Problem with AR# 67157 Zynq UltraScale+ MPSoC: eMMC Programming Solutions

[x_abacadaba]

Hi, I am attempting to use the method described in AR# 67157 to setup my emmc image for boot. I've run into an issue with the solution as it is posted; when I complete step "3b" and issue the command 'con' in xsdb, I never see any output in the serial console from u-boot, so I am unable to complete the rest of the steps. The output from xsdb is: "Info: Cortex-A53 #0 (target 9) Running". I do see the output in the serial console when the zynqmp_fsbl.elf is run, so I at least know that it should work as described. I've subsequently attempted to do the same steps and skip the "dow -data emmc.img 0x8000" step in order to see if I can just run u-boot and u-boot still doesn't produce output. Can anyone offer any insight as to what the issue might be with this AR? Has anyone else managed to get this to work? Thanks

[denist · Accepted solution]

UG1137 on page 152 has the latest script to execute u-boot from tcl.

Also,

In most recent Vivado HW Manager releases, you can program an initial boot.bin in the eMMC using the GUI.

Can you try that?

[x_abacadaba]

Thanks I'll have a look at UG1137 and post an update if it fixes the issue that I am seeing.  I did program the eMMC using HW manager however the sizes of the partitions that it defaults to are wrong for my configuration.  I'm placing rootfs on an ext4 partition so I want that partition to take up the majority of the emmc; however when I program the eMMC using hardware manager almost the entire eMMC is filled with the FAT partition.  Do you know a way to specify the sizes for the partitions that it creates?

[denist]

Not really. The best approach is to create a partition and place a boot.bin+Linux image in it. Boot to Linux and then take advantage of fdisk and mkfs to create the partititon of the size and type you want.

[x_abacadaba]

The process in UG1137 works for me.  I don't presently have working ethernet on this hardware which is the reason for using this method.  I like the fact that I can generate the image on the host then upload it and program it into the emmc.  Thanks for you help.