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Altera_Forum's avatar
Altera_Forum
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11 years ago

cycloneive boot from sd card

Hello to all! I'm working with a cycloneive board. I use the program university avalon sd card interface, and i can read and write a file (fat16) from/to a 2GB sd card. I would copy a .bin ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Read the program sections from the elf file itself isn't that hard (they are designed for simple loaders to process).

'objdump -p' will list the headers.

So I would put the unmodified 'elf' file onto the SD card.

For simple code that will read from FAT16(and FAT12) you could look at something like the NetBSD fatboot.S file.

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/i386/stand/fatboot/fatboot.s?annotate=1.4&only_with_tag=main

It will need translating from x86 asm and needs a 'read sectors' command.