SK-AM64: 6442

Hi  Nick,

    Thank you for your answer. I read the TFTP upgrade document attached to this question. I think TFTP upgrade is OK, but I hope to use USB flash disk upgrade, because it is more convenient for our factory production. Can you give us more detailed instructions on how to upgrade the firmware of USB flash disk?

Sorry, I just tried to start from NFS according to the method in the link above, but rootfs did not seem to mount successfully. Can you tell me what happened?

=> booti ${loadaddr} - ${fdtaddr}
Moving Image from 0x82000000 to 0x82080000, end=83037000
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Device Tree to 000000008fff0000, end 000000008fffffe6 ... OK

Starting kernel ...

[ 0.000000] 000: Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[ 0.000000] 000: Linux version 5.4.106-rt54-g519667b0d8 (weicheng@cvte) (gcc version 9.2.1 20191025 (GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10))) #2 SMP PREEMPT_RT Tue Jun 15 1
[ 0.000000] 000: Machine model: Texas Instruments AM642 EVM
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-dma-memory@a1000000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-memory@a1100000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-dma-memory@a2000000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a2100000, size 15 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-memory@a2100000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-dma-memory@a3000000, compatible id shared-dma-pool
[ 0.000000] 000: Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB
[ 0.000000] 000: OF: reserved mem: initialized node r5f-memory@a3100000, compatible id shared-dma-pool
[ 0.000000] 000: cma: Reserved 24 MiB at 0x00000000fe800000
[ 0.000000] 000: psci: probing for conduit method from DT.
[ 0.000000] 000: psci: PSCIv1.1 detected in firmware.
[ 0.000000] 000: psci: Using standard PSCI v0.2 function IDs
[ 0.000000] 000: psci: Trusted OS migration not required
[ 0.000000] 000: psci: SMC Calling Convention v1.0
[ 0.000000] 000: percpu: Embedded 18 pages/cpu s32960 r8192 d32576 u73728
[ 0.000000] 000: Detected VIPT I-cache on CPU0
[ 0.000000] 000: CPU features: detected: ARM erratum 845719
[ 0.000000] 000: CPU features: detected: GIC system register CPU interface
[ 0.000000] 000: Built 1 zonelists, mobility grouping on. Total pages: 45056
[ 0.000000] 000: Kernel command line: console=ttyS2,115200n8 root=/dev/nfs nfsroot=192.168.159.125:/home/weicheng/ti-processor-sdk-linux-rt-am64xx-evm-08.00.00.21/targetNFS,nolock,v3 rw ip=192.168.1590
[ 0.000000] 000: Dentry cache hash table entries: 32768 (order: 7, 524288 bytes, linear)
[ 0.000000] 000: Inode-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.000000] 000: mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] 000: software IO TLB: mapped [mem 0xbbfff000-0xbffff000] (64MB)
[ 0.000000] 000: Memory: 1854508K/212992K available (9662K kernel code, 668K rwdata, 3740K rodata, 1536K init, 426K bss, 18446744073707885524K reserved, 24576K cma-reserved)
[ 0.000000] 000: SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] 000: rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] 000: rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=2.
[ 0.000000] 000: rcu: RCU priority boosting: priority 1 delay 500 ms.
[ 0.000000] 000: rcu: RCU_SOFTIRQ processing moved to rcuc kthreads.
[ 0.000000] 000: No expedited grace period (rcu_normal_after_boot).
[ 0.000000] 000: Tasks RCU enabled.
[ 0.000000] 000: rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] 000: rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 0.000000] 000: NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] 000: GICv3: GIC: Using split EOI/Deactivate mode
[ 0.000000] 000: GICv3: 256 SPIs implemented
[ 0.000000] 000: GICv3: 0 Extended SPIs implemented
[ 0.000000] 000: GICv3: Distributor has no Range Selector support
