24.03.2020 23:52, Michał Mirosław пишет:

On Tue, Mar 24, 2020 at 02:22:34AM +0300, Dmitry Osipenko wrote:

quoted

24.03.2020 00:35, Michał Mirosław пишет:

quoted

On Mon, Mar 23, 2020 at 10:59:52PM +0300, Dmitry Osipenko wrote:

quoted

23.03.2020 22:17, Michał Mirosław пишет:

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On Mon, Mar 23, 2020 at 07:34:24PM +0300, Dmitry Osipenko wrote:

quoted

All NVIDIA Tegra devices use a special partition table format for the
internal storage partitioning. Most of Tegra devices have GPT partition
in addition to TegraPT, but some older Android consumer-grade devices do
not or GPT is placed in a wrong sector, and thus, the TegraPT is needed
in order to support these devices properly in the upstream kernel. This
patch adds support for NVIDIA Tegra Partition Table format that is used
at least by all NVIDIA Tegra20 and Tegra30 devices.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
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 arch/arm/mach-tegra/tegra.c   |  54 ++++

[...]

Please split off this part and make the information available to
userspace (pt_addr + pt_size) if found. This would make it easier
to support use the partition table later in initrd instead.

Please clarify what do you mean by "use the partition table later in
initrd instead".

Configure device-mapper to span eMMC boot+data partitions and then ask
(modified) kpartx to partition the resulting device. All before rootfs
is mounted and switched to in initrd.

The whole point of this series is to make partition handling generic in
the kernel, avoiding the need to customize anything.

Yes, but at least for diagnostic purposes, it would be nice to have the
values from BCT exposed somewhere in /sys.

It could be useful indeed, but for now I'm not sure that it should be a
part of this patchset. I'll keep it mind, thank you for the suggestion.