dt-bindings: gpio: add GPIO_PULL_{UP,DOWN} definitions

This is required to bump stm32mp15 dts(i) files to Linux 5.19-rc6.

Signed-off-by: Johann Neuhauser <jneuhauser@dh-electronics.com>
Reviewed-by

dt-bindings: gpio: add GPIO_PULL_{UP,DOWN} definitions

This is required to bump stm32mp15 dts(i) files to Linux 5.19-rc6.

Signed-off-by: Johann Neuhauser <jneuhauser@dh-electronics.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-totalcompute: Introduce TC2

Added TC2 platform support

Signed-off-by: Rupinderjit Singh <rupinderjit.singh@arm.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Fo

plat-totalcompute: Introduce TC2

Added TC2 platform support

Signed-off-by: Rupinderjit Singh <rupinderjit.singh@arm.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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core: rng_hw: Remove __weak attribute from HW RNG functions

These function are no longer overridden by platform HW RNG drivers.
Drivers only need implement hw_get_random_bytes().

Signed-off-by: And

core: rng_hw: Remove __weak attribute from HW RNG functions

These function are no longer overridden by platform HW RNG drivers.
Drivers only need implement hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: rng_hw: Remove hw_get_random_byte()

Now that all everyone is moved over to hw_get_random_bytes()
we can remove the stub hw_get_random_byte() and the weak default
hw_get_random_bytes().

Signed

core: rng_hw: Remove hw_get_random_byte()

Now that all everyone is moved over to hw_get_random_bytes()
we can remove the stub hw_get_random_byte() and the weak default
hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-stm: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-b

plat-stm: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-rcar: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-

plat-rcar: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-k3: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by

plat-k3: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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plat-k3: Factor out sa2ul_rng_read128()

The core function is a 128bit RNG read. Factor this out into
its own function to help with the switch to hw_get_random_bytes().

Signed-off-by: Andrew Davis <

plat-k3: Factor out sa2ul_rng_read128()

The core function is a 128bit RNG read. Factor this out into
its own function to help with the switch to hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: xiphera_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

drivers: xiphera_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: hi16xx_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

S

drivers: hi16xx_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: dra7_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Sig

drivers: dra7_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

show more ...

drivers: dra7_rng: Factor out dra7_rng_read64()

The core function is a 64bit RNG read. Factor this out into
its own function to help with the switch to hw_get_random_bytes().

Signed-off-by: Andrew

drivers: dra7_rng: Factor out dra7_rng_read64()

The core function is a 64bit RNG read. Factor this out into
its own function to help with the switch to hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: dra7_rng: Use cpu_spin_lock_xsave helper function

Does the same thing, saves us a line or two.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@lina

drivers: dra7_rng: Use cpu_spin_lock_xsave helper function

Does the same thing, saves us a line or two.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: dra7_rng: Only fetch RNG base VA once

No reason to do this every time we want to get a random byte.
Fetch this once on init and keep it in a static global.

Signed-off-by: Andrew Davis <afd

drivers: dra7_rng: Only fetch RNG base VA once

No reason to do this every time we want to get a random byte.
Fetch this once on init and keep it in a static global.

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: stm32_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can s

drivers: stm32_rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: smccc_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can

drivers: smccc_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

show more ...

drivers: imx_rngb: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can si

drivers: imx_rngb: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

show more ...

drivers: se050: rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can

drivers: se050: rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

show more ...

drivers: caam: rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can s

drivers: caam: rng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

show more ...

drivers: atmel_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can

drivers: atmel_trng: Switch to hw_get_random_bytes()

hw_get_random_byte() is no longer used. The default crypto_rng_read()
calls hw_get_random_bytes() now so we do not need to override this
and can simply implement just hw_get_random_bytes().

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: rng_hw: Add dummy hw_get_random_byte()

This is only used so we can start removing hw_get_random_byte() from
platforms without causing compile errors. It is never called.

Signed-off-by: Andrew

core: rng_hw: Add dummy hw_get_random_byte()

This is only used so we can start removing hw_get_random_byte() from
platforms without causing compile errors. It is never called.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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plar: rcar: Use common crypto_rng_read() over hw_get_random_byte()

This has the same effect and removes the last user of
hw_get_random_byte() allowing us to start converting platforms
to hw_get_rand

plar: rcar: Use common crypto_rng_read() over hw_get_random_byte()

This has the same effect and removes the last user of
hw_get_random_byte() allowing us to start converting platforms
to hw_get_random_bytes() and removing hw_get_random_byte().

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: pta: Use common crypto_rng_read() over hw_get_random_byte()

This PTA is one of the only direct users of hw_get_random_byte(),
the common path is through crypto_rng_read().

This does mean in s

core: pta: Use common crypto_rng_read() over hw_get_random_byte()

This PTA is one of the only direct users of hw_get_random_byte(),
the common path is through crypto_rng_read().

This does mean in systems without a HW RNG this may go through
the software PRNG, but this path is locked out by build-time
checks on platforms that enable this PTA already.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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plat-rcar: Software PRNG should be disabled when using hardware generator

On RCAR_GEN3 platforms, a hardware random number generator is available
and the HWRNG_PTA is enabled. For this to work right

plat-rcar: Software PRNG should be disabled when using hardware generator

On RCAR_GEN3 platforms, a hardware random number generator is available
and the HWRNG_PTA is enabled. For this to work right the software PRNG
should be disabled.

Signed-off-by: Andrew Davis <afd@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>

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core: Add hw_get_random_bytes()

Currently there are two options for supporting hardware RNG, implementing
hw_get_random_byte() or overriding crypto_rng_read().

crypto_rng_read() is provided by eith

core: Add hw_get_random_bytes()

Currently there are two options for supporting hardware RNG, implementing
hw_get_random_byte() or overriding crypto_rng_read().

crypto_rng_read() is provided by either a software PRNG or by a hardware
RNG through a weak function in rng_hw.c. This weak function repeatedly
calls hw_get_random_byte(). This can be an unneeded slowdown for
platforms that fetch more than one byte of randomness per call to their
HW RNG (all of them). The usual pattern is to store these extra bytes
in a FIFO and feed them out one at a time. But since the only two callers
of hw_get_random_byte() are themselves users of more than one byte this
indirection is unnecessary. To get around this some platforms have also
started overriding crypto_rng_read() which makes the API flow a bit less
intuitive than it could be.

Plan here is that platforms only need to implement hw_get_random_bytes().
This can be called with length = 1 if we only need a single byte. But in
the more common case we get a performance boost and simplify the RNG call
flow.

To start we keep hw_get_random_byte() and have the new
hw_get_random_bytes() use it to get platform HW RNG byte at a time.
When we finish moving all plats over to hw_get_random_bytes() then
hw_get_random_byte() can be removed.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

show more ...