diff --git a/rng-tools-6.10-pkcs11-path.patch b/rng-tools-6.10-pkcs11-path.patch
new file mode 100644
index 0000000..fb2feb7
--- /dev/null
+++ b/rng-tools-6.10-pkcs11-path.patch
@@ -0,0 +1,51 @@
+diff --git a/.travis.yml b/.travis.yml
+index be3bf06..b6acd39 100644
+--- a/.travis.yml
++++ b/.travis.yml
+@@ -1,6 +1,10 @@
+ language: c
+ dist: trusty
+ 
++arch:
++  - amd64
++  - arm64
++
+ compiler:
+   - clang
+   - gcc
+diff --git a/Makefile.am b/Makefile.am
+index db4fcfc..5917023 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -31,9 +31,10 @@ rngd_LDADD	= librngd.a -lsysfs $(LIBS) ${libp11_LIBS} ${libcrypto_LIBS} ${libcur
+ 
+ if PKCS11 
+ rngd_SOURCES	+= rngd_pkcs11.c
++pkcs11_ENGINE = -DDEFAULT_PKCS11_ENGINE=\"$(PKCS11_ENGINE)\"
+ endif
+ 
+-rngd_CFLAGS	= ${pkcs11_CFLAGS} ${libp11_CFLAGS} ${libcrypto_CFLAGS} ${libxml2_CFLAGS} ${openssl_CFLAGS} $(PTHREAD_CFLAGS)
++rngd_CFLAGS	= ${pkcs11_CFLAGS} ${pkcs11_ENGINE} ${libp11_CFLAGS} ${libcrypto_CFLAGS} ${libxml2_CFLAGS} ${openssl_CFLAGS} $(PTHREAD_CFLAGS)
+ rngd_LDFLAGS	= $(PTHREAD_CFLAGS) 
+ 
+ rngtest_SOURCES	= exits.h stats.h stats.c rngtest.c
+diff --git a/configure.ac b/configure.ac
+index f252d03..616d8fa 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -111,6 +111,15 @@ AS_IF(
+ 		PKG_CHECK_MODULES([libp11], [libp11], [], [AC_MSG_ERROR([libp11 is required])])
+ 		PKG_CHECK_MODULES([libcrypto], [libcrypto], [], [AC_MSG_ERROR([libcrypto is required])])
+ 		AC_DEFINE([HAVE_PKCS11],1,[Enable PKCS11])
++                AS_CASE([$host_cpu],
++                        [i?86|armv7hl],
++                        [
++                                PKCS11_ENGINE=/usr/lib/opensc-pkcs11.so
++                        ],
++                        [
++                                PKCS11_ENGINE=/usr/lib64/opensc-pkcs11.so
++                        ])
++                AC_SUBST([PKCS11_ENGINE])
+ 	]
+ )
+ 
diff --git a/rng-tools.spec b/rng-tools.spec
index 114a8f2..df7f491 100644
--- a/rng-tools.spec
+++ b/rng-tools.spec
@@ -1,14 +1,15 @@
 Name:          rng-tools
 Version:       6.10
-Release:       1mamba
+Release:       3mamba
 Summary:       A random number generator daemon
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://github.com/nhorman/rng-tools.git
-## GITSOURCE https://github.com/nhorman/rng-tools.git v6.10
 Source:        https://github.com/nhorman/rng-tools.git/v%{version}/rng-tools-%{version}.tar.bz2
+Patch0:        rng-tools-6.10-pkcs11-path.patch
+Source1:       rngd.service
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -22,6 +23,7 @@ BuildRequires: libsysfs-devel
 BuildRequires: libusb-devel
 BuildRequires: libxml2-devel
 ## AUTOBUILDREQ-END
+Requires:      libopensc
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -32,6 +34,10 @@ It monitors a set of entropy sources, and supplies entropy from them to the syst
 
 %prep
 %setup -q
+#%ifarch x86_64 aarch64
+#% patch0 -p1
+#%endif
+
 ./autogen.sh
 
 %build
@@ -42,17 +48,38 @@ It monitors a set of entropy sources, and supplies entropy from them to the syst
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 %makeinstall
 
+install -D -m0644 %{SOURCE1} %{buildroot}%{_unitdir}/rngd.service
+
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
+%post
+%systemd_post rngd
+:
+
+%preun
+%systemd_preun rngd
+:
+
+%postun
+%systemd_postun rngd
+:
+
 %files
 %defattr(-,root,root)
 %{_bindir}/rngtest
 %{_sbindir}/rngd
+%{_unitdir}/rngd.service
 %{_mandir}/man1/rngtest.1*
 %{_mandir}/man8/rngd.8*
 %doc AUTHORS COPYING
 
 %changelog
+* Sat Dec 26 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 6.10-3mamba
+- fixed systemd file
+
+* Tue Apr 07 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 6.10-2mamba
+- add systemd service file; require libopensc
+
 * Sun Mar 29 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 6.10-1mamba
 - package created using the webbuild interface
diff --git a/rngd.service b/rngd.service
new file mode 100644
index 0000000..1cc09da
--- /dev/null
+++ b/rngd.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Hardware RNG Entropy Gatherer Daemon
+ConditionVirtualization=!container
+
+[Service]
+ExecStart=/usr/sbin/rngd -f
+
+[Install]
+WantedBy=multi-user.target