Hi Alex,

Hi Andrea, thank you for your explanation but the stacks of EXCEPTION MODEs which we discussed about is still not very clear. U-boot here does not use interrupts,so there is no need for such initialization for interrupts,but we can"t insure that there is no core exception.In case of these exception,the system may go wrong. So I think that we should initialize the stacks for those exceptions.

BTW, even if not used into the bootloader, interrupt vector are initialized by u-boot (take a look at cpu/s3c44b0/start.S)

And there is no initialization in linux, either.What should linux do in case of these exceptions. So there is the initialization in other common start codes of s3c44b0x.

Something is still not clear to me... could you please tell me where I can find some example of such code (or where this initialization is explained into the ARM or Samsung manual)? Thanks.

Best Regards,

Andrea Scian