plat-k3: drivers: Add support for TI mailbox driver

New devices like the AM62L use a mailbox to communicate with the
security firmware. Add mailbox driver here to support the mailbox
hardware.

Sign

plat-k3: drivers: Add support for TI mailbox driver

New devices like the AM62L use a mailbox to communicate with the
security firmware. Add mailbox driver here to support the mailbox
hardware.

Signed-off-by: Aniket Sarkar <a-sarkar1@ti.com>
Signed-off-by: Suhaas Joshi <s-joshi@ti.com>
Reviewed-by: Andrew Davis <afd@ti.com>

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plat-k3: drivers: Add TRNG driver support in AM62L

AM62L contains the EIP76D TRNG IP which was also present in the previous
K3 devices inside the SA2UL accelerator, so the same driver is being
re-us

plat-k3: drivers: Add TRNG driver support in AM62L

AM62L contains the EIP76D TRNG IP which was also present in the previous
K3 devices inside the SA2UL accelerator, so the same driver is being
re-used here. But the AM62L does not have SA2UL. The SoC specific
configurations are being set here for AM62L for enabling TRNG.

Signed-off-by: T Pratham <t-pratham@ti.com>
Reviewed-by: Manorit Chawdhry <m-chawdhry@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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plat-k3: drivers: Refactor SA2UL driver

The EIP76D TRNG IP being used in current K3 devices is not unique to
SA2UL/SA3UL. The RNG driver can be reused in other devices containing
the same TRNG IP ou

plat-k3: drivers: Refactor SA2UL driver

The EIP76D TRNG IP being used in current K3 devices is not unique to
SA2UL/SA3UL. The RNG driver can be reused in other devices containing
the same TRNG IP outside of SA2UL/SA3UL.

Refactor the SA2UL and RNG driver to make EIP76D TRNG driver independent
of SA2UL.

Signed-off-by: T Pratham <t-pratham@ti.com>
Reviewed-by: Manorit Chawdhry <m-chawdhry@ti.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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plat-k3: drivers: Add SA2UL RNG driver

TI K3 family devices contain a set of crypto accelerators under
the umbrella device SA2UL. Add support for setting up the power
and firewalls for this device.

plat-k3: drivers: Add SA2UL RNG driver

TI K3 family devices contain a set of crypto accelerators under
the umbrella device SA2UL. Add support for setting up the power
and firewalls for this device. Then add support for the TRNG
sub-device.

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

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plat-k3: drivers: Add basic support for TI System Control Interface (TI-SCI) protocol

Texas Instruments System Control Interface (TI-SCI) Message Protocol
is used in Texas Instruments System on Chip

plat-k3: drivers: Add basic support for TI System Control Interface (TI-SCI) protocol

Texas Instruments System Control Interface (TI-SCI) Message Protocol
is used in Texas Instruments System on Chip (SoC) such as those
in keystone family K3 SoC to communicate between various compute
processors with a central system controller entity.

TISCI message protocol provides support for management of various
hardware entities within the SoC. Add support driver to allow
communication with system controller entity within the SoC using the
Secure Proxy.

Introduce the basic registration and query capability for the
driver protocol as part of this change. Subsequent patches add in
functionality specific to the TI-SCI features.

Further information can be found in TI-SCI documentation:
https://software-dl.ti.com/tisci/esd/latest/index.html

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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plat-k3: drivers: Add secure proxy driver for communication with System Controller

Secure Proxy is a communication scheme in Texas Instrument's devices
intended to provide an unique communication pa

plat-k3: drivers: Add secure proxy driver for communication with System Controller

Secure Proxy is a communication scheme in Texas Instrument's devices
intended to provide an unique communication path from various processors
in the System on Chip(SoC) to a central System Controller.

Secure Proxy instance exposes "threads" or "proxies" which is
primary representation of "a" communication channel. Each thread is
preconfigured by System controller configuration based on SoC usage
requirements. Secure proxy by itself represents a single "queue" of
communication but allows the proxies to be independently operated.

For communication with TISCI, Secure Proxy driver is required in OP-TEE.

NOTE: Secure proxy configuration is only done by System Controller,
hence these are assumed to be pre-configured instances.

Provide the driver support for Secure Proxy and thread instances.

Tested on AM65x.

See AM65x Technical Reference Manual (SPRUID7E, April 2018)
for further details: https://www.ti.com/lit/ug/spruid7e/spruid7e.pdf

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

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