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Altera_Forum's avatar
Altera_Forum
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11 years ago

Booting uClinux from SD-Card possible?

Hello, i am new on developing with Nios II an uClinux. I have got an DE2-115 Board and was able to set up a Nios II Processor, build the kernel and run it. Now i wonder if it is possible to p...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Thank you for the reply.

Your project is complex, so I have a few questions:

1. I added a "SPI (3 Wire Serial)" component to my Qsys-Design to connect to the mmc/sd. Are there more changes to do there?

2. When I use the "sopc2dts" tool, are there any changes to make?

3. Due the "make menuconfig" witch options shell I select?

4. How do I prepare the SD-Card? Witch partitions are needed and how big should i make them?

5. What Files do I need on the SD-Card? When I make the Kernel I get the "zImage" but what to do with it and do I need the "u-boot" and how do I do that?

EDIT:

I found this document (http://uuoc.org/uclinux_nios2_custom_hardware.pdf) and did all the steps. But I cant see anything on the console.

I guess either the CPU can't read from the SD-Card or doesn't now to read from there :/