user@UbuntuLTS2:~$ picocom -b 115200 /dev/ttyUSB1 picocom v2.2 port is : /dev/ttyUSB1 flowcontrol : none baudrate is : 115200 parity is : none databits are : 8 stopbits are : 1 escape is : C-a local echo is : no noinit is : no noreset is : no nolock is : no send_cmd is : sz -vv receive_cmd is : rz -vv -E imap is : omap is : emap is : crcrlf,delbs, Type [C-a] [C-h] to see available commands Terminal ready 0 i2c_write: error waiting for data ACK (status=0x116) Error reading output register switch to partitions #0, OK mmc1 is current device i2c_write: error waiting for data ACK (status=0x116) Error reading output register SD/MMC found on device 1 0 bytes read in 1 ms (0 Bytes/s) Loaded env from uEnv.txt Importing environment from mmc1 ... 16654344 bytes read in 668 ms (23.8 MiB/s) 87897 bytes read in 6 ms (14 MiB/s) ## Flattened Device Tree blob at 82000000 Booting using the fdt blob at 0x82000000 Loading Device Tree to 00000000bdda2000, end 00000000bdebafff ... OK Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x411fd080] [ 0.000000] Linux version 5.4.40-g66cf445b76 (user@UbuntuLTS2) (gcc version 9.2.1 20191025 (GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10))) #1 SMP PREEMPT Thu Jul 2 10:03:54 CEST 2020 [ 0.000000] Machine model: Texas Instruments K3 J721E SoC [ 0.000000] earlycon: ns16550a0 at MMIO32 0x0000000002800000 (options '') [ 0.000000] printk: bootconsole [ns16550a0] enabled [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@a1000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 31 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@a1100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@a3000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@a3100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a4000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@a4000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a4100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@a4100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a5000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@a5000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a5100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@a5100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a6000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node c66-dma-memory@a6000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a6100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node c66-memory@a6100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a7000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node c66-dma-memory@a7000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a7100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node c66-memory@a7100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a8000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node c71-dma-memory@a8000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000a8100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node c71-memory@a8100000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000fb000000, size 1 MiB [ 0.000000] OF: reserved mem: initialized node r5f-dma-memory@fb000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created DMA memory pool at 0x00000000fb100000, size 15 MiB [ 0.000000] OF: reserved mem: initialized node r5f-memory@fb100000, compatible id shared-dma-pool [ 0.000000] cma: Failed to reserve 512 MiB [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: PSCIv1.1 detected in firmware. [ 0.000000] psci: Using standard PSCI v0.2 function IDs [ 0.000000] psci: Trusted OS migration not required [ 0.000000] psci: SMC Calling Convention v1.0 [ 0.000000] percpu: Embedded 2 pages/cpu s48408 r8192 d74472 u131072 [ 0.000000] Detected PIPT I-cache on CPU0 [ 0.000000] CPU features: detected: GIC system register CPU interface [ 0.000000] CPU features: detected: EL2 vector hardening [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: -1037 [ 0.000000] Kernel command line: console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 mtdparts=47040000.spi.0:512k(ospi.tiboot3),2m(ospi.tispl),4m(ospi.u-boot),128k(ospi.env),128k(ospi.env.backup),1m(ospi.sysfw),-@8m(ospi.rootfs);47034000.hyperbus:512k(hbmc.tiboot3),2m(hbmc.tispl),4m(hbmc.u-boot),256k(hbmc.env),1m(hbmc.sysfw),-@8m(hbmc.rootfs) root=PARTUUID=569de07f-02 rw rootfstype=ext4 rootwait