Re: .elf to .bin (making an image)

Re: .elf to .bin (making an image)

[Michael Sokolov]

Shaun Jackman <sjackman@ed.gray.internal> wrote:

> How do I create an image of an executable suitable for burning into flash?
> I have a .elf, so a file converter would do.

Use objcopy from binutils.

> Or, is
> there a way to get an ld script to link the .bin in with a symbol at the
> start of the dump?

You can list your .bin as an object on the link line (indicating the input
object format as binary) and use the linker script to direct it where you want
it to go.

--
Michael Sokolov		Harhan Engineering Laboratory
Public Service Agent	International Free Computing Task Force
			International Engineering and Science Task Force
			615 N GOOD LATIMER EXPY STE #4
			DALLAS TX 75204-5852 USA

Phone: +1-214-824-7693 (Harhan Eng Lab office)
E-mail: msokolov@ivan.Harhan.ORG (ARPA TCP/SMTP) (UUCP coming soon)

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Re: .elf to .bin (making an image)

[Shaun Jackman]

> > How do I create an image of an executable suitable for burning into flash?
> > I have a .elf, so a file converter would do.
> Use objcopy from binutils.
Works perfect. thanks

> > Or, is there a way to get an ld script to link the .bin in with a
> > symbol at the start of the dump?
> You can list your .bin as an object on the link line (indicating the input
> object format as binary) and use the linker script to direct it where you want
> it to go.
I'm having trouble making this work.
My command line is...
arm-elf-gcc -nostartfiles -L../at91 -o main.elf main.o flash.o
 -bbinary image.bin -T./start.ld -larch

And the relevant section of the .ld script is...
  .rodata :
  {
    *(.rodata)
    *(.rodata.*)
    *(.gnu.linkonce.r*)
    image = .;
    *.bin(*)
    image_end = .;
  } > rom

I get this error...
main.o: file not recognized: File format not recognized
arm-elf-gcc: file path prefix
`/tools/H-i686-pc-linux-gnu/lib/gcc-lib/binary/2.95.2/' never used
make: *** [main.elf] Error 1

It looks like it's trying to interpret my .o files as binarires (when they
should be elf object files, I think). How do I link the .o files as
object files and the .bin file as a binary?

Thanks,
Shaun



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Re: .elf to .bin (making an image)

[Michael Sokolov]

Shaun Jackman <sjackman@ed.gray.internal> wrote:

> I'm having trouble making this work.
> My command line is...
> arm-elf-gcc -nostartfiles -L../at91 -o main.elf main.o flash.o
>  -bbinary image.bin -T./start.ld -larch
>
> [...]
>
> I get this error...
> main.o: file not recognized: File format not recognized
>
> [...]
>
> It looks like it's trying to interpret my .o files as binarires (when they
> should be elf object files, I think). How do I link the .o files as
> object files and the .bin file as a binary?

Try -belf32-arm (or whatever is the correct BFD target for ARM ELF, I'm not
sure) before main.o and see if it works better.

--
Michael Sokolov		Harhan Engineering Laboratory
Public Service Agent	International Free Computing Task Force
			International Engineering and Science Task Force
			615 N GOOD LATIMER EXPY STE #4
			DALLAS TX 75204-5852 USA

Phone: +1-214-824-7693 (Harhan Eng Lab office)
E-mail: msokolov@ivan.Harhan.ORG (ARPA TCP/SMTP) (UUCP coming soon)

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.elf to .bin (making an image)

[Shaun Jackman]

How do I create an image of an executable suitable for burning into flash?
I have a .elf, so a file converter would do. Or, alternatively how do I
get ld to create both output formats?

Second question... How do I include this binary dump into the rodata
segment of a different app? Convert the .bin to .h and include it in the
second app? (I think I remember seeing a util that would do this) Or, is
there a way to get an ld script to link the .bin in with a symbol at the
start of the dump? The second app will be burning flashes with this
binary.

Thanks,
Shaun



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