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This adds a driver which matches to a "barebox,storage-by-uuid"
compatible node. The driver looks for a storage device matching the
given UUID and when found registers a new cdev for the device.
This driver solved a very specific problem. On EFI the storage devices
are not connected to any device tree node. barebox-state however expects
a node to use as its backend. The obvious solution would be to create
a partition with a specific partuuid and use that for state, in our
special usecase though the storage device is partitioned with a MBR
which doesn't have any space left to create a new partition. As this
driver parses the of partition binding we can use that to create
a partition in an unallocated are of the disk which is then used for
state.
This driver has the problem that it depends on storage devices which
are not described in the device tree. This means it cannot work with
deep probe. This is not a problem on EFI though. It's a special purpose
driver, it's not recommended for general use.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20220207094953.949868-8-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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With the integration of the ACPI WDAT watchdog driver, we now have an
actually useful user of the ACPI bus in tree, so the test driver
serves no purpose anymore. Drop it.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220110104831.3149574-1-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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"GPL-2.0-only" was introduced in SPDX 2.0, and the old identifier
"GPL-2.0" is now considered deprecated; see <https://spdx.org/licenses>.
Fixes: 28f4a6a4df76f0f1581d (2021-10-30, "drivers: add missing SPDX-License-Identifier")
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
Link: https://lore.barebox.org/20211117113851.2022669-2-rhi@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the suitable SPDX-License-Identifier to all files in drivers/
that previously lacked one.
To aid manual inspection, following heuristics can be used:
* No changes outside of comments/whitespace:
git show -U0 HEAD | rg -v '^(@@|diff|index)|[-+]([-+]|//|#|[\s/]\*)'
* -or-later come in pairs:
git show --inter-hunk-context=19 HEAD | \
perl -0777 -F'/^@/gm' -ne 'for (@F) { @m = /later/g; print if @m & 1 }'
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20211030175632.2276077-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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There will likely not be a use case for having neural network
accelerator driver support within barebox. Still the driver requires a
reset sequence, which is not yet supported by vendor kernel's or known
forks. Until Linux can take care of this itself, add a simple driver
that gets some of the peripherals out of reset.
There also enables unconditionally some of the clocks that the vendor
kernel may depend on. Hopefully, in future, the whole driver can be
dropped when the kernel starts to do clock and reset control itself.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210619045055.779-29-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We have a bus driver for ACPI, but no drivers yet. Add a simple (rather
useless) driver that exercises the API, which future drivers can be
based on. As soon as we have proper ACPI drivers, this driver could be
removed again.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add a driver to expose U-Boot environment variable data as a single
mmap-able device, hiding various low-level details such as:
* Preamble format differences
* Read/write logic in presence of redundant partition
Not very useful on its own, it is a crucial low-level plumbing needed
by filesystem driver introduced in the following commit.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Cory Tusar <cory.tusar@zii.aero>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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With all other code gone from commands/mem.c, move it into
driver/misc, where it fits better. While at it, expose it directly via
a Kconfig options instead of relying on CONFIG_COMPILE_MEMORY
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds a framework to describe, access, store and restore a set of
variables. A state variable set can be fully described in a devicetree node.
This node could be part of the regular devicetree blob or it could be an extra
devicetree solely for the state. The state variable set contains variables of
different types and a place to store the variable set.
For more information see:
Documentation/devicetree/bindings/barebox/barebox,state.rst
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Wjatscheslaw Stoljarski <wjatscheslaw.stoljarski@kiwigrid.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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