[U-Boot] [PATCH v3] Switch from archive libraries to partial linking

[Sebastien Carlier]

Dear Wolfgang,

On 2010-11-19 12:11:12, Wolfgang Denk wrote:
> 
> In message <sebastien.carlier at f67ce90ecc8846695b88fb9ac74f99d56979b90a> you wrote:
> > 
> The used flash chips are so-called bootom boot sector types; using two
> chips in 16 bit config in parallel (to get a 32 bit bus) we see this
> flash layout:
> 
>   Sector Start Addresses:
>   40000000   RO   40008000   RO   4000C000   RO   40010000   RO   40020000   RO 
>   40040000   RO   40060000 E      40080000 E      400A0000 E      400C0000 E    
>   400E0000 E      40100000 E      40120000 E      40140000 E      40160000 E    
>   40180000 E      401A0000 E      401C0000 E      401E0000 E      40200000 E    
>   40220000 E      40240000 E      40260000 E      40280000 E      402A0000 E    
>   402C0000 E      402E0000 E      40300000 E      40320000 E      40340000 E    
>   40360000 E      40380000 E      403A0000 E      403C0000 E      403E0000 E    
> 
> So erase block sizes are 32 k, 16 k, 16 k, 64 k, 128 k, 128 k, 128 k, ...

Oh, I see.  I wasn't aware that some flash chips had non-uniform sector
sizes.  It makes perfect sense not to waste much of a larger sector to
store the environment.  Thank you very much for clarifying!

> The linker script squeezes as many as possible objects into the first
> 32 kB ssector, then creates a gap for the environment, and ten
> continues to place the remaining objects starting at offset 40010000.

Is it not possible to tell the linker to place a made-up 32 kB symbol
within the text section at address 0x40008000?  I am not familiar enough
with ld to tell whether there are restrictions for setting the absolute
address of a symbol that would disallow it in this case.

Regards,
-- 
Sebastien