CONFIG_DEBUG_IMX1_UART is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
i.MX1 Debug UART
configname: CONFIG_DEBUG_IMX1_UART
Kernel low-level debugging port
└─>i.MX1 Debug UART
In linux kernel since version 3.1 (release Date: 2011-10-24)
Say Y here if you want kernel low-level debugging support
on i.MX1.
on i.MX1.