From: "Alexander Shiyan" <shc_work@mail.ru>
To: "Sascha Hauer" <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re[2]: Boot from SD fail after 2013.02
Date: Thu, 18 Apr 2013 21:02:52 +0400 [thread overview]
Message-ID: <1366304572.52315039@f26.mail.ru> (raw)
In-Reply-To: <20130418115918.GG1906@pengutronix.de>
> On Thu, Apr 18, 2013 at 03:06:26PM +0400, Alexander Shiyan wrote:
> >
> > So. OK, I temporary patch my board and it working now.
> > Please forget about correct memory size, it is not true.
> > Size is incorrect. Both banks are enabled and size detected as 512M.
> > I think this size is programmed by flash_header:
> > { .ptr_type = 4, .addr = 0x83fd9000, .val = 0xb2a20000, },
> > { .ptr_type = 4, .addr = 0x83fd9008, .val = 0xb2a20000, },
> >
> > After program NAND and start from NAND, size is still wrong...
> > So, what we can do it this case for proper operation? Disable second bank?
>
> When writing the autodetection code I assumed that all boards correctly
> setup the SDRAM controller. Appearently I was wrong.
>
> I suggest disabling the second chip select since it's not used on your
> board. However, I begin doubting that it was the right decision to
> depend on ram size detection.
Yes, disabling second bank is helps.
So, I repair my second board (same as first, but with real 512M of SDRAM).
Works, but of course memory is fixed at 256M. Tomorrow I will test current
2013.04 on this board since probably problem appears only on 256M-version.
Currently I think about return fixed table of memory in the board file or get
memory size by testing memory. In both cases we need to disable ESDCTL
module and now I do not know how make it better rather than simple remove
this module from Makefile.
Thanks.
---
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next prev parent reply other threads:[~2013-04-18 17:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1366188021.710900767@f16.mail.ru>
2013-04-17 10:01 ` Sascha Hauer
2013-04-17 11:40 ` Re[2]: " Alexander Shiyan
2013-04-17 12:02 ` Sascha Hauer
2013-04-17 12:19 ` Re[2]: " Alexander Shiyan
2013-04-17 12:22 ` Sascha Hauer
2013-04-18 11:06 ` Re[2]: " Alexander Shiyan
2013-04-18 11:59 ` Sascha Hauer
2013-04-18 17:02 ` Alexander Shiyan [this message]
2013-04-18 18:23 ` Sascha Hauer
2013-04-19 8:10 ` Re[2]: " Alexander Shiyan
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