Linux 系统启动优化测试工具的使用——grabserial

1、grabserial工具安装

grabserial需安装在linux下或者是Ubuntu下
sudo apt-get install grabserial

2、grabserial工具使用

1、首先连接设备USB到linux或者ubuntu
2、查看linux或者ubuntu下的/dev/目录下属于设备的tty设备，例如ttyUSB0ls /dev/tty*
3、打开grabserial设备，通过一下命令：sudo grabserial -v -d "/dev/ttyUSB0" -b 115200 -w 8 -p N -s 1 -e 30 -t -m "Starting kernel.*"

3、grabserial效果展示

sfw@ubuntu:/dev$ sudo grabserial -v -d "/dev/ttyUSB0" -b 115200 -w 8 -p N -s 1 -e 30 -t -m "Starting kernel.*"
Opening serial port /dev/ttyUSB0
115200:8N1:xonxoff=0:rtscts=0
Program will end in 30 seconds
Printing timing information for each line
Matching pattern 'Starting kernel.*' to set base time
Use Control-C to stop...
[0.000001 0.000001]
[0.171473 0.171472] U-Boot SPL 2018.03-4.14.98-2.3.3+gc20c44482b (Jul 27 2022 - 11:04:04 +0000)
[0.240925 0.069452] Normal Boot
[0.241571 0.000646] Trying to boot from MMC1
[0.428712 0.187141] Load image from MMC/SD 0x51800
[0.479561 0.050849] U
[0.837173 0.357612]
[0.837208 0.000035] U-Boot 2018.03-4.14.98-2.3.3+gc20c44482b (Jul 27 2022 - 11:04:04 +0000)
[0.843728 0.006520]
[0.843773 0.000045] CPU:   Freescale i.MX8QM revB A53 at 1200 MHz at 62C
[0.915331 0.071558] Model: Freescale i.MX8QM MEK
[0.917988 0.002657] Board: iMX8QM MEK
[0.919700 0.001712] Boot:  MMC0
[0.920961 0.001261] DRAM:  6 GiB
[1.099690 0.178729] [tgzx]init tg gateway.[tgzx]Conf_Read = 1&1, and init HUAWEI 5G.MMC:   FSL_SDHC: 0, FSL_SDHC: 1
[3.931691 2.832001] Loading Environment from MMC... *** Warning - bad CRC, using default environment
[4.147256 0.215565]
[4.153864 0.006608] Failed (-5)
[4.155433 0.001569] TX PLL is not locked.
[4.157381 0.001948] In:    serial
[4.158745 0.001364] Out:   serial
[4.160248 0.001503] Err:   serial
[4.161764 0.001516]
[4.161810 0.000046]  BuildInfo:
[4.163363 0.001553]   - SCFW c2c1675e, SECO-FW 268f2c02, IMX-MKIMAGE d7f9440d, ATF bb209a0
[4.169437 0.006074]   - U-Boot 2018.03-4.14.98-2.3.3+gc20c44482b
[4.173826 0.004389]
[4.387124 0.213298] switch to partitions #0, OK
[4.389508 0.002384] mmc0(part 0) is current device
[4.392128 0.002620] flash target is MMC:0
[4.615798 0.223670] Net:
[4.620921 0.005123] Warning: ethernet@5b040000 (eth0) using random MAC address - 16:fe:70:33:39:a3
[4.630015 0.009094] eth0: ethernet@5b040000 [PRIME]
[4.634966 0.004951] Warning: ethernet@5b050000 (eth1) using random MAC address - 8a:a0:4c:d0:35:1c
[4.640778 0.005812] , eth1: ethernet@5b050000
[4.644566 0.003788] Fastboot: Normal
[4.647425 0.002859] Normal Boot
[4.648404 0.000979] Hit any key to stop autoboot:  0
[7.865661 3.217257] switch to partitions #0, OK
[7.869113 0.003452] mmc0(part 0) is current device
[8.093713 0.224600] ** Unable to read file boot.scr **
[8.216038 0.122325] 23296512 bytes read in 102 ms (217.8 MiB/s)
[8.218176 0.002138] Booting from mmc ...
[8.218783 0.000607] ** Unable to read file hdmitxfw.bin **
[8.219512 0.000729] ** Unable to read file hdmirxfw.bin **
[8.227398 0.007886] 111453 bytes read in 9 ms (11.8 MiB/s)
[8.235116 0.007718] ## Flattened Device Tree blob at 83000000
[8.241098 0.005982]    Booting using the fdt blob at 0x83000000
[8.251240 0.010142]    Using Device Tree in place at 0000000083000000, end 000000008301e35c
[8.332536 0.081296] Disable gpt0@5d140000, resource id 207 not owned
[8.414620 0.082084] /dma-controller@5a1f0000, 73124
[8.420696 0.006076] /dma-controller@591F0000, 73984
[8.423018 0.002322] /dma-controller@591F0000, 73984
[8.429225 0.006207] /dma-controller@599F0000, 75044
[8.445693 0.016468]
[8.445934 0.000241] Starting kernel ...
[0.002858 0.002858]
[0.031600 0.028742] [    0.000000] Booting Linux on physical CPU 0x0
[0.040547 0.008947] [    0.000000] Linux version 4.14.98-gcd8359957-dirty (shenfangwei@itage-PowerEdge-R740) (gcc version 10.2.0 (GCC)) #6 SMP PREEMPT Mon Oct 17 18:22:07 CST 2022
[0.048744 0.008197] [    0.000000] Boot CPU: AArch64 Processor [410fd034]
[0.053893 0.005149] [    0.000000] Machine model: Freescale i.MX8QM MEK
[0.061400 0.007507] [    0.000000] efi: Getting EFI parameters from FDT:
[0.064052 0.002652] [    0.000000] efi: UEFI not found.
[0.066384 0.002332] [    0.000000] Reserved memory: created CMA memory pool at 0x0000000096000000, size 960 MiB
[0.073618 0.007234] [    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[0.082260 0.008642] [    0.000000] Reserved memory: created DMA memory pool at 0x0000000090400000, size 28 MiB
[0.089721 0.007461] [    0.000000] OF: reserved mem: initialized node rpmsg_dma@0x90400000, compatible id shared-dma-pool
[0.098758 0.009037] [    0.000000] earlycon: lpuart32 at MMIO 0x000000005a060000 (options '')
[0.105190 0.006432] [    0.000000] bootconsole [lpuart32] enabled
[0.118223 0.013033] [    0.000000] NUMA: No NUMA configuration found
[0.122394 0.004171] [    0.000000] NUMA: Faking a node at [mem 0x0000000000000000-0x000000097fffffff]
[0.129616 0.007222] [    0.000000] NUMA: NODE_DATA [mem 0x97ff4e400-0x97ff501ff]
[0.153513 0.023897] [    0.000000] Zone ranges:
[0.156650 0.003137] [    0.000000]   DMA      [mem 0x0000000080200000-0x00000000ffffffff]
[0.161858 0.005208] [    0.000000]   Normal   [mem 0x0000000100000000-0x000000097fffffff]
[0.168060 0.006202] [    0.000000] Movable zone start for each node
[0.172303 0.004243] [    0.000000] Early memory node ranges
[0.176117 0.003814] [    0.000000]   node   0: [mem 0x0000000080200000-0x0000000083ffffff]
[0.182255 0.006138] [    0.000000]   node   0: [mem 0x0000000086400000-0x000000008fffffff]
[0.188394 0.006139] [    0.000000]   node   0: [mem 0x0000000094c00000-0x00000000fdffffff]
[0.194633 0.006239] [    0.000000]   node   0: [mem 0x0000000880000000-0x000000097fffffff]
[0.201015 0.006382] [    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000097fffffff]
[0.616372 0.415357] [    0.000000] psci: probing for conduit method from DT.
