[U-Boot-Users] u-boot reloacting to SRAM instead of SDRAM

agnel juni junijoseph at yahoo.co.in
Tue Nov 14 19:52:17 CET 2006

Hello all,

We have a requirement in an MPC8540 based custom board,for the board to boot-up independent of SDRAM.

So, we are trying to map SRAM in place od SDRAM in u-boot. Though we succeeded bringing-up the board with this change, we see the behaviour being very flaky.

Though the board boots up without SDRAM module (say 2 /10 times), this happens only intitiating the boot-up from BDI.
Otherwise it hangs while reading the CPU clock or configuring base registers. The board never comes up stand alone.

I think this happens while reading from Global Data / Initial stack which is supposed to be running from SDRAM , now moved to SRAM.

I did browse through the u-boot mailing list to see any similar case, but don't and thats the reason I am asking for help.

So, my question is is it possible to run u-boot by relocating to SRAM instead of SDRAM ?

Any help is appreciated.


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