[ 0.000000] 000: GICv3: 16 PPIs implemented
[ 0.000000] 000: GICv3: no VLPI support, no direct LPI support
[ 0.000000] 000: GICv3: CPU0: found redistributor 0 region 0:0x0000000001840000
[ 0.000000] 000: ITS [mem 0x01820000-0x0182ffff]
[ 0.000000] 000: GIC: enabling workaround for ITS: Socionext Synquacer pre-ITS
[ 0.000000] 000: ITS@0x0000000001820000: Devices Table too large, reduce ids 20->19
[ 0.000000] 000: ITS@0x0000000001820000: allocated 524288 Devices @fb400000 (flat, esz 8, psz 64K, shr 0)
[ 0.000000] 000: ITS: using cache flushing for cmd queue
[ 0.000000] 000: GICv3: using LPI property table @0x00000000fbc30000
[ 0.000000] 000: GIC: using cache flushing for LPI property table
[ 0.000000] 000: GICv3: CPU0: using allocated LPI pending table @0x00000000fbc40000
[ 0.000000] 000: random: get_random_bytes called from start_kernel+0x2bc/0x430 with crng_init=0
[ 0.000000] 000: arch_timer: cp15 timer(s) running at 200.00MHz (phys).
[ 0.000000] 000: clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x2e2049d3e8, max_idle_ns: 440795210634 ns
[ 0.000001] 000: sched_clock: 56 bits at 200MHz, resolution 5ns, wraps every 4398046511102ns
[ 0.000311] 000: Console: colour dummy device 80x25
[ 0.000375] 000: Calibrating delay loop (skipped), value calculated using timer frequency.. 400.00 BogoMIPS (lpj=800000)
[ 0.000382] 000: pid_max: default: 32768 minimum: 301
[ 0.000513] 000: LSM: Security Framework initializing
[ 0.000576] 000: Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.000584] 000: Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.002451] 000: ASID allocator initialised with 32768 entries
[ 0.002563] 000: rcu: Hierarchical SRCU implementation.
[ 0.003075] 000: Platform MSI: msi-controller@1820000 domain created
[ 0.003344] 000: PCI/MSI: /bus@f4000/interrupt-controller@1800000/msi-controller@1820000 domain created
[ 0.003690] 000: smp: Bringing up secondary CPUs ...
[ 0.004638] 001: Detected VIPT I-cache on CPU1
[ 0.004675] 001: GICv3: CPU1: found redistributor 1 region 0:0x0000000001860000
[ 0.004693] 001: GICv3: CPU1: using allocated LPI pending table @0x00000000fbc50000
[ 0.004743] 001: CPU1: Booted secondary processor 0x0000000001 [0x410fd034]
[ 0.004878] 000: smp: Brought up 1 node, 2 CPUs
[ 0.004884] 000: SMP: Total of 2 processors activated.
[ 0.004890] 000: CPU features: detected: 32-bit EL0 Support
[ 0.004896] 000: CPU features: detected: CRC32 instructions
[ 0.011242] 000: CPU: All CPU(s) started at EL2
[ 0.011264] 000: alternatives: patching kernel code
[ 0.012927] 001: devtmpfs: initialized
[ 0.022086] 001: clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.022115] 001: futex hash table entries: 512 (order: 4, 65536 bytes, linear)
[ 0.023339] 001: pinctrl core: initialized pinctrl subsystem
[ 0.024381] 001: NET: Registered protocol family 16
[ 0.026559] 001: DMA: preallocated 256 KiB pool for atomic allocations
[ 0.027485] 001: hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.046293] 000: HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.046307] 000: HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.046312] 000: HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.046316] 000: HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
[ 0.047353] 001: cryptd: max_cpu_qlen set to 1000
[ 0.051774] 000: vsys_5v0: supplied by evm_12v0
[ 0.052091] 000: vsys_3v3: supplied by evm_12v0
[ 0.052616] 000: vddb_3v3_display: supplied by vsys_3v3
[ 0.053672] 001: iommu: Default domain type: Translated
[ 0.054158] 001: SCSI subsystem initialized
[ 0.054391] 001: usbcore: registered new interface driver usbfs
[ 0.054438] 001: usbcore: registered new interface driver hub
[ 0.054471] 001: usbcore: registered new device driver usb
[ 0.055076] 001: mc: Linux media interface: v0.10
[ 0.055106] 001: videodev: Linux video capture interface: v2.00
[ 0.055134] 001: pps_core: LinuxPPS API ver. 1 registered
