Date: Fri, 10 Nov 2017 18:50:41 -0700 From: Sergey Manucharian <sm@ara-ler.com> To: Ian Lepore <ian@freebsd.org>, freebsd-arm@freebsd.org Subject: Re: ubldr vs ubldr.bin? Message-ID: <20171111015041.GC1974@dendrobates.araler.com> In-Reply-To: <1436978285.1334.335.camel@freebsd.org> References: <op.x1tfyc2ckndu52@53555a16.cm-6-6b.dynamic.ziggo.nl> <1436978285.1334.335.camel@freebsd.org>
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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
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