[PATCH v2 0/8] Introduce NVIDIA Tegra Partition Tablex

Dmitry Osipenko
2020-03-06T02:13:40Z

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:

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 (8):
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
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

arch/arm/mach-tegra/tegra.c | 54 +++
block/partitions/Kconfig | 9 +
block/partitions/Makefile | 1 +
block/partitions/check.c | 4 +
block/partitions/tegra.c | 608 ++++++++++++++++++++++++++++++++++
block/partitions/tegra.h | 83 +++++
drivers/mmc/core/block.c | 85 ++++-
drivers/mmc/core/mmc.c | 2 +
include/linux/mmc/blkdev.h | 15 +
include/linux/mmc/card.h | 2 +
include/soc/tegra/bootdata.h | 46 +++
include/soc/tegra/common.h | 9 +
include/soc/tegra/partition.h | 18 +
13 files changed, 934 insertions(+), 2 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