RngGetInfo() is one of the 2 functions of the EFI_RNG_PROTOCOL.
RngGetInfo() is currently a mere wrapper around
ArchGetSupportedRngAlgorithms() which is implemented differently
depending on the architecture used.
RngGetInfo() does nothing more than calling
ArchGetSupportedRngAlgorithms(). So remove it, and let RngGetInfo()
be implemented differently according to the architecture.
This follows the implementation of the other function of the
EFI_RNG_PROTOCOL, RngGetRNG().
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
gEfiRngAlgorithmSp80090Ctr256Guid was used as the default algorithm
in RngGetRNG(). The commit below set the default algorithm to
PcdCpuRngSupportedAlgorithm, which is a zero GUID by default.
As the Pcd value is not defined for any platform in the edk2-platfoms
repository, assume it was an error and go back to the first version,
using gEfiRngAlgorithmSp80090Ctr256Guid.
Fixes: 4e5ecdbac8 ("SecurityPkg: Add support for RngDxe on AARCH64")
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
Bugzilla: 3668 (https://bugzilla.tianocore.org/show_bug.cgi?id=3668)
Rename RdRandGenerateEntropy() to GenerateEntropy() to provide a
common interface to generate entropy on other architectures.
GenerateEntropy() is intended to generate high quality entropy.
Also move the definition to RngDxeInternals.h
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Acked-by: Jiewen Yao <jiewen.yao@intel.com>
AARCH64 support has been added to BaseRngLib via the optional
ARMv8.5 FEAT_RNG.
Refactor RngDxe to support AARCH64, note support for it in the
VALID_ARCHITECTURES line of RngDxe.inf and enable it in SecurityPkg.dsc.
Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
