linux-kernel - [PATCH v2 0/4] mtd: rawnand: Support bad block markers in first, second or last page

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Message-ID: <20190122112258.20042-1-frieder.schrempf@kontron.de>
Date:   Tue, 22 Jan 2019 11:23:23 +0000
From:   Schrempf Frieder <frieder.schrempf@...tron.de>
To:     "boris.brezillon@...tlin.com" <boris.brezillon@...tlin.com>,
        "miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>,
        "richard@....at" <richard@....at>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "Schrempf Frieder" <frieder.schrempf@...tron.de>
Subject: [PATCH v2 0/4] mtd: rawnand: Support bad block markers in first,
 second or last page

From: Frieder Schrempf <frieder.schrempf@...tron.de>

Currently supported bad block marker positions within the block are:
* in first page only
* in last page only
* in first or second page

Some ESMT NANDs are known to have been shipped by the manufacturer
with bad block markers in the first or last page, instead of the
first or second page.

Also the datasheets for Cypress/Spansion/AMD NANDs claim that the
first, second *and* last page needs to be checked.

Therefore we make it possible to set NAND_BBT_SCAN2NDPAGE and
NAND_BBT_SCANLASTPAGE at the same time to scan/set all three pages.

This series also contains patches for AMD/Spansion/Cypress and ESMT
chips to enable both flags at the same time.
---
Changes in v2:
==============
* Rebase on 5.0-rc1
* Add patch to move bad block marker position info to a common place and
  rename/prepare existing flags
* improve/rename function nand_bbm_get_next_page() to use new flags
---
Frieder Schrempf (4):
  mtd: nand: Always store info about bad block markers in chip struct
  mtd: rawnand: Support bad block markers in first, second or last page
  mtd: rawnand: ESMT: Also use the last page for bad block markers
  mtd: rawnand: AMD: Also use the last page for bad block markers

 drivers/mtd/nand/onenand/onenand_base.c |  2 +-
 drivers/mtd/nand/onenand/onenand_bbt.c  |  2 +-
 drivers/mtd/nand/raw/internals.h        |  1 +
 drivers/mtd/nand/raw/nand_amd.c         |  8 +++-
 drivers/mtd/nand/raw/nand_base.c        | 64 +++++++++++++++++--------
 drivers/mtd/nand/raw/nand_bbt.c         | 28 +++++------
 drivers/mtd/nand/raw/nand_esmt.c        |  9 +++-
 drivers/mtd/nand/raw/nand_hynix.c       |  4 +-
 drivers/mtd/nand/raw/nand_macronix.c    |  2 +-
 drivers/mtd/nand/raw/nand_micron.c      |  2 +-
 drivers/mtd/nand/raw/nand_samsung.c     |  4 +-
 drivers/mtd/nand/raw/nand_toshiba.c     |  2 +-
 drivers/mtd/nand/raw/sh_flctl.c         |  4 +-
 include/linux/mtd/bbm.h                 | 14 +-----
 include/linux/mtd/rawnand.h             | 16 +++++++
 15 files changed, 100 insertions(+), 62 deletions(-)

-- 
2.17.1