From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] U-boot running on DDR fails to detect the CFI compliant flash
Date: Tue, 19 Jan 2010 17:39:42 +0100 [thread overview]
Message-ID: <201001191739.42817.sr@denx.de> (raw)
In-Reply-To: <b9c1f3ac1001190822w2869b579h2ad94603e213ffd0@mail.gmail.com>
On Tuesday 19 January 2010 17:22:33 prakash bedge wrote:
> What I find is *VERY* helpful when trying to understand flash control
> issues is to *manually* do the QRY write sequence (see your flash data
> sheet) by using memory write/read commands from the u-boot command prompt
> I tested the same using "mw" and "md" commands from uboot prompt for read
> CFI query command. But test failed.
>
> Log details:
> mw 0xfc000000 0xf0
> mw 0xfc000055 0x98
> md 0xfc000010
Please make sure to use the byte commands instead:
=> mw.b 0xfc000000 0xf0
=> mw.b 0xfc000055 0x98
=> md.b 0xfc000010
Otherwise you will access the FLASH 32bit wise. Please re-check with this
version.
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
next prev parent reply other threads:[~2010-01-19 16:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-15 13:23 [U-Boot] U-boot running on DDR fails to detect the CFI compliant flash prakash bedge
2010-01-18 8:45 ` Stefan Roese
2010-01-19 6:24 ` prakash bedge
2010-01-19 13:49 ` Stefan Roese
2010-01-19 13:58 ` Jerry Van Baren
2010-01-19 14:19 ` Wolfgang Denk
2010-01-19 16:22 ` prakash bedge
2010-01-19 16:39 ` Stefan Roese [this message]
2010-01-19 16:44 ` Albert ARIBAUD
2010-01-20 9:44 ` prakash bedge
2010-01-20 13:05 ` Jerry Van Baren
2010-01-21 14:23 ` prakash bedge
2012-02-15 8:14 ` Francisco
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