Date: Sun, 17 Dec 2017 10:29:40 -0700 From: Ian Lepore <ian@freebsd.org> To: Sergey Manucharian <sm@ara-ler.com>, freebsd-arm@freebsd.org Subject: Re: ubldr vs ubldr.bin? Message-ID: <1513531780.95072.29.camel@freebsd.org> In-Reply-To: <20171111015041.GC1974@dendrobates.araler.com> References: <op.x1tfyc2ckndu52@53555a16.cm-6-6b.dynamic.ziggo.nl> <1436978285.1334.335.camel@freebsd.org> <20171111015041.GC1974@dendrobates.araler.com>
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On Fri, 2017-11-10 at 18:50 -0700, Sergey Manucharian wrote:
> Excerpts from Ian Lepore's message from Wed 15-Jul-15 10:38:
> >
> > On Wed, 2015-07-15 at 15:04 +0200, Ronald Klop wrote:
> > >
> > > Hello,
> > >
> > > What is the difference between ubldr and ubldr.bin?
> > >
> > > [root at sheeva ~]# ls -l /boot/ubldr*
> > > -r--r--r-- 1 root wheel 283086 Jul 11 00:34 /boot/ubldr
> > > -r--r--r-- 1 root wheel 235212 Jul 11 00:34 /boot/ubldr.bin
> > > -r-xr-xr-x 1 root wheel 214432 Jan 8 2015 /boot/ubldr.old
> > >
> > >
> > > Regards,
> > > Ronald.
> > ubldr is an elf binary that must be loaded at the address it was built
> > for (the UBLDR_LOADADDR address). ubldr.bin is a raw executable image
> > (no elf headers) which is self-relocating and can be loaded at any
> > address. ubldr is launched with the bootelf command, and thus requires
> > CONFIG_ELF in u-boot. ubldr.bin is launched with "go ${loadaddr}".
> >
> > So all in all, ubldr.bin is the new way of things, and ubldr is still
> > being built only for compatibility with people that have older u-boot
> > installed. (Right now that's pretty much everybody, because I haven't
> > actually updated any of the u-boot ports yet to use ubldr.bin, because
> > I've been too busy with $work.)
> >
> > The big thing ubldr.bin gets us is a common armv6[hf] userland that runs
> > on any board. Previously the single userland difference between various
> > arm boards is that UBLDR_LOADADDR was different for each board.
> >
> > -- Ian
> Sorry for the resurrection of this old thread.
>
> Why the mainstream u-boot cannot run ubldr.bin? Or am I missing
> something?
>
> I tried with BeagleBone Black and it doesn't work, resets CPU when
> trying:
>
> load mmc 0:1 0x82000000 ubldr.bin
> go 0x82000000
>
> -S
>
Some bug fixes from PR 224008 were applied recently (about a week ago),
I wonder if they might fix the problem you're seeing?
-- Ian
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