OpenWrt support for Asus RT-AX53U

lukasz92 · 2022-08-08T17:34:15.329Z

Quite interesting GPL, it looks like Asus is working on devices based on chips:
MT7986A, MT7986B, MT7981 - all ARM64

We would also see some devices in near future to work DBDC with each band 4x4:4, 802.11be, 1024QAM, 160MHz channels: MT7902 and MT7990, called Besra.
There are many patches for mt76, mac80211 and hostapd to support them - I hope - officially by mac80211 subsystem.

ireun · 2022-08-08T19:04:21.520Z

Also.. For the time being I will stick to STOCK FW, is there any reason to NOT update it to the newest version?
Is it possible that in the future some exploit will be available for older FW that would not need opening the case and soldering the serial header?
I'm currently at 3.0.0.4.382_44917

lukasz92 · 2022-08-08T20:00:59.408Z

you can enable SSH and reflash NAND with any image from stock FW

frollic · 2022-08-08T20:46:41.753Z

I don't own one, but people who do, are happy with it...

Waiting/hoping for wax206 support, kind of same as the rt3200, but got a 2.5gbe uplink/wan port.

But let's stay on topic, from now on.

Lennong · 2022-08-09T05:06:02.743Z

Could you share a how-to?

nemoforum · 2022-08-09T07:02:02.773Z

Yesterday I bought this device and tried to install OpenWRT, however, got a bootloop.
Restoraition is quite simple (thanks Asus).

Tried with last snapshot:
openwrt-ramips-mt7621-asus_rt-ax53u-squashfs-factory.bin e6cab292c8bbefc448b55a2125665b6658c23ba7fbb55d8c9a7a4915172b76bc | 8960.0 KB | Mon Aug 8 20:23:58 2022
as well as with build from https://firmware-selector.openwrt.org/?version=SNAPSHOT&target=ramips%2Fmt7621&id=asus_rt-ax53u:
db0906f663ca6638f42cbb9fa996ac30754a38d2870bdb7d474b7746ff45d7eb openwrt-916189392e7b-ramips-mt7621-asus_rt-ax53u-squashfs-factory.bin .

Installed it over stock 3.0.0.4.386.67508 via TFTP powering device on while holding reset button (installation via TFTP using UBOOT menu was unsuccessful after many retries for some reason).
Also tried installation via SSH:
mtd-write -i /tmp/openwrt-ramips-mt7621-asus_rt-ax53u-squashfs-factory.bin -d linux
The result is the same:

[    3.394008] UBI error: no valid UBI magic found inside mtd5
[    3.400480] /dev/root: Can't open blockdev
[    3.404571] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    3.412071] Please append a correct "root=" boot option; here are the available partitions:
[    3.420417] 1f00             896 mtdblock0 
[    3.420424]  (driver?)
[    3.426948] 1f01            1024 mtdblock1 
[    3.426953]  (driver?)
[    3.433457] 1f02            1024 mtdblock2 
[    3.433462]  (driver?)
[    3.439987] 1f03            1024 mtdblock3 
[    3.439992]  (driver?)
[    3.446494] 1f04            4096 mtdblock4 
[    3.446498]  (driver?)
[    3.453019] 1f05           47104 mtdblock5 
[    3.453024]  (driver?)
[    3.459543] 1f06           51200 mtdblock6 
[    3.459548]  (driver?)
[    3.466050] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    3.474303] Rebooting in 1 seconds..

Did I something wrong or the last snapshot is broken?

More details:

