Add support for Mikrotik RB912UAG-2HPnD r2

I also received a 912 board back today with an older bootloader and still containing routerOS.

Ill do some testing with it using ramfs next week.

also @rogerpueyo posted something that could aid this.

Hi @Lipton2kirov,

I've just posted a pull request to add support for the RouterBOARD 922UAGS-5HPacD on the ath79 target. It has a different SoC (QCA9558) but you might find it useful, since it has things in common (both SPI NOR and NAND flash, USB, etc.). Please find it at https://github.com/openwrt/openwrt/pull/2733 .

Besides that, the rbextract package (with ath79) supports the newest LZOR-compressed caldata, the former ERD-tagged and there is a PR for supporting older devices which had the caldata encoded right there with RLE (https://github.com/openwrt/openwrt/pull/2731). The code is much clearer there than in the ar71xx target, so I'd strongly encourage you to give it a try.

I received a Mikrotik hAP AC2 USr2 revision, and saw that the radio calibration chunk id has been changed.

It appears instead of Chunk ID of 0x1, they moved it to 0x8201 and 0x8001

Try the following ( change in either rbextract, or for ar71xx/ath79 the rb_get_wlan_data function ):

/* No Radio Calibration Data Found
err = routerboot_find_tag(buf_lzo_out + erd_offset,
                                          lzo_out_len - erd_offset,
                                          0x1, &erd_tag, &erd_tag_len);
*/

// This finds 5.8GHz radio calibration data
err = routerboot_find_tag(buf_lzo_out + erd_offset,
                                          lzo_out_len - erd_offset,
                                          0x8201, &erd_tag, &erd_tag_len);

The Mikrotik hAP AC2 is little endian, so you may have to convert to big endian ( not sure ) for the rb912.

You can do a hexdump on the hard_config and look for the ERD magic number. The first chunk is directly after the ERD magic ( atleast on the hAP AC2 ).

Hope this helps.

I have a big box full (20+) of RB951Ui-2HnD, but WiFi is not getting detected on any of them.

Please do let me know if any information from the devices is required for further debugging.

None of them have RouterOS as all of them are already flashed with OpenWrt 18.06.2.

after a few very busy weeks I should be able to go indepth next week.

fingers crossed.

i provided 2 serials to MikroTik and they confirmed the hardware is really identical.
The only difference was the brand of SPI chip and bootloader firmware.

They were honestly also surprised that wifi didn't work using OpenWrt

Thanks for your response.

https://github.com/openwrt/openwrt/pull/2729/commits/3bf97ac9d66dfc373c4f637b0bed2e81e4463290 It worked with this pull request, which I tried on 19.07.

My results are specific to RB951Ui-2HnD.

2 Likes

Ok,
currently searching for the issue in detail.

I have 2x rb912-5HPnD, one is R1, one is R2
Both were given this treatment:

  • current latest stable
  • current latest bootloader
  • both set to factory default config
  • took copies of both bootlogs and partitions

Compared following partitions (Bold = differences found):

mtd0: 0000c000 00001000 "routerboot"
mtd1: 00001000 00001000 "hard_config"
mtd2: 00001000 00001000 "bios"
mtd3: 00001000 00001000 "soft_config"
mtd4: 00040000 00020000 "booter"

Update: I flashed mtd partitions 0, 1, 2 & 3 to the bad board and still no wifi ..

GPIO delta:

Notice that GPIO 16 & 17 are low in the non-working board.

Update: exporting 16 & 17 and driving them high doesnt help. They also remain low no matter what I set

All details can be downloaded here

update:
Well .. haste is a bad thing.
above patch fixes it!

Ill clean it up for submission

Hello, Is there a chance that you be so kind and send me your images? So I can run/test it on my ones. Maybe a download link. Or if your answer is yes than I will give you a mail-address.

I have the same router board but the file you send me is a bit different. How to use it? I mean I usually boot it via tftp. The same way here? And i really appreciate it. Thank you.

Boot your router with TFTP, ssh this file to the router and install using sysupgrade. If your router already has OpenWrt, then you can directly sysupgrade with this file.

I have flashed it. No reaction anymore from the router. Is there no dhcp activated or has it anpther ip than 192.168.1.1 ?