[0.626085 0.009713] [    0.000000] psci: PSCIv1.1 detected in firmware.
[0.628643 0.002558] [    0.000000] psci: Using standard PSCI v0.2 function IDs
[0.633936 0.005293] [    0.000000] psci: Trusted OS migration not required
[0.636781 0.002845] [    0.000000] psci: SMC Calling Convention v1.1
[0.640757 0.003976] [    0.000000] percpu: Embedded 24 pages/cpu @ffff8008ffeb9000 s57624 r8192 d32488 u98304
[0.645237 0.004480] [    0.000000] Detected VIPT I-cache on CPU0
[0.649058 0.003821] [    0.000000] CPU features: enabling workaround for ARM errata 826319, 827319, 824069
[0.661548 0.012490] [    0.000000] CPU features: enabling workaround for ARM erratum 845719
[0.667861 0.006313] [    0.000000] Speculative Store Bypass Disable mitigation not required
[0.682318 0.014457] [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 1511496
[0.687927 0.005609] [    0.000000] Policy zone: Normal
[0.694305 0.006378] [    0.000000] Kernel command line: console=ttyLP0,115200 earlycon root=/dev/mmcblk0p2 rootwait rw
[0.695858 0.001553] [    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[0.704827 0.008969] [    0.000000] software IO TLB: mapped [mem 0xf9fff000-0xfdfff000] (64MB)
[0.823468 0.118641] [    0.000000] Memory: 4838916K/6141952K available (13500K kernel code, 1822K rwdata, 6088K rodata, 1280K init, 432K bss, 319996K reserved, 983040K cma-reserved)
[0.837874 0.014406] [    0.000000] Virtual kernel memory layout:
[0.841070 0.003196] [    0.000000]     modules : 0xffff000000000000 - 0xffff000008000000   (   128 MB)
[0.848613 0.007543] [    0.000000]     vmalloc : 0xffff000008000000 - 0xffff7dffbfff0000   (129022 GB)
[0.855501 0.006888] [    0.000000]       .text : 0xffff000008080000 - 0xffff000008db0000   ( 13504 KB)
[0.863131 0.007630] [    0.000000]     .rodata : 0xffff000008db0000 - 0xffff0000093b0000   (  6144 KB)
[0.870151 0.007020] [    0.000000]       .init : 0xffff0000093b0000 - 0xffff0000094f0000   (  1280 KB)
[0.877321 0.007170] [    0.000000]       .data : 0xffff0000094f0000 - 0xffff0000096b7a00   (  1823 KB)
[0.884549 0.007228] [    0.000000]        .bss : 0xffff0000096b7a00 - 0xffff000009723b68   (   433 KB)
[0.892227 0.007678] [    0.000000]     fixed   : 0xffff7dfffe7f9000 - 0xffff7dfffec00000   (  4124 KB)
[0.899147 0.006920] [    0.000000]     PCI I/O : 0xffff7dfffee00000 - 0xffff7dffffe00000   (    16 MB)
[0.906748 0.007601] [    0.000000]     vmemmap : 0xffff7e0000000000 - 0xffff800000000000   (  2048 GB maximum)
[0.914856 0.008108] [    0.000000]               0xffff7e0000008000 - 0xffff7e0024000000   (   575 MB actual)
[0.922417 0.007561] [    0.000000]     memory  : 0xffff800000200000 - 0xffff800900000000   ( 36862 MB)
[0.929832 0.007415] [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=6, Nodes=1
[0.936690 0.006858] [    0.000000] Preemptible hierarchical RCU implementation.
[0.941494 0.004804] [    0.000000]  RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=6.
[0.947692 0.006198] [    0.000000]  Tasks RCU enabled.
[0.952456 0.004764] [    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=6
[0.959150 0.006694] [    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[0.967281 0.008131] [    0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[0.972291 0.005010] [    0.000000] GICv3: no VLPI support, no direct LPI support
[0.977808 0.005517] [    0.000000] ITS: No ITS available, not enabling LPIs
[0.982517 0.004709] [    0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000051b00000
[1.014556 0.032039] [    0.000000] arch_timer: cp15 timer(s) running at 8.00MHz (phys).
[1.020651 0.006095] [    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 440795202120 ns
[1.031304 0.010653] [    0.000004] sched_clock: 56 bits at 8MHz, resolution 125ns, wraps every 2199023255500ns
[1.042183 0.010879] [    0.011145] Console: colour dummy device 80x25
[1.046373 0.004190] [    0.015300] Calibrating delay loop (skipped), value calculated using timer frequency.. 16.00 BogoMIPS (lpj=32000)
[1.056801 0.010428] [    0.025501] pid_max: default: 32768 minimum: 301
[1.061386 0.004585] [    0.030164] Security Framework initialized
[1.067904 0.006518] [    0.036714] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
[1.075904 0.008000] [    0.044940] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
[1.082846 0.006942] [    0.051786] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
[1.089875 0.007029] [    0.058639] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
[1.112975 0.023100] [    0.081949] ASID allocator initialised with 32768 entries
[1.126220 0.013245] [    0.095032] Hierarchical SRCU implementation.
[1.138788 0.012568] [    0.107812] *****Initialized MU
[1.141826 0.003038] [    0.110629] ***** imx8_init_pm_domains *****
[1.146742 0.004916] [    0.116005] CPU identified as i.MX8QM, silicon rev 1.1
[1.153360 0.006618] [    0.122443] EFI services will not be available.
[1.165632 0.012272] [    0.134653] smp: Bringing up secondary CPUs ...
[1.315250 0.149618] [    0.167484] Detected VIPT I-cache on CPU1
[1.316372 0.001122] [    0.167512] GICv3: CPU1: found redistributor 1 region 0:0x0000000051b20000
[1.321668 0.005296] [    0.167540] CPU1: Booted secondary processor [410fd034]
[1.327833 0.006165] [    0.195490] Detected VIPT I-cache on CPU2
[1.331345 0.003512] [    0.195505] GICv3: CPU2: found redistributor 2 region 0:0x0000000051b40000
[1.339709 0.008364] [    0.195519] CPU2: Booted secondary processor [410fd034]
[1.347399 0.007690] [    0.223532] Detected VIPT I-cache on CPU3
[1.352040 0.004641] [    0.223545] GICv3: CPU3: found redistributor 3 region 0:0x0000000051b60000
[1.356920 0.004880] [    0.223558] CPU3: Booted secondary processor [410fd034]
[1.359656 0.002736] [    0.252499] Detected PIPT I-cache on CPU4
[1.362603 0.002947] [    0.252516] GICv3: CPU4: found redistributor 100 region 0:0x0000000051b80000
[1.369473 0.006870] [    0.252531] CPU4: Booted secondary processor [410fd082]
[1.374892 0.005419] [    0.279613] Detected PIPT I-cache on CPU5
[1.379344 0.004452] [    0.279623] GICv3: CPU5: found redistributor 101 region 0:0x0000000051ba0000
[1.386165 0.006821] [    0.279634] CPU5: Booted secondary processor [410fd082]
[1.390969 0.004804] [    0.279689] smp: Brought up 1 node, 6 CPUs
[1.394980 0.004011] [    0.364154] SMP: Total of 6 processors activated.
