cd50ffd2fc
On some platforms the UART might have already been initialised, for instance by firmware running before TF-A or by a separate management processor. In this case it would not be need to initialise it again (doing so could create spurious characters). But more importantly this saves us from knowing the right baudrate and the right base clock rate for the UART. This can lead to more robust and versatile firmware builds. Allow to skip the 16550 UART initialisation and baud rate divisor programming, by interpreting an input clock rate of "0" to signify this case. This will just skip the call to console_16550_core_init, but still will register the console properly. Users should just pass 0 as the second parameter, the baudrate (third parameter) will then be ignored as well. Fix copy & paste typos in comments for the console_16550_register() function on the way. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Change-Id: I9f8fca5b358f878fac0f31dc411358fd160786ee |
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