[U-Boot-Users] IVPR on E500

Hello All,

I've noticed some E500 related files (start.S and lib-ppc/board.c, I don't know if others) have been changed with comment "E500 update: repoint IVPR to RAM when code is relocated". I don't understand the need for this change. Traps start in flash, with IVPR set to TEXT_BASE in start.S. Later, this recent patch relocates them to the same code but now in ram, after u-boot's relocation. Later in lib_ppc/board.c:board_init_r() they are then relocated to the beggining of ram (IVPR = 0). Why do we need this "IVPR dance"? What does the "repoint IVPR do RAM" patch fixes?

Thank you All and Best Regards, Nuno