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| author | Rebecca Cran <rebecca@nuviainc.com> | 2021-05-10 15:53:08 -0600 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-05-11 16:26:05 +0000 |
| commit | 4e5ecdbac8bdf235b2072baa0c5e170cd9f57463 (patch) | |
| tree | dfab7b8f283b9a4b4fc775fc6ef5592776ea88a4 /SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h | |
| parent | 9301e5644cef5a5234f71b178373dd508cabb9ee (diff) | |
| download | edk2-4e5ecdbac8bdf235b2072baa0c5e170cd9f57463.tar.gz edk2-4e5ecdbac8bdf235b2072baa0c5e170cd9f57463.tar.bz2 edk2-4e5ecdbac8bdf235b2072baa0c5e170cd9f57463.zip | |
SecurityPkg: Add support for RngDxe on AARCH64
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>
Diffstat (limited to 'SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h')
| -rw-r--r-- | SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h b/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h new file mode 100644 index 0000000000..072378e062 --- /dev/null +++ b/SecurityPkg/RandomNumberGenerator/RngDxe/Rand/RdRand.h @@ -0,0 +1,43 @@ +/** @file
+ Header for the RDRAND APIs used by RNG DXE driver.
+
+ Support API definitions for RDRAND instruction access, which will leverage
+ Intel Secure Key technology to provide high-quality random numbers for use
+ in applications, or entropy for seeding other random number generators.
+ Refer to http://software.intel.com/en-us/articles/intel-digital-random-number
+ -generator-drng-software-implementation-guide/ for more information about Intel
+ Secure Key technology.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __RD_RAND_H__
+#define __RD_RAND_H__
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/TimerLib.h>
+#include <Protocol/Rng.h>
+
+/**
+ Generate high-quality entropy source through RDRAND.
+
+ @param[in] Length Size of the buffer, in bytes, to fill with.
+ @param[out] Entropy Pointer to the buffer to store the entropy data.
+
+ @retval EFI_SUCCESS Entropy generation succeeded.
+ @retval EFI_NOT_READY Failed to request random data.
+
+**/
+EFI_STATUS
+EFIAPI
+RdRandGenerateEntropy (
+ IN UINTN Length,
+ OUT UINT8 *Entropy
+ );
+
+#endif // __RD_RAND_H__
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