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Altera_Forum
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15 years ago

Design with MMU and on my de2 board

I build a design with MMU and tried it on my de2 board. When I compile uclinux for my hardware platform I encounter different problems. First I make a board definition for my de2. In folde...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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hi,

it is described in this document (http://nioswiki.com/@api/deki/files/342/=opensource_linux_niosii_user_guide_-_fixed_toc.doc) that 8MB SDRAM can run nios2-mmu, but in fact I have failed to do this on DE0 board by running Linux directly on SDRAM with 'linux.initramfs.gz' or 'zImage.initramfs.gz'. But there is still a way out: one of the advantages of MMU is that the system(or app) can run on RAM even it is not enough. The system can use virtual address to deal with this problem. So, what I want to say is you can try to boot Linux from other devices such as CF Card(True IDE mode) or SD Card.

Maybe this method can solve the problem. When I finish my work on hand, I will try.

Regards,

--Smarter.UJS

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I build and run U-boot on my DE2 board. To get u-boot compiled was a hard job. A lot of reading (I must say that u-boot was new to me), but at the end it was simple to compile u-boot.

At this point I have the network support up and running. Now I'm working on the SD card.