[1.400069 0.005089] [    0.368841] CPU features: detected feature: GIC system register CPU interface
[1.406772 0.006703] [    0.375976] CPU features: detected feature: 32-bit EL0 Support
[1.412641 0.005869] [    0.381786] CPU features: detected feature: Kernel page table isolation (KPTI)
[1.429358 0.016717] [    0.398500] CPU: All CPU(s) started at EL2
[1.433184 0.003826] [    0.402272] alternatives: patching kernel code
[1.438036 0.004852] [    0.407353] devtmpfs: initialized
[1.455418 0.017382] [    0.423604] random: get_random_u32 called from bucket_table_alloc+0x108/0x260 with crng_init=0
[1.476142 0.020724] [    0.432330] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[1.480880 0.004738] [    0.441803] futex hash table entries: 2048 (order: 6, 262144 bytes)
[1.499298 0.018418] [    0.468509] pinctrl core: initialized pinctrl subsystem
[1.506315 0.007017] [    0.475614] DMI not present or invalid.
[1.509951 0.003636] [    0.479427] NET: Registered protocol family 16
[1.516170 0.006219] [    0.485540] cpuidle: using governor menu
[1.521256 0.005086] [    0.490295] vdso: 2 pages (1 code @ ffff000008db6000, 1 data @ ffff0000094f4000)
[1.528155 0.006899] [    0.497368] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[1.539548 0.011393] [    0.508960] DMA: preallocated 256 KiB pool for atomic allocations
[1.545812 0.006264] [    0.515297] Serial: AMBA PL011 UART driver
[1.549722 0.003910] [    0.519178] imx rpmsg driver is registered.
[1.556404 0.006682] [    0.525905] MU and Power domains initialized
[1.560755 0.004351] [    0.529846] ***** imx8qm_clocks_init *****
[1.569134 0.008379] [    0.537859] random: fast init done
[1.638000 0.068866] [    0.606941] imx8qm-pinctrl iomuxc: Invalid fsl,pins or pins property in node /iomuxc/imx8qm-mek/wifi_initgrp
[1.647172 0.009172] [    0.616443] imx8qm-pinctrl iomuxc: initialized IMX pinctrl driver
[1.686258 0.039086] [    0.624168] ARM CCI_400_r1 PMU driver probed
[1.690418 0.004160] [    0.655539] mxs_phy 5b100000.usbphy: 5b100000.usbphy supply phy-3p0 not found, using dummy regulator
[1.720174 0.029756] [    0.689634] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[1.737551 0.017377] [    0.706986] ACPI: Interpreter disabled.
[1.761683 0.024132] [    0.730519] vgaarb: loaded
[1.764544 0.002861] [    0.733165] SCSI subsystem initialized
[1.767461 0.002917] [    0.736998] usbcore: registered new interface driver usbfs
[1.789759 0.022298] [    0.742197] usbcore: registered new interface driver hub
[1.792788 0.003029] [    0.747499] usbcore: registered new device driver usb
[1.793420 0.000632] [    0.753093] usb_phy_generic usbphynop1: usbphynop1 supply vcc not found, using dummy regulator
[1.799774 0.006354] [    0.761718] usb_phy_generic usbphynop2: usbphynop2 supply vcc not found, using dummy regulator
[1.806460 0.006686] [    0.771781] i2c i2c-2: LPI2C adapter registered
[1.807383 0.000923] [    0.776813] i2c i2c-3: LPI2C adapter registered
[1.812768 0.005385] [    0.782211] media: Linux media interface: v0.10
[1.816909 0.004141] [    0.786434] Linux video capture interface: v2.00
[1.830520 0.013611] [    0.791186] pps_core: LinuxPPS API ver. 1 registered
[1.841699 0.011179] [    0.795980] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[1.847444 0.005745] [    0.805124] PTP clock support registered
[1.848068 0.000624] [    0.809190] EDAC MC: Ver: 3.0.0
[1.849681 0.001613] [    0.812335] dmi: Firmware registration failed.
[1.851428 0.001747] [    0.818005] Advanced Linux Sound Architecture Driver Initialized.
[1.855451 0.004023] [    0.824886] clocksource: Switched to clocksource arch_sys_counter
[1.862137 0.006686] [    0.830777] VFS: Disk quotas dquot_6.6.0
[1.873331 0.011194] [    0.834595] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[1.876077 0.002746] [    0.841532] pnp: PnP ACPI: disabled
[1.881021 0.004944] [    0.850321] NET: Registered protocol family 2
[1.885682 0.004661] [    0.855027] TCP established hash table entries: 65536 (order: 7, 524288 bytes)
[1.896307 0.010625] [    0.862457] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[1.914290 0.017983] [    0.869798] TCP: Hash tables configured (established 65536 bind 65536)
[1.945201 0.030911] [    0.876126] UDP hash table entries: 4096 (order: 5, 131072 bytes)
[1.945952 0.000751] [    0.882231] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes)
[1.957228 0.011276] [    0.888847] NET: Registered protocol family 1
[1.957751 0.000523] [    0.893220] RPC: Registered named UNIX socket transport module.
[1.966562 0.008811] [    0.898839] RPC: Registered udp transport module.
[1.977136 0.010574] [    0.903526] RPC: Registered tcp transport module.
[1.978288 0.001152] [    0.908219] RPC: Registered tcp NFSv4.1 backchannel transport module.
[1.986895 0.008607] [    0.915974] hw perfevents: enabled with armv8_pmuv3 PMU driver, 7 counters available
[1.998978 0.012083] [    0.923916] kvm [1]: 8-bit VMID
[1.999355 0.000377] [    0.928076] kvm [1]: vgic-v2@52020000
[1.999814 0.000459] [    0.931429] kvm [1]: GIC system register CPU interface enabled
[2.000580 0.000766] [    0.937308] kvm [1]: vgic interrupt IRQ1
[2.001128 0.000548] [    0.941237] kvm [1]: Hyp mode initialized successfully
[2.001861 0.000733] [    0.948852] audit: initializing netlink subsys (disabled)
[2.002646 0.000785] [    0.953999] audit: type=2000 audit(0.796:1): state=initialized audit_enabled=0 res=1
[2.015440 0.012794] [    0.954374] workingset: timestamp_bits=44 max_order=21 bucket_order=0
[2.022290 0.006850] [    0.973057] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[2.025799 0.003509] [    0.979029] NFS: Registering the id_resolver key type
[2.027202 0.001403] [    0.983760] Key type id_resolver registered
[2.031135 0.003933] [    0.987925] Key type id_legacy registered
[2.031423 0.000288] [    0.991913] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[2.038077 0.006654] [    0.998611] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[2.041267 0.003190] [    1.005286] 9p: Installing v9fs 9p2000 file system support
[2.045186 0.003919] [    1.014910] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[2.054246 0.009060] [    1.021980] io scheduler noop registered
[2.059386 0.005140] [    1.025962] io scheduler cfq registered (default)
[2.062923 0.003537] [    1.030568] io scheduler mq-deadline registered
[2.069465 0.006542] [    1.035087] io scheduler kyber registered
[2.081686 0.012221] [    1.051276] pwm-backlight lvds_backlight@0: lvds_backlight@0 supply power not found, using dummy regulator
[2.096741 0.015055] [    1.061115] pwm-backlight lvds_backlight@1: lvds_backlight@1 supply power not found, using dummy regulator
[2.107744 0.011003] [    1.077190] Bus freq driver module loaded
[2.120494 0.012750] [    1.089766] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[2.128637 0.008143] [    1.098339] SuperH (H)SCI(F) driver initialized
[2.133731 0.005094] [    1.103483] msm_serial: driver initialized
[2.139582 0.005851] [    1.108731] 5a060000.serial: ttyLP0 at MMIO 0x5a060010 (irq = 45, base_baud = 5000000) is a FSL_LPUAR[    1.119899] console [ttyLP0] enabled
[2.155170 0.015588] [    1.119899] console [ttyLP0] enabled
[2.158247 0.003077] [    1.126943] bootconsole [lpuart32] disabled
[2.165316 0.007069] [    1.126943] bootconsole [lpuart32] disabled
[2.179307 0.013991] [    1.135499] fsl-lpuart 5a060000.serial: NO DMA tx channel, run at cpu mode
[2.181951 0.002644] [    1.142388] fsl-lpuart 5a060000.serial: NO DMA rx channel, run at cpu mode
[2.189654 0.007703] [    1.150071] 5a070000.serial: ttyLP1 at MMIO 0x5a070010 (irq = 46, base_baud = 5000000) is a FSL_LPUART
[2.196659 0.007005] [    1.160522] 5a080000.serial: ttyLP2 at MMIO 0x5a080010 (irq = 47, base_baud = 5000000) is a FSL_LPUART
[2.202487 0.005828] [    1.170909] 5a090000.serial: ttyLP3 at MMIO 0x5a090010 (irq = 48, base_baud = 5000000) is a FSL_LPUART
[2.214042 0.011555] [    1.181288] 5a0a0000.serial: ttyLP4 at MMIO 0x5a0a0010 (irq = 49, base_baud = 5000000) is a FSL_LPUART
[2.223819 0.009777] [    1.193414] arm-smmu 51400000.iommu: probing hardware configuration...
