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Booting from external SPI Memory, LPC3250

Hi,

I am using Phytec LPC3250 board with uVision IDE.

I want my code to boot from an external SPI EEPROM that we connected via the extension board. (Removing J16 jumper) I can successfuly write and read the EEPROM. However, the boot does not occur.

When I used the EEPROM available on the PHYTEC board, there was no problem, the boot successfuly happened. I don't know why the same code in another EEPROM wouldnt work.

Can the problem be that the bootstrap code in the internal ROM can only boot with the EEPROM on the phytec board? The user manual says, any bootable SPI memory connected to SSP0 starts the boot procedure.

May that be possible? How can the bootstrap read the data from "any" SPI flash without knowing the opcodes, etc?

Thanks in advance.