On Thu, Sep 20, 2012 at 3:24 PM, Robert Thorhuus <robert.thorh...@ericsson.com> wrote:
> I'm using 64 bit mpc85xx cores. U-Boot runs in 32-bit mode even on a 64-bit code. > Mapping the whole memory from the beginning was of course just an initial > thought. > But for me it looks like the code is just not able to deal with more than > 3.99GB mapped. U-Boot will not be able to be relocated. I would be very surprised if U-Boot could handle a value of CONFIG_MAX_MEM_MAPPED larger than 2GB, no matter what. We use the address space above 2GB for I/O addresses, like CCSR and PCI memory. You would need to reshuffle your I/O memory mappings to use a larger value. And even then, we've never tested that, and so who knows what obscure bugs are in the code. Is there a reason why you need access to more than 2GB of RAM from within U-Boot? -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
