normal startup

sudo cu -s 57600 -l /dev/tty.usbserial-A7036OBH
Password:
Connected.
[04040C0B][04040C0D]
DDR Calibration DQS reg = 00008887


U-Boot 1.1.3 (Dec  6 2016 - 11:20:23)

Board: Ralink APSoC
DRAM:  128 MB
relocate_code Pointer at: 87f68000
flash manufacture id: c2, device id 20 19
find flash: MX25L25635E
============================================
Ralink UBoot Version: 4.3.0.0
--------------------------------------------
ASIC 7628_MP (Port5<->None)
DRAM component: 1024 Mbits DDR, width 16
DRAM bus: 16 bit
Total memory: 128 MBytes
Flash component: SPI Flash
Date:Dec  6 2016  Time:11:20:23
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768

 ##### The CPU freq = 580 MHZ ####
 estimate memory size =128 Mbytes
RESET MT7628 PHY!!!!!!

GPIOMODE --> 50054404

GPIOMODE2 --> 5540551

Please choose the operation:
   1: Load system code to SDRAM via TFTP.
   2: Load system code then write to Flash via TFTP.
   3: Boot system code via Flash (default).
   4: Entr boot command line interface.
   7: Load Boot Loader code then write to Flash via Serial.
   9: Load Boot Loader code then write to Flash via TFTP.
 0

3: System Boot system code via Flash.
## Booting image at bc050000 ...
   Image Name:   MIPS OpenWrt Linux-4.14.95
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    1438137 Bytes =  1.4 MB
   Load Address: 80000000
   Entry Point:  80000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80000000) ...
## Giving linux memsize in MB, 128

Starting kernel ...

