This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
Redboot from scratch
- From: "Anthony Tonizzo" <atonizzo at lycos dot com>
- To: ecos-discuss at sources dot redhat dot com
- Date: Tue, 05 Oct 2004 07:37:09 -0800
- Subject: [ECOS] Redboot from scratch
Hi:
I am about to boot a new design, and I have no way of pulling the
flash chips for programming but I do have a "wiggler" type of
device, that I can use to load and run an elf program into my target.
Before using an in-circuit flash programmer I considered the option
of compiling a RAM version of RedBoot, download that with the Wiggler
and then using this version of RedBoot to store a more permanent
ROM version in flash. This way I can take advantage of the good
support that RedBoot already has for different flash devices.
I tried to do this, but I was not successful. I do not seem to be
able to compile Redboot so that, when downloaded, it locates itself at
the start of memory (I am using a PowerPC). There is always an offset
added to it, although the actual code seems to be compiled to run in
the right place (yes, I disassembled some of the early code...)
All the documentation I read seems to rely on the fact that the
target already has a working Redboot, or that is can be "flashed in"
by means of an expternal programmer.
Before I expend more effort into this, I would like to know if it is
even possible, and if it is, whether there is someone out that that
can share some ideas.
Thanks
Tony
--
_______________________________________________
Find what you are looking for with the Lycos Yellow Pages
http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss