Hello Igor,
Thanks for your reply.
Building imx_v7_mfg_defconfig will give us uImage with Mfgtool support. That's fine.
But for our board each time we flash and reboot, the u-boot is default 1GB ram which is same as the Mfgtool's u-boot. But if you see the Mfgtool directory structure, "files" directory contains the images to be flashed.
That's exactly not happening for "u-boot" only.
uImage and filesystem are flashed okay but not u-boot.
My guess was that, once the DDR is initialized with 1GB ram, even though i tried flashing 2GB configuration u-boot, the MFGtool is not able to flash that.
That's why i wanted to try this method.
What i want is, the source for u-boot with which the MfgTool u-boot is configured with.