I need to fix this bug, but my question is: why do we enable address translation at all? My U-Boot works perfectly fine with it turned off, so what's the point? U-Boot 1.1.3 didn't have this "feature".
--
Timur Tabi
Linux Kernel Developer @ Freescale
next reply other threads:[~2006-08-07 14:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-07 14:53 Timur Tabi [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-08-07 15:28 [U-Boot-Users] 83xx address translation: is it really necessary? Jeff Mann
2006-08-07 20:34 ` Kumar Gala
2006-08-07 20:39 ` Timur Tabi
2006-08-07 20:52 ` Kumar Gala
2006-08-07 22:44 ` Timur Tabi
2006-08-07 23:29 ` Kumar Gala
2006-08-08 21:45 ` Timur Tabi
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