[ 0.055137] 001: pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.055153] 001: PTP clock support registered
[ 0.055188] 001: EDAC MC: Ver: 3.0.0
[ 0.056065] 000: omap-mailbox 29020000.mailbox: omap mailbox rev 0x66fc9100
[ 0.056286] 000: omap-mailbox 29040000.mailbox: omap mailbox rev 0x66fc9100
[ 0.056571] 000: omap-mailbox 29060000.mailbox: omap mailbox rev 0x66fc9100
[ 0.057411] 000: FPGA manager framework
[ 0.057546] 000: Advanced Linux Sound Architecture Driver Initialized.
[ 0.058558] 001: clocksource: Switched to clocksource arch_sys_counter
[ 0.058765] 001: VFS: Disk quotas dquot_6.6.0
[ 0.058824] 001: VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.066341] 001: thermal_sys: Registered thermal governor 'step_wise'
[ 0.066348] 001: thermal_sys: Registered thermal governor 'power_allocator'
[ 0.066842] 001: NET: Registered protocol family 2
[ 0.067636] 001: tcp_listen_portaddr_hash hash table entries: 128 (order: 1, 8192 bytes, linear)
[ 0.067664] 001: TCP established hash table entries: 2048 (order: 2, 16384 bytes, linear)
[ 0.067698] 001: TCP bind hash table entries: 2048 (order: 4, 114688 bytes, linear)
[ 0.067790] 001: TCP: Hash tables configured (established 2048 bind 2048)
[ 0.067949] 001: UDP hash table entries: 256 (order: 3, 32768 bytes, linear)
[ 0.067993] 001: UDP-Lite hash table entries: 256 (order: 3, 32768 bytes, linear)
[ 0.068202] 001: NET: Registered protocol family 1
[ 0.068763] 001: RPC: Registered named UNIX socket transport module.
[ 0.068771] 001: RPC: Registered udp transport module.
[ 0.068774] 001: RPC: Registered tcp transport module.
[ 0.068776] 001: RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.068790] 001: PCI: CLS 0 bytes, default 64
[ 0.069564] 001: hw perfevents: enabled with armv8_cortex_a53 PMU driver, 7 counters available
[ 0.073830] 001: Initialise system trusted keyrings
[ 0.074092] 000: workingset: timestamp_bits=46 max_order=19 bucket_order=0
[ 0.081452] 000: squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.082271] 001: NFS: Registering the id_resolver key type
[ 0.082308] 001: Key type id_resolver registered
[ 0.082313] 001: Key type id_legacy registered
[ 0.082323] 001: nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.082653] 001: 9p: Installing v9fs 9p2000 file system support
[ 0.098694] 000: Key type asymmetric registered
[ 0.098707] 000: Asymmetric key parser 'x509' registered
[ 0.098787] 000: Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[ 0.098794] 000: io scheduler mq-deadline registered
[ 0.098798] 000: io scheduler kyber registered
[ 0.101588] 000: pinctrl-single f4000.pinctrl: 180 pins, size 720
[ 0.102841] 000: pinctrl-single a40000.timesync-router: 512 pins, size 2048
[ 0.113370] 000: Serial: 8250/16550 driver, 10 ports, IRQ sharing enabled
[ 0.130836] 000: brd: module loaded
[ 0.141317] 001: loop: module loaded
[ 0.145638] 001: libphy: Fixed MDIO Bus: probed
[ 0.146266] 001: tun: Universal TUN/TAP device driver, 1.6
[ 0.147205] 001: igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.4.0-k
[ 0.147212] 001: igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[ 0.147284] 001: sky2: driver version 1.30
[ 0.148478] 001: VFIO - User Level meta-driver version: 0.3
[ 0.148780] 000: ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.148785] 000: ehci-pci: EHCI PCI platform driver
[ 0.148832] 000: ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.148911] 000: usbcore: registered new interface driver usb-storage
[ 0.149731] 000: i2c /dev entries driver
[ 0.150973] 000: sdhci: Secure Digital Host Controller Interface driver
[ 0.150978] 000: sdhci: Copyright(c) Pierre Ossman
[ 0.151570] 000: sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.154356] 000: optee: probing for conduit method from DT.
[ 0.154394] 000: optee: revision 3.12 (3d47a131)
[ 0.155152] 000: optee: initialized driver
[ 0.157280] 000: NET: Registered protocol family 17
