nand boot support in the linux kernel

HI all,

I am designing a am1808 platform that can boot by nand flash.

But, I found the kernel only supports spi flash boot now.

Please see the source files (board-da850-evm.c and devices-da8xx.c) of kernel in the directory arch/arm/mach-davinci.

Kernel initializes the spi flash in the line#1189~1190 of board-da850-evm.c:

da850_init_spi1(BIT(0), da850_spi_board_info,
   ARRAY_SIZE(da850_spi_board_info));

If 'd like to implement nand flash boot instead, could you provide example code to do this?

Thanks you very much for support.