If you have enabled the serial port on the bcm63xx CPU
you can make it the console by answering Y to this option.
+config SERIAL_RK29
+ bool "RockChip rk29 serial port support"
+ depends on ARM && ARCH_RK29
+ select SERIAL_CORE
+
+config SERIAL_RK29_STANDARD
+ bool "Use RockChip rk29 serial port support standard"
+ default y
+ depends on SERIAL_RK29
+
+config UART0_RK29
+ bool "RockChip rk29 serial port 0 support"
+ depends on SERIAL_RK29
+
+config UART0_CTS_RTS_RK29
+ bool "RockChip rk29 serial port 0 cts rts support"
+ depends on UART0_RK29
+
+config UART0_DMA_RK29
+ bool "RockChip rk29 serial port 0 dma support (EXPERIMENTAL)"
+ depends on UART0_RK29 && SERIAL_RK29_STANDARD
+
+config UART1_RK29
+ bool "RockChip rk29 serial port 1 support"
+ depends on SERIAL_RK29
+
+config UART2_RK29
+ bool "RockChip rk29 serial port 2 support"
+ depends on SERIAL_RK29
+
+config UART2_CTS_RTS_RK29
+ bool "RockChip rk29 serial port 2 cts rts support"
+ depends on UART2_RK29
+
+config UART2_DMA_RK29
+ bool "RockChip rk29 serial port 2 dma support (EXPERIMENTAL)"
+ depends on UART2_RK29 && SERIAL_RK29_STANDARD
+
+config UART3_RK29
+ bool "RockChip rk29 serial port 3 support"
+ depends on SERIAL_RK29
+
+config UART3_CTS_RTS_RK29
+ bool "RockChip rk29 serial port 3 cts rts support"
+ depends on UART3_RK29
+
+config UART3_DMA_RK29
+ bool "RockChip rk29 serial port 3 dma support (EXPERIMENTAL)"
+ depends on UART3_RK29 && SERIAL_RK29_STANDARD
+
+config SERIAL_RK29_CONSOLE
+ bool "Rockchip rk29 serial console support"
+ depends on SERIAL_RK29=y
+ select SERIAL_CORE_CONSOLE
+
+config SERIAL_SC8800
+ tristate "SC8800 support"
+ depends on SPI
+ select SERIAL_CORE
+ help
+ SC8800 spi-serial support
+
config SERIAL_GRLIB_GAISLER_APBUART
tristate "GRLIB APBUART serial support"
depends on OF