Dear Wolfgang Denk, On Thu, Oct 29, 2009 at 12:00:00PM +0100, Wolfgang Denk wrote: > Dear Wolfgang Wegner, > > In message <20091029082113.ge3...@leila.ping.de> you wrote: > > > > Now I recognized that commit 6385b28116f775da4771b768ba9bf93c3aaaf26e > > removed FPGA relocation, which of course breaks FPGA code for my > > Coldfire board. > > This is an out-of-tree port, right? If your code had been in mainline, > this would not have happened.
I know, as I mentioned in the first place, I am right now updating to get it integrated. (see below for the footnote) > > What is the "proper relocation for PPC boards" that is mentioned > > by Peter in his commit log? I found this test patch by him: > ... > > - I do not understand how the compiler could know about the > > relocation for the FPGA (and possibly other) functions when the > > actual relocation is done during U-Boot run time? > > The compiler / linker create a Global Offset Table (GOT) which > basicly is a list of offsets to the image, where address constants > need to be updated to relocate the image to a new address. This is > what the U-Boot relocation code does: add a (fixed) relocation offset > (target address - source address) to all the locations listed in the > GOT. The problem was, that certain types of addresses (statically > initialized function pointers) did not get listed in the GOT. This is > now fixed. Thank you for the clarification! I will see if I can find out in which state gcc and U-Boot for coldfire are in this respect. Best regards, Wolfgang [At the time of the original port, MCF532x/7x was not present in U-Boot; my own port had quite many conflicts (probably because of me being still very unfamiliar with U-Boot and its concepts) with the upcoming official port, which in turn had some severe problems at least with my setup. This and the fact that I needed some time to get at least a bit familiar with git led to me sticking with my old out-of-tree port. Now as the official MCF537x port is settled I am in the process of doing my homework...] _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