github.com/openwrt/openwrt

Asus RT-AX53U bootloop: /dev/root: Can't open blockdev

opened 12:44AM - 09 Aug 22 UTC

nemoforum

Tried with last snapshot: openwrt-ramips-mt7621-asus_rt-ax53u-squashfs-factory.…bin e6cab292c8bbefc448b55a2125665b6658c23ba7fbb55d8c9a7a4915172b76bc | 8960.0 KB | Mon Aug 8 20:23:58 2022 as well as with build from https://firmware-selector.openwrt.org/?version=SNAPSHOT&target=ramips%2Fmt7621&id=asus_rt-ax53u: db0906f663ca6638f42cbb9fa996ac30754a38d2870bdb7d474b7746ff45d7eb openwrt-916189392e7b-ramips-mt7621-asus_rt-ax53u-squashfs-factory.bin . Installed it over stock 3.0.0.4.386.67508 via TFTP powering device on while holding reset button (installation via TFTP using UBOOT menu was unsuccessful after meny retries for some reason). Also tried installation via SSH: `mtd-write -i /tmp/openwrt-ramips-mt7621-asus_rt-ax53u-squashfs-factory.bin -d linux` The result is the same. boot log: ``` =================================================================== MT7621 stage1 code Dec 16 2019 17:45:55 (ASIC) CPU=500000000 HZ BUS=166666666 HZ ================================================================== Change MPLL source from XTAL to CR... do MEMPLL setting.. MEMPLL Config : 0x11000000 3PLL mode + External loopback === XTAL-40Mhz === DDR-1200Mhz === PLL3 FB_DL: 0x5, 1/0 = 523/501 15000000 PLL4 FB_DL: 0xa, 1/0 = 596/428 29000000 PLL2 FB_DL: 0x16, 1/0 = 599/425 59000000 DDR patch working do DDR setting..[01F40000] Apply DDR3 Setting...(use default AC) 0 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120 -------------------------------------------------------------------------------- 0000:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0001:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0002:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0003:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0004:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0005:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0006:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0007:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0008:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0009:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000A:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000B:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000C:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000D:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 000E:| 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 000F:| 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0010:| 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0011:| 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0012:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0013:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0014:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0015:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0016:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0017:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0018:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0019:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001A:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001B:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001C:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001D:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001E:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 001F:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DRAMC_DQSCTL1[0e0]=14000000 DRAMC_DQSGCTL[124]=80000000 rank 0 coarse = 16 rank 0 fine = 48 B:| 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 opt_dle value:9 DRAMC_DDR2CTL[07c]=C287221D DRAMC_PADCTL4[0e4]=000022B3 DRAMC_DQIDLY1[210]=0B0C0B0A DRAMC_DQIDLY2[214]=0809080A DRAMC_DQIDLY3[218]=0A080706 DRAMC_DQIDLY4[21c]=09070A08 DRAMC_R0DELDLY[018]=00001D1F ================================================================== RX DQS perbit delay software calibration ================================================================== 1.0-15 bit dq delay value ================================================================== bit| 0 1 2 3 4 5 6 7 8 9 -------------------------------------- 0 | 9 8 10 11 8 7 7 6 6 7 10 | 8 9 7 10 7 8 -------------------------------------- ================================================================== 2.dqs window x=pass dqs delay value (min~max)center y=0-7bit DQ of every group input delay:DQS0 =31 DQS1 = 29 ================================================================== bit DQS0 bit DQS1 0 (1~59)30 8 (1~58)29 1 (1~56)28 9 (1~58)29 2 (2~56)29 10 (1~58)29 3 (2~60)31 11 (1~56)28 4 (2~56)29 12 (1~56)28 5 (1~60)30 13 (1~57)29 6 (1~58)29 14 (1~58)29 7 (1~58)29 15 (1~56)28 ================================================================== 3.dq delay value last ================================================================== bit| 0 1 2 3 4 5 6 7 8 9 -------------------------------------- 0 | 10 11 12 11 10 8 9 8 6 7 10 | 8 10 8 10 7 9 ================================================================== ================================================================== TX perbyte calibration ================================================================== DQS loop = 15, cmp_err_1 = ffff0000 dqs_perbyte_dly.last_dqsdly_pass[0]=15, finish count=1 dqs_perbyte_dly.last_dqsdly_pass[1]=15, finish count=2 DQ loop=15, cmp_err_1 = ffff0000 dqs_perbyte_dly.last_dqdly_pass[0]=15, finish count=1 dqs_perbyte_dly.last_dqdly_pass[1]=15, finish count=2 byte:0, (DQS,DQ)=(8,8) byte:1, (DQS,DQ)=(8,8) DRAMC_DQODLY1[200]=88888888 DRAMC_DQODLY2[204]=88888888 20,data:88 [EMI] DRAMC calibration passed =================================================================== MT7621 stage1 code done CPU=500000000 HZ BUS=166666666 HZ =================================================================== U-Boot SPL 2018.09 (Feb 24 2021 - 10:45:40 +0800) Trying to boot from NAND Initializing NMBM ... Signature found at block 1023 [0x07fe0000] First info table with writecount 0 found in block 960 Second info table with writecount 0 found in block 963 NMBM has been successfully attached U-Boot 2018.09 (Feb 24 2021 - 10:45:40 +0800) RT-AX53U bootloader version: 1.0.0.0 CPU: MediaTek MT7621AT ver 1, eco 3 Clocks: CPU: 880MHz, DDR: 600MHz (1200MT/s), Bus: 220MHz, XTAL: 40MHz Model: MediaTek MT7621 reference board (NAND) DRAM: 256 MiB NAND: 128 MiB Initializing NMBM ... Signature found at block 1023 [0x07fe0000] First info table with writecount 0 found in block 960 Second info table with writecount 0 found in block 963 NMBM has been successfully attached Loading Environment from NMBM... *** Warning - bad CRC, using default environment In: uartlite0@1e000c00 Out: uartlite0@1e000c00 Err: uartlite0@1e000c00 Net: Warning: eth@1e100000 (eth0) using random MAC address - b2:2c:7c:04:74:43 eth0: eth@1e100000 gpio_init ...... Hit any key to stop autoboot: 0 [?25l[2J[1;1H[1;1H[2K[2;1H *** U-Boot Boot Menu ***[0K[3;1H[2K[11;1H[2K[12;1H Press UP/DOWN to move, ENTER to select[0K[13;1H[2K[4;1H [7m1. Startup system (Default)[0m[5;1H 2. Upgrade firmware[6;1H 3. Upgrade bootloader[7;1H 4. Upgrade bootloader (advanced mode)[8;1H 5. Load image[9;1H 0. U-Boot console[11;1H Hit any key to stop autoboot: 3 2 1 0 [11;1H[2K[?25h[2J[1;1HReading from 0x1e0000, size 0x100000 Succeeded RT-AX53U bootloader version: 1.0.0.0 Reading from 0x1e0000, size 0x100000 Succeeded MAC Address: FC:34:97:0C:4B:D0 Reading from 0x1e0000, size 0x40000 Succeeded Check Factory's EEPROM successfully! (r = 16) Reading from 0x2e0000, size 0x40000 Succeeded Check Factory2's EEPROM successfully! (r = 16) Reading from 0x3e0000, size 0x2000 Succeeded Reading from 0x3e0000, size 0x2bead3 Succeeded Image Name: MIPS OpenWrt Linux-5.10.135 Image Type: MIPS Linux Kernel Image (lzma compressed) Data Size: 2878099 Bytes = 2.7 MiB Load Address: 80001000 Entry Point: 80001000 Verifying Checksum ... OK ## Booting kernel from Legacy Image at 83000000 ... Image Name: MIPS OpenWrt Linux-5.10.135 Image Type: MIPS Linux Kernel Image (lzma compressed) Data Size: 2878099 Bytes = 2.7 MiB Load Address: 80001000 Entry Point: 80001000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK [ 0.000000] Linux version 5.10.135 (builder@buildhost) (mipsel-openwrt-linux-musl-gcc (OpenWrt GCC 11.3.0 r20260-1bfe42beb4) 11.3.0, GNU ld (GNU Binutils) 2.37) #0 SMP Mon Aug 8 13:37:34 2022 [ 0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3 [ 0.000000] printk: bootconsole [early0] enabled [ 0.000000] CPU0 revision is: 0001992f (MIPS 1004Kc) [ 0.000000] MIPS: machine is ASUS RT-AX53U [ 0.000000] Initrd not found or empty - disabling initrd [ 0.000000] VPE topology {2,2} total 4 [ 0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. [ 0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes [ 0.000000] MIPS secondary cache 256kB, 8-way, linesize 32 bytes. [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000000000000-0x000000000fffffff] [ 0.000000] HighMem empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000000000-0x000000000fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000000fffffff] [ 0.000000] percpu: Embedded 15 pages/cpu s30448 r8192 