[ECOS] NEWBIE: Memory Layout on AEB-1 Rev B

[k e <ndgipper at yahoo dot com>]

Hi,
I'm need all the room in RAM that I can get
on the AEB-1 Rev B.
Can someone tell me what the following lines
in the memory layout files are for?


file: mlt_arm_aeb_ram.ldi
...
    __reserved_vectors = 0; . = __reserved_vectors + 0x1000;
    __reserved_not_mapped = ALIGN (0x1); . = __reserved_not_mapped + 0x7000;
    __reserved_for_rom = ALIGN (0x1); . = __reserved_for_rom + 0x4000;
...

file: mlt_arm_aeb_ram.h
...
extern char CYG_LABEL_NAME (_reserved_vectors) [];
#define CYGMEM_SECTION_reserved_vectors (CYG_LABEL_NAME (_reserved_vectors))
#define CYGMEM_SECTION_reserved_vectors_SIZE (0x1000)
extern char CYG_LABEL_NAME (_reserved_not_mapped) [];
#define CYGMEM_SECTION_reserved_not_mapped (CYG_LABEL_NAME (_reserved_not_mapped))
#define CYGMEM_SECTION_reserved_not_mapped_SIZE (0x7000)
extern char CYG_LABEL_NAME (_reserved_for_rom) [];
#define CYGMEM_SECTION_reserved_for_rom (CYG_LABEL_NAME (_reserved_for_rom))
#define CYGMEM_SECTION_reserved_for_rom_SIZE (0x4000)
...

file: mlt_arm_aeb_ram.mlt
...
section reserved_vectors 1000 1 0 0 1 1 1 1 0 0 reserved_not_mapped reserved_not_mapped !
section reserved_not_mapped 7000 1 0 0 0 1 0 1 reserved_for_rom reserved_for_rom !
section reserved_for_rom 4000 1 0 0 0 1 0 1 rom_vectors rom_vectors !
section rom_vectors 0 4 0 1 0 1 0 1 text text !
...


Specifically,
the actual code section (text) starts at 0x0C000.
I'd like to shove this down in memory to use up
any room that I can.  Or at least know what goes into
the "reserved_not_mapped", etc sections so that I
can shrink the size of any memory that's not used.
FYI, I don't use GDB at all.  If any of this
space if for GDB stuff, then I'm ok losing that space.
FYI, I'm using ecos-1.3.1
I'd like to stay with that since I have stuff working
rather than spend time thrashing around with the CVS
image.

If what I'm asking makes sense, please provide an 
example of what I'd need to change in the above
files before re-configuring ecos.

Again, what I'm after is more usable RAM.
And learning what all these sections are for would
be nice too.
As you can probably tell, I'm REALLY new to the ld
process.

Thanks a bundle for any help you can provide.

The Gipp

__________________________________________________
Do You Yahoo!?
Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/