Bugzilla: Bug 3668 (https://bugzilla.tianocore.org/show_bug.cgi?id=3668)

The Arm True Random Number Generator Firmware, Interface 1.0, specification
defines an interface between an Operating System (OS) executing at EL1 and
Firmware (FW) exposing a conditioned entropy source that is provided by a
TRNG back end.

This v2 patch series updates the following based on the feedback received
for the v1 series at https://edk2.groups.io/g/devel/message/81653:
- Updates TrngLib definitions to use RETURN_STATUS as the return type
from the interface functions as TrngLib is base type library.
- Drops the patch "MdePkg: Add definition for NULL GUID" as there is
already an equivalent definition provided by gZeroGuid. Thus, the
use of gNullGuid has been replaced with gZeroGuid.

The V1 patch series:
- defines a TRNG library class that provides an interface to access the
entropy source on a platform.
- implements a TRNG library instance that uses the Arm FW-TRNG interface.
- Adds RawAlgorithm support to RngDxe for Arm architecture using the Arm
FW-TRNG interface.
- Enables RNG support using FW-TRNG interface for Kvmtool Guest/Virtual
firmware.

The changes can be seen at:
https://github.com/samimujawar/edk2/tree/1829_arm_fw_trng_v2

Sami Mujawar (8):
MdePkg: Definition for TRNG library class interface
ArmPkg: PCD to select conduit for monitor calls
ArmPkg: Add Arm Firmware TRNG library
MdePkg: Add NULL instance of TRNG Library
SecurityPkg: Rename RdRandGenerateEntropy to common name
SecurityPkg: Restructure checks in RngGetInfo
SecurityPkg: Add RawAlgorithm support using TRNG library
ArmVirtPkg: Kvmtool: Add RNG support using FW-TRNG interface

ArmPkg/ArmPkg.dec | 5 +
ArmPkg/ArmPkg.dsc | 1 +
ArmPkg/Library/ArmFwTrngLib/ArmFwTrngDefs.h | 64 +++
ArmPkg/Library/ArmFwTrngLib/ArmFwTrngLib.c | 483 ++++++++++++++++++++
ArmPkg/Library/ArmFwTrngLib/ArmFwTrngLib.inf | 34 ++
ArmVirtPkg/ArmVirtKvmTool.dsc | 10 +
ArmVirtPkg/ArmVirtKvmTool.fdf | 5 +
MdePkg/Include/Library/TrngLib.h | 121 +++++
MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.c | 111 +++++
MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.inf | 30 ++
MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.uni | 12 +
MdePkg/MdePkg.dec | 7 +-
MdePkg/MdePkg.dsc | 1 +
SecurityPkg/RandomNumberGenerator/RngDxe/AArch64/RngDxe.c | 79 +++-
SecurityPkg/RandomNumberGenerator/RngDxe/Arm/RngDxe.c | 163 +++++++
SecurityPkg/RandomNumberGenerator/RngDxe/ArmTrng.c | 61 +++
SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.c | 13 +-
SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h | 43 --
SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RngDxe.c | 12 +-
SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c | 13 +-
SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf | 14 +-
SecurityPkg/RandomNumberGenerator/RngDxe/RngDxeInternals.h | 22 +-
SecurityPkg/SecurityPkg.dsc | 8 +-
23 files changed, 1239 insertions(+), 73 deletions(-)
create mode 100644 ArmPkg/Library/ArmFwTrngLib/ArmFwTrngDefs.h
create mode 100644 ArmPkg/Library/ArmFwTrngLib/ArmFwTrngLib.c
create mode 100644 ArmPkg/Library/ArmFwTrngLib/ArmFwTrngLib.inf
create mode 100644 MdePkg/Include/Library/TrngLib.h
create mode 100644 MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.c
create mode 100644 MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.inf
create mode 100644 MdePkg/Library/BaseTrngLibNull/BaseTrngLibNull.uni
create mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/Arm/RngDxe.c
create mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/ArmTrng.c
delete mode 100644 SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h

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