Hi,
I have some questions about u-boot for a project I'm working on. The uP is an ARM9.
I am wondering if it's possible to use u-boot to two things in one boot-up:
- to create a root filesystem on an SD card (I'm not interested in the secure digital functionality)
- to boot Linux using a Linux kernel image from inside this newly created root filesystem
Another question is how small can a functional rootfs be? I am hoping I can get it under 20 MB.
And a final question is: Is it possible to have a read-only filesystem? Or do some things (ie. /dev devices) have to be read/write?
Thanks, Pete