[ECOS] Configuration question

["Tom Deconinck" <t dot deconinck at gmail dot com>]

Hi,

I have some configuration questions.
I'm defining an eCos configuration for our own board, which uses an
Atmel at91sam7se cpu.
So I based my package on the CYGPKG_HAL_ARM_AT91 and CYGPKG_HAL_ARM_AT91SAM7.
I also defined my own HAL package, specific for my own board. In my
own package I would like to override some configuration settings,
which are already taken care of in the higher level
CYGPKG_HAL_ARM_AT91SAM7.
Basically, I would like to change the CYGHWR_MEMORY_LAYOUT related
settings to reflect my memory mapping, the at91sam7se has an external
bus, so I would like to update the linker scripts to use my external
sdram and flash memory.
And I would like to add a CYG_HAL_STARTUP type ("ext_mem" referring to
 my external memories).

As far as I know, I cannot just redefine those package or options
names, this causes name clashes.
Does anyone have any suggestion to fit this in the configuration
system in a clean way? I want to avoid duplicating the
CYGPKG_HAL_ARM_AT91SAM7 configuration settings for my own design.

Tom

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