9301e5644c
Make BaseRngLib more generic by moving x86-specific functionality into 'Rand' and adding files under 'AArch64' to support the optional ARMv8.5 RNG instruction RNDR that is a part of FEAT_RNG. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
/** @file
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Architecture specific interface to RNG functionality.
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Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef BASE_RNGLIB_INTERNALS_H_
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/**
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Generates a 16-bit random number.
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@param[out] Rand Buffer pointer to store the 16-bit random value.
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@retval TRUE Random number generated successfully.
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@retval FALSE Failed to generate the random number.
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**/
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BOOLEAN
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EFIAPI
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ArchGetRandomNumber16 (
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OUT UINT16 *Rand
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);
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/**
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Generates a 32-bit random number.
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@param[out] Rand Buffer pointer to store the 32-bit random value.
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@retval TRUE Random number generated successfully.
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@retval FALSE Failed to generate the random number.
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**/
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BOOLEAN
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EFIAPI
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ArchGetRandomNumber32 (
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OUT UINT32 *Rand
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);
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/**
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Generates a 64-bit random number.
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@param[out] Rand Buffer pointer to store the 64-bit random value.
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@retval TRUE Random number generated successfully.
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@retval FALSE Failed to generate the random number.
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**/
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BOOLEAN
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EFIAPI
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ArchGetRandomNumber64 (
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OUT UINT64 *Rand
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);
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/**
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Checks whether the RNG instruction is supported.
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@retval TRUE RNG instruction is supported.
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@retval FALSE RNG instruction is not supported.
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**/
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BOOLEAN
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EFIAPI
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ArchIsRngSupported (
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VOID
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);
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#if defined (MDE_CPU_AARCH64)
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// RNDR, Random Number
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#define RNDR S3_3_C2_C4_0
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#endif
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#endif // BASE_RNGLIB_INTERNALS_H_
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