On Monday, October 4, 2010, Wolfgang Denk <w...@denx.de> wrote: > Dear Albert ARIBAUD, > > In message <4ca999ee.5030...@free.fr> you wrote: >> >> Note however that linking for base address 0 is not mandatory for >> achieving true position independence. What is required is that the code >> which runs from power-up until relocation be able to run anywhere, i.e., >> this code should not require any relocation fixup. That can be achieved >> on ARM by using only relative branches and accessing data only relative >> to pc (e.g. literals) or truly absolute (e.g. HW registers etc). > > That means you need to build all of U-Boot that way, because > significant parts of the code already run before relocation > (including all clocks and timers setup, console setup, printf and all > routines these pull in). >
Have a look at x86 - Relocation is performed at the first possible moment This made full relocation for x86 was relatively trivial :) Regards, Graeme _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
