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Altera_Forum's avatar
Altera_Forum
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21 years ago

uClinux .data segment in SDRAM?

For a number of reasons, I'd like to run my kernel in SRAM but allocate data memory (i.e. socket buffers) in SDRAM. This seems possible with a NIOS 'Hello World' application, or the like...
Altera_Forum's avatar
Altera_Forum
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20 years ago

Hi Wentao,

I'm back on this problem after some more immediate issues. Your last suggestion seems to make no difference. At this point, I'm looking for the simplest solution to this problem. It seems like there is a general problem with allocating memory below where the kernel lives.

My question is, what would be the ideal physical mapping for what I am trying to do? I can move SRAM, SDRAM, FLASH, etc wherever you recommend. I'm thinking the easier solution might be to remap the system in a way that the kernel can deal with, rather than hacking at the kernel to get it to use my mapping. Any thoughts? Again, my requirement is that the kernel runs from SRAM but allocates memory from SDRAM.

Thanks again,

Ryan