d22800 u61440 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 64960 [ 0.000000] Kernel command line: console=ttyS0,115200 [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes, linear) [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes, linear) [ 0.000000] Writing ErrCtl register=00020c41 [ 0.000000] Readback ErrCtl register=00020c41 [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Memory: 248724K/262144K available (7041K kernel code, 628K rwdata, 1416K rodata, 1268K init, 243K bss, 13420K reserved, 0K cma-reserved, 0K highmem) [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] Tracing variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 0.000000] NR_IRQS: 256 [ 0.000000] CPU Clock: 880MHz [ 0.000000] clocksource: GIC: mask: 0xffffffffffffffff max_cycles: 0xcaf478abb4, max_idle_ns: 440795247997 ns [ 0.000012] sched_clock: 64 bits at 880MHz, resolution 1ns, wraps every 4398046511103ns [ 0.007942] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 4343773742 ns [ 0.016994] Calibrating delay loop... 586.13 BogoMIPS (lpj=2930688) [ 0.083161] pid_max: default: 32768 minimum: 301 [ 0.087923] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) [ 0.095126] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) [ 0.105730] rcu: Hierarchical SRCU implementation. [ 0.110772] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build [ 0.118876] smp: Bringing up secondary CPUs ... [ 0.124160] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. [ 0.124170] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes [ 0.124182] MIPS secondary cache 256kB, 8-way, linesize 32 bytes. [ 0.124258] CPU1 revision is: 0001992f (MIPS 1004Kc) [ 0.178676] Synchronize counters for CPU 1: done. [ 0.211111] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. [ 0.211121] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes [ 0.211130] MIPS secondary cache 256kB, 8-way, linesize 32 bytes. [ 0.211177] CPU2 revision is: 0001992f (MIPS 1004Kc) [ 0.270083] Synchronize counters for CPU 2: done. [ 0.300679] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. [ 0.300688] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes [ 0.300697] MIPS secondary cache 256kB, 8-way, linesize 32 bytes. [ 0.300745] CPU3 revision is: 0001992f (MIPS 1004Kc) [ 0.355275] Synchronize counters for CPU 3: done. [ 0.385145] smp: Brought up 1 node, 4 CPUs [ 0.393260] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.403084] futex hash table entries: 1024 (order: 3, 32768 bytes, linear) [ 0.410100] pinctrl core: initialized pinctrl subsystem [ 0.417771] NET: Registered protocol family 16 [ 0.423342] thermal_sys: Registered thermal governor 'step_wise' [ 0.424858] cpuidle: using governor teo [ 0.476768] clocksource: Switched to clocksource GIC [ 0.483688] NET: Registered protocol family 2 [ 0.488410] IP idents hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.496669] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear) [ 0.505094] TCP established hash table entries: 2048 (order: 1, 8192 bytes, linear) [ 0.512708] TCP bind hash table entries: 2048 (order: 2, 16384 bytes, linear) [ 0.519793] TCP: Hash tables configured (established 2048 bind 2048) [ 0.526211] UDP hash table entries: 256 (order: 1, 8192 bytes, linear) [ 0.532694] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear) [ 0.539904] NET: Registered protocol family 1 [ 0.544198] PCI: CLS 0 bytes, default 32 [ 0.550659] workingset: timestamp_bits=14 max_order=16 bucket_order=2 [ 0.561575] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.567392] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc. [ 0.578022] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251) [ 0.587241] mt7621_gpio 1e000600.gpio: registering 32 gpios [ 0.593088] mt7621_gpio 1e000600.gpio: registering 32 gpios [ 0.598970] mt7621_gpio 1e000600.gpio: registering 32 gpios [ 0.605405] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled [ 0.615755] printk: console [ttyS0] disabled [ 0.620092] 1e000c00.uartlite: ttyS0 at MMIO 0x1e000c00 (irq = 19, base_baud = 3125000) is a 16550A [ 0.629104] printk: console [ttyS0] enabled [ 0.629104] printk: console [ttyS0] enabled [ 0.637365] printk: bootconsole [early0] disabled [ 0.637365] printk: bootconsole [early0] disabled [ 0.649852] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xf1 [ 0.656199] nand: AMD/Spansion S34ML01G2 [ 0.660177] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 [ 0.667742] mt7621-nand 1e003000.nand: ECC strength adjusted to 4 bits [ 0.674352] 7 fixed-partitions partitions found on MTD device mt7621-nand [ 