A64 boot from eMMC

[vikas]

hello,
I am trying to boot from eMMC(16GB). I am using A64-OLinuXino-bionic-base-20201008-215447.img through SD card(8GB) to boot A64. But when used olinuxino-sd-to-emmc to write SD card contents to emmc, no boot. Got error:

U-Boot SPL 2020.01+olimex-1-20200701.165703 (Jan 30 2020 - 11:10:18 +0000)
DRAM: 1024 MiB
MMC Device 1 not found
Trying to boot from MMC2
MMC Device 1 not found
spl: could not find mmc device 1. error: -19
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

I also tried dd command to write .img file, got same error as above.

Please check and suggest.

Regards,
Vikas

[LubOlimex]

There are newer images now (A64-OLinuXino-bionic-base-20201029-135151.img.7z), also when you first boot make sure to have access to internet and update and upgrade with:

apt update
apt upgrade

After the update and upgrade test the eMMC installation again and let me know how it goes.

[vikas]

Hello,

After update and upgrade. Now When run command to write eMMC get error:

root@a64-olinuxino:~# olinuxino-sd-to-emmc

Detecting board...

Detecting the root device...
Root partition:         /dev/mmcblk0p1
Root device:            /dev/mmcblk0

Detecting eMMC device...
eMMC partition:         /dev/mmcblk1p1
eMMC device:            /dev/mmcblk1

Checking disk size...
Required blocks:        9084640
Available blocks:       30535680

Unmount target device...
umount: /dev/mmcblk1p1: not mounted.

Copying MBR record...
[  128.306090] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  128.329316] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  128.352658] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  128.376045] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  128.399550] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  128.461014] sunxi-mmc 1c11000.mmc: data error, sending stop command
[  129.465564] sunxi-mmc 1c11000.mmc: send stop command failed

Earlier, step #root@a64-olinuxino:~# olinuxino-sd-to-emmc, used to get complete, but now  "sunxi-mmc 1c11000.mmc: data error"

Best Regards,
Vikas

[LubOlimex]

Did you try to run it a few times or just once? Can you try to run it a few times? Also after the first power up and update and upgrade, please reboot the board (if you haven't already).

[vikas]

Hello,

After update,upgrade,reboot, I tried  olinuxino-sd-to-emmc and reboot multiple times, but failed at every time with log sunxi-mmc 1c11000.mmc: data error, sending stop command

[LubOlimex]

Indeed, it seems currently the software support for that eMMC is not properly working in the latest Olimex images. The developers seem to be aware and are working on a solution since they don't want to lower the speed. The only workaround currently is modifying the position of the PWR_PC1 jumper at the bottom that would make the eMMC work at 3.3V instead of 1.8V. However, working at 3.3V also means that the fastest speeds would be unreachable.

Edit: modifying PWR_PC1 is kind of tricky and probably requires advanced soldering experience - it requires disconnecting the original position (cutting) and soldering together the pads of the new position. I wouldn't recommend it if you are not certain in your soldering skills.