drivers: caam: support querying whether prediction resistance was setup

CAAM shared descriptors initialization may happen inside OP-TEE or
beforehand, either in the bootloader or system controller.

drivers: caam: support querying whether prediction resistance was setup

CAAM shared descriptors initialization may happen inside OP-TEE or
beforehand, either in the bootloader or system controller.

As it's not known at compile-time whether the shared descriptors were
initialized with prediction resistance or not, OP-TEE use of the CAAM
for random number generation omitted requesting prediction resistance.

In preparation for changing that, provide a caam_hal_rng_pr_enabled()
function that queries the state of the PR bits in the shared descriptors.

Reviewed-by: Clement Faure <clement.faure@nxp.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

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drivers: caam: add HAL for secure memory driver

Add hardware abstraction layer for CAAM secure memory registers. The
majority of the implementation is common to all i.MX platforms.
Only the secure m

drivers: caam: add HAL for secure memory driver

Add hardware abstraction layer for CAAM secure memory registers. The
majority of the implementation is common to all i.MX platforms.
Only the secure memory physical address retrieve method is platform
specific.
In this commit, this method is implemented for imx8m platforms only.

Signed-off-by: Clement Faure <clement.faure@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: caam: increase the minimum entropy delay the imx6sx

The i.MX6SX requires to start the RNG instantiation at a higher
entropy delay to provide a stable RNG generation and avoid RNG
hardware e

drivers: caam: increase the minimum entropy delay the imx6sx

The i.MX6SX requires to start the RNG instantiation at a higher
entropy delay to provide a stable RNG generation and avoid RNG
hardware errors.

Signed-off-by: Clement Faure <clement.faure@nxp.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: caam: fix hal control split key detection

Fix the CAAM Version ID MS register address (CAAM Control + JR Offset).
Change HAL caam_hal_ctrl_splitkey() to read the parameters register LS
bit

drivers: caam: fix hal control split key detection

Fix the CAAM Version ID MS register address (CAAM Control + JR Offset).
Change HAL caam_hal_ctrl_splitkey() to read the parameters register LS
bit 14 (SPLIT_KEY) that indicates the support for the split key.

Fixes: 81ab436 ("drivers: caam: implement NXP CAAM Driver - HMAC")
Signed-off-by: Cedric Neveux <cedric.neveux@nxp.com>
Acked-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: caam: hwrng fix perf drop after suspend/resume

RNG performance drops after a suspend/resume cycle on parts where caam
loses power, since the initial U-boot settings are not restored by OP-T

drivers: caam: hwrng fix perf drop after suspend/resume

RNG performance drops after a suspend/resume cycle on parts where caam
loses power, since the initial U-boot settings are not restored by OP-TEE
when resuming.
Modifying the TRNG "sample size" (the total number of entropy samples that
will be taken during entropy generation) from it's default conservative
value of 2500 to be more in line with the "sample size" that the caam
driver in U-boot/Linux kernel select(512) will solve the performance hit.

Changed the default minimum entropy delay value for I.MX 6SX from 4800
to 3200 to be in line with U-boot and Kernel setting for this value.
The higher default entropy delay value for OP-TEE would have caused a
perceived performance hit after/suspend resume.

Fixes: 2d7a896 ("driver: implement CAAM driver")
Signed-off-by: Dragos Rosioru <dragos.rosioru@nxp.com>
Acked-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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drivers: caam: Add register map changes for Era 10

Era 10 changes the register map.

The updates that affect the drivers:
-new version registers are added

Signed-off-by: Ruchika Gupta <ruchika.gupt

drivers: caam: Add register map changes for Era 10

Era 10 changes the register map.

The updates that affect the drivers:
-new version registers are added

Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Reviewed-by: Sahil Malhotra <sahil.malhotra@nxp.com>
Reviewed-by: Clement Faure <clement.faure@nxp.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

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