[2.241059 0.017240] [    1.199956] arm-smmu 51400000.iommu: SMMUv2 with:
[2.257911 0.016852] [    1.204675] arm-smmu 51400000.iommu:     stage 1 translation
[2.272777 0.014866] [    1.210079] arm-smmu 51400000.iommu:     stage 2 translation
[2.273478 0.000701] [    1.215490] arm-smmu 51400000.iommu:     nested translation
[2.273960 0.000482] [    1.220811] arm-smmu 51400000.iommu:     stream matching with 32 register groups
[2.274862 0.000902] [    1.227959] arm-smmu 51400000.iommu:     32 context banks (0 stage-2 only)
[2.275535 0.000673] [    1.234578] Can't support > 32 bit dma.
[2.275975 0.000440] [    1.238425] arm-smmu 51400000.iommu: failed to set DMA mask for table walker
[2.277653 0.001678] [    1.245485] arm-smmu 51400000.iommu:     Supported page sizes: 0x61311000
[2.282061 0.004408] [    1.252033] arm-smmu 51400000.iommu:     Stage-1: 48-bit VA -> 48-bit IPA
[2.288615 0.006554] [    1.258566] arm-smmu 51400000.iommu:     Stage-2: 48-bit IPA -> 48-bit PA
[2.342725 0.054110] [    1.312518] imx8-dpr-channel 560d0000.dpr-channel: Linked as a consumer to 56040000.prg
[2.350824 0.008099] [    1.320826] imx8-dpr-channel 560e0000.dpr-channel: Linked as a consumer to 56050000.prg
[2.359221 0.008397] [    1.328866] imx8-dpr-channel 560e0000.dpr-channel: Linked as a consumer to 56040000.prg
[2.367326 0.008105] [    1.337178] imx8-dpr-channel 560f0000.dpr-channel: Linked as a consumer to 56060000.prg
[2.377731 0.010405] [    1.347473] imx8-dpr-channel 56100000.dpr-channel: Linked as a consumer to 56070000.prg
[2.385796 0.008065] [    1.355511] imx8-dpr-channel 56100000.dpr-channel: Linked as a consumer to 56080000.prg
[2.395788 0.009992] [    1.365793] imx8-dpr-channel 56110000.dpr-channel: Linked as a consumer to 56090000.prg
[2.403677 0.007889] [    1.373832] imx8-dpr-channel 56110000.dpr-channel: Linked as a consumer to 560a0000.prg
[2.414204 0.010527] [    1.384102] imx8-dpr-channel 56120000.dpr-channel: Linked as a consumer to 560b0000.prg
[2.422160 0.007956] [    1.392145] imx8-dpr-channel 56120000.dpr-channel: Linked as a consumer to 560c0000.prg
[2.432486 0.010326] [    1.402479] imx8-dpr-channel 570d0000.dpr-channel: Linked as a consumer to 57040000.prg
[2.440581 0.008095] [    1.410771] imx8-dpr-channel 570e0000.dpr-channel: Linked as a consumer to 57050000.prg
[2.448625 0.008044] [    1.418812] imx8-dpr-channel 570e0000.dpr-channel: Linked as a consumer to 57040000.prg
[2.457165 0.008540] [    1.427110] imx8-dpr-channel 570f0000.dpr-channel: Linked as a consumer to 57060000.prg
[2.468111 0.010946] [    1.437427] imx8-dpr-channel 57100000.dpr-channel: Linked as a consumer to 57070000.prg
[2.484298 0.016187] [    1.445473] imx8-dpr-channel 57100000.dpr-channel: Linked as a consumer to 57080000.prg
[2.485624 0.001326] [    1.455743] imx8-dpr-channel 57110000.dpr-channel: Linked as a consumer to 57090000.prg
[2.494508 0.008884] [    1.463784] imx8-dpr-channel 57110000.dpr-channel: Linked as a consumer to 570a0000.prg
[2.504218 0.009710] [    1.474063] imx8-dpr-channel 57120000.dpr-channel: Linked as a consumer to 570b0000.prg
[2.519927 0.015709] [    1.482108] imx8-dpr-channel 57120000.dpr-channel: Linked as a consumer to 570c0000.prg
[2.523818 0.003891] [    1.493437] dpu-core 57180000.dpu: Linked as a consumer to 57100000.dpr-channel
[2.530810 0.006992] [    1.500817] dpu-core 57180000.dpu: Linked as a consumer to 57110000.dpr-channel
[2.545480 0.014670] [    1.508174] dpu-core 57180000.dpu: Linked as a consumer to 570f0000.dpr-channel
[2.557854 0.012374] [    1.515567] dpu-core 57180000.dpu: Linked as a consumer to 57120000.dpr-channel
[2.565569 0.007715] [    1.522901] dpu-core 57180000.dpu: Linked as a consumer to 57020000.pixel-combiner
[2.566384 0.000815] [    1.531233] dpu-core 57180000.dpu: driver probed
[2.569747 0.003363] [    1.539747] imx-drm display-subsystem: parent device of /ldb@572410e0/lvds-channel@0 is not available
[2.586522 0.016775] [    1.556538] loop: module loaded
[2.590604 0.004082] [    1.560602] at24 2-0053: 65536 byte 24c512 EEPROM, writable, 1 bytes/write
[2.601407 0.010803] [    1.569776] iommu: Adding device 5f020000.sata to group 0
[2.607804 0.006397] [    1.577489] ahci-imx 5f020000.sata: ext_osc is not specified.
[2.619918 0.012114] [    1.583246] ahci-imx 5f020000.sata: phy impedance ratio is not specified.
[2.622138 0.002220] [    1.590945] ahci-imx 5f020000.sata: external osc is used.
[2.627792 0.005654] [    1.596505] ahci-imx 5f020000.sata: TX PLL of the PHY is not locked
[2.636446 0.008654] [    1.602794] ahci-imx 5f020000.sata: failed to reset phy: -19
[2.640531 0.004085] [    1.610506] slram: not enough parameters.
[2.649821 0.009290] [    1.619750] libphy: Fixed MDIO Bus: probed
[2.654227 0.004406] [    1.624214] NXP PHY: loading NXP PHY driver: [autonomous mode]
[2.660174 0.005947] [    1.630185] tun: Universal TUN/TAP device driver, 1.6
[2.665258 0.005084] [    1.635383] CAN device driver interface
[2.671569 0.006311] [    1.641558] iommu: Adding device 5b040000.ethernet to group 1
[2.678140 0.006571] [    1.648387] fec 5b040000.ethernet: 5b040000.ethernet supply phy not found, using dummy regulator
[2.687234 0.009094] [    1.657435] pps pps0: new PPS source ptp0
[2.693697 0.006463] [    1.661962] fec 5b040000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
[2.712879 0.019182] [    1.671980] fec 5b040000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: 56:82:e3:11:a7:0c
[2.725513 0.012634] [    1.683779] libphy: fec_enet_mii_bus: probed
[2.731327 0.005814] [    1.688451] mdio_bus 5b040000.ethernet-1: MDIO device at address 1 is missing.
[2.738656 0.007329] [    1.696131] fec 5b040000.ethernet eth0: registered PHC device 0
[2.739686 0.001030] [    1.702700] iommu: Adding device 5b050000.ethernet to group 1
[2.748719 0.009033] [    1.710332] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[2.759175 0.010456] [    1.716174] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[2.763905 0.004730] [    1.722155] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k
[2.789164 0.025259] [    1.729124] igb: Copyright (c) 2007-2014 Intel Corporation.
[2.790744 0.001580] [    1.734740] igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.4.0-k
[2.793109 0.002365] [    1.742580] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[2.795563 0.002454] [    1.749023] sky2: driver version 1.30
[2.798558 0.002995] [    1.753223] PPP generic driver version 2.4.2
[2.802233 0.003675] [    1.757626] PPP BSD Compression module registered
[2.802907 0.000674] [    1.762336] PPP Deflate Compression module registered
[2.803957 0.001050] [    1.767425] PPP MPPE Compression module registered
[2.806622 0.002665] [    1.772221] NET: Registered protocol family 24
[2.811392 0.004770] [    1.781316] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[2.832210 0.020818] [    1.787855] ehci-pci: EHCI PCI platform driver
[2.836708 0.004498] [    1.792365] ehci-platform: EHCI generic platform driver
[2.846099 0.009391] [    1.797924] ehci-orion: EHCI orion driver
[2.851775 0.005676] [    1.802119] ehci-exynos: EHCI EXYNOS driver
[2.853155 0.001380] [    1.806515] ehci-msm: Qualcomm On-Chip EHCI Host Controller
[2.854941 0.001786] [    1.812224] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[2.856596 0.001655] [    1.818434] ohci-pci: OHCI PCI platform driver
[2.857223 0.000627] [    1.822932] ohci-platform: OHCI generic platform driver
[2.858524 0.001301] [    1.828340] ohci-exynos: OHCI EXYNOS driver
[2.863012 0.004488] [    1.833292] usbcore: registered new interface driver cdc_wdm
[2.868706 0.005694] [    1.838997] usbcore: registered new interface driver usb-storage
[2.874633 0.005927] [    1.845102] usbcore: registered new interface driver usbserial
[2.880568 0.005935] [    1.850965] usbcore: registered new interface driver option
[2.895318 0.014750] [    1.856572] usbserial: USB Serial support registered for GSM modem (1-port)
[2.899937 0.004619] [    1.863575] usbcore: registered new interface driver usb_ehset_test
[2.901323 0.001386] [    1.871324] usbmisc_imx 5b0d0200.usbmisc: 5b0d0200.usbmisc supply vbus-wakeup not found, using dummy regulator
[2.921937 0.020614] [    1.881725] usbmisc_imx 5b0e0200.usbmisc: 5b0e0200.usbmisc supply vbus-wakeup not found, using dummy regulator
[2.932283 0.010346] [    1.893009] imx_usb 5b0d0000.usb: 5b0d0000.usb supply vbus not found, using dummy regulator
[2.934613 0.002330] [    1.904996] ci_hdrc ci_hdrc.0: EHCI Host Controller
[2.939449 0.004836] [    1.909901] ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
[2.965380 0.025931] [    1.932906] ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
[2.977209 0.011829] [    1.938822] hub 1-0:1.0: USB hub found
[2.982410 0.005201] [    1.942595] hub 1-0:1.0: 1 port detected
[2.982672 0.000262] [    1.949352] input: sc-powerkey as /devices/platform/sc-powerkey/input/input0
[3.007950 0.025278] [    1.958447] imx_sc_rtc rtc: rtc core: registered rtc as rtc0
[3.008609 0.000659] [    1.964517] i2c /dev entries driver
[3.028617 0.020008] [    1.970481] IR NEC protocol handler initialized
[3.030306 0.001689] [    1.975025] IR RC5(x/sz) protocol handler initialized
[3.030735 0.000429] [    1.980103] IR RC6 protocol handler initialized
[3.031129 0.000394] [    1.984638] IR JVC protocol handler initialized
[3.031493 0.000364] [    1.989172] IR Sony protocol handler initialized
[3.031936 0.000443] [    1.993802] IR SANYO protocol handler initialized
[3.032348 0.000412] [    1.998515] IR Sharp protocol handler initialized
[3.070869 0.038521] [    2.003224] IR MCE Keyboard/mouse protocol handler initialized
[3.071342 0.000473] [    2.009060] IR XMP protocol handler initialized
[3.071642 0.000300] [    2.016463] mxc-jpeg 58400000.jpegdec: decoder device registered as /dev/video0 (81,0)
[3.101988 0.030346] [    2.025273] mxc-jpeg 58450000.jpegenc: encoder device registered as /dev/video1 (81,1)
[3.102695 0.000707] [    2.040963] sdhci: Secure Digital Host Controller Interface driver
[3.103552 0.000857] [    2.047157] sdhci: Copyright(c) Pierre Ossman
[3.103865 0.000313] [    2.051870] Synopsys Designware Multimedia Card Interface Driver
[3.104386 0.000521] [    2.059261] sdhci-pltfm: SDHCI platform and OF driver helper
[3.131408 0.027022] [    2.066461] iommu: Adding device 5b010000.usdhc to group 2
[3.132228 0.000820] [    2.072760] mmc0: CQHCI version 5.10
[3.150466 0.018238] [    2.120927] mmc0: SDHCI controller on 5b010000.usdhc [5b010000.usdhc] using ADMA
[3.164029 0.013563] [    2.134425] iommu: Adding device 5b020000.usdhc to group 2
[3.170299 0.006270] [    2.140635] mmc1: CQHCI version 5.10
[3.176225 0.005926] [    2.144393] sdhci-esdhc-imx 5b020000.usdhc: Got CD GPIO
[3.184247 0.008022] [    2.149696] sdhci-esdhc-imx 5b020000.usdhc: Got WP GPIO
[3.231883 0.047636] [    2.201803] mmc1: SDHCI controller on 5b020000.usdhc [5b020000.usdhc] using ADMA
[3.245091 0.013208] [    2.213306] mxc_mlb150 5b060000.mlb: 5b060000.mlb supply reg_nvcc not found, using dummy regulator
[3.260432 0.015341] [    2.222320] mxc_mlb150 5b060000.mlb: enalbe regulator
[3.260810 0.000378] [    2.227455] mxc_mlb150 5b060000.mlb: no iram assigned, using external mem
[3.265793 0.004983] [    2.236354] mxc_emvsim 5a0d0000.sim0: emvsim register success
[3.281801 0.016008] [    2.251377] Galcore version 6.2.4.190076
[3.296682 0.014881] [    2.266892] mmc0: Command Queue Engine enabled
[3.307549 0.010867] [    2.271401] mmc0: new HS400 Enhanced strobe MMC card at address 0001
[3.318480 0.010931] [    2.278498] mmcblk0: mmc0:0001 032GB4 29.1 GiB
[3.324044 0.005564] [    2.283383] mmcblk0boot0: mmc0:0001 032GB4 partition 1 8.00 MiB
[3.331618 0.007574] [    2.289648] mmcblk0boot1: mmc0:0001 032GB4 partition 2 8.00 MiB
[3.332479 0.000861] [    2.295913] mmcblk0rpmb: mmc0:0001 032GB4 partition 3 4.00 MiB
[3.336560 0.004081] [    2.303440]  mmcblk0: p1 p2 p3 p4
[3.461698 0.125138] [    2.425967] ledtrig-cpu: registered to indicate activity on CPUs
[3.472834 0.011136] [    2.435620] caam 31400000.caam: ERA source: device tree.
