Bump buidlroot version to 2018.02.6

bsp/buildroot/support/testing/tests/fs/test_ubi.py

@@ -0,0 +1,40 @@
+import subprocess
+import os
+
+import infra.basetest
+
+
+class TestUbi(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_TARGET_ROOTFS_UBIFS=y
+        BR2_TARGET_ROOTFS_UBIFS_LEBSIZE=0x7ff80
+        BR2_TARGET_ROOTFS_UBIFS_MINIOSIZE=0x1
+        BR2_TARGET_ROOTFS_UBI=y
+        BR2_TARGET_ROOTFS_UBI_PEBSIZE=0x80000
+        BR2_TARGET_ROOTFS_UBI_SUBSIZE=1
+        """
+
+    # TODO: if you boot Qemu twice on the same UBI image, it fails to
+    # attach the image the second time, with "ubi0 error:
+    # ubi_read_volume_table: the layout volume was not found".
+    # To be investigated.
+    def test_run(self):
+        img = os.path.join(self.builddir, "images", "rootfs.ubi")
+        out = subprocess.check_output(["file", img],
+                                      cwd=self.builddir,
+                                      env={"LANG": "C"})
+        out = out.splitlines()
+
+        subprocess.call(["truncate", "-s 128M", img])
+
+        self.emulator.boot(arch="armv7",
+                           kernel="builtin",
+                           kernel_cmdline=["root=ubi0:rootfs",
+                                           "ubi.mtd=0",
+                                           "rootfstype=ubifs"],
+                           options=["-drive", "file={},if=pflash".format(img)])
+        self.emulator.login()
+        cmd = "mount | grep 'ubi0:rootfs on / type ubifs'"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)