@codemarauder @xback
Hello! Do I understand correctly that the fix didn't make it into the master branch? So then how do I apply the patch to the current code? Or better yet, can you please share the compiled image?

Hello,

Here is the link to the patched firmware - tested on RB951Ui-2HnD

Port configuration are as below:

Port 1: Not in use
Port 2: WAN (DHCP)
Port 3: WAN2 (DHCP)
Port 4,5: LAN

Please note that since this is a custom image, it creates a VPN tunnel to my server as soon as Internet is available. You may want to disable it in /etc/config/openvpn.

I haven't yet tried 19.07.4 or patched that source code yet, but should be able to do it next week.

Hello,

I have been attempting to get 19.07.7 running on several RB912UAG-2HPnD r2 revision boards, but on all of them I am seeing a bootloop issue after the sysupgrade using the stock images. Below is the serial output of the vmlinux boot which also does not exhibit any issues with UART output, and the serial output right after sysupgrade which triggers the continuous rebooting as well as somehow immediately causing UART output issues as seen in the sysupgrade log.

Can anyone take a look at the logs and give any feedback on what I can do to track this issue down? I was able to build an image from the same branch, and at least did not see a bootloop issue, but USB/Mini-PCIe was not detected at minimum with WiFi untested.

Thank you in advance for any help provided!