0.681926] Creating 7 MTD partitions on "mt7621-nand": [ 0.687180] 0x000000000000-0x0000000e0000 : "u-boot" [ 0.706636] 0x0000000e0000-0x0000001e0000 : "u-boot-env" [ 0.728397] 0x0000001e0000-0x0000002e0000 : "factory" [ 0.749867] 0x0000002e0000-0x0000003e0000 : "factory2" [ 0.771344] 0x0000003e0000-0x0000007e0000 : "kernel" [ 0.838678] 0x0000007e0000-0x0000035e0000 : "ubi" [ 1.549586] 0x0000035e0000-0x0000067e0000 : "firmware2" [ 2.367936] mt7530 mdio-bus:1f: MT7530 adapts as multi-chip module [ 2.378162] mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 21 [ 2.388067] i2c /dev entries driver [ 2.394020] mt7621-pci 1e140000.pcie: host bridge /pcie@1e140000 ranges: [ 2.400768] mt7621-pci 1e140000.pcie: No bus range found for /pcie@1e140000, using [bus 00-ff] [ 2.409573] mt7621-pci 1e140000.pcie: MEM 0x0060000000..0x006fffffff -> 0x0000000000 [ 2.417747] mt7621-pci 1e140000.pcie: IO 0x001e160000..0x001e16ffff -> 0x0000000000 [ 2.425977] mt7621-pci 1e140000.pcie: Parsing DT failed [ 2.433674] NET: Registered protocol family 10 [ 2.439846] Segment Routing with IPv6 [ 2.443615] NET: Registered protocol family 17 [ 2.448232] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 2.461516] 8021q: 802.1Q VLAN Support v1.8 [ 2.469310] mt7530 mdio-bus:1f: MT7530 adapts as multi-chip module [ 2.500560] mt7530 mdio-bus:1f wan (uninitialized): PHY [mt7530-0:00] driver [MediaTek MT7530 PHY] (irq=26) [ 2.512757] mt7530 mdio-bus:1f lan1 (uninitialized): PHY [mt7530-0:01] driver [MediaTek MT7530 PHY] (irq=27) [ 2.524983] mt7530 mdio-bus:1f lan2 (uninitialized): PHY [mt7530-0:02] driver [MediaTek MT7530 PHY] (irq=28) [ 2.537360] mt7530 mdio-bus:1f lan3 (uninitialized): PHY [mt7530-0:03] driver [MediaTek MT7530 PHY] (irq=29) [ 2.549569] mt7530 mdio-bus:1f lan4 (uninitialized): PHY [mt7530-0:04] driver [MediaTek MT7530 PHY] (irq=30) [ 2.562125] mt7530 mdio-bus:1f: configuring for fixed/rgmii link mode [ 2.572561] DSA: tree 0 setup [ 2.575831] rt2880-pinmux pinctrl: pcie is already enabled [ 2.581431] mt7621-pci 1e140000.pcie: host bridge /pcie@1e140000 ranges: [ 2.588143] mt7621-pci 1e140000.pcie: No bus range found for /pcie@1e140000, using [bus 00-ff] [ 2.596948] mt7621-pci 1e140000.pcie: MEM 0x0060000000..0x006fffffff -> 0x0000000000 [ 2.605099] mt7621-pci 1e140000.pcie: IO 0x001e160000..0x001e16ffff -> 0x0000000000 [ 2.613355] mt7621-pci-phy 1e149000.pcie-phy: PHY for 0xbe149000 (dual port = 1) [ 2.621084] mt7621-pci-phy 1e14a000.pcie-phy: PHY for 0xbe14a000 (dual port = 0) [ 2.628747] mt7621-pci 1e140000.pcie: failed to parse bus ranges property: -22 [ 2.736146] mt7621-pci-phy 1e149000.pcie-phy: Xtal is 40MHz [ 2.741735] mt7621-pci-phy 1e14a000.pcie-phy: Xtal is 40MHz [ 2.847459] mt7621-pci 1e140000.pcie: pcie2 no card, disable it (RST & CLK) [ 2.854396] mt7621-pci 1e140000.pcie: PCIE0 enabled [ 2.859264] mt7621-pci 1e140000.pcie: PCIE1 enabled [ 2.864125] mt7621-pci 1e140000.pcie: PCI coherence region base: 0x60000000, mask/settings: 0xf0000002 [ 2.873579] mt7621-pci 1e140000.pcie: PCI host bridge to bus 0000:00 [ 2.879946] pci_bus 0000:00: root bus resource [io 0x1e160000-0x1e16ffff] [ 2.886815] pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff] [ 2.893662] pci_bus 0000:00: root bus resource [bus 00-ff] [ 2.899152] pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff] (bus address [0x00000000-0x0fffffff]) [ 2.909348] pci 0000:00:00.0: [0e8d:0801] type 01 class 0x060400 [ 2.915345] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff] [ 2.921602] pci 0000:00:00.0: reg 0x14: initial BAR value 0x00000000 invalid [ 2.928658] pci 0000:00:00.0: reg 0x14: [mem size 0x00010000] [ 2.934448] pci 0000:00:00.0: supports D1 [ 2.938453] pci 0000:00:00.0: PME# supported from D0 D1 D3hot [ 2.944597] pci 0000:00:01.0: [0e8d:0801] type 01 class 0x060400 [ 2.950647] pci 0000:00:01.0: reg 0x10: [mem 0x00000000-0x7fffffff] [ 2.956919] pci 0000:00:01.0: reg 0x14: initial BAR value 0x00000000 invalid [ 2.963935] pci 0000:00:01.0: reg 0x14: [mem size 0x00010000] [ 2.969735] pci 0000:00:01.0: supports D1 [ 2.973727] pci 0000:00:01.0: PME# supported from D0 D1 D3hot [ 2.980731] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 2.988752] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 2.996989] pci 0000:01:00.0: [14c3:7916] type 00 class 0x000280 [ 3.003017] pci 0000:01:00.0: reg 0x10: initial BAR value 0x00000000 invalid [ 3.010070] pci 0000:01:00.0: reg 0x10: [mem size 0x00100000 64bit pref] [ 3.016780] pci 0000:01:00.0: reg 0x18: initial BAR value 0x00000000 invalid [ 3.023797] pci 0000:01:00.0: reg 0x18: [mem size 