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mailing list for the eCos project.
RE: RedBoot porting problem
- To: ecos-discuss at sourceware dot cygnus dot com
- Subject: RE: [ECOS] RedBoot porting problem
- From: Jeremy Lin <chienyul at yahoo dot com>
- Date: Thu, 14 Jun 2001 10:52:50 -0700 (PDT)
Hi,
Thanks for all the replies. I will keep trying.
Here is how I test Redboot on my board so far,
I have a working gdb stub to boot up the board, then I
load the redboot image file (redboot.img), which is compiled
to run from RAM, by JTAG ICE and run it. The reason I need
to use JTAG instead of the existing gdb stub in flash to load
it is I have only one serial port on board.
Then if it's working, since I don't have a flash programming
driver for my board, I'm going to burn the ROM-Start image to EEPROM.
Thanks again!
Jeremy Lin
--- Gary Thomas <gthomas@cambridge.redhat.com> wrote:
>
> On 13-Jun-2001 Jeremy Lin wrote:
> > Hi,
> > I use CVS version of eCos for my target.
> > Now I have a working HAL and serial driver for
> > my platform(SAMSUNG KS32C50100 based), and
> > the gdb stub works fine on my board.
> > I was trying to port redboot to my platform. I
> > tried to compile it by choosing template "redboot"
> > and it compiled successfully; I also have a set of
> > ecm files which is copied from pid platform.
> > But when I load the redboot image file and run it,
> > instead of redboot banner, the serial port always
> > outputs a string like this "$T0a0f:00000000;0d:00000000;#f9",
> > just like what I got when using gdb stub.
> > Does that mean it still in gdb protocol mode? How can I get
> > the redboot mode? Please give me a hint..
>
> It means that something went wrong when you started it up. Are
> you running this from ROM or RAM?
>
> You can get a clue by simply connecting to your board via GDB
> and getting a backtrace and register info. This may give you
> an idea why it is failing.
>
> % arm-elf-gdb -nw redboot.elf
> (gdb) set remotebaud 38400
> (gdb) tar rem /dev/ttyS0
> (gdb) info reg
> (gdb) bt
>
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