[    0.000000] Linux version 4.14.95 (buildbot@builds-03.infra.lede-project.org) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r7552-2f11a9e)) #0 Mon Jan 28 08:54:32 2019
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7688 ver:1 eco:2
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019655 (MIPS 24KEc)
[    0.000000] MIPS: machine is MediaTek LinkIt Smart 7688
[    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, PIPT, no 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 0x8042672c with crng_init=0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
[    0.000000] Kernel command line: console=ttyS2,57600 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=0000afe0
[    0.000000] Readback ErrCtl register=0000afe0
[    0.000000] Memory: 125224K/131072K available (3592K kernel code, 183K rwdata, 464K rodata, 168K init, 206K bss, 5848K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 256
[    0.000000] intc: using register map from devicetree
[    0.000000] CPU Clock: 580MHz
[    0.000000] timer_probe: no matching timers found
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[    0.000012] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[    0.015381] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[    0.087588] pid_max: default: 32768 minimum: 301
[    0.096960] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.109921] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.129652] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.149029] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.161132] pinctrl core: initialized pinctrl subsystem
[    0.172699] NET: Registered protocol family 16
[    0.186499] Can't analyze schedule() prologue at 8037dd78
[    0.215312] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.226525] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.237661] mt7621_gpio 10000600.gpio: registering 32 gpios
[    0.253543] clocksource: Switched to clocksource MIPS
[    0.264661] NET: Registered protocol family 2
[    0.274205] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.287909] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.300422] TCP: Hash tables configured (established 1024 bind 1024)
[    0.313116] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.324576] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.337191] NET: Registered protocol family 1
[    0.349118] Crashlog allocated RAM at address 0x3f00000
[    0.361014] workingset: timestamp_bits=30 max_order=15 bucket_order=0
[    0.379705] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.391143] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.421097] io scheduler noop registered
[    0.428771] io scheduler deadline registered (default)
[    0.439847] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.455267] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baud = 2500000) is a 16550A
[    0.473771] 10000d00.uart1: ttyS1 at MMIO 0x10000d00 (irq = 29, base_baud = 2500000) is a 16550A
[    0.491672] 10000e00.uart2: ttyS2 at MMIO 0x10000e00 (irq = 30, base_baud = 2500000) is a 16550A
[    0.509017] console [ttyS2] enabled
[    0.509017] console [ttyS2] enabled
[    0.522686] bootconsole [early0] disabled
[    0.522686] bootconsole [early0] disabled
[    0.539170] cacheinfo: Failed to find cpu0 device node
[    0.549382] cacheinfo: Unable to detect cache hierarchy for CPU 0
[    0.562274] spi-mt7621 10000b00.spi: sys_freq: 193333333
[    0.581123] m25p80 spi0.0: mx25l25635e (32768 Kbytes)
[    0.591235] 4 fixed-partitions partitions found on MTD device spi0.0
[    0.603820] Creating 4 MTD partitions on "spi0.0":
[    0.613309] 0x000000000000-0x000000030000 : "u-boot"
[    0.624164] 0x000000030000-0x000000040000 : "u-boot-env"
[    0.635575] 0x000000040000-0x000000050000 : "factory"
[    0.646522] 0x000000050000-0x000002000000 : "firmware"
[    0.727145] 2 uimage-fw partitions found on MTD device firmware
[    0.738908] 0x000000050000-0x0000001af1f9 : "kernel"
[    0.749683] 0x0000001af1f9-0x000002000000 : "rootfs"
[    0.760376] mtd: device 5 (rootfs) set to be root filesystem
[    0.773139] 1 squashfs-split partitions found on MTD device rootfs
[    0.785445] 0x000000400000-0x000002000000 : "rootfs_data"
[    0.798019] libphy: Fixed MDIO Bus: probed
[    0.817262] rt3050-esw 10110000.esw: link changed 0x00
[    0.829087] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    0.847370] NET: Registered protocol family 10
[    0.860366] Segment Routing with IPv6
[    0.867803] NET: Registered protocol family 17
[    0.876660] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    0.902329] 8021q: 802.1Q VLAN Support v1.8
[    0.912513] mtk-linkit bootstrap: Version  : LINKITS7688
[    0.923099] mtk-linkit bootstrap: Revision : REV3
[    0.932414] mtk-linkit bootstrap: setting up bootstrap latch
[    0.950425] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[    0.965372] Freeing unused kernel memory: 168K
[    0.974191] This architecture does not have kernel memory protection.
[    1.786937] init: Console is alive
[    1.793998] init: - watchdog -
[    2.433554] random: fast init done
[    2.770237] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    2.937774] usbcore: registered new interface driver usbfs
[    2.948803] usbcore: registered new interface driver hub
[    2.959460] usbcore: registered new device driver usb
[    2.975386] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.990019] ehci-platform: EHCI generic platform driver
[    3.010745] phy phy-10120000.usbphy.0: remote usb device wakeup disabled
[    3.024030] phy phy-10120000.usbphy.0: UTMI 16bit 30MHz
[    3.034399] ehci-platform 101c0000.ehci: EHCI Host Controller
[    3.045816] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[    3.061626] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[    3.103583] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[    3.117095] hub 1-0:1.0: USB hub found
[    3.124991] hub 1-0:1.0: 1 port detected
[    3.136065] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    3.149936] ohci-platform: OHCI generic platform driver
[    3.160652] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[    3.174183] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[    3.189985] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[    3.268566] hub 2-0:1.0: USB hub found
[    3.276504] hub 2-0:1.0: 1 port detected
[    3.288154] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    3.313002] init: - preinit -
[    4.415020] rt3050-esw 10110000.esw: link changed 0x00
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3[    4.611945] random: procd: uninitialized urandom read (4 bytes read)
] or [4] key and hit [enter] to select the debug level
[    7.972318] jffs2: notice: (386) jffs2_build_xattr_subsystem: complete building xattr subsystem, 27 of xdatum (0 unchecked, 27 orphan) and 27 of xref (27 dead, 0 orphan) found.
[    8.005219] mount_root: switching to jffs2 overlay
[    8.047785] overlayfs: upper fs does not support tmpfile.
[    8.064734] urandom-seed: Seeding with /etc/urandom.seed
[    8.229367] procd: - early -
[    8.235617] procd: - watchdog -
[    8.966749] procd: - watchdog -
[    8.973277] procd: - ubus -
[    9.191772] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.368916] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.382133] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.395890] procd: - init -
Please press Enter to activate this console.
[    9.772646] kmodloader: loading kernel modules from /etc/modules.d/*
[    9.874940] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    9.897774] Loading modules backported from Linux version wt-2017-11-01-0-gfe248fc2c180
[    9.913698] Backport generated by backports.git v4.14-rc2-1-31-g86cf0e5d
[    9.930209] ip_tables: (C) 2000-2006 Netfilter Core Team
[    9.950078] nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
[   10.026119] xt_time: kernel timezone is -0000
[   10.097168] mt76_wmac 10300000.wmac: ASIC revision: 76280001
[   11.125622] mt76_wmac 10300000.wmac: Firmware Version: 20151201
[   11.137431] mt76_wmac 10300000.wmac: Build Time: 20151201183641
[   11.163575] mt76_wmac 10300000.wmac: firmware init done
[   11.394980] PPP generic driver version 2.4.2
[   11.483394] NET: Registered protocol family 24
[   11.496534] kmodloader: done loading kernel modules from /etc/modules.d/*
[   12.634826] urandom_read: 5 callbacks suppressed
[   12.634837] random: jshn: uninitialized urandom read (4 bytes read)
[   21.645744] br-lan: port 1(eth0) entered blocking state
[   21.656181] br-lan: port 1(eth0) entered disabled state
[   21.666890] device eth0 entered promiscuous mode
[   21.788456] br-lan: port 1(eth0) entered blocking state
[   21.798872] br-lan: port 1(eth0) entered forwarding state
[   21.809814] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[   22.633681] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready