Hi Mike,

If you change the file format to tradlittlemips then you'll also need to compile using the little endian flag (-EL) instead of the default big endian flag (-EB) flag. If you haven't already you'll probably have to do something like this:

--- cpu/mips/config.mk 2003-06-27 17:32:33.000000000 -0400 +++ cpu/mips/config.mk 2004-10-04 16:09:31.612045528 -0400 @@ -21,4 +21,4 @@ # MA 02111-1307 USA #

-PLATFORM_CPPFLAGS += -mcpu=4kc -EB -mabicalls +PLATFORM_CPPFLAGS += -mcpu=4kc -EL -mabicalls

Hope that helps, Charles

C Michael Sundius wrote:

Hi,

I am trying to port u-boot to a system w/ a mips 4kc little endian processor.

in looking at other cpu/boards to use as a starting point/template, I chose the tb0229 board as it looked to also be a 4kc little endian cpu.

when I build, I get the an undefined reference to _GLOBAL_OFFSET_TABLE_.

I did some fiddling aroud, and comparing to linker command files for other boards and I found that the line:

OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradlittlemips",\ "elf32-tradlittlemips")

if changed to:

OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips", "elf32-tradbigmips")

will allow me to compile and link fine...

my question is then:

1. what does this really do?
2. if I'm using a little endian cpu, do I really need it set to

elf32-tradlittlemips? 3) if so how do I solve my problem? 4) if not why?

one more note the compiler/toolchain that I'm using is from montavista, the -v option displays the following:

====================================== mips_fp_le-gcc -v Reading specs from /opt/hardhat/devkit/mips/fp_le/lib/gcc-lib/ mipsel-hardhat-linux/3.2.1/specs Configured with: ../configure --host=i686-pc-linux-gnu --target=mipsel-hardhat-linux --prefix=/opt/hardhat/devkit/mips/fp_le --exec-prefix=/opt/hardhat/devkit/mips/fp_le --bindir=/opt/hardhat/devkit/ mips/fp_le/bin --sbindir=/opt/hardhat/devkit/mips/fp_le/sbin --sysconfdir=/ opt/hardhat/devkit/mips/fp_le/etc --datadir=/opt/hardhat/devkit/mips/fp_le/ share --includedir=/opt/hardhat/devkit/mips/fp_le/include --libdir=/opt/ hardhat/devkit/mips/fp_le/lib --libexecdir=/opt/hardhat/devkit/mips/fp_le/ libexec --localstatedir=/opt/hardhat/devkit/mips/fp_le/var --sharedstatedir=/ opt/hardhat/devkit/mips/fp_le/share --mandir=/opt/hardhat/devkit/mips/fp_le/ man --infodir=/opt/hardhat/devkit/mips/fp_le/info --program-transform-name=s,^,mips_fp_le-, --enable-cross --with-gxx-include-dir=${prefix}/mipsel-hardhat-linux/include/g++-v3 --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-__cxa_atexit --disable-multilib Thread model: posix gcc version 3.2.1 20020930 (MontaVista) =======================================

thanks for any help you can offer...(sorry this is maybe more of a tool related question, but monta vista has not been much help as of yet).

Mike ~

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