2011/3/23 Shinya Kuribayashi skuribay@pobox.com:
On 03/21/2011 09:42 PM, Daniel Schwierzeck wrote:
I did some researching and testing with ELDK-4.1, ELDK-4.0 and ELDK-3.1.1.
Thanks, much appreciated.
In ELDK-3.1.1 we have:
- mips_4KC-gcc (GCC) 3.3.3 (DENX ELDK 3.1.1 3.3.3-9)
- GNU assembler 2.14 20030612
Therefore mips32r2 is already supported. But there is another problem with this binutils version. The latest additions to mips.lds and u-boot.lds for supporting recent binutils are causing parse errors.
I wonder what's that 'the latest additions to mips.lds and u-boot.lds for supporting recent binutils' to be exact. Which commit(s) are you referring to? Or could you provide error logs just in case please?
Following changes have been introduced to ld in binutils-2.16:
* Added SORT_BY_NAME and SORT_BY_ALIGNMENT to the linker script language to permit sorting sections by section name or section maximum alignment.
http://sourceware.org/cgi-bin/cvsweb.cgi/~checkout~/src/ld/NEWS?rev=1.116&am...
These new macros are used in mips.lds and all u-boot.lds files. I get follogwing error with ELDK-3.1.1 or other gcc-3.x based toolchains (IncaIP used as sample config):
mips_4KC-ld -g -Ttext 0x80200000 -T mips.lds \ -o <snip>/u-boot-git//build/incaip/examples/standalone/hello_world -e hello_world <snip>/u-boot-git//build/incaip/examples/standalone/hello_world.o <snip>/u-boot-git//build/incaip/examples/standalone/libstubs.o \ -L<snip>/eldk-3.11/usr/bin/../lib/gcc-lib/mips-linux/3.3.3 -lgcc mips_4KC-ld:mips.lds:37: parse error
This error refers to following line: .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
Following commit introduced that change for all u-boot.lds files: http://git.denx.de/?p=u-boot.git;a=commit;h=f62fb99941c625605aa16a0097b396a5...
I'd claim that all toolchains with binutils lesser than 2.16 are not working anymore.
Thus ELDK-3.1.1 and earlier are not functional with mainline U-Boot anyway. ELDK-4.0 and 4.1 with gcc-4.0.0 and binutils-2.16.1 are working properly.
I suggest to drop official support for ELDK-3.1.1 / binutils-2.14 and earlier.
Hmm. According to the README file, even the Linux kernel still builds with at least gcc 3.2. I'm feeling that it might be a bit too early to drop gcc 3.3.3 (ELDK-3.1.1).
So I'd like to take a look at the issue you found this time, first. If it's easy to fix, let's fix it. And if not, revise the patch please. We have not heard of any problem reports on MIPS builds with ELDK-3.1.1 so far (at least I'm not aware of them). The change won't be a problem.
I have prepared a v3 of this patch that checks whether -mips32r2 is supported. If not than -mips32 will be used as fallback. But I want to clarify this first before I send it.
Best regards, Daniel