Vmlinux Image Used

Sysupgrade Image Used

RB912UAG_2HPnD_r2_vmlinux_boot_19.07.7

[    0.000000] Linux version 4.14.221 (builder@buildhost) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11306-c4a6851c72)) #0 Mon Feb 15 15:22:37 2021
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[    0.000000] SoC: Atheros AR9342 rev 3
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] User-defined physical RAM map:
[    0.000000]  memory: 04000000 @ 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 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] random: get_random_bytes called from 0x80529740 with crng_init=0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: benand_no_swecc=2 parts=1 boot_part_size=4194304 gpio=97855 HZ=300000000 mem=64M kmac=48:8F:5A:8E:C7:CE board=711Gr100 board=711Gr100 board_rev=r2 bver=6.44.6 hw_opt=02640005 boot=0 mlc=11 console=ttyS0,115200 rootfstype=squashfs noinitrd
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 56888K/65536K available (4195K kernel code, 173K rwdata, 524K rodata, 2524K init, 213K bss, 8648K 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] Clocks: CPU:600.000MHz, DDR:350.000MHz, AHB:350.000MHz, Ref:25.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns
[    0.000010] sched_clock: 32 bits at 300MHz, resolution 3ns, wraps every 7158278654ns
[    0.008895] Calibrating delay loop... 299.82 BogoMIPS (lpj=1499136)
[    0.086005] pid_max: default: 32768 minimum: 301
[    0.091491] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.099011] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.109838] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.121067] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.129648] NET: Registered protocol family 16
[    0.138932] MIPS: machine is Mikrotik RouterBOARD RB912UAG-2HPnD
[    0.407026] clocksource: Switched to clocksource MIPS
[    0.413985] NET: Registered protocol family 2
[    0.420019] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.428014] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.435244] TCP: Hash tables configured (established 1024 bind 1024)
[    0.442642] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.449353] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.456768] NET: Registered protocol family 1
[    2.577043] random: fast init done
[    4.062525] Crashlog allocated RAM at address 0x3f00000
[    4.070283] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    4.083227] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    4.089918] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    4.260268] io scheduler noop registered
[    4.264726] io scheduler deadline registered (default)
[    4.271115] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    4.280784] console [ttyS0] disabled
[    4.305039] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 1562500) is a 16550A
[    4.314854] console [ttyS0] enabled
[    4.314854] console [ttyS0] enabled
[    4.322423] bootconsole [early0] disabled
[    4.322423] bootconsole [early0] disabled
[    4.341674] m25p80 spi0.0: found gd25d05, expected m25p80
[    4.348981] m25p80 spi0.0: gd25d05 (64 Kbytes)
[    4.402746] Creating 4 MTD partitions on "spi0.0":
[    4.407787] 0x000000000000-0x00000000c000 : "routerboot"
[    4.439766] 0x00000000c000-0x00000000d000 : "hard_config"
[    4.471573] 0x00000000d000-0x00000000e000 : "bios"
[    4.502862] 0x00000000e000-0x00000000f000 : "soft_config"
[    4.535192] NAND flash driver for the RouterBOARD 91x series
[    4.543425] nand: device found, Manufacturer ID: 0xef, Chip ID: 0xf1
[    4.550065] nand: Winbond W29N01HV
[    4.553586] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[    4.561436] Scanning device for bad blocks
[    4.680114] Creating 3 MTD partitions on "W29N01HV":
[    4.685280] 0x000000000000-0x000000040000 : "booter"
[    4.716572] 0x000000040000-0x000000400000 : "kernel"
[    4.748040] 0x000000400000-0x000008000000 : "ubi"
[    4.783221] libphy: Fixed MDIO Bus: probed
[    4.822803] libphy: ag71xx_mdio: probed
