diff --git a/generic-release.spec b/generic-release.spec
index 48c59b6..29ff611 100644
--- a/generic-release.spec
+++ b/generic-release.spec
@@ -6,7 +6,7 @@
 %define generic_version 20.03
 %define generic_patch_level LTS
 %define generic_patch_level_extend SP3
-%define generic_release 48
+%define generic_release 49
 %define builtin_release_version 1.0
 
 %define current_arch %{_arch}
@@ -35,7 +35,8 @@ Source7:        dot-tcshrc
 Source8:        dot-cshrc
 
 BuildRequires:	python
-Requires:       %{product_family}-repos
+Requires:  %{product_family}-repos 
+Requires:  %{product_family}-release-custom
 Obsoletes: 	yum-utils yum-utils-help yum-utils-plugins
 
 %description
@@ -58,9 +59,36 @@ The rootfiles package contains basic required files that are placed
 in the root user's account. These files are basically the same as
 those in /etc/skel, which are placed in regular users' home directories.
 
+%package -n %{product_family}-release-custom
+Summary:   openeuler-release-custom
+BuildArch: noarch
+Requires:  bash util-linux
+
+%description -n %{product_family}-release-custom
+openeuler-release-custom
+
 %prep
 %setup -q -n generic-release-%{builtin_release_version}
 
+%posttrans -n %{product_family}-release-custom	
+
+# parameters for grub2
+array="rd.shell=0 fpi_to_tail=off" 
+vendorid=`lscpu | grep "Vendor ID:" | awk '{print $3}'`
+model=`lscpu | grep "Model:" | awk '{print $2}'`
+
+if [ "0x70" == "${vendorid}" -a "3" == "${model}" ]; then
+    cmdline=`grep GRUB_CMDLINE_LINUX= /etc/default/grub | awk -F\" '{print $2}'`
+    for var in ${array[@]}
+    do
+        echo ${cmdline} | grep -q -w "${var}"
+        if [ $? -ne 0 ]; then
+            cmdline+=" ${var}"
+        fi
+    done
+    sed -i "s#GRUB_CMDLINE_LINUX=.*#GRUB_CMDLINE_LINUX=\"${cmdline}\"#g" /etc/default/grub
+fi
+
 %build
 echo OK
 
@@ -169,7 +197,12 @@ rm -rf $RPM_BUILD_ROOT
 %config(noreplace) /root/.tcshrc
 %config(noreplace) /root/.cshrc
 
+%files -n %{product_family}-release-custom
+
 %changelog
+* Tue Dec 31 2021 chemingdao <chemingdao@huawei.com> - 1.0-49
+- init openeuler custom
+
 * Thu Dec 30 2021 gaochong <gaochong@uniontech.com> - 1.0-48
 - require bc for caculating free memory