[PATCH v6 0/6] Introduce UBI block device

[Alexey Romanov]

Hello!

This series adds support for the UBI block device, which
allows to read/write data block by block. For example,
it can now be used for BCB or Android AB command:

  $ bcb load ubi 0 part_name

Tested only on SPI NAND, so bind is made only for
SPI NAND drivers. Can be used with mtdblock device [1].

---

Changes V1 -> V2 [2]:

 - Rebased over mtdblock v2 patchset [3].
 - Compile UBI partitions support only if CONFIG_BLK option
   is enabled.

Changes V2 -> V3 [4]:

 - Fix build warnings: use LBAF printf format string for lbaint_t types.

Changes V3 -> V4 [5]:

 - Rebased over u-boot/master.
 - Fix build errors and warnings if CONFIG_BLK isn't enabled.
 - Fix failed tests in cases is ubiblock device isn't binded.

Changes V4 -> V5 [6]:

  - Rebased over u-boot/master.
  - Fix build errors when CONFIG_MTD and CONFIG_MTD_UBI isn't enabled.
  - Use auto blk device devnum generation when call
    blk_create_devicef (pass -1 parameter instead of dev_seq(dev)).

Changes V5 -> V6 [7]:

  - Rebased over u-boot/master.
  - Introduce CONFIG_UBI_BLOCK which is disabled by default.
  - Fix undefined reference to `__aeabi_ldivmod' compiler error for 32-bit ARM targets.

Links:

  [1] https://lore.kernel.org/all/20240227100441.1811047-1-avromanov@salutedevices.com/
  [2] https://lore.kernel.org/all/20240306134906.1179285-1-avromanov@salutedevices.com/
  [3] https://lore.kernel.org/all/20240307130726.1582487-1-avromanov@salutedevices.com/
  [4] https://lore.kernel.org/all/20240325144148.3738195-1-avromanov@salutedevices.com/
  [5] https://lore.kernel.org/all/20240524111319.3512009-1-avromanov@salutedevices.com/
  [6] https://lore.kernel.org/all/20240603155740.1840571-1-avromanov@salutedevices.com/
  [7] https://lore.kernel.org/all/20240626104527.2811828-1-avromanov@salutedevices.com/

Alexey Romanov (6):
  ubi: allow to read from volume with offset
  ubi: allow to write to volume with offset
  drivers: introduce UBI block abstraction
  disk: don't try search for partition type if already set
  disk: support UBI partitions
  spinand: bind UBI block

 cmd/ubi.c                   |  78 ++++++++++++++++++++--
 disk/part.c                 |   7 ++
 drivers/block/blk-uclass.c  |   1 +
 drivers/mtd/nand/spi/core.c |  12 +++-
 drivers/mtd/ubi/Kconfig     |   7 ++
 drivers/mtd/ubi/Makefile    |   1 +
 drivers/mtd/ubi/block.c     | 130 ++++++++++++++++++++++++++++++++++++
 drivers/mtd/ubi/part.c      |  99 +++++++++++++++++++++++++++
 env/ubi.c                   |  16 ++---
 include/part.h              |   2 +
 include/ubi_uboot.h         |  13 +++-
 11 files changed, 348 insertions(+), 18 deletions(-)
 create mode 100644 drivers/mtd/ubi/block.c
 create mode 100644 drivers/mtd/ubi/part.c

-- 
2.34.1