new file mode 100644
@@ -0,0 +1 @@
+uart serialcheck.sh
b/testcases/kernel/device-drivers/Makefile
@@ -27,6 +27,7 @@ SUBDIRS := acpi \
rtc \
tbio \
uaccess \
+ uart \
zram
include $(top_srcdir)/include/mk/generic_trunk_target.mk
b/testcases/kernel/device-drivers/uart/Makefile
new file mode 100644
@@ -0,0 +1,22 @@
+# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+top_srcdir ?= ../../../..
+include $(top_srcdir)/include/mk/testcases.mk
+
+INSTALL_TARGETS := *.sh
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
b/testcases/kernel/device-drivers/uart/serialcheck.sh
new file mode 100755
@@ -0,0 +1,111 @@
+#!/bin/sh
+###############################################################################
+#
+# Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+# Copyright (C) 2019, Unisoc Communications Inc.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation version 2.
+#
+# This program is distributed "as is" WITHOUT ANY WARRANTY of any
+# kind, whether express or implied; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+###############################################################################
+
+# @desc Test UART ports using git://
git.breakpoint.cc/bigeasy/serialcheck.git
+
+#### Functions definitions ####
+usage()
+{
+ echo "usage: ./${0##*/} [-r UART_RATE] [-l LOOPS] [-x to enable HW
flow control]"
+ exit 1
+}
+
+# Default values
+: ${UART_RATE:=115200}
+: ${UART_LOOPS:=5}
+: ${UART_HWFLOW:=0}
+
+PORTS_TO_TEST=();
+UART_PORTS=();
+ARRAY=(`find /sys/class/tty/*/uartclk`);
+
+check_requirements()
+{
+ which serialcheck
+ ret=$?
+ if [ $ret -eq 0 ];then
+ tst_res TINFO "serialcheck command is in system,continue to test"
+ else
+ tst_brk TCONF "test failed for lack of requirement,returned is $ret"
+ fi
+
+}
+
+create_test_file()
+{
+ temp_test_file=`mktemp`
+ dd if=/dev/urandom of=$temp_test_file count=1 bs=$((UART_RATE / 2))
+}
+
+get_uart_ports()
+{
+for i in ${ARRAY[@]}; do
+ PORT=/dev/`echo $i | cut -d'/' -f 5`
+ # Activate port in case it will be initialized only when startup
+ echo "DDT TESTING" > $PORT 2>/dev/null
+ if [ `cat $i` -ne 0 ]; then
+ UART_PORTS=("${UART_PORTS[@]}" "$PORT")
+ fi
+done
+}
+
+filter_out_used_ports()
+{
+ which lsof
+ ret=$?
+ if [ $ret -eq 0 ];then
+ tst_res TINFO "lsof command exist, filter out used ports";
+ else
+ tst_brk TCONF "test failed for lack of requirement,returned is $ret"
+ fi
+
+ for i in ${UART_PORTS[@]}; do
+ lsof | grep $i &> /dev/null ||
PORTS_TO_TEST=("${PORTS_TO_TEST[@]}" $i)
+ done
+}
+
+run_serial_test()
+{
+ create_test_file
+ for i in ${PORTS_TO_TEST[@]}; do
+ if [ $UART_HWFLOW -eq 0 ]; then
+ { sleep 1; serialcheck -b $UART_RATE -d $i -f $temp_test_file
-l $UART_LOOPS -m t -k; }&
+ PID=$!
+ serialcheck -b $UART_RATE -d $i -f $temp_test_file -l
$UART_LOOPS -m r -k || { kill -- -$PID 2>/dev/null; tst_res TFAIL "TEST
FAILED"; }
+ else
+ { sleep 1; serialcheck -b $UART_RATE -d $i -f $temp_test_file
-l $UART_LOOPS -m t -h; } &
+ PID=$!
+ serialcheck -b $UART_RATE -d $i -f $temp_test_file -l
$UART_LOOPS -m r -h || { kill -- -$PID 2>/dev/null; tst_res TFAIL "TEST
FAILED"; }
+ fi
+ done
+ rm $temp_test_file
+ tst_res TPASS "uart test passed"
+}
+
+
+TST_TESTFUNC=do_test
+. tst_test.sh
+
+do_test()
+{