[v4,0/3] Support EFI partition on NVIDIA Tegra devices

Message

Dmitry Osipenko Aug. 17, 2021, 1:36 a.m. UTC

This series adds the most minimal EFI partition support for NVIDIA Tegra
consumer devices, like Android tablets and game consoles, making theirs
EMMC accessible out-of-the-box using downstream bootloader and mainline
Linux kernel.  EMMC now works on Acer A500 tablet and Ouya game console
that are already well supported in mainline and internal storage is the
only biggest thing left to support.

Changelog:

v4: - Rebased on top of recent linux-next.

v3: - Removed unnecessary v1 hunk that was left by accident in efi.c of v2.

v2: - This is continuation of [1] where Davidlohr Bueso suggested that it
      should be better to avoid supporting in mainline the custom gpt_sector
      kernel cmdline parameter that downstream Android kernels use.  We can
      do this for the devices that are already mainlined, so I dropped the
      cmdline from the v2 and left only the variant with a fixed GPT address.

[1] https://lore.kernel.org/linux-efi/[e-mail]/T/

Dmitry Osipenko (3):
  mmc: core: Add raw_boot_mult field to mmc_ext_csd
  mmc: block: Add mmc_bdev_to_card() helper
  partitions/efi: Support NVIDIA Tegra devices

 block/partitions/Kconfig   |  8 ++++
 block/partitions/Makefile  |  1 +
 block/partitions/check.h   |  2 +
 block/partitions/core.c    |  3 ++
 block/partitions/efi.c     |  9 +++++
 block/partitions/tegra.c   | 75 ++++++++++++++++++++++++++++++++++++++
 drivers/mmc/core/block.c   | 15 ++++++++
 drivers/mmc/core/mmc.c     |  2 +
 include/linux/mmc/blkdev.h | 13 +++++++
 include/linux/mmc/card.h   |  1 +
 10 files changed, 129 insertions(+)
 create mode 100644 block/partitions/tegra.c
 create mode 100644 include/linux/mmc/blkdev.h