Date: Tue, 14 Oct 2008 12:43:36 +0200 From: Gary Jennejohn <gary.jennejohn@freenet.de> To: Rafal Jaworowski <raj@semihalf.com> Cc: freebsd-embedded@FreeBSD.org Subject: Re: HOWTO: Build NSLU2 U-Boot on FreeBSD Message-ID: <20081014124336.16e25346@ernst.jennejohn.org> In-Reply-To: <48F4667F.4080900@semihalf.com> References: <48F099D4.2050302@incunabulum.net> <48F4667F.4080900@semihalf.com>
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On Tue, 14 Oct 2008 11:29:35 +0200 Rafal Jaworowski <raj@semihalf.com> wrote: > Bruce M. Simpson wrote: > > Building NSLU2 U-boot firmware on FreeBSD hosts > > *snip* > > > Toolchain setup > > > > cd /usr/ports/devel/cross-binutils > > env TGTARCH=arm TGTABI=rtems make install > > > > cd /usr/ports/devel/cross-gcc > > env TGTARCH=arm TGTABI=rtems make install > > > > Get stas@FreeBSD.org's updated u-boot tarball: > > uboot-atamantb.tar.bz2 > > Untar it > > *snip* > > > env CROSS_COMPILE=arm-rtems- gmake distclean > > env CROSS_COMPILE=arm-rtems- gmake nslu2_config > > env CROSS_COMPILE=arm-rtems- gmake > > In general it should be possible to build U-Boot with our in-tree cross tool > chain. I recall Marcel got this working with some patches against U-Boot build > scripts, tools or makefiles; they were even accepted to main line U-Boot IIRC. > > There's also another approach possible: using U-Boot native and ready to use > build tools (ELDK) via Linux compat layer. I was working in such setup some > time ago and it was fine with some minor tweaks because of differences in some > of the GNU tools and ours. FWIW, my old notes on this from FreeBSD 5.x/6 > timeframe can be found here: > http://www.denx.de/wiki/view/DULG/ELDKInstallationUnderFreeBSD > Doesn't work anymore with more recent versions of u-boot. It tries to generate some native utilities which use Linux headers which conflict with the native FreeBSD headers. Judicious tweeking of include paths may solve the problem, but I only spent a little time on it. This is an unfortunate trend which I've also observed with Linux. It is still possible to cross compile Linux 2.4.25 under FreeBSD, but the Linux (and u-boot) developers keep adding more and more Linux-specific utilities so that e.g. Linux 2.6.* _must_ be compiled under Linux. BTW I always use the ELDK since I work as a consultant for DENX. --- Gary Jennejohn
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