[ 0.157369] 000: lib80211: common routines for IEEE802.11 drivers
[ 0.157502] 000: 9pnet: Installing 9P2000 support
[ 0.157568] 000: Key type dns_resolver registered
[ 0.158166] 001: registered taskstats version 1
[ 0.158173] 001: Loading compiled-in X.509 certificates
[ 0.172446] 001: ti-sci 44043000.dmsc: ABI: 3.1 (firmware rev 0x0015 '21.5.0--v2021.05 (Terrific Llam')
[ 0.201761] 000: random: fast init done
[ 0.205876] 001: omap_i2c 20000000.i2c: bus 0 rev0.12 at 100 kHz
[ 0.207159] 001: pca953x 1-0022: 1-0022 supply vcc not found, using dummy regulator
[ 0.207261] 001: pca953x 1-0022: using AI
[ 0.259618] 001: Console: switching to mono frame buffer device 12x2
[ 0.288406] 001: ssd1307fb 1-003c: fb0: Solomon SSD1307 framebuffer device registered, using 192 bytes of video memory
[ 0.288507] 001: omap_i2c 20010000.i2c: bus 1 rev0.12 at 400 kHz
[ 0.289487] 001: omap_i2c 20020000.i2c: bus 2 rev0.12 at 100 kHz
[ 0.290412] 001: omap_i2c 20030000.i2c: bus 3 rev0.12 at 100 kHz
[ 0.290767] 001: ti-sci-intr bus@f4000:bus@4000000:interrupt-controller1: Interrupt Router 5 domain created
[ 0.290944] 001: ti-sci-intr bus@f4000:interrupt-controller0: Interrupt Router 3 domain created
[ 0.291214] 001: ti-sci-inta 48000000.interrupt-controller: Interrupt Aggregator domain -1 created
[ 0.291931] 001: wiz bus@f4000:wiz@f000000: Unable to get pll0-refclk node
[ 0.291943] 001: wiz bus@f4000:wiz@f000000: Failed to initialize clocks
[ 0.292079] 001: wiz: probe of bus@f4000:wiz@f000000 failed with error -22
[ 0.293751] 001: ehrpwm 23000000.pwm: Failed to get tbclk
[ 0.294379] 001: ehrpwm 23010000.pwm: Failed to get tbclk
[ 0.295169] 001: ehrpwm 23020000.pwm: Failed to get tbclk
[ 0.295742] 001: ehrpwm 23030000.pwm: Failed to get tbclk
[ 0.296286] 001: ehrpwm 23040000.pwm: Failed to get tbclk
[ 0.296812] 001: ehrpwm 23050000.pwm: Failed to get tbclk
[ 0.297330] 001: ehrpwm 23060000.pwm: Failed to get tbclk
[ 0.297837] 001: ehrpwm 23070000.pwm: Failed to get tbclk
[ 0.298339] 001: ehrpwm 23080000.pwm: Failed to get tbclk
[ 0.299176] 001: ------------[ cut here ]------------
[ 0.299186] 001: j721e-pcie f102000.pcie: legacy-interrupt-controller node is absent
[ 0.299226] 001: WARNING: CPU: 1 PID: 27 at drivers/pci/controller/cadence/pci-j721e.c:185 j721e_pcie_probe+0x53c/0x6e0
[ 0.299248] 001: Modules linked in:
[ 0.299255] 001: CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 5.4.106-rt54-g519667b0d8 #2
[ 0.299261] 001: Hardware name: Texas Instruments AM642 EVM (DT)
[ 0.299278] 001: Workqueue: events deferred_probe_work_func
[ 0.299282] 001: pstate: 60000005 (nZCv daif -PAN -UAO)
[ 0.299286] 001: pc : j721e_pcie_probe+0x53c/0x6e0
[ 0.299291] 001: lr : j721e_pcie_probe+0x53c/0x6e0
[ 0.299295] 001: sp : ffff8000110d3b50
[ 0.299300] 001: x29: ffff8000110d3b50 x28: ffff00007bec4010
[ 0.299306] 001: x27: ffff00007bec4010 x26: ffff00007bec4010
[ 0.299311] 001: x25: ffff800010a48040 x24: 0000000000000000
[ 0.299317] 001: x23: ffff00007be78ec0 x22: ffff800010a483d0
[ 0.299323] 001: x21: ffff00007bec4010 x20: 0000000000000000
[ 0.299329] 001: x19: ffff00007af03980 x18: ffff800010cec9e8
[ 0.299334] 001: x17: 000000000000001f x16: 0000000000000000
[ 0.299339] 001: x15: ffffffffffffffff x14: 7362612073692065
[ 0.299344] 001: x13: 646f6e2072656c6c x12: ffff8000110d3a30
[ 0.299349] 001: x11: ffff800010f42168 x10: ffff800010f42180
[ 0.299353] 001: x9 : 0000000000000001 x8 : 0000000000039c70
[ 0.299358] 001: x7 : ffff800010fd4b50 x6 : ffff800010fd32f0
[ 0.299363] 001: x5 : 0000000000039c70 x4 : 0000000000001860
[ 0.299368] 001: x3 : 0000000000000000 x2 : ffff800010f42190
[ 0.299372] 001: x1 : c77187b3e3941800 x0 : 0000000000000000
[ 0.299377] 001: Call trace:
[ 0.299380] 001: j721e_pcie_probe+0x53c/0x6e0
[ 0.299384] 001: platform_drv_probe+0x50/0xa0
[ 0.299390] 001: really_probe+0xd4/0x318
[ 0.299395] 001: driver_probe_device+0x54/0xe8
[ 0.299400] 001: __device_attach_driver+0x80/0xb8
