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RE: memory map question
- To: "Simpkins, Andy" <Andy dot Simpkins at Transcomm dot uk dot com>
- Subject: RE: [ECOS] memory map question
- From: Gary Thomas <gthomas at redhat dot com>
- Date: Fri, 24 Aug 2001 08:16:28 -0600 (MDT)
- Cc: ecos-discuss at sourceware dot cygnus dot com
- Organization: Red Hat, Inc.
On 24-Aug-2001 Simpkins, Andy wrote:
> Hi there,
>
> I am trying to map some data to a specific address in FLASH on my custom
> target board (ARM7TDMI core)
>
> The data is defined as
>
> unsigned char globalArchive[] __attribute__ ((section (".ivoryDataStore")))
> =
> {0x04, 0x18, 0x00, 0x00, 0x81);
>
>
> I have added the following to arm.ld
>
>#define SECTION_ivoryDataStore(_region_, _vma_, _lma_) \
> .ivoryDataStore _vma_ : _lma_ \
> { FORCE_OUTPUT; *(.ivoryDataStore) } \
> > _region_
>
> And have attempted to define ivoryDataStore in my memory map of the config
> tool (1.3.1)
> I kind of hoped that the name would have shown up in the drop down box for
> Linker-defined, as it didn't I had to specify it as user defined...
>
> i.e.
> Name - User-defined: ivoryDataStore
> - Known Size: 0x2000
> Final Location (VMA) - Absolute: 0xe0000
>
> however when I compile my code I get the following :
>
>
> arm-elf-gcc *.o ../../API/*/*.o -L /i/eCOSbuilds/a166_install/lib/
> -Ttarget.ld -nostdlib -Xlinker -Map -Xlinker mapfile.txt
> /tools/H-i686-pc-cygwin/arm-elf/bin/ld: warning: no memory region specified
> for
> section `.ivoryDataStore'
Does .ivoryDataStore end up in your "target.ld" file (the linker script)? If
not, it's a problem with the macros & sections.