[U-Boot] i.MX6 - u-boot binary size getting changed

[ansaris]

Hi,

We are using imx6Q sabresd platform for our development with Linux 
3.10.17_1.0.0-GA BSP.

We have installed the meta-tool chain in our 64bit Host PC and 32 bit 
Host PC using below steps.
$bitbake meta-toolchain
$sudo sh tmp/deploy/sdk/poky-eglibc-x86_64-arm-toolchain-<version>.sh

The u-boot source code is compiled in 32bit host PC and with this 
u-boot.imx binary, the target board is booted.
At u-boot level, the command "bdinfo" displays below information.

    arch_number = 0x0000112D
    boot_params = 0x10000100
    DRAM bank   = 0x00000000
    -> start    = 0x10000000
    -> size     = 0x40000000
    eth0name = FEC
    ethaddr = 00:01:02:03:04:05
    current eth = FEC
    ip_addr = <NULL>
    baudrate = 115200 bps
    TLB addr    = 0x4FFF0000
    relocaddr = 0x4FF68000
    reloc off   = 0x38768000
    irq_sp = 0x4F565F38
    sp start    = 0x4F565F28

Then the u-boot source code is compiled in 64bit host PC and with this 
u-boot.imx binary, the target board is booted.
At u-boot level, the command "bdinfo" displays below information.

    arch_number = 0x0000112D
    boot_params = 0x10000100
    DRAM bank   = 0x00000000
    -> start    = 0x10000000
    -> size     = 0x40000000
    eth0name = FEC
    ethaddr = 00:01:02:03:04:05
    current eth = FEC
    ip_addr = <NULL>
    baudrate = 115200 bps
    TLB addr    = 0x4FFF0000
    relocaddr = 0x4FF66000
    reloc off   = 0x38766000
    irq_sp = 0x4F563F38
    sp start    = 0x4F563F28


We would like to know, why the "relocaddr & reloc off "(as highlighted 
above) are different? since the source codes are same and compiled in 
different host PC (64bit & 32bit).
In addition, we checked the u-boot.imx binary file size.  We could see 
the difference in the file size as below
u-boot.imx(compiled in 32bit host PC) - 313644 bytes
u-boot.imx(compiled in 64bit host PC) - 318780 bytes


Thank You,
Regards,
Ansari