From: Angelos Manousarides <amanous@inaccessnetworks.com>
To: Linux MTD mailing list <linux-mtd@lists.infradead.org>
Subject: MTD device with multiple regions & JFFS2
Date: Fri, 30 Jun 2006 15:31:36 +0300 [thread overview]
Message-ID: <44A519A8.4030800@inaccessnetworks.com> (raw)
I have a system with intel P30 flash chips, which have 2 erase regions.
The system can have either 2 flash chips in one bank or 4 flash chips in
2 banks. I am using mtdconcat to join the two devices and have unified
access. I have a problem with the multiple erase sizes. The chips are of
"top" type which means that the last sectors have a smaller block size
than the others.
The code in mtdconcat does transfer the region info to the resulting
device, I see a mtd device with 2 (or 4 regions). The partitioning code
however does not. "numeraseregions" is 0 and "erasesize" is only used.
While I was trying to fix the code in mtdpart.c, I discovered that this
is futile. The JFFS2 code does not seem to support this as well. Only
the "erasesize" is used there also. Does that mean that I cannot have a
JFFS2 filesystem that spans across multiple block size flash space?
--
Angelos Manousaridis
next reply other threads:[~2006-06-30 12:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-30 12:31 Angelos Manousarides [this message]
2006-06-30 13:13 ` MTD device with multiple regions & JFFS2 Josh Boyer
2006-06-30 13:56 ` Angelos Manousarides
2006-06-30 14:36 ` Josh Boyer
2006-07-04 12:22 ` Angelos Manousarides
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