From: Wolfgang Wegner <wolfgang@leila.ping.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] FPGA relocation/C environment
Date: Fri, 30 Oct 2009 14:11:12 +0100 [thread overview]
Message-ID: <20091030131112.GL3216@leila.ping.de> (raw)
In-Reply-To: <OFD5126377.8B92A36C-ONC125765E.00594B9B-C125765E.005B8418@transmode.se>
Hi,
thank you all for all the comments so far.
It seems I have at least 2 problems:
- my gcc (m68k-elf-gcc (Sourcery G++ Lite 4.3-208) 4.3.3) does not
produce correctly relocatable code; no matter if I give -fPIC or
not (-mrelocatable is not accepted at all), I do not get any
entries in .got2 or .fixup, only .got
However, there still may be anything wrong in my conclusion,
because I can use this compiler to compile uClinux-dist-20071107
and get working applications (which, as far as I understand, have
to be relocated at runtime, too, but I do not know if any of these
use such features as statically initialized function pointers that
I have in the U-Boot fpga code...).
- the current coldfire startup code (at least for MCF532x/MCF537x)
would not handle these sections even if they existed - however,
this seems to be rather easily (i.e. maybe even I could do it)
fixed, looking at the ppc examples.
I will first live with the problem (relocating the fpga struct pointers
in my own board code, where it is filled anyways - for coldfire,
gd->reloc_off is still present) and see if I can get hold of a better
gcc version.
I tried gcc-4.4.1, but was unable to compile one of U-Boot or uClinux,
so switched back to this one which I found to compile (old and current)
U-Boot, old uClinux _and_ support mcf5445x, which I am designing in
now...
Thank you and sorry for my stupid questions.
Regards,
Wolfgang
next prev parent reply other threads:[~2009-10-30 13:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-29 8:21 [U-Boot] FPGA relocation/C environment Wolfgang Wegner
2009-10-29 11:00 ` Wolfgang Denk
2009-10-29 12:04 ` Wolfgang Wegner
2009-10-29 13:08 ` Joakim Tjernlund
2009-10-29 13:41 ` Wolfgang Wegner
2009-10-29 14:22 ` Joakim Tjernlund
2009-10-29 15:00 ` Wolfgang Wegner
2009-10-29 15:44 ` Wolfgang Wegner
2009-10-29 16:39 ` Joakim Tjernlund
2009-10-30 13:11 ` Wolfgang Wegner [this message]
2009-10-30 23:16 ` Graeme Russ
2009-10-29 15:47 ` Joakim Tjernlund
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