[U-Boot] [RAM MEMORY] Hardware Replacement.

[Rodolfo Oliveira]

Hi,
I'm upgrading my hardware RAM, but I found a problem.
After replacing the RAM MT48LC32M4A2 by IS42S16800E the following message
appeared:
Memory (date line) error at 00000000, wrote aaaaaaaaaaaaaaaa, read
89abcdef89abc def!

Does anyone know what problem is this?
I looked at the two memories and ram it are similar.

Thanks,
Rodolfo Romão.

2010/11/16 Mike Frysinger <vapier at gentoo.org>

> On Tuesday, November 16, 2010 09:58:48 Detlev Zundel wrote:
> > > On Monday, November 15, 2010 07:13:03 Sebastien Carlier wrote:
> > >> On 2010-11-15 11:54:07, Wolfgang Denk wrote:
> > >> > I notice that the patch affects the size of the resulting U-Boot
> > >> > images.
> > >> >
> > >> > For example:
> > >> >
> > >> > Configuring for MiniFAP - Board: TQM5200, Options: MINIFAP
> > >> >
> > >> >    text    data     bss     dec     hex filename
> > >> >
> > >> >  358144   35208  303248  696600   aa118 ./u-boot before
> > >> >  361340   35824  303332  700496   ab050 ./u-boot after
> > >> >
> > >> > -------------------------------
> > >> >
> > >> >          Delta:   +3896 Bytes
> > >> >
> > >> > For other boards it's only a few hundred bytes, but why do we see
> > >> > such big increase here?
> > >>
> > >> In this case, these libraries contribute 3260 bytes in unused
> > >> definitions:
> > >>
> > >> In each case, a whole object file contains exactly the unused
> > >> definitions, and could be excluded in the respective Makefile.
> > >
> > > or just use -ffunction-sections/-fdata-sections/-Wl,--gc-sections and
> > > dont worry about it.  which is what we do for the Blackfin port.
> >
> > If you do worry, you can use the "--gc-sections" together with
> > "--print-gc-sections" to actually find out what is unused[1].
>
> the u-boot.map also mentions which input sections are discarded without
> needing --print-gc-sections ...
> -mike
>
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>


-- 

[]´s



===================================
Rodolfo R. de O. Neto, Eng. , MBA
Engenheiro de computação
MBA - Governança em TI
E-mail: rodolforomao at gmail.com
===================================