[U-Boot] x86: u-boot.bin differs in u-boot.rom

[Stefan Roese]

Hi Bin, Hi Simon,

I'm currently trying to only update the u-boot.bin part in the
SPI NOR chip instead of updating the complete ROM (8MiB).
Updating u-boot.bin (same as u-boot-dtb.bin) at 0x70.0000 results
in a non booting board though. I've checked a bit and found
that the U-Boot image in u-boot.rom at this offset differs
from the original u-boot.bin file. Here a diff:

uboot.test (u-boot.rom at offset 0x70.0000)
0000 2D50: 54 2D F0 FF 50 4C F7 FF  00 98 01 00 00 00 F0 FF  T-..PL.. 
........
u-boot.bin 
        0000 2D50: 54 2D F0 FF 00 00 00 00  00 00 00 00 00 00 F0 FF 
T-...... ........
Do you know why this is the case? I would have expected no differ

Thanks,
Stefan