[ 0.299405] 001: bus_for_each_drv+0x74/0xc0
[ 0.299410] 001: __device_attach+0xe8/0x148
[ 0.299415] 001: device_initial_probe+0x10/0x18
[ 0.299420] 001: bus_probe_device+0x90/0x98
[ 0.299424] 001: deferred_probe_work_func+0x74/0xa8
[ 0.299430] 001: process_one_work+0x198/0x320
[ 0.299438] 001: worker_thread+0x1f0/0x418
[ 0.299442] 001: kthread+0x10c/0x140
[ 0.299448] 001: ret_from_fork+0x10/0x1c
[ 0.299455] 001: ---[ end trace 0000000000000002 ]---
[ 0.299515] 001: j721e-pcie: probe of f102000.pcie failed with error -22
[ 0.300178] 001: ti-bcdma 485c0100.dma-controller: Number of rings: 68
[ 0.301611] 001: ti-bcdma 485c0100.dma-controller: Channels: 24 (bchan: 12, tchan: 6, rchan: 6)
[ 0.303790] 001: ti-pktdma 485c0000.dma-controller: Number of rings: 288
[ 0.312597] 001: ti-pktdma 485c0000.dma-controller: Channels: 44 (tchan: 29, rchan: 15)
[ 0.316386] 001: printk: console [ttyS2] disabled
[ 0.316451] 001: 2800000.serial: ttyS2 at MMIO 0x2800000 (irq = 8, base_baud = 3000000) is a 8250
[ 0.316495] 001: printk: console [ttyS2] enabled
[ 0.319941] 001: spi-nor spi0.0: s28hs512t (65536 Kbytes)
[ 0.342815] 001: am65-cpts 39000000.cpts: CPTS ver 0x4e8a010c, freq:500000000, add_val:1 pps:0
[ 0.343965] 001: mmc0: CQHCI version 5.10
[ 0.387837] 001: mmc0: SDHCI controller on fa10000.mmc [fa10000.mmc] using ADMA 64-bit
[ 0.391557] 001: gpio-mux mux-controller: 2-way mux-controller registered
[ 0.400811] 001: vdd_mmc1: supplied by vsys_3v3
[ 0.401255] 001: ehrpwm 23000000.pwm: Failed to get tbclk
[ 0.401932] 001: ehrpwm 23010000.pwm: Failed to get tbclk
[ 0.402473] 001: ehrpwm 23020000.pwm: Failed to get tbclk
[ 0.403142] 001: ehrpwm 23030000.pwm: Failed to get tbclk
[ 0.403693] 001: ehrpwm 23040000.pwm: Failed to get tbclk
[ 0.404274] 001: ehrpwm 23050000.pwm: Failed to get tbclk
[ 0.404805] 001: ehrpwm 23060000.pwm: Failed to get tbclk
[ 0.405319] 001: ehrpwm 23070000.pwm: Failed to get tbclk
[ 0.405859] 001: ehrpwm 23080000.pwm: Failed to get tbclk
[ 0.407570] 001: mmc1: CQHCI version 5.10
[ 0.484100] 001: mmc0: Command Queue Engine enabled
[ 0.484124] 001: mmc0: new HS400 MMC card at address 0001
[ 0.484921] 001: mmcblk0: mmc0:0001 S0J56X 14.8 GiB
[ 0.485152] 001: mmcblk0boot0: mmc0:0001 S0J56X partition 1 31.5 MiB
[ 0.485372] 001: mmcblk0boot1: mmc0:0001 S0J56X partition 2 31.5 MiB
[ 0.485624] 001: mmcblk0rpmb: mmc0:0001 S0J56X partition 3 4.00 MiB, chardev (240:0)
[ 0.489332] 001: mmcblk0: p1
[ 1.920899] 001: sdhci-am654 fa00000.mmc: Power on failed
[ 1.951558] 001: mmc1: SDHCI controller on fa00000.mmc [fa00000.mmc] using ADMA 64-bit
[ 1.952045] 001: ehrpwm 23000000.pwm: Failed to get tbclk
[ 1.952751] 001: ehrpwm 23010000.pwm: Failed to get tbclk
[ 1.953571] 001: ehrpwm 23020000.pwm: Failed to get tbclk
[ 1.954221] 001: ehrpwm 23030000.pwm: Failed to get tbclk
[ 1.954862] 001: ehrpwm 23040000.pwm: Failed to get tbclk
[ 1.955451] 001: ehrpwm 23050000.pwm: Failed to get tbclk
[ 1.956019] 001: ehrpwm 23060000.pwm: Failed to get tbclk
[ 1.956575] 001: ehrpwm 23070000.pwm: Failed to get tbclk
[ 1.957119] 001: ehrpwm 23080000.pwm: Failed to get tbclk
[ 1.958115] 001: ehrpwm 23000000.pwm: Failed to get tbclk
[ 1.958719] 001: ehrpwm 23010000.pwm: Failed to get tbclk
[ 1.959300] 001: ehrpwm 23020000.pwm: Failed to get tbclk
[ 1.959852] 001: ehrpwm 23030000.pwm: Failed to get tbclk
[ 1.960387] 001: ehrpwm 23040000.pwm: Failed to get tbclk
[ 1.960910] 001: ehrpwm 23050000.pwm: Failed to get tbclk
[ 1.961425] 001: ehrpwm 23060000.pwm: Failed to get tbclk
[ 1.961933] 001: ehrpwm 23070000.pwm: Failed to get tbclk
[ 1.962451] 001: ehrpwm 23080000.pwm: Failed to get tbclk
[ 1.964500] 001: debugfs: Directory 'pd:114' with parent 'pm_genpd' already present!
[ 1.966975] 001: hctosys: unable to open rtc device (rtc0)
[ 14.248923] 001: ALSA device list:
[ 14.248938] 001: No soundcards found.
[ 46.050588] 001: vdd_mmc1: disabling

