kernelconfig_penguin
CONFIG_DEBUG_SIRFPRIMA2_UART1 is not available for the default architecture x86.
Result is shown for architecture arm

Kernel low-level debugging messages via SiRFprimaII UART1

configname: CONFIG_DEBUG_SIRFPRIMA2_UART1

Kernel low-level debugging port
└─> Kernel low-level debugging messages via SiRFprimaII UART1

Say Y here if you want the debug print routines to direct
their output to the uart1 port on SiRFprimaII devices.