[    5.547905] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd074, driver=Atheros 8031 ethernet]
[    5.558926] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: rgmii
[    5.571418] MikroTik RouterBOARD hardware configuration sysfs driver v0.03
[    5.579800] NET: Registered protocol family 10
[    5.589220] Segment Routing with IPv6
[    5.593116] NET: Registered protocol family 17
[    5.597840] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    5.611243] 8021q: 802.1Q VLAN Support v1.8
[    5.620087] UBI: auto-attach mtd6
[    5.623558] ubi0: attaching mtd6
[    5.901123] ubi0: scanning is finished
[    5.922472] ubi0: attached mtd6 (name "ubi", size 124 MiB)
[    5.928219] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[    5.935315] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    5.942337] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[    5.949540] ubi0: good PEBs: 992, bad PEBs: 0, corrupted PEBs: 0
[    5.955744] ubi0: user volume: 3, internal volumes: 1, max. volumes count: 128
[    5.963216] ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 1989761632
[    5.972657] ubi0: available PEBs: 0, total reserved PEBs: 992, PEBs reserved for bad PEB handling: 20
[    5.982282] ubi0: background thread "ubi_bgt0d" started, PID 346
[    5.990265] block ubiblock0_1: created from ubi0:1(rootfs)
[    5.995949] ubiblock: device ubiblock0_1 (rootfs) set to be root filesystem
[    6.021988] Freeing unused kernel memory: 2524K
[    6.026679] This architecture does not have kernel memory protection.
[    6.051775] init: Console is alive
[    6.055596] init: - watchdog -
[    6.083942] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    6.093420] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    6.111697] init: - preinit -
[    6.316852] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    6.349084] random: procd: uninitialized urandom read (4 bytes read)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[    8.418553] eth0: link up (100Mbps/Full duplex)
[    8.423279] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    9.523755] eth0: link down
[    9.540599] procd: - early -
[    9.543715] procd: - watchdog -
[   10.149156] procd: - watchdog -
[   10.152812] procd: - ubus -
[   10.164027] random: ubusd: uninitialized urandom read (4 bytes read)
[   10.206683] random: ubusd: uninitialized urandom read (4 bytes read)
[   10.213883] random: ubusd: uninitialized urandom read (4 bytes read)
[   10.221796] procd: - init -
Please press Enter to activate this console.
[   10.761223] kmodloader: loading kernel modules from /etc/modules.d/*
[   10.790262] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   10.815694] Loading modules backported from Linux version v4.19.161-0-gdaefdc9eb24b
[   10.823690] Backport generated by backports.git v4.19.161-1-0-g4bb568fe
[   10.849826] ip_tables: (C) 2000-2006 Netfilter Core Team
[   10.876915] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[   11.019454] xt_time: kernel timezone is -0000
[   11.146266] urngd: v1.0.2 started.
[   11.160188] PPP generic driver version 2.4.2
[   11.178026] NET: Registered protocol family 24
[   11.289432] ieee80211 phy0: Atheros AR9340 Rev:3 mem=0xb8100000, irq=47
[   11.387500] kmodloader: done loading kernel modules from /etc/modules.d/*
[   11.498706] random: crng init done
[   11.502245] random: 6 urandom warning(s) missed due to ratelimiting
[   29.057340] br-lan: port 1(eth0) entered blocking state
[   29.062756] br-lan: port 1(eth0) entered disabled state
[   29.068556] device eth0 entered promiscuous mode
[   29.111986] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[   31.138619] eth0: link up (100Mbps/Full duplex)
[   31.143363] br-lan: port 1(eth0) entered blocking state
[   31.148807] br-lan: port 1(eth0) entered forwarding state
[   31.177126] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[  179.858535] eth0: link up (100Mbps/Full duplex)
[  179.863274] br-lan: port 1(eth0) entered blocking state
[  179.868720] br-lan: port 1(eth0) entered forwarding state

