Add AARCH64 specific implementations of:
- OPENSSL_cpuid_setup(), probing hardware capabilitie
(presence of FEAT_AES, etc.)
- OPENSSL_rdtsc(), returning non-trusted entropy by accessing
system counter.
Acked-by: Gerd Hoffmann <kra...@redhat.com>
Acked-by: Leif Lindholm <quic_llind...@quicinc.com>
Signed-off-by: Pierre Gondois <pierre.gond...@arm.com>
---
.../Library/OpensslLib/OpensslLibAccel.inf | 7 ++
.../OpensslLib/OpensslLibFullAccel.inf | 7 ++
.../OpensslLib/OpensslStub/AArch64Cap.c | 66 +++++++++++++++++++
3 files changed, 80 insertions(+)
create mode 100644 CryptoPkg/Library/OpensslLib/OpensslStub/AArch64Cap.c
diff --git a/CryptoPkg/Library/OpensslLib/OpensslLibAccel.inf
b/CryptoPkg/Library/OpensslLib/OpensslLibAccel.inf
index 3d1a9638b1c1..08e8be6ea9e1 100644
--- a/CryptoPkg/Library/OpensslLib/OpensslLibAccel.inf
+++ b/CryptoPkg/Library/OpensslLib/OpensslLibAccel.inf
@@ -1329,6 +1329,7 @@ [Sources.X64]
# Autogenerated files list ends here
[Sources.AARCH64]
+ OpensslStub/AArch64Cap.c
# Autogenerated files list starts here
$(OPENSSL_PATH)/crypto/aes/aes_cbc.c
$(OPENSSL_PATH)/crypto/aes/aes_cfb.c
@@ -1955,11 +1956,17 @@ [Packages]
MdePkg/MdePkg.dec
CryptoPkg/CryptoPkg.dec
+[Packages.AARCH64]
+ ArmPkg/ArmPkg.dec
+
[LibraryClasses]
BaseLib
DebugLib
RngLib
+[LibraryClasses.AARCH64]
+ ArmLib
+
[BuildOptions]
#
# Disables the following Visual Studio compiler warnings brought by openssl
source,
diff --git a/CryptoPkg/Library/OpensslLib/OpensslLibFullAccel.inf
b/CryptoPkg/Library/OpensslLib/OpensslLibFullAccel.inf
index e7e83d419f4b..2a01ffe06bd7 100644
--- a/CryptoPkg/Library/OpensslLib/OpensslLibFullAccel.inf
+++ b/CryptoPkg/Library/OpensslLib/OpensslLibFullAccel.inf
@@ -1432,6 +1432,7 @@ [Sources.X64]
# Autogenerated files list ends here
[Sources.AARCH64]
+ OpensslStub/AArch64Cap.c
# Autogenerated files list starts here
$(OPENSSL_PATH)/crypto/aes/aes_cbc.c
$(OPENSSL_PATH)/crypto/aes/aes_cfb.c
@@ -2107,11 +2108,17 @@ [Packages]
MdePkg/MdePkg.dec
CryptoPkg/CryptoPkg.dec
+[Packages.AARCH64]
+ ArmPkg/ArmPkg.dec
+
[LibraryClasses]
BaseLib
DebugLib
RngLib
+[LibraryClasses.AARCH64]
+ ArmLib
+
[BuildOptions]
#
# Disables the following Visual Studio compiler warnings brought by openssl
source,
diff --git a/CryptoPkg/Library/OpensslLib/OpensslStub/AArch64Cap.c
b/CryptoPkg/Library/OpensslLib/OpensslStub/AArch64Cap.c
new file mode 100644
index 000000000000..846b004a4dd3
--- /dev/null
+++ b/CryptoPkg/Library/OpensslLib/OpensslStub/AArch64Cap.c
@@ -0,0 +1,66 @@
+/** @file
+ Arm capabilities probing.
+
+ Copyright (c) 2023, Arm Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <openssl/types.h>
+#include "crypto/arm_arch.h"
+
+#include <Library/ArmLib.h>
+
+UINT32 OPENSSL_armcap_P = 0;
+
+void
+OPENSSL_cpuid_setup (
+ void
+ )
+{
+ OPENSSL_armcap_P = 0;
+
+ /* Access to EL0 registers is possible from higher ELx. */
+ OPENSSL_armcap_P |= ARMV8_CPUID;
+ /* Access to Physical timer is possible. */
+ OPENSSL_armcap_P |= ARMV7_TICK;
+
+ /* Neon support is not guaranteed, but it is assumed to be present.
+ Arm ARM for Armv8, sA1.5 Advanced SIMD and floating-point support
+ */
+ OPENSSL_armcap_P |= ARMV7_NEON;
+
+ if (ArmHasAes ()) {
+ OPENSSL_armcap_P |= ARMV8_AES;
+ }
+
+ if (ArmHasSha1 ()) {
+ OPENSSL_armcap_P |= ARMV8_SHA1;
+ }
+
+ if (ArmHasSha256 ()) {
+ OPENSSL_armcap_P |= ARMV8_SHA256;
+ }
+
+ if (ArmHasPmull ()) {
+ OPENSSL_armcap_P |= ARMV8_PMULL;
+ }
+
+ if (ArmHasSha512 ()) {
+ OPENSSL_armcap_P |= ARMV8_SHA512;
+ }
+}
+
+/** Read system counter value.
+
+ Used to get some non-trusted entropy.
+
+ @return Lower bits of the physical counter.
+**/
+uint32_t
+OPENSSL_rdtsc (
+ void
+ )
+{
+ return (UINT32)ArmReadCntPct ();
+}
--
2.25.1
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