[ECOS] Memory map for EDB7212 with eCos?

[ECOS] Memory map for EDB7212 with eCos?

[Lewin A.R.W. Edwards]

How does eCos relayout the memory map of the EDB7212? The default mapping 
for the NAND flash is at 0x10000000 according to Cirrus Logic, but writing 
to this location does not select the NAND flash/SmartMedia interface 
(Verified by putting a scope on the appropriate chip select output - it's 
not getting pinged).
=== Lewin A.R.W. Edwards (Embedded Engineer)
Work: http://www.digi-frame.com/
Personal: http://www.zws.com/ and http://www.larwe.com/

RE: [ECOS] Memory map for EDB7212 with eCos?

[Gary Thomas]

On 06-Dec-2000 Lewin A.R.W. Edwards wrote:
> How does eCos relayout the memory map of the EDB7212? The default mapping 
> for the NAND flash is at 0x10000000 according to Cirrus Logic, but writing 
> to this location does not select the NAND flash/SmartMedia interface 
> (Verified by putting a scope on the appropriate chip select output - it's 
> not getting pinged).
> === Lewin A.R.W. Edwards (Embedded Engineer)
> Work: http://www.digi-frame.com/
> Personal: http://www.zws.com/ and http://www.larwe.com/

From the sources (hal/arm/edb7xxx/current/include/hal_platform_setup.h)
//
// Memory map - set up by ROM (GDB stubs)
//
// Region        Logical Address              Physical Address        
//   DRAM          0x00000000..0x00xFFFFF        0xC00x0000  (see below)
//   Expansion 2   0x20000000                    0x20000000
//   Expansion 3   0x30000000                    0x30000000
//   PCMCIA 0      0x40000000                    0x40000000
//   PCMCIA 1      0x50000000                    0x50000000
//   SRAM          0x60000000..0x600007FF        0x60000000
//   I/O           0x80000000                    0x80000000
//   MMU Tables                                  0xC00y0000
//   LCD buffer    0xC0000000..0xC001FFFF        0xC0000000
//   ROM           0xE0000000..0xEFFFFFFF        0x00000000
//   ROM           0xF0000000..0xFFFFFFFF        0x10000000

RE: [ECOS] Memory map for EDB7212 with eCos?

[Lewin A.R.W. Edwards]

Hello Gary,

> >From the sources (hal/arm/edb7xxx/current/include/hal_platform_setup.h)
>//   ROM           0xF0000000..0xFFFFFFFF        0x10000000

Thanks a lot for this. I was grepping for "SSFDC" and "SmartMedia" and 
"NAND" and "flash" and didn't find it. Then I went and looked in the 
hal/arm/edb7xxx/v1_3_1/support directory and found nothing appropriate (but 
some useful source that I must study).

=== Lewin A.R.W. Edwards (Embedded Engineer)
Work: http://www.digi-frame.com/
Personal: http://www.zws.com/ and http://www.larwe.com/