Hi Dirk,
On Saturday 20 June 2009 19:45:40 Dirk Behme wrote:
Jean-Christophe PLAGNIOL-VILLARD wrote:
- C++ style comment. Found by Wolfgang ;)
This is because it's a copy from the Linux code. Not sure if we should change the coding style here. I really prefer to be in sync with the Linux version. This makes future updates easier.
- The major one: By the new 64bit variables, depending on tool chain,
there are now calls to libgcc introduced. Depending on tool chain, this might work, or fail. As it does with one of my tool chains, which worked totally fine until here. It was my understanding that U-Boot shall not rely on libgcc, i.e. proper tool chain libraries.
Having CONFIG_SYS_64BIT_VSPRINTF not defined, the linker needs "_lshrdi3", which comes from nand_base.o and nand_bbt.o. E.g. from "len = mtd->size >> (this->bbt_erase_shift + 2);" from nand_bbt.c.
Having CONFIG_SYS_64BIT_VSPRINTF enabled, the linker requests _lshrdi3, _udivdi3, _umoddi3 and _clz from libgcc.
Looking into U-Boot's lib_arm/ directory, we have already some low level math functions there to avoid libgcc. E.g. nand_bbt.c has references to _ashrdi3, too, but this is resolved by lib_arm's version what is fine.
I'd like that NAND code is modified that only math is used which U-Boot provides and no libgcc is needed.
this is a already known problem by Stefan and I and solved
two patchs was send to the ML
Thanks for the hint! Do you kindly have the subjects or better links to mailing list archive?
http://git.denx.de/?p=u-boot/u-boot-arm.git;a=commit;h=cf96e690cb9840b4a5dc7...
and
http://git.denx.de/?p=u-boot/u-boot-arm.git;a=commit;h=c5ae538c9bd359c137d30...
both available in the "testing" branch of u-boot-arm.
From you comments on the list I see that you found those patches here too. :)
Do these patches fix the building problem for you?
Thanks.
Best regards, Stefan
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