diff --git a/tools/.gitignore b/tools/.gitignore
new file mode 100644
index 0000000..c33679a
--- /dev/null
+++ b/tools/.gitignore
@@ -0,0 +1,9 @@
+/bmp_logo
+/crc32.c
+/envcrc
+/environment.c
+/gen_eth_addr
+/img2srec
+/mkimage
+/sha1.c
+/ubsha1