[E3-hacking] Faster Linux boot using PBL ?

Hi, I've been thinking of a way to make booting Linux on the E3 a bit faster. Since NAND ready bit is a bit "broken" in u-boot, I think we could use the fact that PBL copies some NAND into SDRAM anyway. But the question is: how can we "trick" PBL, so that it starts to copy the Flash earlier than 4M ? Because I don't like wasting another few MB of user space in the upper 4M region... Or maybe there is a way to "combine" two blocks of MTD into one ? -- Piotr Michniewski