Below is the sysupgrade log of issue mentioned above.

RB912UAG_2HPnD_r2_nand_large_squashfs_sysuprade_19.07.7

Watchdog handover: fd=3
- watchdog -
killall: telnetd: no process killed
killall: ash: no process killed
Sending TERM to remaining processes ... netifd odhcpd uhttpd ntpd ubusd askfirst urngd logd rpcd dnsmasq
Sending KILL to remaining processes ...
Performing system upgrade...
Unlocking kernel ...
Erasing kernel ...
Writing data to block 0 at offset 0x0
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▒▒x▒▒▒Q:▒▒$▒▒ŏ]j▒^X▒QC▒Lc▒▒▒▒7▒▒▒▒/▒▒▒▒I▒H▒(▒g5▒.▒▒@v▒▒^HQ▒nW▒:▒▒F▒1^P  ⛅▒▒^_ܯ▒ ▒▒ ▒C▒^@nѰ▒▒▒▒6▒/▒^G▒▒jS[▒,▒}▒N^D^^▒▒Ј|▒▒'▒d▒LH{▒▒3C▒Bݮ▒±▒▒▒▒▒t^_▒▒^G^G▒%▒▒▒3d▒▒^\^E▒▒▒▒1.▒▒Pg▒▒▒^Xx▒▒▒E▒▒▒▒|▒Writing data to block 2 at offset 0x40000
Ǔ1▒▒^\^R
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▒K▒"V▒gj▒▒O▒▒M▒.▒^ۥ▒▒>▒9▒^E9^G  ▒H▒▒▒▒^@▒▒8▒I▒▒▒▒|▒F▒▒,0x▒▒▒▒▒▒k▒^H▒ː▒▒Xw[▒W▒! ▒▒oo▒▒o▒▒▒▒^[▒C▒'G4▒▒▒▒▒;▒▒▒k▒.▒▒▒▒▒▒▒▒@▒▒▒▒▒▒^F▒▒8▒▒▒EZ▒▒▒g▒▒"ǫ▒~▒▒▒[^T▒▒6▒N▒▒▒`W▒▒▒B▒▒[▒▒7x▒▒▒^P▒▒▒3▒▒▒H?^▒▒M▒▒▒I▒▒Writing data to block 3 at offset 0x60000
Šô▒Y^E%▒▒)▒▒/^B▒▒▒:▒▒
p▒▒Zhp^T▒5▒▒▒▒ל▒Á▒Q^GE!▒^N▒JF@g▒▒I▒▒▒▒^H.▒▒!▒▒▒<▒T▒k/▒▒^N▒O▒ܳ▒ǀ▒▒▒Mj▒▒▒▒"▒▒8p▒^C▒▒▒▒`I▒▒▒^G^TΤ%▒▒▒^L▒▒▒▒p▒▒kx^Kk▒^T/▒6^]z▒<p^X▒~▒\▒A▒i▒▒▒▒v▒R^A▒▒^C▒\▒▒    )▒▒▒▒FIB^T^\<▒▒▒▒▒▒▒J▒▒o5▒`▒▒▒▒▒^O|▒6▒N▒▒^E^O▒^EG;▒K▒▒▒▒▒▒▒>{a▒x▒▒e▒▒@▒fS՟*▒_▒▒▒▒s▒Q▒Writing data to block 4 at offset 0x80000
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▒▒▒▒^L▒▒▒▒▒▒z▒a^P^G@V▒C▒&5▒▒}V▒?▒▒▒▒▒s▒▒▒▒;▒▒▒p▒^^▒▒▒▒^^▒lm▒Y▒v▒^\▒Tښ?▒^Zm▒Q    ᴰ▒r▒▒^H▒▒ԓE▒e"▒^F▒▒▒▒▒▒0^P▒▒^P▒s▒)▒^R
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removing ubiblock0_1
[  426.980920] block ubiblock0_1: released
^@^@^@▒▒^@^@▒^@^@^@▒^@^@▒^@^@^@^@^@▒^@^@^@▒^@▒^@^@^@^@^@^@▒^@^@▒^@▒^@^@▒^@^@▒^@^@▒^@^@^@^@▒^@^@▒^@▒^@^@▒^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@▒^@^@▒^@^@^@^@▒^@^@^@▒^@^@▒^@^@^@^@▒^@^@^@^@^@^@^@▒^@^@▒^@^@@ ^@^@^A▒^@▒^@▒^@^@▒^@^@^@^@▒^@^@▒^@▒^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@▒^@^@▒^@^@▒^@^@^C^@▒^@^@▒^@▒^@^@▒^@^@▒^@^@▒^@▒^@^@^@^@▒^@▒^@^@▒^@^@▒^@^@▒^@^@▒^@^@^@^@▒^@^@▒^@^@▒^@^@^@^@^@^@^@^@^@^@^@^@^@^@▒^@▒^@^P^@▒^@^@▒^@^@▒^@▒^@^@^@^@ ▒^@^@▒^@^@▒^@^@^@^@^@^@▒^@▒^@^@^@^@^@▒^@^@▒^@^@▒^@▒^@ ^@▒^@^@▒^@▒^@^@^@^@^@^@Volume ID 0, size 14 LEBs (1777664 bytes, 1.6 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "none", alignment 1
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@▒^@^@▒^@^@▒^@@^@^@▒^@▒^@▒^@^@▒^@▒^@^@^@^@^@▒^@^@^@^@^@▒^@^@@^@^@^@^@▒^@^A^@▒^@^@▒^@^@^@ ^@▒^@^@^@^@^@^@^@▒^@^@^@^@^@^@^@^@^@Volume ID 1, size 21 LEBs (2666496 bytes, 2.5 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "rootfs", alignment 1
Set volume size to 118468608
^@^@^@^@^@^@^@^@^@^@^@▒^@▒▒^@^@^@^@^@▒^@^@▒^@^@▒^@^@▒^@^@▒^@^@▒^@▒^@^@^@^@^@^@▒^@^@@^@^@^@^@▒^@^A^@▒^@▒^@^@^@^@▒^@^@▒^@^@▒^@^@^@^@^@Volume ID 2, size 933 LEBs (118468608 bytes, 112.9 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "rootfs_data", alignment 1
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▒▒<^▒▒`t▒3[  429.103466] Removing MTD device #1 (hard_config) with use count 1
[  429.110997] gpio gpiochip2: REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED
[  429.118545] reboot: Restarting system


