Hi Fabio,
I understand, from the MAINTAINERS file list, that you are the maintainer for the mx53ard board. I took a copy of the u-boot sources for the Freescale SABRE Automotive Infotainment board (aka mx53ard board) from the Freescale site. As the result I got the u-boot-2009.08 building tree directory along with the associated cross compiler gcc-4.4.4-glibc-2.11.1-multilib-1.0-1.386 tools.
After some trial and error I managed to configure the mx53_ard_dd3.h for NAND and YAFFS2 support and successfully ran make, resulting in creation of the following files:
* u-boot
* u-boot.bin
* u-boot.srec
* u-boot.map
* u-boot.lds
However, I would want to initially boot from SD-card and I would like to be able to generate an imx image of the u-boot when running make. I looked at the Makefile from the Freescale release of u-boot-2009.08 and saw that it is fairly outdated - it does not support making of u-boot.imx image. At the same time I see that the general denx distribution (u-boot-2011.12) of u-boot sources does have the support for making u-boot.imx image in its Makefile. So I am wondering if a patch that can be applied to the u-boot-2009.08 Freescale u-boot source that will bring the make tools up to date and able to make u-boot.imx file does exist?
Failing that, is there another way to configure the denx u-boot-2011.12 release to support NAND and YAFFS2 and thus, by successfully compiling, generate a u-boot.imx image file.
Cheers,
Bud Miljkovic