linux - Get SD card serial / oemid from U-boot on RaspberryPi3 -

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i'm using u-boot on raspberry pi 3 , want obtain sd card oemid or serial number.

"normally" can done accessing /sys/block/mmcblk0/device/ or running udevadm info -a -n /dev/sdx on linux site, wonder:

is possible via u-boot (i.e. without running kernel) ?

so, in order enough information device able use root=partuuid= syntax linux kernel need have few commands enabled in u-boot. functional example of can found here. shell prompt command just:

=> part uuid interface device:partition variable-to-store-in

and requires have config_cmd_part set in turn requires config_partition_uuids.


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