[3.485435 0.012601] [    2.450665] caam algorithms registered in /proc/crypto
[3.499448 0.014013] [    2.458545] caam_jr 31430000.jr2: registering rng-caam
[3.499809 0.000361] [    2.463968] caam 31400000.caam: caam pkc algorithms registered in /proc/crypto
[3.502610 0.002801] [    2.473325] platform caam_sm: blkkey_ex: 16 keystore units available
[3.513431 0.010821] [    2.479933] caam 31400000.caam: SM test passed
[3.514693 0.001262] [    2.485271] usbcore: registered new interface driver usbhid
[3.524029 0.009336] [    2.490854] usbhid: USB HID core driver
[3.530106 0.006077] [    2.500356] optee: probing for conduit method from DT.
[3.535703 0.005597] [    2.505767] optee: initialized driver
[3.541269 0.005566] [    2.512003] ***** imx8qm_acm_init *****
[3.567102 0.025833] [    2.536856] imx-amix sound-amix-sai: DAI FE name:HiFi-AMIX-FE-sai@59820000
[3.577606 0.010504] [    2.543817] imx-amix sound-amix-sai: DAI FE name:HiFi-AMIX-FE-sai@59830000
[3.581000 0.003394] [    2.551073] imx-amix sound-amix-sai: snd-soc-dummy-dai <-> 59820000.sai mapping ok
[3.587754 0.006754] [    2.558709] imx-amix sound-amix-sai: snd-soc-dummy-dai <-> 59830000.sai mapping ok
[3.595325 0.007571] [    2.566322] imx-amix sound-amix-sai: snd-soc-dummy-dai <-> amix-0 mapping ok
[3.602428 0.007103] [    2.573409] imx-amix sound-amix-sai: snd-soc-dummy-dai <-> amix-1 mapping ok
[3.609500 0.007072] [    2.580482] imx-amix sound-amix-sai: ASoC: no DMI vendor name!
[3.617231 0.007731] [    2.588146] NET: Registered protocol family 26
[3.622322 0.005091] [    2.593049] NET: Registered protocol family 10
[3.627507 0.005185] [    2.598135] Segment Routing with IPv6
[3.631047 0.003540] [    2.601837] NET: Registered protocol family 17
[3.635333 0.004286] [    2.606295] can: controller area network core (rev 20170425 abi 9)
[3.641505 0.006172] [    2.612522] NET: Registered protocol family 29
[3.645978 0.004473] [    2.616972] can: raw protocol (rev 20170425)
[3.650230 0.004252] [    2.621256] can: broadcast manager protocol (rev 20170425 t)
[3.655898 0.005668] [    2.626931] can: netlink gateway (rev 20170425) max_hops=1
[3.661464 0.005566] [    2.632535] lib80211: common routines for IEEE802.11 drivers
[3.667234 0.005770] [    2.638238] 9pnet: Installing 9P2000 support
[3.671508 0.004274] [    2.642561] Key type dns_resolver registered
[3.676240 0.004732] [    2.647282] registered taskstats version 1
[3.699509 0.023269] [    2.670272] imx8_cpufreq_init: cluster 0 running at freq 1200 MHz, suspend freq 1200 MHz
[3.707908 0.008399] [    2.678836] imx8_cpufreq_init: cluster 1 running at freq 1596 MHz, suspend freq 1596 MHz
[3.722772 0.014864] [    2.693650] pwm-backlight lvds_backlight@0: lvds_backlight@0 supply power not found, using dummy regulator
[3.733377 0.010605] [    2.704376] pwm-backlight lvds_backlight@1: lvds_backlight@1 supply power not found, using dummy regulator
[3.749333 0.015956] [    2.720116] imx_sc_rtc rtc: setting system clock to 1970-01-01 03:39:34 UTC (13174)
[3.760574 0.011241] [    2.731523] epdev_on: disabling
[3.764501 0.003927] [    2.734687] sw-3p3-sd1: disabling
[3.767181 0.002680] [    2.738020] vref_1v8: disabling
[3.770214 0.003033] [    2.741183] ALSA device list:
[3.773160 0.002946] [    2.744147]   #0: amix-audio-sai
[3.789067 0.015907] [    2.759930] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[3.797250 0.008183] [    2.768275] VFS: Mounted root (ext4 filesystem) on device 179:2.
[3.807835 0.010585] [    2.778225] devtmpfs: mounted
[3.810953 0.003118] [    2.781824] Freeing unused kernel memory: 1280K
[3.896490 0.085537] [    2.867200] systemd[1]: System time before build time, advancing clock.
[3.917603 0.021113] [    2.888326] systemd[1]: systemd 237 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 -IDN -PCRE2 default-hierarchy=hybrid)
[3.939523 0.021920] [    2.910467] systemd[1]: Detected architecture arm64.
[3.954720 0.015197]
[3.954918 0.000198] Welcome to NXP i.MX Release Distro 4.14-sumo (sumo)!
[3.959933 0.005015]
[3.966894 0.006961] [    2.937945] systemd[1]: Set hostname to <imx8qmmek>.
[4.030351 0.063457] [    3.001282] systemd[1]: File /lib/systemd/system/systemd-journald.service:35 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.
[4.047085 0.016734] [    3.018367] systemd[1]: Proceeding WITHOUT firewalling in effect! (This warning is only shown for the first loaded unit using IP firewalling.)
[4.168793 0.121708] [    3.136557] random: systemd: uninitialized urandom read (16 bytes read)
[4.174614 0.005821] [    3.143736] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[4.184549 0.009935] [  OK  ] Started Forward Password Requests to Wall Directory Watch.
[4.205757 0.021208] [    3.165039] random: systemd: uninitialized urandom read (16 bytes read)
[4.216670 0.010913] [    3.171819] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[4.217887 0.001217] [  OK  ] Started Dispatch Password Requests to Console Directory Watch.
[4.226183 0.008296] [    3.197089] random: systemd: uninitialized urandom read (16 bytes read)
[4.236700 0.010517] [    3.203776] systemd[1]: Reached target Paths.
