[PATCH v3 00/10] Introduce NVIDIA Tegra Partition Table

[Dmitry Osipenko]

Some NVIDIA Tegra devices have GPT entry at a wrong location and others may
even not have it at all. So either a custom workaround for GPT parsing or
TegraPT support is needed for those devices if we want to support them in
upstream kernel. The former solution was already rejected [1], let's try
the latter.

[1] https://patchwork.ozlabs.org/patch/1240809/

Big thanks to everyone who helped with figuring out the TegraPT format!

Changelog:

v3: - Fixed "BUG: KASAN: slab-out-of-bounds in tegra_partition". Thanks to
      Peter Geis for noticing the problem.

    - The MMC boot partitions scanning is now opt-in. See this patch:

        mmc: block: Support partition-table scanning on boot partitions

    - The found MMC boot partitions won't be assigned to the MMC boot
      block device ever due to the new GENHD_FL_PART_SCAN_ONCE flag.

      This makes us to ensure that the old behavior of the MMC core is
      preserved for a non-Tegra MMC-block users.

    New patches in v3:

        block: Introduce GENHD_FL_PART_SCAN_ONCE
        mmc: sdhci-tegra: Enable boot partitions scanning on Tegra20 and Tegra30

v2: - Addressed v1 review comments from Stephen Warren by using BIT for
      locating BCT position in IRAM.

    - Added more validations to the TegraPT parser: partition type is
      verified, eMMC instance ID is verified.

    - TegraPT parser now doesn't touch any devices other than eMMC.

    - EKS (encrypted keys) partition is blacklisted now.

    - Implemented eMMC boot partitions scanning. These new patches are
      added in a result:

        mmc: block: Add mmc_bdev_to_part_type() helper
        mmc: block: Add mmc_bdev_to_area_type() helper
        mmc: block: Add MMC_QUIRK_RESCAN_MAIN_BLKDEV
        mmc: block: Enable partition-table scanning for boot partitions
        partitions/tegra: Implement eMMC boot partitions scanning

Dmitry Osipenko (10):
  mmc: core: Add raw_boot_mult field to mmc_ext_csd
  mmc: block: Add mmc_bdev_to_card() helper
  partitions: Introduce NVIDIA Tegra Partition Table
  block: Introduce GENHD_FL_PART_SCAN_ONCE
  mmc: block: Add mmc_bdev_to_part_type() helper
  mmc: block: Add mmc_bdev_to_area_type() helper
  mmc: block: Add MMC_QUIRK_RESCAN_MAIN_BLKDEV
  mmc: block: Support partition-table scanning on boot partitions
  mmc: sdhci-tegra: Enable boot partitions scanning on Tegra20 and
    Tegra30
  partitions/tegra: Implement eMMC boot partitions scanning

 arch/arm/mach-tegra/tegra.c    |  54 +++
 block/genhd.c                  |   2 +-
 block/partition-generic.c      |  13 +-
 block/partitions/Kconfig       |  10 +
 block/partitions/Makefile      |   1 +
 block/partitions/check.c       |   4 +
 block/partitions/tegra.c       | 612 +++++++++++++++++++++++++++++++++
 block/partitions/tegra.h       |   8 +
 drivers/mmc/core/block.c       | 104 ++++++
 drivers/mmc/core/mmc.c         |   2 +
 drivers/mmc/host/sdhci-tegra.c |  10 +-
 include/linux/genhd.h          |  12 +
 include/linux/mmc/blkdev.h     |  15 +
 include/linux/mmc/card.h       |   2 +
 include/linux/mmc/host.h       |   2 +
 include/soc/tegra/bootdata.h   |  46 +++
 include/soc/tegra/common.h     |   9 +
 include/soc/tegra/partition.h  |  91 +++++
 18 files changed, 993 insertions(+), 4 deletions(-)
 create mode 100644 block/partitions/tegra.c
 create mode 100644 block/partitions/tegra.h
 create mode 100644 include/linux/mmc/blkdev.h
 create mode 100644 include/soc/tegra/bootdata.h
 create mode 100644 include/soc/tegra/partition.h

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2.25.1