Hi all, The compiler optimization John mentioned is described here (from 2007!): http://casper.berkeley.edu/memos/xps_optimization.pdf
As well as here: http://casper.berkeley.edu/wiki/FAQ#Q:_My_LWIP_design_builds_OK_but_the_soft ware_compile_fails_with_a_message_like... Awhile ago we put together a lightweight UDP basesystem for the ibobs that got around a lot of the problems with the telnet server (dropped connections, lwip stack freeze up, etc...) This basesystem includes a 'MAKESMALL' directive to automatically strip out verbosity. A little patch script that can be applied to a 7_1 or 10_1 basesystem is available at: http://casper.berkeley.edu/wiki/LWIP Cheers, Andrew On 5/25/10 5:22 PM, "John Ford" <[email protected]> wrote: >> Thanks, Glenn, >> >> I have not added any PPC code and I am using the 10.1 tools installed >> at BWRC, so I assumed those were not the problem, but I just now >> built a simple test design with LWIP using the 10.1 tools and it worked! >> >> My guess is that sw registers and such cause the code to grow and >> once you exceed a certain point - ka-boom! At least now I think I >> know where to look... > > There's an compiler optimization option that can help. It optimizes for > size instead of speed. I can't remember the specifics but I can look > tomorrow... > > John > >> >> Thanks again, >> Dave >> >> On May 25, 2010, at 16:17 , G Jones wrote: >> >>> These messages mean that your PowerPC code is too large. This a >>> common occurrence when using LWIP. You need to reduce your code >>> size some how. One way I've done this is by removing verbose error >>> messages from the .c files in the drivers directory. >>> >>> If you haven't added any PowerPC code, make sure all of your ISE/ >>> EDK are patched to the correct version. For 7.1, there was an EDK >>> patch that was necessary to avoid this problem. >>> >>> Glenn >>> >>> On Tue, May 25, 2010 at 4:13 PM, David MacMahon >>> <[email protected]> wrote: >>> I'm trying to build an ibob design with LWIP on 10.1, but I get >>> this error at link time... >>> >>> /vol/hitz/tools/commercial/xilinx/10.1/EDK/gnu/powerpc-eabi/lin64/ >>> bin/../lib/gcc/powerpc-eabi/4.1.1/../../../../powerpc-eabi/bin/ld: >>> region plb_bram_if_cntlr_1 is full (Software/executable.elf >>> section .data) >>> >>> ... followed by a bunch of "section XXX overlaps section .text" and >>> a bunch of "section XXX oerlaps previous sections" messages. >>> >>> Does the "IBOB LWIP" block work under 10.1? >>> >>> Thanks, >>> Dave >>> >>> >>> >> >> > > >
