I have discovered that EARLY_PRINTK is activated in linux-2.6/arch/nios2/Kconfig.
Does someone know how to deactivate it without patching this file?
The trouble is that "early_printk.c" supports only jtag_uart console, EVEN if deactivated in menuconfig.
I have also found another trouble: UARTs have to be called 'uart0' to 'uart3' in order to be initialized, but 'console.c' expects UART_BASE (and not UART0_BASE) to be defined in order to use the serial port as boot console.
However, having patched Kconfig and console.c, I succeeded to boot using the UART console.
