assembly - Custom Raspberry Pi OS File System -


i trying write os raspberry pi assembly code , want implement file system. cannot find out how read or write data sd card.

nothing trivial , time consuming.

you need study e.mmc standard jedec understand how host , card side works. can documents free site registration.

you need understand how connection made emmc host interface. lead work spi.

best what's available open source projects linux or uboot.


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