[U-Boot-Users] Re: Compiled system and target board mismatched while make U-boot image..

[ito at mlb.co.jp]

Hello Wolfgang


> Ummm... What shall I say? ELDK for  MIPS  supports  both  LE  and  BE
> configurations, and both work just fine, except for the fact that
> the
   Thank you for reply.

   ELDK user is ok. but with mipsel-linux-gcc, and to comile for
   little, there is a 2 problem.

1. always add -EB to compiler.

-- cpu/mips/config.mk ---
ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
ENDIANNESS = -EL
else
ENDIANNESS = -EB
endif

   this means, to compile for little endian,
   part of cross compiler name have to has a name of "4KCle".
   otherwise, it will put -EB.

   I think, we do not need to put -EL or -EB, compiler default
   is enough.

2. examples/mips.lds、board/dbau1x00/u-boot.lds

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

   this specify bigendian format.

mipsel-linux-ld -g  -Ttext 0x80200000 -T mips.lds \
        -o hello_world -e hello_world hello_world.o libstubs.a \
        -L/usr/src/mldbox/gcc-3.3.x/toolchain_mipsel/bin-ccache/../lib/gcc-lib/mipsel-linux-uclibc/3.3.4 -lgcc
mipsel-linux-ld: hello_world.o: compiled for a little endian system and target is big endian
mipsel-linux-ld: hello_world.o: endianness incompatible with that of the selected emulation
File in wrong format: failed to merge target specific data of file hello_world.omipsel-linux-ld: libstubs.a(stubs.o): compiled for a little endian system and target is big endian
mipsel-linux-ld: libstubs.a(stubs.o): endianness incompatible with that of the selected emulation
File in wrong format: failed to merge target specific data of file libstubs.a(stubs.o)

  To fix these error,
  I need to change 
  OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips",   "elf32-tradbigmips")
  to
  OUTPUT_FORMAT("elf32-tradlittlemips", "elf32-tradlittlemips", "elf32-tradlittlemips")

  or deleteing this line also work.
  so, if ELDK works, without this line, please delete it.

--------
Hiroshi Ito
Media Lab. Inc.,
URL http://www.mlb.co.jp ( Sorry, Japanese only. )
TEL +81-3-5294-7255  FAX +81-3-5294-7256


> dbau1x00  port  produces  warnings  because it is broken as it uses a
> definition of HZ which is not 1000:
> 
> -> export CROSS_COMPILE=mips_4KC-
> -> ./MAKEALL dbau1550       
> Configuring for dbau1x00 board...
> net.c: In function `NetStartAgain':
> net.c:597: warning: integer overflow in expression
> xyzModem.c: In function `xyzModem_stream_open':
> xyzModem.c:455: warning: unused variable `console_chan'
>    text    data     bss     dec     hex filename
>  127896    4548   22864  155308   25eac u-boot
> 
> -> export CROSS_COMPILE=mips_4KCle-
> -> ./MAKEALL dbau1550_el
> Configuring for dbau1x00 board...
> net.c: In function `NetStartAgain':
> net.c:597: warning: integer overflow in expression
> xyzModem.c: In function `xyzModem_stream_open':
> xyzModem.c:455: warning: unused variable `console_chan'
>    text    data     bss     dec     hex filename
>  130072    4548   22864  157484   2672c u-boot
> 
> 
> IMHO it's clearly a toolchain problem, but who am I to know such things?
> 
> Best regards,
> 
> Wolfgang Denk
> 
> -- 
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> We fight only when there is no other choice. We prefer  the  ways  of
> peaceful contact.
> 	-- Kirk, "Spectre of the Gun", stardate 4385.3
> 
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