Please use dtb fsl-ls1046a-rdb-usdpaa-shared.dtb provided in Linux Kernel.
setenv othbootargs console=ttyS0,115200 earlycon=uart8250,mmio,0x21c0500 ramdisk_size=0x40000000 bportals=s0 qportals=s0 isolcpus=1-3 default_hugepagesz=2m hugepagesz=2m hugepages=448 nmi_watchdog=0 rcupdate.rcu_cpu_stall_suppress=1
root@localhost:~# fmc -x
root@localhost:~# mkdir -p /mnt/hugepages
root@localhost:~# mount -t hugetlbfs none /mnt/hugepages
root@localhost:~# export DPAA_FMC_MODE=1
root@localhost:~# fmc -c /usr/local/dpdk/dpaa/usdpaa_config_ls1046_shared_24g.xml -p /usr/local/dpdk/dpaa/usdpaa_policy_24g_classif_udp_ipsec_1queue.xml -a
root@localhost:~# dpdk-testpmd -c 0x3 -- -i --forward-mode=rxonly --rxq=1
EAL: Detected 4 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available hugepages reported in hugepages-32768kB
EAL: No available hugepages reported in hugepages-64kB
EAL: No available hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: DPAA Bus Detected
PMD: Using FMC script mode,RXQs will be setup according to FMC configuration
PMD: net: dpaa: fm1-mac3: 00:e0:0c:00:aa:00
PMD: net: dpaa: fm1-mac4: 00:e0:0c:00:aa:01
PMD: net: dpaa: fm1-mac5: 00:e0:0c:00:aa:02
PMD: net: dpaa: fm1-mac6: 00:e0:0c:00:aa:03
PMD: net: dpaa: fm1-mac9: 00:e0:0c:00:aa:04
PMD: net: dpaa: fm1-mac10: 00:e0:0c:00:aa:05
PMD: dpaa_sec-1 cryptodev init
PMD: dpaa_sec-2 cryptodev init
PMD: dpaa_sec-3 cryptodev init
PMD: dpaa_sec-4 cryptodev init
EAL: No legacy callbacks, legacy socket not created
Interactive-mode selected
Set rxonly packet forwarding mode
testpmd: create a new mbuf pool <mb_pool_0>: n=155456, size=2176, socket=0
testpmd: preferred mempool ops selected: dpaa
Configuring Port 0 (socket 0)
Port 0: link state change event
Port 0: 00:E0:0C:00:AA:00
Configuring Port 1 (socket 0)
Port 1: link state change event
Port 1: 00:E0:0C:00:AA:01
Configuring Port 2 (socket 0)
Port 2: link state change event
Port 2: 00:E0:0C:00:AA:02
Configuring Port 3 (socket 0)
Port 3: link state change event
Port 3: 00:E0:0C:00:AA:03
Configuring Port 4 (socket 0)
Port 4: link state change event
Port 4: 00:E0:0C:00:AA:04
Configuring Port 5 (socket 0)
Port 5: link state change event
Port 5: 00:E0:0C:00:AA:05
Checking link statuses...
Done
testpmd>