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Altera_Forum
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20 years ago

uClinux boot from epcs ?

If someone like me wants to run uCLinux on a Nios2 but the fpga must not be a bga type then the biggest fpga available is EP2C20 with QFP 240 pins. That one can be handsoldered http://forum.niosforu...
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Altera_Forum
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20 years ago

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originally posted by smcnutt@Feb 22 2006, 04:43 PM

hi michael,

> booting uclinux from epcs. but not the whole uclinux. i think of a smal bootloader

> like lilo (grub under debian) that loads the rest from a compact flash card that

> can't be big enough

you can use u-boot in such a design ... as it supports cf as well as epcs. if your

epcs is large enough, you could fit the entire kernel ... u-boot can load, decompress,

and boot a gzip/bzip kernel image (same goes for cf of course).

currently, i load u-boot from epcs and then boot a gzipped kernel image (~520 kb)

either from parallel flash, a tftp server, or an nfs server. same goes for the cramfs

filesystem (which gets stuffed into sdram as well).

regards,

--scott

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