4e5ecdbac8
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>
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/** @file
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Header for the RDRAND APIs used by RNG DXE driver.
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Support API definitions for RDRAND instruction access, which will leverage
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Intel Secure Key technology to provide high-quality random numbers for use
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in applications, or entropy for seeding other random number generators.
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Refer to http://software.intel.com/en-us/articles/intel-digital-random-number
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-generator-drng-software-implementation-guide/ for more information about Intel
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Secure Key technology.
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Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
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(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __RD_RAND_H__
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#define __RD_RAND_H__
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/TimerLib.h>
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#include <Protocol/Rng.h>
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/**
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Generate high-quality entropy source through RDRAND.
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@param[in] Length Size of the buffer, in bytes, to fill with.
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@param[out] Entropy Pointer to the buffer to store the entropy data.
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@retval EFI_SUCCESS Entropy generation succeeded.
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@retval EFI_NOT_READY Failed to request random data.
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**/
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EFI_STATUS
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EFIAPI
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RdRandGenerateEntropy (
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IN UINTN Length,
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OUT UINT8 *Entropy
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);
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#endif // __RD_RAND_H__
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