diff --git a/src/tc/tc_workfd_set_toolchain.py b/src/tc/tc_workfd_set_toolchain.py
new file mode 100644
index 00000000..13cdce57
--- /dev/null
+++ b/src/tc/tc_workfd_set_toolchain.py
@@ -0,0 +1,61 @@
+# This file is part of tbot.  tbot 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 in the hope that it will 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 to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# start with
+# python2.7 src/common/tbot.py -c tbot.cfg -t tc_workfd_set_toolchain.py
+# set the toolchain, dependend on the architecture setting in
+# tb.tc_workfd_set_toolchain_arch
+# supported toolchains defined in
+# tb.tc_workfd_set_toolchain_t_p and tb.tc_workfd_set_toolchain_cr_co
+from tbotlib import tbot
+
+logging.info("args: %s %s", tb.workfd.name, tb.tc_workfd_set_toolchain_arch)
+
+try:
+    tb.tc_workfd_set_toolchain_t_p
+except:
+    logging.error("tb.tc_workfd_set_toolchain_t_p not set")
+    tb.end_tc(False)
+
+try:
+    tb.tc_workfd_set_toolchain_cr_co
+except:
+    logging.error("tb.tc_workfd_set_toolchain_cr_co not set")
+    tb.end_tc(False)
+
+if tb.tc_workfd_set_toolchain_arch in tb.tc_workfd_set_toolchain_t_p:
+    path = tb.tc_workfd_set_toolchain_t_p[tb.tc_workfd_set_toolchain_arch]
+else:
+    logging.error("args: %s unknown architecture %s", tb.workfd.name, tb.tc_workfd_set_toolchain_arch)
+    tb.end_tc(False)
+
+if tb.tc_workfd_set_toolchain_arch in tb.tc_workfd_set_toolchain_cr_co:
+    cross = tb.tc_workfd_set_toolchain_cr_co[tb.tc_workfd_set_toolchain_arch]
+else:
+    logging.error("args: %s unknown architecture %s", tb.workfd.name, tb.tc_workfd_set_toolchain_arch)
+    tb.end_tc(False)
+
+c = tb.workfd
+
+if tb.tc_workfd_set_toolchain_arch == 'sandbox':
+    tmp = 'export PATH=/bin:$PATH'
+    tb.event.create_event('main', tb.boardname, "Toolchain", tmp)
+    tb.eof_write_cmd(c, tmp)
+    tb.end_tc(True)
+
+tmp = 'export PATH=' + path + ':$PATH'
+tb.event.create_event('main', tb.boardname, "Toolchain", path)
+tb.eof_write_cmd(c, tmp)
+tmp = 'export CROSS_COMPILE=' + cross
+tb.eof_write_cmd(c, tmp)
+tb.end_tc(True)