Create Shell task in kernel when PLATFORM_ROOTFS is disabled

If the platform doesn't support rootfs but shell and serial
console are enabled, create Shell task in kernel.
Note that normally, shell task is created by /bin/init.
Signed-off-by: NZbigniew Bodek <zbigniew.bodek@huawei.com>
Change-Id: If3bf55313d897569b59902b07eaa042eee71a8df

shell/full/src/base/show.c

@@ -100,7 +100,16 @@ STATIC UINT32 OsShellSourceInit(INT32 consoleId)
         ret = LOS_NOK;
         goto ERR_OUT4;
     }
-    if (consoleId == CONSOLE_TELNET) {
+    if ((consoleId == CONSOLE_TELNET)
+#if !defined(LOSCFG_PLATFORM_ROOTFS)
+        /*
+	 * In case of ROOTFS disabled but
+	 * serial console enabled, it is required
+	 * to create Shell task in kernel for it.
+	 */
+        || (consoleId == CONSOLE_SERIAL)
+#endif
+                                        ) {
         ret = OsShellCreateTask(shellCB);
         if (ret != LOS_OK) {
             goto ERR_OUT4;