On 06.03.2012 04:13, Bud Miljkovic wrote:

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 I looked at the Makefile from the Freescale release of u-boot-2009.08 and saw that it is fairly outdated - it does not support making of u-boot.imx image.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?

Using the Freescale 2009.08 U-Boot, you have everything you need with the generated u-boot.bin. Or in other words: The Freescale U-Boot u-boot.bin is from (SD) header point of view the same like the mainline u-boot.imx. Or in other words: The Freescale U-Boot uses the compiler/assembler to generate the header (see the file flash_header.S). The mainline U-Boot uses the mkimage/imximage tool *after* the u-boot.bin is generated to put the correct header in front of the u-boot.bin resulting in u-boot.imx. I.e. the Freescale U-Boot does everything in one step with the compiler/assembler, the mainline U-Boot does the same in two steps with an extra tool.

Best regards

Dirk