On 9 August 2018 at 13:04, Simon Goldschmidt <simon.k.r.goldschm...@gmail.com> wrote: > If _debug_uart_putc() is called before _debug_uart_init(), the > ns16550 debug uart driver hangs in a tight loop waiting for the > tx FIFO to get empty. > > As this can happen via a printf sneaking in before the port calls > debug_uart_init(), let's rather ignore characters before the debug > uart is initialized. > > This is done by reading the baudrate divisor and aborting if is zero. > > Tested on socfpga_cyclone5_socrates. > > Signed-off-by: Simon Goldschmidt <simon.k.r.goldschm...@gmail.com> > --- > v2: > - this patch is new in v2 of the series. It replaces the printf/debug > change in reset_manager_gen5.c from v1 > > drivers/serial/ns16550.c | 18 ++++++++++++++++-- > 1 file changed, 16 insertions(+), 2 deletions(-)
We cannot use global_data before it is set up, so I think this is the best solution. Acked-by: Simon Glass <s...@chromium.org> Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