OpenWrt kernel loader for AR7XXX/AR9XXX
Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
Decompressing kernel... done!
Starting kernel at 80060000...

[    0.000000] Linux version 4.14.221 (builder@buildhost) (gcc version 7.5.0 (OpenWrt GCC 7.5.0 r11306-c4a6851c72)) #0 Mon Feb 15 15:22:37 2021
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[    0.000000] SoC: Atheros AR9342 rev 3
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] User-defined physical RAM map:
[    0.000000]  memory: 04000000 @ 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 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] random: get_random_bytes called from 0x80529740 with crng_init=0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: benand_no_swecc=2 ssr_val=255 parts=1 boot_part_size=4194304 gpio=130607 HZ=300000000 mem=64M kmac=48:8F:5A:8E:C7:CE board=711Gr100 board=711Gr100 board_rev=r2 ver=6.48 bver=6.44.6 hw_opt=02640005 boot=1 mlc=11 console=ttyS0,115200 rootfstype=squashfs noinitrd
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 59192K/65536K available (4195K kernel code, 173K rwdata, 524K rodata, 220K init, 213K bss, 6344K 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] Clocks: CPU:600.000MHz, DDR:350.000MHz, AHB:350.000MHz, Ref:25.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns
[    0.000010] sched_clock: 32 bits at 300MHz, resolution 3ns, wraps every 7158278654ns
[    0.008896] Calibrating delay loop... 299.82 BogoMIPS (lpj=1499136)
[    0.086005] pid_max: default: 32768 minimum: 301
[    0.091491] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.099010] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.109882] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.121112] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.129699] NET: Registered protocol family 16
[    0.139019] MIPS: machine is Mikrotik RouterBOARD RB912UAG-2HPnD
[    0.407121] clocksource: Switched to clocksource MIPS
[    0.414074] NET: Registered protocol family 2
[    0.420110] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.428114] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.435342] TCP: Hash tables configured (established 1024 bind 1024)
[    0.442742] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.449451] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.456866] NET: Registered protocol family 1
[    0.465728] Crashlog allocated RAM at address 0x3f00000
[    0.473385] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.486376] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.493060] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.517054] io scheduler noop registered
[    0.521575] io scheduler deadline registered (default)
[    0.527934] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.537577] console [ttyS0] disabled
[    0.561828] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 1562500) is a 16550A
[    0.571640] console [ttyS0] enabled
[    0.571640] console [ttyS0] enabled
[    0.579201] bootconsole [early0] disabled
[    0.579201] bootconsole [early0] disabled
[    0.597007] m25p80 spi0.0: found gd25d05, expected m25p80
[    0.605151] m25p80 spi0.0: gd25d05 (64 Kbytes)
[    0.610434] Creating 4 MTD partitions on "spi0.0":
[    0.615411] 0x000000000000-0x00000000c000 : "routerboot"
[    0.623041] 0x00000000c000-0x00000000d000 : "hard_config"
[    0.630349] 0x00000000d000-0x00000000e000 : "bios"
[    0.637866] 0x00000000e000-0x00000000f000 : "soft_config"
[    0.645440] NAND flash driver for the RouterBOARD 91x series
[    0.654082] nand: device found, Manufacturer ID: 0xef, Chip ID: 0xf1
[    0.660725] nand: Winbond W29N01HV
[    0.664246] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[    0.672099] Scanning device for bad blocks
[    0.742408] Creating 3 MTD partitions on "W29N01HV":
[    0.747619] 0x000000000000-0x000000040000 : "booter"
[    0.754780] 0x000000040000-0x000000400000 : "kernel"
[    0.761708] 0x000000400000-0x000008000000 : "ubi"
[    0.773061] libphy: Fixed MDIO Bus: probed
[    0.788320] libphy: ag71xx_mdio: probed
[    1.518000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=004dd074, driver=Atheros 8031 ethernet]
[    1.529026] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: rgmii
[    1.541458] MikroTik RouterBOARD hardware configuration sysfs driver v0.03
[    1.549808] NET: Registered protocol family 10
[    1.559079] Segment Routing with IPv6
[    1.562984] NET: Registered protocol family 17
[    1.567711] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    1.581115] 8021q: 802.1Q VLAN Support v1.8
[    1.589935] UBI: auto-attach mtd6
[    1.593413] ubi0: attaching mtd6
[    1.870861] ubi0: scanning is finished
[    1.892145] ubi0: attached mtd6 (name "ubi", size 124 MiB)
[    1.897891] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[    1.904989] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    1.912012] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[    1.919213] ubi0: good PEBs: 992, bad PEBs: 0, corrupted PEBs: 0
[    1.925419] ubi0: user volume: 3, internal volumes: 1, max. volumes count: 128
[    1.932889] ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 1989761632
[    1.942332] ubi0: available PEBs: 0, total reserved PEBs: 992, PEBs reserved for bad PEB handling: 20
[    1.951959] ubi0: background thread "ubi_bgt0d" started, PID 346
[    1.959912] block ubiblock0_1: created from ubi0:1(rootfs)
[    1.965597] ubiblock: device ubiblock0_1 (rootfs) set to be root filesystem
ih ▒▒Q▒^[^B▒▒'Ea1▒▒▒[    1.982087] VFS: Mounted root (squashfs filesystem) readonly on device 254:0.
[    1.991127] Freeing unused kernel memory: 220K
[    1.995725] This architecture does not have kernel memory protection.

