[MinnowBoard] Using High Speed UART1 as Serial port on CoreBoot

Adrian Perez Resa aperezr at telnet-ri.es
Tue Apr 19 13:49:56 UTC 2016

Hello everybody,

I am newby with minnow board and CoreBoot.
I am trying to use HIGH Speed UART1 as Serial port on CoreBoot (SIO_UART 1 pins) with no success.
High speed UART 1 (SIO UART 1) is connected to JP1 Header in minnow Board.
However, Serial port seems to be always on the default debug UART (connector J4 on Minnow Board).
This Debug UART is attached at ATOM GPIOS GPIO_S0_SC_57 and GPIO_S0_SC_61 pins.

I have tried to configure CoreBoot with the following options:

-          Console > Index for UART port to use for console -> '0'

o   Baud rate 115200

But I don't know exactly what serial port I am using...

Does anybody know what options are necessary to change for using a different uart than the default one...?

Thanks in advance!

Best regards

Adrian Perez Resa
Dpto. Innovación y Desarrollo
Telnet Redes Inteligentes S.A.
Tel: (+34)976 141 800   -   Fax: (+34)976 141 810

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