[U-Boot-Users] Debugging U-Boot Under DDD

[VanBaren, Gerald (AGRE)]

...also do an "objump -h" on your elf file to see where everything is being located.  Someone wants to locate a section in the wrong place or a section is way too large, but that is usually a symptom of locating a section in the wrong place or someone putting data in the wrong place.

Track down where that section location is defined and everybody that sticks stuff in that section looking for oddball locations (like 0x040000xx).  Quite often someone puts in a hardcoded address in the code, causing a section to get really, really large.

I did a quick search and it looks like the common TEXT_BASE is 0x40000000 (not 0x04000000) so I may be wrong on that one.

gvb


> -----Original Message-----
> From: Talib Alim [mailto:talibalm at hotmail.com]
> Sent: Tuesday, July 13, 2004 2:24 PM
> To: VanBaren, Gerald (AGRE); U-Boot List
> Subject: RE: [U-Boot-Users] Debugging U-Boot Under DDD
>
>
> This is the point, My flash is located at 0x02000000 and I erased this
> location before programming. But prog command for elf format file is
> trying to write to 0x04000000 and bin format writes to 0x02000000 ok.
>
> The difference b/w bin & elf is that obviouly elf is much bigger. The
> elf image is about 1mb.
>
> TA
> --- "VanBaren, Gerald (AGRE)" <Gerald.VanBaren at smiths-aerospace.com>
> wrote:
> >
> > Did you erase 0x04000000 (and following) before loading?
> >
> > Read those locations before and after programming and tell us what
> > they have in them.
> >
> > gvb
> >
> >
> > > -----Original Message-----
> > > From: u-boot-users-admin at lists.sourceforge.net
> > > [mailto:u-boot-users-admin at lists.sourceforge.net]On Behalf Of
> > > Talib Alim
> > > Sent: Tuesday, July 13, 2004 1:58 PM
> > > To: Wolfgang Denk; talibalm at hotmail.com
> > > Cc: U-Boot List
> > > Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> > >
> > >
> > > I tried loading elf file, this is what I get
> > >
> > > BDI>erase 0x02000000 chip
> > > Erasing flash at 0x02000000
> > > Erasing flash passed
> > > BDI>prog 0x02000000 u-boot elf
> > > Programming u-boot , please wait ....
> > > - File offset 0x00000078 to address 0x04000000 size 131408
> > > # Programming flash memory failed at 0x04000040
> > >
> > > TA
> > >
> > > --- Wolfgang Denk <wd at denx.de> wrote:
> > > > In message <20040713001816.61544.qmail at web50501.mail.yahoo.com>
> > you
> > > > wrote:
> > > > > I am using eldk
> > > >
> > > > OK.
> > > >
> > > > > I am using bin {& not elf}, apart from this problem, it seems
> > to
> > > > be
> > > > > doing fine.
> > > >
> > > > Try loading the ELF file instead - then GDB will  automatically
> > > > load
> > > > all required information about source files.
> > > >
> > > > Best regards,
> > > >
> > > > Wolfgang Denk
> > > >
> > > > --
> > > > Software Engineering:  Embedded and Realtime Systems,  Embedded
> > > > Linux
> > > > Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email:
> > > > wd at denx.de
> > > > The human mind treats a new idea the way the body  treats  a
> > > > strange
> > > > protein - it rejects it.                                 - P.
> > > > Medawar
> > > >
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