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Leo Yan 51ebe8cd6a driver: rng: Do not check ARM_SMCCC_TRNG_VERSION

As described in the document SMC Calling Convention (ARM DEN 0028 1.5 F),
section 7 "Arm Architecture Calls", the SMC call SMCCC_ARCH_FEATURES is
not expected to support the function ID ARM_SMCCC_TRNG_VERSION. Trusted
Firmware-A follows up the specification in its implementation.

This commit removes the invocation to avoid the failure - which is a
wrong calling in U-boot. The later code invokes ARM_SMCCC_TRNG_VERSION
for retrieving the TRNG version, except it can read back the version
number, it also can be used to detect whether the TRNG is supported or
not.

Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Weizhao Ouyang <o451686892@gmail.com>

2024-07-18 07:40:30 -06:00

arm_rndr.c

rng: eliminate common.h include from RNG drivers

2024-03-02 12:26:19 -05:00

iproc_rng200.c

rng: eliminate common.h include from RNG drivers

2024-03-02 12:26:19 -05:00

jh7110_rng.c

rng: Add StarFive JH7110 RNG driver

2023-11-02 17:45:53 +08:00

Kconfig

rng: Introduce SPL_DM_RNG