mx53 loco boot procedure

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Hello guys,
After  dd if=barebox.bin of=/dev/sdb bs=512 and dd if=arch/arm/boot/uImage of=/dev/sdb bs=512 seek=768 i am getting

Board: Freescale i.MX53 LOCO registered netconsole as cs1 eth@eth0: got MAC address from EEPROM: 00:04:9F:01:B4:5B mci@mci0: No partition table found Cannot reset the SD/MMC interface Malloc space: 0x7df00000 -> 0x7fefffff (size 32 MB) Stack space : 0x7def8000 -> 0x7df00000 (size 32 kB) envfs: wrong magic on /dev/env0 no valid environment found on /dev/env0. Using default environment running /env/bin/init... Hit any key to stop autoboot: 1 phy0: Link is up - 100/Full T DHCP client bound to address TFTP from server ('zImage-loco' -> '/image')

Wasn't the board suppose to boot from sd card by default?

Also, i have another question. I want to replace

/* call start_barebox with its absolute address */
        r = (unsigned int)&start_barebox;
        __asm__ __volatile__("mov pc, %0" : : "r"(r));

&start_barebox with the actual address of the uImage practically to skip all the barebox part and
boot only with the minimal CPU and memory setup. What do you think?
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