eMMC OS bring-up: Best method to write SoC HPS image to embedded MMC memory

hi!!

You will just find one JTAG interface, because both parts(FPGA and HPS) are in a daisy chain. Like this JTAG_in -> FPGA -> HPS ->JTAG_out

So!! there are different methods to copy your image in your eMMC.

1) If your eMMC already contain a linux

-Just use dd and copy your image to dev/mmcblk0 (ex. using ssh)

2) If theres nothing on your eMMC

-You have to place preloader and uboot in the FPGA, boot until uboot from FPGA and then boot from there using tftp&nfs! And at the end, copy your image to dev/mcblk0

or -Using a JTAG interface software like openocd! Problem is: You have to implement the software part to control the eMMC controller over JTAG. And then write your image over JTAG.

bye

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