[U-Boot] uboot for MIPS: need help to skip relocate uboot and start uboot from RAM

[Pandurang Kale]

Hello Everyone,

We have MIPS based development board and I am trying to get the uboot up and
running on it.
We have a primary bootloader which check for the valid mod-image stored on
the flash. This mod-image consist of header, uboot and linux kernel.
Depending on the recent, active and stable imagethe primary bootloader first
copies the uboot image. and later on we would copy the kernel image from
uboot.

But when primary bootloader copies the uboot image to the RAM and passes the
control to the uboot, uboot (MIPS version of start.S and
arch/mips/lib/borad.c) tries to relocate the
already copied image from RAM (the primary bootloader copied it to start of
the RAM+1MB address) to top of the RAM (0x87fc0000) region thinking that the
uboot image is stored in flash.

All I need to do is skip the uboot relocate code in MIPS version of uboot
startup as the primary bootloader has already relocated the uboot from Flash
to RAM and set up the stack pointer and other global data appropriately,
which it does after relocation.
I can see there is a switch for ARM processor, CONFIG_SKIP_RELOCATE_UBOOT,
which skips the relocation of uboot code and tries to run the uboot from
RAM. I
cannot see a similar switch implemented for MIPS and didnt find any related
thread anywhere in mailing list or on net.

Do we have similar ARM like switch to SKIP the RELOCATION? If not has anyone
done this before?

I would really appreciate if you can guide me to overcome this issue to run
the uboot cleanly skipping the relocation.

Thanks in advance,
Pandu