small boot copier for EPCS

Hi Cris,

I think I have maken some progress. I forget to associate the hex file to the boot_rom in the Qsys, because the AN458 doesn't tell me to do it. I also managed to compile the small_boot_copier.s with Quartus 11.0.

Now, the performance of my board is. The hw boot normally, then the sw image is copied. Then the hw lost. I checked the binary file of the my sw, and I found the destination address(2nd 4 bytes) is set to 0x1000, which is the cpu address.

I have checked the bin file of the sw before, the destination address is set to 0x200020.

My nios address is:

cpu 0x1000

sram 0x200000

boot_rom 0x1c00

epcs 0x0

I also set the reset_vector to 0x1c00, and exception vector to 0x200020.

In Nios2 SBT, the bsp editor showes all the linker section are pointing to sram, except .entry to boot_rom.

Do you know where to set this destination address?

Thank you very much. Please forgive me for my bad english.

Derek