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From: "Eric Bénard" <eric@eukrea.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 4/4] ARM: tqma53: call SoC lowlevel function early
Date: Wed, 10 Apr 2013 21:37:10 +0200	[thread overview]
Message-ID: <20130410213710.4ed13edf@e6520eb> (raw)
In-Reply-To: <1364972980-32527-5-git-send-email-s.hauer@pengutronix.de>

Hi Sacha,

Le Wed,  3 Apr 2013 09:09:40 +0200,
Sascha Hauer <s.hauer@pengutronix.de> a écrit :

> With CONFIG_MMU_EARLY enabled the board does not survive the call
> to imx53_init_lowlevel(). This should not happen, but the reasons
> are currently unknown. This works on other boards like the i.MX53
> QSB.
> This patch moves the call to imx53_init_lowlevel to
> barebox_arm_reset_vector() which is executed with MMU disabled.
> 
FWIW : on the QSB I also met this kind of problem :
- when the board is configured for serial download boot (bootmode 0
  & 1 = 1) : barebox fails to execute if MMU is enabled
- when the board is configured for usual SDCard boot and the SDCard is
  not inserted, the bootrom falls back to serial download mode and
  then barebox runs fine even with MMU enabled.

Best regards,
Eric

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      reply	other threads:[~2013-04-10 19:37 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-03  7:09 [PATCH] i.MX53 lowlevel work Sascha Hauer
2013-04-03  7:09 ` [PATCH 1/4] ARM: i.MX53: Fix pll216 setup Sascha Hauer
2013-04-03  7:09 ` [PATCH 2/4] ARM: i.MX53: split lowlevel function into early/nonearly version Sascha Hauer
2013-04-03  7:09 ` [PATCH 3/4] ARM: tx53: use early lowlevel function Sascha Hauer
2013-04-03  7:09 ` [PATCH 4/4] ARM: tqma53: call SoC lowlevel function early Sascha Hauer
2013-04-10 19:37   ` Eric Bénard [this message]

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