linux-kernel - [PATCH v2 0/3] mtd: nand: OMAP: ELM error correction support for BCH ecc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <1351667307-447-1-git-send-email-avinashphilip@ti.com>
Date:	Wed, 31 Oct 2012 12:38:24 +0530
From:	"Philip, Avinash" <avinashphilip@...com>
To:	<dwmw2@...radead.org>, <artem.bityutskiy@...ux.intel.com>,
	<afzal@...com>, <tony@...mide.com>,
	<broonie@...nsource.wolfsonmicro.com>,
	<rmk+kernel@....linux.org.uk>, <gregkh@...uxfoundation.org>
CC:	<linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<nsekhar@...com>, <gururaja.hebbar@...com>,
	<ivan.djelic@...rot.com>, "Philip, Avinash" <avinashphilip@...com>
Subject: [PATCH v2 0/3] mtd: nand: OMAP: ELM error correction support for BCH ecc

Support to use ELM as BCH 4 & 8 bit error correction module. Also performance
enhancement by adding single shot read_page and write_page functions for the
nand flashes with page size less than 4 KB.

ELM module can be used to correct errors reported by BCH 4, 8 & 16 bit
ECC scheme. For now only 4 & 8 bit support is added.

BCH 4 & 8 bit error detection support is already available in mainline
kernel and works with software error correction.

This series is based on [1] and tested with RFC: OMAP GPMC bindings
patch series

1. linux-next/20121030

Changes since v1:
	- Erased page is identified by checking byte [13/7] in read
	  ecc. To filter out bit flips in OOB area, check 0 bits in
	  the byte greater than 4.
	- GPMC ecc engine configuration moves to omap2.c NAND driver.

Philip, Avinash (3):
  mtd: nand: omap2: Update nerrors using ecc.strength
  mtd: devices: elm: Add support for ELM error correction
  mtd: nand: omap2: Support for hardware BCH error correction

 Documentation/devicetree/bindings/mtd/elm.txt |   18 +
 drivers/mtd/devices/Makefile                  |    4 +-
 drivers/mtd/devices/elm.c                     |  420 +++++++++++++++++++
 drivers/mtd/nand/omap2.c                      |  542 +++++++++++++++++++++++--
 include/linux/platform_data/elm.h             |   54 +++
 include/linux/platform_data/mtd-nand-omap2.h  |    1 +
 6 files changed, 997 insertions(+), 42 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mtd/elm.txt
 create mode 100644 drivers/mtd/devices/elm.c
 create mode 100644 include/linux/platform_data/elm.h

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/