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Observer
Observer
2,537 Views
Registered: ‎06-15-2010

initramfs for noMMU kernel

Hi

 

As my tests show, addition of MMU to Microblaze hardware, increases device resource usage for slices to up to 8% of a Spartan-3E1600 device.

 

In addition MMU also consumes one block memory.

 

Suppose that, we want to have linux on over embedded FPGA based system with minimum possible resource usage. And so, as one step I want to remove MMU completely, of course I know I will lose a part of my Microblaze performance. but it is not important for us.

 

I could bring up the linux from Xilinx git tree in noMMU mode completely. The problem is, the provided initial ramdisk, is created for a MMU enabled system.

 

Do we have access to any nonMMU initramfs image?

What is your suggestion if I want to build a noMMU root file system, myself?

 

Regards

Mohammad Sadegh Sadri.

 

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Xilinx Employee
Xilinx Employee
2,525 Views
Registered: ‎09-10-2008

Hi Mohammed,

 

sorry but you're on your own there as we don't do any no MMU support.

 

Thanks.

 

Petalogix might have something.

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