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From: | Jean-Hugues Deschenes |
Subject: | [Qemu-devel] Re: [PATCH 0/1] nand: Support random data reads. |
Date: | Tue, 12 Jan 2010 10:35:22 -0500 |
User-agent: | Thunderbird 2.0.0.22 (X11/20090625) |
Edgar E. Iglesias wrote:
As promised this is a resend of a patch I posted 2008-12-12.
Thanks.
At some point linux MTD started using random data reads and my NAND boards stopped working. This patch fixed the issue. I received a comment regarding sequential reads that cross page boundaries. Those won't work but they don't work without the patch either so IMO that can be addressed with follow-up patches.
I share you opinion.
For what it's worth, I have tried this on an ARM-based guest running Linux and it fixed my problem. Note that this (emulated) board integrates a fairly evolved NAND flash controller that takes over most flash device operations. The accesses made to the emulated NAND flash device are then not necessarily the same as would have been done by the stock MTD subsystem.Would be great if someone with access to guests for other NAND boards could try this out. Even better with something else than linux guests.
Also tested with u-boot integrating a dumbed-down version of the aforementioned driver.
jh
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