Never mind. I spoke to soon. Its not working.
Marvell>> printenv
baudrate=115200
bootargs=console=ttyMV0,115200 earlycon=ar3700_uart,0xd0012000 root=/dev/sda2 rw rootwait
bootcmd=scsi scan; scsi dev 0; run get_images; booti 0x02000000 - 0x01000000 - 0x03000000
bootdelay=2
ethact=neta0
ethaddr=F0:AD:4E:03:6B:D7
get_images=ext4load scsi 0:1 0x2000000 /Image && ext4load scsi 0:1 0x1000000 /armada-3720-espressobin.dtb && ext4load scsi 0:1 0x03000000 /uInitrd
stderr=serial
stdin=serial
stdout=serial
And when I tweak my root= line…
[ 3.527499] sd 0:0:0:0: [sda] Write Protect is off
[ 3.527570] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 3.555981] sda: sda1 sda2
[ 3.559521] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 3.564699] Waiting for root device UUID=bb467711-2afb-48e1-97bc-cdd9163eb4bb...
EDIT: N00b mistake… Please hold while I compile initrd support into my kernel.