Hi all,      And When I turn off the log, its bootlog like this:

U-Boot 2019.01-00079-g3420a6fc6e-dirty (Feb 19 2019 - 17:19:16 +0800)

Qualcomm Atheros QCA9561 ver 1 rev 0 Model: AP152 Reference Board DRAM:  128 MiB Loading Environment from SPI Flash... SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB, mapped at 9f000000 *** Warning - bad CRC, using default environment

In:    uart@18020000 Out:   uart@18020000 Err:   uart@18020000 Net:    Warning: eth@0x19000000 (eth0) using random MAC address - 56:87:3c:61:9b:50 eth0: eth@0x19000000 Hit any key to stop autoboot:  0  ap152 # bootm 0x1f060000 ## Booting kernel from Legacy Image at 1f060000 ...    Image Name:   MIPS OpenWrt Linux-4.14.101    Image Type:   MIPS Linux Kernel Image (lzma compressed)    Data Size:    1615030 Bytes = 1.5 MiB    Load Address: 80060000    Entry Point:  80060000    Verifying Checksum ... OK    Uncompressing Kernel Image ... OK [    0.000000] Linux version 4.14.101 (xxx@xxx-PC) (gcc version 7.4.0 (OpenWrt GCC 7.4.0 r8997-488af51f81)) #0 Mon Feb 18 15:11:32 2019 [    0.000000] bootconsole [early0] enabled [    0.000000] CPU0 revision is: 00019750 (MIPS 74Kc) [    0.000000] MIPS: machine is ROSINSON WR818 [    0.000000] SoC: Qualcomm Atheros QCA956X ver 1 rev 0 [    0.000000] Determined physical RAM map: [    0.000000]  memory: 08000000 @ 00000000 (usable) [    0.000000] Initrd not found or empty - disabling initrd [    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes. [    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes [    0.000000] Zone ranges: [    0.000000]   Normal   [mem 0x0000000000000000-0x0000000007ffffff] [    0.000000] Movable zone start for each node [    0.000000] Early memory node ranges [    0.000000]   node   0: [mem 0x0000000000000000-0x0000000007ffffff] [    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff] [    0.000000] random: get_random_bytes called from start_kernel+0x8c/0x474 with crng_init=0 [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512 [    0.000000] Kernel command line: console=ttyS0,115200n8 rootfstype=squashfs,jffs2 [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes) [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) [    0.000000] Writing ErrCtl register=00000000 [    0.000000] Readback ErrCtl register=00000000 [    0.000000] Memory: 123184K/131072K available (3777K kernel code, 150K rwdata, 912K rodata, 1232K init, 204K bss, 7888K reserved, 0K cma-reserved) [    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [    0.000000] NR_IRQS: 51 [    0.000000] CPU clock: 775.000 MHz [    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 4932285024 ns [    0.000007] sched_clock: 32 bits at 387MHz, resolution 2ns, wraps every 5541893118ns [    0.008841] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216) [    0.075897] pid_max: default: 32768 minimum: 301 [    0.081292] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [    0.088805] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [    0.100195] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [    0.111385] futex hash table entries: 256 (order: -1, 3072 bytes) [    0.118370] pinctrl core: initialized pinctrl subsystem [    0.125117] NET: Registered protocol family 16 [    0.152720] clocksource: Switched to clocksource MIPS [    0.159331] NET: Registered protocol family 2 [    0.164932] TCP established hash table entries: 1024 (order: 0, 4096 bytes) [    0.172894] TCP bind hash table entries: 1024 (order: 0, 4096 bytes) [    0.180116] TCP: Hash tables configured (established 1024 bind 1024) [    0.187461] UDP hash table entries: 256 (order: 0, 4096 bytes) [    0.194136] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [    0.201461] NET: Registered protocol family 1 [    0.209168] Crashlog allocated RAM at address 0x3f00000 [    0.216385] workingset: timestamp_bits=30 max_order=15 bucket_order=0 [    0.227688] squashfs: version 4.0 (2009/01/31) Phillip Lougher [    0.234346] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc. [    0.253234] io scheduler noop registered [    0.257682] io scheduler deadline registered (default) [    0.263810] ar7200-usb-phy usb-phy: phy reset is missing [    0.271331] pinctrl-single 1804002c.pinmux: 544 pins at pa b804002c size 68 [    0.280201] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled [    0.288040] console [ttyS0] disabled [    0.292122] 18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 8, base_baud = 1562500) is a 16550A [    0.301943] console [ttyS0] enabled [    0.301943] console [ttyS0] enabled [    0.309500] bootconsole [early0] disabled [    0.309500] bootconsole [early0] disabled [    0.332542] m25p80 spi0.0: w25q128 (16384 Kbytes) [    0.337492] 5 fixed-partitions partitions found on MTD device spi0.0 [    0.344060] Creating 5 MTD partitions on "spi0.0": [    0.349014] 0x000000000000-0x000000040000 : "u-boot" [    0.354834] 0x000000040000-0x000000050000 : "u-boot-env" [    0.360944] 0x000000050000-0x000000060000 : "factory" [    0.366831] 0x000000060000-0x000000fe0000 : "firmware" [    0.374973] 2 uimage-fw partitions found on MTD device firmware [    0.381090] Creating 2 MTD partitions on "firmware": [    0.386258] 0x000000000000-0x000000190000 : "kernel" [    0.392027] 0x000000190000-0x000000f80000 : "rootfs" [    0.397783] mtd: device 5 (rootfs) set to be root filesystem [    0.403703] 1 squashfs-split partitions found on MTD device rootfs [    0.410095] 0x000000440000-0x000000f80000 : "rootfs_data" [    0.416295] 0x000000ff0000-0x000001000000 : "art" [    0.422691] libphy: Fixed MDIO Bus: probed [    0.763078] libphy: ag71xx_mdio: probed [    0.770036] switch0: Atheros AR8337 rev. 2 switch registered on mdio-bus.0 [    1.424526] ag71xx 19000000.eth: invalid MAC address, using random address [    1.763882] ag71xx 19000000.eth: connected to PHY at mdio-bus.0:00 [uid=004dd036, driver=Atheros AR8216/AR8236/AR8316] [    1.775479] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:SGMII [    1.783515] NET: Registered protocol family 10 [    1.791439] Segment Routing with IPv6 [    1.795358] NET: Registered protocol family 17 [    1.799984] 8021q: 802.1Q VLAN Support v1.8 [    1.810014] VFS: Mounted root (squashfs filesystem) readonly on device 31:5. [    1.824049] Freeing unused kernel memory: 1232K [    1.828729] This architecture does not have kernel memory protection.