We experienced that u-boot (at least from Xilinx repositories) does not wait until all its output has left the TX Buffer of the stdout uart, before handing over to the RTEMS application This causes some garbage output at the begin of the RTEMS application in some cases and corrupts the test begin marker prohibiting rtems-test to recognize the test correctly.
See also https://lists.rtems.org/pipermail/users/2020-August/067783.html This patch waits until the TX buffer of the uart is flushed before working with it. The corresponding tickets for integration in master and 5 branches are https://devel.rtems.org/ticket/4055 and https://devel.rtems.org/ticket/4056 Best regards, Jan Jan Sommer (1): bsp/xilinx-zynq: Flush TX-Buffer before initializing uart bsps/arm/shared/serial/zynq-uart-polled.c | 2 ++ 1 file changed, 2 insertions(+) -- 2.17.1 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