0x00004000 64bit pref] [ 3.030504] pci 0000:01:00.0: reg 0x20: initial BAR value 0x00000000 invalid [ 3.037548] pci 0000:01:00.0: reg 0x20: [mem size 0x00001000 64bit pref] [ 3.044340] pci 0000:01:00.0: supports D1 D2 [ 3.048613] pci 0000:01:00.0: PME# supported from D0 D1 D2 D3hot D3cold [ 3.055241] pci 0000:01:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x1 link at 0000:00:00.0 (capable of 4.000 Gb/s with 5.0 GT/s PCIe x1 link) [ 3.071250] pci 0000:00:00.0: PCI bridge to [bus 01-ff] [ 3.076474] pci 0000:00:00.0: bridge window [io 0x0000-0x0fff] [ 3.082569] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff] [ 3.089347] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff pref] [ 3.096544] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01 [ 3.103401] pci 0000:02:00.0: [14c3:7915] type 00 class 0x000280 [ 3.109461] pci 0000:02:00.0: reg 0x10: initial BAR value 0x00000000 invalid [ 3.116487] pci 0000:02:00.0: reg 0x10: [mem size 0x00100000 64bit pref] [ 3.123187] pci 0000:02:00.0: reg 0x18: initial BAR value 0x00000000 invalid [ 3.130220] pci 0000:02:00.0: reg 0x18: [mem size 0x00004000 64bit pref] [ 3.136921] pci 0000:02:00.0: reg 0x20: initial BAR value 0x00000000 invalid [ 3.143939] pci 0000:02:00.0: reg 0x20: [mem size 0x00001000 64bit pref] [ 3.150753] pci 0000:02:00.0: supports D1 D2 [ 3.155006] pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot D3cold [ 3.161645] pci 0000:02:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe x1 link at 0000:00:01.0 (capable of 4.000 Gb/s with 5.0 GT/s PCIe x1 link) [ 3.177731] pci 0000:00:01.0: PCI bridge to [bus 02-ff] [ 3.182955] pci 0000:00:01.0: bridge window [io 0x0000-0x0fff] [ 3.189041] pci 0000:00:01.0: bridge window [mem 0x60000000-0x600fffff] [ 3.195801] pci 0000:00:01.0: bridge window [mem 0x60000000-0x600fffff pref] [ 3.203015] pci_bus 0000:02: busn_res: [bus 02-ff] end is updated to 02 [ 3.209683] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000] [ 3.216269] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000] [ 3.223217] pci 0000:00:01.0: BAR 0: no space for [mem size 0x80000000] [ 3.229824] pci 0000:00:01.0: BAR 0: failed to assign [mem size 0x80000000] [ 3.236776] pci 0000:00:00.0: BAR 8: assigned [mem 0x60000000-0x600fffff] [ 3.243536] pci 0000:00:00.0: BAR 9: assigned [mem 0x60100000-0x602fffff pref] [ 3.250743] pci 0000:00:01.0: BAR 8: assigned [mem 0x60300000-0x603fffff] [ 3.257530] pci 0000:00:01.0: BAR 9: assigned [mem 0x60400000-0x605fffff pref] [ 3.264721] pci 0000:00:00.0: BAR 1: assigned [mem 0x60600000-0x6060ffff] [ 3.271503] pci 0000:00:01.0: BAR 1: assigned [mem 0x60610000-0x6061ffff] [ 3.278284] pci 0000:00:00.0: BAR 7: assigned [io 0x1e160000-0x1e160fff] [ 3.285042] pci 0000:00:01.0: BAR 7: assigned [io 0x1e161000-0x1e161fff] [ 3.291837] pci 0000:01:00.0: BAR 0: assigned [mem 0x60100000-0x601fffff 64bit pref] [ 3.299578] pci 0000:01:00.0: BAR 2: assigned [mem 0x60200000-0x60203fff 64bit pref] [ 3.307319] pci 0000:01:00.0: BAR 4: assigned [mem 0x60204000-0x60204fff 64bit pref] [ 3.315040] pci 0000:00:00.0: PCI bridge to [bus 01] [ 3.320001] pci 0000:00:00.0: bridge window [io 0x1e160000-0x1e160fff] [ 3.326779] pci 0000:00:00.0: bridge window [mem 0x60000000-0x600fffff] [ 3.333537] pci 0000:00:00.0: bridge window [mem 0x60100000-0x602fffff pref] [ 3.340751] pci 0000:02:00.0: BAR 0: assigned [mem 0x60400000-0x604fffff 64bit pref] [ 3.348498] pci 0000:02:00.0: BAR 2: assigned [mem 0x60500000-0x60503fff 64bit pref] [ 3.356219] pci 0000:02:00.0: BAR 4: assigned [mem 0x60504000-0x60504fff 64bit pref] [ 3.363952] pci 0000:00:01.0: PCI bridge to [bus 02] [ 3.368918] pci 0000:00:01.0: bridge window [io 0x1e161000-0x1e161fff] [ 3.375677] pci 0000:00:01.0: bridge window [mem 0x60300000-0x603fffff] [ 3.382449] pci 0000:00:01.0: bridge window [mem 0x60400000-0x605fffff pref] [ 3.394008] UBI error: no valid UBI magic found inside mtd5 [ 3.400480] /dev/root: Can't open blockdev [ 3.404571] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 [ 3.412071] Please append a correct "root=" boot option; here are the available partitions: [ 3.420417] 1f00 896 mtdblock0 [ 3.420424] (driver?) [ 3.426948] 1f01 1024 mtdblock1 [ 3.426953] (driver?) [ 3.433457] 1f02 1024 mtdblock2 [ 3.433462] (driver?) [ 3.439987] 1f03 1024 mtdblock3 [ 3.439992] (driver?) [ 3.446494] 1f04 4096 mtdblock4 [ 3.446498] (driver?) [ 3.453019] 1f05 47104 mtdblock5 [ 3.453024] (driver?) [ 3.459543] 1f06 51200 mtdblock6 [ 3.459548] (driver?) [ 3.466050] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 3.474303] Rebooting in 1 seconds.. ```

