From: Grant Edwards <grante@visi.com>
To: Dave Airlie <airlied@parthus.com>
Cc: ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] PID ROM and eCos
Date: Wed, 24 Jan 2001 07:42:00 -0000 [thread overview]
Message-ID: <20010124094608.A1646@visi.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0101241502560.25355-200000@platinum.limerick.sslinc.com>
On Wed, Jan 24, 2001 at 03:15:20PM +0000, Dave Airlie wrote:
> So my question is how feasible is to build eCos for RAM, and
> build a small routine to link against it that boots up and
> copies all of eCos into RAM and starts it ?
Piece of cake.
> Could I use something like redboot or anything like that for
> this purpose or is a platform where this has been done ..
Sure, RedBoot would work great, but's it's overkill if all you
want is to copy a single fixed image to RAM and execute it.
That only takes 10-15 lines of assembly language.
You'll probably also want to re-map memory so that RAM is at
address 0 instead of ROM (if possible). You can run eCos from
RAM with ROM at 0, but it's a pain since you'll have to hack up
the vectors.S file in hal/arm/arch/.
--
Grant Edwards
grante@visi.com
next prev parent reply other threads:[~2001-01-24 7:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-24 7:12 Dave Airlie
2001-01-24 7:27 ` Andrew Lunn
2001-01-24 7:42 ` Grant Edwards [this message]
2001-01-24 8:02 ` Gary Thomas
2001-01-24 11:08 ` Jonathan Larmour
2001-01-24 11:15 ` Dave Airlie
2001-01-24 11:20 ` Gary Thomas
2001-01-24 11:39 ` Jonathan Larmour
2001-01-25 9:53 ` Dave Airlie
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