[4.238359 0.001659] [  OK  ] Reached target Paths.
[4.252178 0.013819] [    3.221152] systemd[1]: Reached target Host and Network Name Lookups.
[4.259129 0.006951] [  OK  ] Reached target Host and Network Name Lookups.
[4.269976 0.010847] [    3.240962] systemd[1]: Reached target Remote File Systems.
[4.278796 0.008820] [  OK  ] Reached target Remote File Systems.
[4.288048 0.009252] [  OK  ] Created slice User and Session Slice.
[4.298917 0.010869] [  OK  ] Created slice System Slice.
[4.310757 0.011840] [  OK  ] Created slice system-getty.slice.
[4.322401 0.011644] [  OK  ] Listening on Journal Socket (/dev/log).
[4.334165 0.011764] [  OK  ] Listening on /dev/initctl Compatibility Named Pipe.
[4.346304 0.012139] [  OK  ] Listening on Journal Socket.
[4.361568 0.015264]          Mounting Huge Pages File System...
[4.377583 0.016015]          Mounting Kernel Debug File System...
[4.390631 0.013048] [  OK  ] Listening on Syslog Socket.
[4.407080 0.016449]          Starting Setup Virtual Console...
[4.425483 0.018403] [  OK  ] Listening on Process Core Dump Socket.
[4.438537 0.013054] [  OK  ] Listening on udev Kernel Socket.
[4.455989 0.017452]          Starting Load Kernel Modules...
[4.467091 0.011102] [  OK  ] Listening on udev Control Socket.
[4.478562 0.011471] [  OK  ] Listening on Journal Audit Socket.
[4.490494 0.011932] [  OK  ] Listening on Network Service Netlink Socket.
[4.506103 0.015609]          Mounting POSIX Message Queue File System...
[4.518513 0.012410] [  OK  ] Created slice system-serial\x2dgetty.slice.
[4.534071 0.015558]          Starting Journal Service...
[4.549422 0.015351]          Starting udev Coldplug all Devices...
[4.562087 0.012665] [  OK  ] Reached target System Time Synchronized.
[4.578388 0.016301] [  OK  ] Reached target Slices.
[4.597172 0.018784]          Starting Remount Root and Kernel File Systems...
[4.610610 0.013438] [  OK  ] Reached target Swap.
[4.620115 0.009505] [    3.591114] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[4.642788 0.022673]          Mounting Temporary Directory (/tmp)...
[4.657570 0.014782] [  OK  ] Started Journal Service.
[4.675340 0.017770] [  OK  ] Mounted Huge Pages File System.
[4.687598 0.012258] [  OK  ] Mounted Kernel Debug File System.
[4.704240 0.016642] [  OK  ] Started Setup Virtual Console.
[4.716019 0.011779] [FAILED] Failed to start Load Kernel Modules.
[4.730071 0.014052] See 'systemctl status systemd-modules-load.service' for details.
[4.747648 0.017577] [  OK  ] Mounted POSIX Message Queue File System.
[4.761738 0.014090] [  OK  ] Started Remount Root and Kernel File Systems.
[4.774320 0.012582] [  OK  ] Mounted Temporary Directory (/tmp).
[4.801222 0.026902]          Starting Create Static Device Nodes in /dev...
[4.816618 0.015396]          Mounting Kernel Configuration File System...
[4.829952 0.013334]          Starting Apply Kernel Variables...
[4.846007 0.016055]          Starting Flush Journal to Persistent Storage...
[4.865149 0.019142] [  OK  ] Started Create Static Device Nodes in /dev.
[4.875635 0.010486] [  OK  ] Started udev Coldplug all Devices.
[4.886958 0.011323] [  OK  ] Mounted Kernel Configuration File System.
[4.905218 0.018260] [  OK  ] Started Apply Kernel Variables.
[4.923528 0.018310] [  OK  ] Reached target Local File Systems (Pre).
[4.938688 0.015160] [  OK  ] Reached target Containers.
[4.955485 0.016797]          Mounting /var/volatile...
[4.969426 0.013941]          Starting udev Kernel Device Manager...
[4.986649 0.017223] [  OK  ] Mounted /var/volatile.
[4.999558 0.012909] [  OK  ] Started udev Kernel Device Manager.
[5.013419 0.013861] [    3.983342] systemd-journald[2197]: Received request to flush runtime journal from PID 1
[5.023459 0.010040]          Starting Network Service...
[5.036371 0.012912]          Starting Start Psplash Boot Screen...
[5.049033 0.012662]          Starting Bind mount volatile /var/cache...
[5.064809 0.015776]          Starting Bind mount volatile /var/lib...
[5.081400 0.016591]          Starting Bind mount volatile /var/spool...
[5.100307 0.018907] [  OK  ] Started Network Service.
[5.121046 0.020739] [  OK  ] Started Flush Journal to Persistent Storage.
[5.137125 0.016079] [  OK  ] Started Start Psplash Boot Screen.
[5.151326 0.014201] [  OK  ] Started Bind mount volatile /var/cache.
[5.167916 0.016590] [  OK  ] Started Bind mount volatile /var/spool.
[5.186957 0.019041] [  OK  ] Found device /dev/ttyLP0.
[5.253469 0.066512]          Starting Load Kernel Modules...
[5.271441 0.017972]          Starting Setup Virtual Console...
[5.285567 0.014126]          Starting File System Check on Root Device...
[5.303213 0.017646] [FAILED] Failed to start Load Kernel Modules.
[5.321937 0.018724] See 'systemctl status systemd-modules-load.service' for details.
[5.322691 0.000754] [  OK  ] Started Setup Virtual Console.
[5.323355 0.000664]          Starting Start Psplash Boot Screen...
[5.324700 0.001345] [  OK  ] Started Start Psplash Boot Screen.
[5.331661 0.006961] [    4.303238] Atheros 8031 ethernet 5b040000.ethernet-1:00: attached PHY driver [Atheros 8031 ethernet] (mii_bus:phy_addr=5b040000.ethernet-1:00, irq=POLL)
[5.348200 0.016539] [    4.318698] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[5.379485 0.031285] [  OK  ] Started File System Check on Root Device.
[5.445163 0.065678] [    4.416805] EXT4-fs (mmcblk0p4): recovery complete
[5.468767 0.023604] [    4.421753] EXT4-fs (mmcblk0p4): mounted filesystem with ordered data mode. Opts: (null)
[5.471839 0.003072] [    4.425809] EXT4-fs (mmcblk0p3): recovery complete
[5.472531 0.000692] [    4.435074] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[6.423478 0.950947] [  OK  ] Started Bind mount volatile /var/lib.
[6.442096 0.018618] [  OK  ] Reached target Local File Systems.
[6.457229 0.015133]          Starting Create Volatile Files and Directories...
[6.472543 0.015314]          Starting Load/Save Random Seed...
[6.486131 0.013588] [FAILED] Failed to start Create Volatile Files and Directories.
[6.500587 0.014456] See 'systemctl status systemd-tmpfiles-setup.service' for details.
[6.519075 0.018488] [  OK  ] Started Load/Save Random Seed.
[6.534497 0.015422]          Starting Network Time Synchronization...
[6.547270 0.012773]          Starting Update UTMP about System Boot/Shutdown...
[6.560594 0.013324]          Starting Run pending postinsts...
[6.588598 0.028004] [  OK  ] Started Update UTMP about System Boot/Shutdown.
[6.632715 0.044117] [FAILED] Failed to start Run pending postinsts.
