From: Boris Brezillon <boris.brezillon@free-electrons.com> To: David Woodhouse <dwmw2@infradead.org>, Brian Norris <computersforpeace@gmail.com>, linux-mtd@lists.infradead.org Cc: Maxime Ripard <maxime.ripard@free-electrons.com>, Chen-Yu Tsai <wens@csie.org>, linux-sunxi@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Boris Brezillon <boris.brezillon@free-electrons.com> Subject: [PATCH v2 0/3] mtd: nand: add randomizer support Date: Wed, 2 Dec 2015 12:01:04 +0100 [thread overview] Message-ID: <1449054067-16751-1-git-send-email-boris.brezillon@free-electrons.com> (raw) Hello, This series is a proposal to add support for randomizers (either software or hardware) to NAND flash controller drivers. The last patch is the sunxi HW randomizer implementation and is just given as an example (it won't apply on the MTD tree, because it depends on other stuff not yet posted on the MTD ML, but if you want a full overview of the NAND Flash controller driver you can take a look at this series [2]). I can also provide a software implementation based on LFSR (Left Feedback Shift Register) algorithm, thought I haven't tested it yet, hence why it's not part of this series. Let me know if you're interested in this implementation. This series depends on the "per-partition ECC" series [1], because I need the randomizer seed to be different depending on the partition (for the same reason I needed ECC config to be different for each partition: the bootrom config might not fit the NAND chip requirements). I'd like to have feedback from both MTD maintainers and driver developers who might need to implement (or use) a randomizer in their system, so feel free to comment on this series. Best Regards, Boris [1] https://lkml.org/lkml/2014/2/12/627 [2] https://groups.google.com/forum/#!msg/linux-sunxi/s3lBb01I0Js/z2NoCFJ83g4J Changes since v1: - add some comments to explain how the sunxi randomizer works - fix a few minor bugs and coding style issues Boris Brezillon (3): mtd: nand: add NAND_NEED_SCRAMBLING option flag mtd: nand: add NAND_NEED_SCRAMBLING flag to the H27UCG8T2ATR-BC definition mtd: nand: sunxi: add randomizer support drivers/mtd/nand/nand_ids.c | 4 +- drivers/mtd/nand/sunxi_nand.c | 287 ++++++++++++++++++++++++++++++++++++++---- include/linux/mtd/nand.h | 6 + 3 files changed, 269 insertions(+), 28 deletions(-) -- 2.1.4
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From: boris.brezillon@free-electrons.com (Boris Brezillon) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/3] mtd: nand: add randomizer support Date: Wed, 2 Dec 2015 12:01:04 +0100 [thread overview] Message-ID: <1449054067-16751-1-git-send-email-boris.brezillon@free-electrons.com> (raw) Hello, This series is a proposal to add support for randomizers (either software or hardware) to NAND flash controller drivers. The last patch is the sunxi HW randomizer implementation and is just given as an example (it won't apply on the MTD tree, because it depends on other stuff not yet posted on the MTD ML, but if you want a full overview of the NAND Flash controller driver you can take a look at this series [2]). I can also provide a software implementation based on LFSR (Left Feedback Shift Register) algorithm, thought I haven't tested it yet, hence why it's not part of this series. Let me know if you're interested in this implementation. This series depends on the "per-partition ECC" series [1], because I need the randomizer seed to be different depending on the partition (for the same reason I needed ECC config to be different for each partition: the bootrom config might not fit the NAND chip requirements). I'd like to have feedback from both MTD maintainers and driver developers who might need to implement (or use) a randomizer in their system, so feel free to comment on this series. Best Regards, Boris [1] https://lkml.org/lkml/2014/2/12/627 [2] https://groups.google.com/forum/#!msg/linux-sunxi/s3lBb01I0Js/z2NoCFJ83g4J Changes since v1: - add some comments to explain how the sunxi randomizer works - fix a few minor bugs and coding style issues Boris Brezillon (3): mtd: nand: add NAND_NEED_SCRAMBLING option flag mtd: nand: add NAND_NEED_SCRAMBLING flag to the H27UCG8T2ATR-BC definition mtd: nand: sunxi: add randomizer support drivers/mtd/nand/nand_ids.c | 4 +- drivers/mtd/nand/sunxi_nand.c | 287 ++++++++++++++++++++++++++++++++++++++---- include/linux/mtd/nand.h | 6 + 3 files changed, 269 insertions(+), 28 deletions(-) -- 2.1.4
next reply other threads:[~2015-12-02 11:01 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-12-02 11:01 Boris Brezillon [this message] 2015-12-02 11:01 ` [PATCH v2 0/3] mtd: nand: add randomizer support Boris Brezillon 2015-12-02 11:01 ` [PATCH v2 1/3] mtd: nand: add NAND_NEED_SCRAMBLING option flag Boris Brezillon 2015-12-02 11:01 ` Boris Brezillon 2015-12-02 11:01 ` [PATCH v2 2/3] mtd: nand: add NAND_NEED_SCRAMBLING flag to the H27UCG8T2ATR-BC definition Boris Brezillon 2015-12-02 11:01 ` Boris Brezillon 2015-12-02 11:01 ` [PATCH v2 3/3] mtd: nand: sunxi: add randomizer support Boris Brezillon 2015-12-02 11:01 ` Boris Brezillon 2016-01-23 2:57 ` Brian Norris 2016-01-23 2:57 ` Brian Norris 2016-01-23 8:18 ` Boris Brezillon 2016-01-23 8:18 ` Boris Brezillon 2016-01-23 20:55 ` Brian Norris 2016-01-23 20:55 ` Brian Norris 2016-01-11 9:13 ` [PATCH v2 0/3] mtd: nand: " Boris Brezillon 2016-01-11 9:13 ` Boris Brezillon
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