▒E▒▒▒^Y▒&▒▒,▒Z▒[    2.008805] random: fast init done
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[    2.630903] init: - watchdog -
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▒▒▒▒▒▒▒%▒ٔ▒▒▒▒▒^]▒▒AC▒A6▒▒[▒▒ j▒▒▒~▒▒
▒▒7]▒▒ï&^C▒▒$▒J ▒▒4▒vO▒▒K▒▒▒̙▒▒񂯆▒y_▒▒c▒Mۍ?▒▒==▒▒ۜGn▒▒x"|▒▒O▒Tv▒▒▒▒>▒▒K▒▒*▒▒▒▒▒G▒▒▒^F▒^KI▒▒^^g▒P▒▒I)▒\▒▒▒T'P▒▒▒,▒▒▒9▒▒▒/▒M▒▒▒H▒▒>▒▒▒▒▒~ᾟ▒▒▒c▒▒▒▒▒▒▒▒▒^Y▒▒▒▒]▒▒▒c▒Ŝ]$▒$▒▒-▒▒/▒▒m^A*▒I▒▒8▒▒^\^E▒$▒▒▒J▒▒▒z▒^E▒g(70▒▒M▒▒Ѡ▒{a▒^N▒▒˼O▒▒▒H`K▒j▒y▒[▒Z▒▒▒[    3.656639] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    3.726197] usbcore: registered new interface driver usbfs
[    3.732056] usbcore: registered new interface driver hub
[    3.737687] usbcore: registered new device driver usb
[    3.749190] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.757975] ehci-platform: EHCI generic platform driver
[    3.766373] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    3.774477] ohci-platform: OHCI generic platform driver
[    3.780713] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    3.798808] init: - preinit -
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▒▒^C▒aE3▒▒▒▒(▒C^C▒▒▒:▒,^\▒^X▒▒U▒?▒^Y*▒Az▒^]\▒▒▒▒▒▒'▒tr^F▒^H▒▒(-^Lx▒▒^[▒4D▒z▒Z▒B|׫▒▒uZO(▒▒▒▒_8ܪJ▒^_^N▒p;▒^FI▒D^A▒▒C6T▒▒▒Pi▒▒▒▒u▒▒▒▒j▒^K^L▒▒▒ǯ^N▒▒▒▒g-ޅ▒▒^_▒▒▒.E8▒▒u
▒▒▒H▒^N▒▒o▒r▒w▒{\^B7▒a,▒▒E"▒߰▒O▒▒a\▒^C▒▒▒sr▒▒^\▒|▒▒u▒▒▒;▒;▒▒▒^Z▒▒▒^T<^_+▒▒▒#z▒vV▒;▒o▒▒;▒▒Q^\^[▒7j^E"▒#7/▒G[c}▒T▒w▒▒▒N▒   ▒▒^_▒▒^Np▒˜K▒V▒▒lm▒▒G▒l▒▒؛▒▒▒e▒A▒▒▒▒▒y▒▒^_▒[    4.496412] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    4.528664] random: procd: uninitialized urandom read (4 bytes read)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
^@^@^@▒▒▒^P^@▒^^▒^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@[    7.777925] UBIFS (ubi0:2): default file-system created
^@^@^@^@^@^@^@▒[    7.787395] UBIFS (ubi0:2): background thread "ubifs_bgt0_2" started, PID 411
^@^@▒▒^@^@▒▒▒▒▒^@^@[    7.907295] UBIFS (ubi0:2): UBIFS: mounted UBI device 0, volume 2, name "rootfs_data"
[    7.915400] UBIFS (ubi0:2): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[    7.925676] UBIFS (ubi0:2): FS size: 117071872 bytes (111 MiB, 922 LEBs), journal size 5840896 bytes (5 MiB, 46 LEBs)
[    7.936643] UBIFS (ubi0:2): reserved for root: 4952683 bytes (4836 KiB)
[    7.943493] UBIFS (ubi0:2): media format: w4/r0 (latest is w5/r0), UUID 666E629F-B673-4504-A5B0-AE85A1700DF4, small LPT model
▒▒^@[    7.957304] mount_root: overlay filesystem has not been fully initialized yet
[    7.965269] mount_root: switching to ubifs overlay