[6.648304 0.015589] See 'systemctl status run-postinsts.service' for details.
[6.743265 0.094961] [  OK  ] Started Network Time Synchronization.
[6.752815 0.009550] [  OK  ] Reached target System Initialization.
[6.764744 0.011929] [  OK  ] Started Daily rotation of log files.
[6.776892 0.012148] [  OK  ] Listening on Avahi mDNS/DNS-SD Stack Activation Socket.
[6.788377 0.011485] [  OK  ] Started dnf makecache timer.
[6.797177 0.008800] [    5.769990] switch cluster 0 cpu-freq governor to schedutil
[6.803041 0.005864] [  OK  ] Started dnf-automatic-install timer.
[6.816459 0.013418] [  OK  ] Started dnf-automatic timer.
[6.824797 0.008338] [    5.797794] switch cluster 1 cpu-freq governor to schedutil
[6.830800 0.006003] [  OK  ] Started dnf-automatic-download timer.
[6.844602 0.013802] [  OK  ] Listening on D-Bus System Message Bus Socket.
[6.870564 0.025962] [  OK  ] Listening on dropbear.socket.
[6.884223 0.013659] [  OK  ] Started dnf-automatic-notifyonly timer.
[6.896210 0.011987] [  OK  ] Started Daily Cleanup of Temporary Directories.
[6.908312 0.012102] [  OK  ] Reached target Timers.
[6.920583 0.012271] [  OK  ] Listening on RPCbind Server Activation Socket.
[6.932013 0.011430] [  OK  ] Reached target Sockets.
[6.944324 0.012311] [  OK  ] Reached target Basic System.
[6.960054 0.015730]          Starting QRTR Nameserver...
[6.976278 0.016224]          Starting Save/Restore Sound Card State...
[6.992567 0.016289] [  OK  ] Started Updates psplash to basic.
[7.008441 0.015874] [  OK  ] Started Job spooling tools.
[7.023039 0.014598]          Starting Telephony service...
[7.039936 0.016897] [  OK  ] Started Hardware RNG Entropy Gatherer Daemon.
[7.045143 0.005207] [    6.017351] random: crng init done
[7.048856 0.003713] [    6.022065] random: 7 urandom warning(s) missed due to ratelimiting
[7.069193 0.020337] [  OK  ] Started TEE Supplicant.
[7.082345 0.013152]          Starting Network Time Service (one-shot ntpdate mode)...
[7.095142 0.012797] [  OK  ] Started Configuration for i.MX GPU (Former rc_gpu.S).
[7.113822 0.018680]          Starting Avahi mDNS/DNS-SD Stack...
[7.128498 0.014676]          Starting RPC Bind Service...
[7.146746 0.018248] [  OK  ] Started D-Bus System Message Bus.
[7.184996 0.038250]          Starting Connection service...
[7.199662 0.014666]          Starting System Logging Service...
[7.220988 0.021326]          Starting Login Service...
[7.243076 0.022088] [  OK  ] Started Periodic Command Scheduler.
[7.258394 0.015318] [  OK  ] Started Save/Restore Sound Card State.
[7.278859 0.020465] [  OK  ] Started Network Time Service (one-shot ntpdate mode).
[7.297722 0.018863] [  OK  ] Started RPC Bind Service.
[7.313383 0.015661] [  OK  ] Started System Logging Service.
[7.327194 0.013811] [  OK  ] Started Telephony service.
[7.340477 0.013283] [  OK  ] Started Avahi mDNS/DNS-SD Stack.
[7.353229 0.012752] [  OK  ] Started Login Service.
[7.364620 0.011391] [  OK  ] Started Connection service.
[7.376966 0.012346] [  OK  ] Reached target Network.
[7.390339 0.013373]          Starting DNS forwarder and DHCP server...
[7.405047 0.014708]          Starting /etc/rc.local Compatibility...
[7.419619 0.014572]          Starting Iptables Masquerade...
[7.438555 0.018936] [  OK  ] Started Update psplash to network.
[7.454160 0.015605]          Starting Terminate Psplash Boot Screen...
[7.468775 0.014615]          Starting Permit User Sessions...
[7.482792 0.014017]          Starting Kernel Logging Service...
[7.497343 0.014551] [  OK  ] Started NFS status monitor for NFSv2/3 locking..
[7.511360 0.014017]          Starting NTP client/server...
[7.523871 0.012511] [  OK  ] Reached target Sound Card.
[7.543122 0.019251] [  OK  ] Started /etc/rc.local Compatibility.
[7.558706 0.015584] [FAILED] Failed to start Iptables Masquerade.
[7.572299 0.013593] See 'systemctl status iptables-masquerade.service' for details.
[7.592059 0.019760] [FAILED] Failed to start Terminate Psplash Boot Screen.
[7.603579 0.011520] See 'systemctl status psplash-quit.service' for details.
[7.621624 0.018045] [  OK  ] Started Permit User Sessions.
[7.633282 0.011658] [  OK  ] Started NTP client/server.
[7.646249 0.012967] [FAILED] Failed to start DNS forwarder and DHCP server.
[7.659687 0.013438] See 'systemctl status dnsmasq.service' for details.
[7.707738 0.048051]          Starting Hostname Service...
[7.718792 0.011054]          Starting WPA supplicant...
[7.731691 0.012899]          Starting Weston Wayland Compositor (on tty7)...
[7.749781 0.018090] [  OK  ] Started Serial Getty on ttyLP0.
[7.761932 0.012151] [  OK  ] Started Getty on tty1.
[7.783657 0.021725] [  OK  ] Started Weston Wayland Compositor (on tty7).
[7.798498 0.014841] [  OK  ] Started WPA supplicant.
[7.814891 0.016393]          Stopping NTP client/server...
[7.824218 0.009327]          Stopping Network Time Synchronization...
[7.847295 0.023077] [  OK  ] Stopped NTP client/server.
[7.868255 0.020960] [  OK  ] Stopped Network Time Synchronization.
[7.890620 0.022365] [  OK  ] Started Kernel Logging Service.
[7.909398 0.018778] [  OK  ] Started Hostname Service.
[7.925595 0.016197] [  OK  ] Created slice User Slice of root.
[7.939096 0.013501] [  OK  ] Started Session c1 of user root.
[7.956081 0.016985]          Starting User Manager for UID 0...
[7.969216 0.013135] [    6.943021] audit: type=1006 audit(1645671919.071:2): pid=3812 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=1 res=1
[7.984919 0.015703]          Starting NTP client/server...
[8.019798 0.034879] [  OK  ] Started NTP client/server.
[8.047572 0.027774] [  OK  ] Started User Manager for UID 0.
[8.142971 0.095399]          Stopping User Manager for UID 0...
[8.175139 0.032168] [  OK  ] Stopped User Manager for UID 0.
[8.186683 0.011544] [  OK  ] Removed slice User Slice of root.
[9.438151 1.251468] [    8.410594] fec 5b040000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[9.443466 0.005315] [    8.418422] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[13.766029 4.322563]
[13.777643 0.011614] NXP i.MX Release Distro 4.14-sumo imx8qmmek ttyLP0
[13.780438 0.002795]
[13.787704 0.007266] imx8qmmek login:

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【Linux 系统启动优化测试工具的使用——grabserial 】

Linux 系统启动优化测试工具的使用——grabserial

Linux 系统启动优化测试工具的使用——grabserial

1、grabserial工具安装

2、grabserial工具使用

3、grabserial效果展示

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