[ 111.587928] 001: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
[
[ 111.596616] 001: CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 5.4.106-rt54-g519667b0d8 #2

[ 111.606152] 001: Hardware name: Texas Instruments AM642 EVM (DT)

[ 111.612398] 001: Call trace:
1
[ 111.615520] 001: dump_backtrace+0x0/0x140
1
[ 111.619859] 001: show_stack+0x14/0x20
1
[ 111.623850] 001: dump_stack+0xb4/0x110
.
[ 111.627928] 001: panic+0x15c/0x30c
5
[ 111.631659] 001: mount_block_root+0x1d8/0x28c
8
[ 111.636344] 001: mount_root+0x124/0x158
7
[ 111.640508] 001: prepare_namespace+0x15c/0x1c0
1
[ 111.645279] 001: kernel_init_freeable+0x258/0x284
7
[ 111.650309] 001: kernel_init+0x10/0xfc
1
[ 111.654386] 001: ret_from_fork+0x10/0x1c
]
[ 111.658639] 001: SMP: stopping secondary CPUs

[ 111.663239] 001: Kernel Offset: disabled

[ 111.667400] 001: CPU features: 0x0002,2000200c

[ 111.672003] 001: Memory Limit: none

[ 111.675659] 001: ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0) ]---

Does the document “ Booting_Linux_from_eMMC_AM64x_GPEVM.pdf”   say that me must start from UART?

because I encountered a problem that I can't write in using UART，

Hello Cheng,

I am reassigning your thread to another team member to comment. Please ping the thread if you do not get a response in a day or so.

Regards,

Nick