^@?^@▒^@▒[    8.007541] urandom-seed: Seed file not found (/etc/urandom.seed)
^_QJ}▒▒!▒▒^Z▒▒\U0▒w-▒{^E▒▒sjR▒ʹ▒▒▒▒,ّe▒o▒)▒}p^Gj▒ 3o▒▒▒@▒^Ā▒^L▒▒V        ▒▒^Z▒Z▒}ׄ+▒▒▒[h▒▒^B▒f^L▒4▒k_uX▒▒i~▒▒▒[    8.205092] procd: - early -
[    8.208308] procd: - watchdog -
[    8.868167] procd: - watchdog -
[    8.871823] procd: - ubus -
^C\w▒^]▒�^O▒▒^K▒▒Q▒#/B▒▒ۖ▒as▒▒x/^K▒▒3▒E▒`;▒▒P$[`▒#mխ▒Ӂ▒U▒▒▒^C▒▒,a▒n▒
▒6▒▒▒^@/▒▒▒y▒;b ▒▒▒^Y▒V▒ǿ▒0^G▒S▒
r▒▒[    8.963272] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.019518] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.026698] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.034621] procd: - init -
Please press Enter to activate this console.
b▒~~:9▒%=▒▒^TH#С▒i▒▒Y▒(?▒3,▒DY▒&gi▒(▒▒0▒▒▒▒▒▒l5<▒t▒▒do▒u▒2!▒^▒^R
i▒▒Y▒(?▒3,▒DY▒&gi▒(▒▒0^Z▒G▒▒\▒q▒▒h▒▒▒▒-l▒▒
f▒˧T^CYB▒V▒▒▒~▒▒▒▒i^O▒▒▒^O1.:▒|▒MwC▒'z▒▒0▒▒▒S▒▒▒▒&u▒z▒צ▒▒▒Please press Enter to activate this console.
[   10.019614] kmodloader: loading kernel modules from /etc/modules.d/*
[   10.144446] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   10.170865] Loading modules backported from Linux version v4.19.161-0-gdaefdc9eb24b
[   10.178856] Backport generated by backports.git v4.19.161-1-0-g4bb568fe
[   10.210051] ip_tables: (C) 2000-2006 Netfilter Core Team
[   10.237536] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[   10.321030] urngd: v1.0.2 started.
[   10.391312] xt_time: kernel timezone is -0000
[   10.540378] PPP generic driver version 2.4.2
[   10.558539] NET: Registered protocol family 24
[   10.664775] ieee80211 phy0: Atheros AR9340 Rev:3 mem=0xb8100000, irq=47
[   10.685910] random: crng init done
[   10.689494] random: 6 urandom warning(s) missed due to ratelimiting
[   10.787613] kmodloader: done loading kernel modules from /etc/modules.d/*
^@^@▒^@▒^@^@^@▒▒_L|▒9▒ڗ▒        ▒▒▒iX▒-▒▒▒▒~Ȁ▒#ǃ▒▒▒^R
▒▒iX▒-▒▒▒▒~Ȁ▒#ǃ▒▒▒▒:▒▒]x▒▒▒^B
!X▒▒VYy/▒"`▒▒1▒▒▒m^N▒^^R
!X▒▒VYy/▒"`▒▒1▒▒▒m^N▒^▒^K˙▒▒Ү▒HbЁޜ▒▒'WԄ▒▒▒▒▒▒ ^CN▒▒c▒tνE@▒^L^Fڀ^@▒^@^@^A^@^\K▒6^R
K▒6▒▒_^▒▒sв▒v▒U▒ɹ܀▒^G▒>H▒▒▒▒#▒▒▒▒0▒
#@^@▒▒^@^@^@^@Please press Enter to activate this console.
▒

BusyBox v1.30.1 () built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 OpenWrt 19.07.7, r11306-c4a6851c72
 -----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@(none):/# #@▒▒▒[   16.392556] Removing MTD device #1 (hard_config) with use count 1
[   16.400157] gpio gpiochip2: REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED
[   16.407785] reboot: Restarting system

I have been working on the wireless performance issues with some boards, any testing would be awesome.