[ECOS] ixp2400/flash endian problem

[Jonathan Larmour]

Aaron Richardson wrote:
> I am trying to bring in the Intel code for the ixp2400 into the current 
> version of redboot/ecos.

I should warn you that the Intel port is RHEPL'd and current RedBoot/eCos 
is GPL'd. Mixing code from both in one image may be legally problematic, 
and mixing it in the same file definitely is - they are legally 
incompatible licenses.

 >  I am having problems getting the flash to work
> properly and I cannot track down the issue.  I am basically getting the data 
> out of the flash in a swapped endian form.  I am using the current strata 
> flash code.  I have commented out the device check code in the init routine 
> and hard coded the correct values for now.  Here is what I get from fis:
> 
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> BdeR              0x000000C4  0x00000000  0x00000400  0x00000000
> tsySL me          0x0000FAC4  0x0000FAC4  0x00000200  0x00000000
> BdeR toofnoc      0x00F0FDC4  0x00F0FDC4  0x00100000  0x00000000
>  SIFeridrotc      0x0000FEC4  0x0000FEC4  0x00000200  0x00000000
> bder-tookcab      0x000010C4  0x000010C4  0x00000400  0x00000000
> RedBoot>
> 
> Intel is building with a compiler flag -mbig-endian and -D__ARMEB__.  If I 
> compile with these settings (and use their swap image program) I get the 
> output above.  However, If I remove both of these compiler options then I get 
> the following:
> 
> RedBoot> fis list
> Name              FLASH addr  Mem addr    Length      Entry point
> RedBoot           0x000000C4  0x00000000  0x00000400  0x00000000
> System Log        0x0000FAC4  0x0000FAC4  0x00000200  0x00000000
> RedBoot config    0x00F0FDC4  0x00F0FDC4  0x00100000  0x00000000
> FIS directory     0x0000FEC4  0x0000FEC4  0x00000200  0x00000000
> redboot-backup    0x000010C4  0x000010C4  0x00000400  0x00000000
> 
> The names are not swapped any more, but the addresses are still munged.  Any 
> ideas on how to fix this?

At a guess it may be because the flash directory was written by the 
big-endian redboot. You might get more consistent results if the flash 
directory was written by the little-endian redboot.

Jifl
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