trunner: assert jffs2 via output instead of time

JIRA: CI-375

trunner/harness/plo.py

@@ -146,14 +146,24 @@ def erase(self, device: str, offset: int, size: int, timeout: Optional[int] = No
             e.cmd = cmd
             raise e
 
-    def jffs2(self, device: str, erase: bool, cleanmarkers: PloJffs2CleanmarkerSpec, timeout: Optional[int] = None):
+    def jffs2(self, device: str, erase: bool, cleanmarkers: PloJffs2CleanmarkerSpec, timeout: int):
         """Performs jffs2 command."""
 
+        block_count = cleanmarkers.number_of_blocks
+
         cmd = f"jffs2 -d {device} -c {cleanmarkers}"
         if erase:
             cmd += " -e"
 
-        self.cmd(cmd, timeout)
+        self.send_cmd(cmd)
+
+        for i in range(0, block_count):
+            try:
+                self.dut.expect(f"(jffs2: block {i}/{block_count})", timeout=timeout) == 0
+            except pexpect.TIMEOUT as e:
+                raise PloError("\nWrong jffs2 command output!", cmd=cmd, output=self.dut.before) from e
+
+        self._assert_prompt()
 
     def app(
         self, device: str, file: str, imap: str, dmap: str, exec: bool = False
@@ -220,7 +230,7 @@ class PloJffsImageProperty(PloImageProperty):
 
     flash_device_id: str
     cleanmarkers_args: PloJffs2CleanmarkerSpec
-    timeout: int
+    timeout: Optional[int] = 1
 
 
 class PloImageLoader(TerminalHarness, PloInterface):

trunner/target/armv7a9.py

@@ -121,7 +121,6 @@ class Zynq7000ZedboardTarget(ARMv7A9Target):
             block_size=0x10000,
             cleanmarker_size=0x10,
         ),
-        timeout=140,
     )
     name = "armv7a9-zynq7000-zedboard"