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saw that it is fairly outdated - it does not support making of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
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