darca · 2022-08-09T09:39:48.658Z

Hi,
i've installed openwrt last night, probably using the same snapshot you did, but found no issues.
The method used was to connect a usb-to-serial adapter ( https://www.az-delivery.de/it/products/ftdi-adapter-ft232rl ) with TFTP method, interrupting u-boot and then flashing the firmware from TFTP server. The whole process was done through picocom shell

I see you are using "mtd" command, but personally I didn't need to use it.
The wiki page has been updated with detailed instructions on how to flash from factory firmware, did you try that?

OpenWrt Wiki – 21 Jul 22

ASUS RT-AX53U

ASUS RT-AX53U Under Construction! This page is currently under construction. You can edit the article to help completing it. The RT-AX53U is a dual-band 802.11ax WiFi 6 router, supporting ramips/mt7621 platform, featuring three Gbit Ethernet...

darca · 2022-08-09T09:41:31.189Z

a how-to on this would be very nice! I believe many people are scared of opening the case and don't have required tools to solder or even don't know how to use the serial adapter.

if you can share some commands on how to flash from stock through ssh we can think of a way to make it more pretty and document it on the wiki aswell

nemoforum · 2022-08-09T10:17:00.206Z

darca:

The wiki page has been updated with detailed instructions on how to flash from factory firmware, did you try that?

Yes, I tried that.
My problem with the described instructions is that after selecting all the options ( 2. Upgrade firmware; 0 - TFTP client (Default); Input U-Boot's IP address: 192.168.1.1; and so on) TFTP was unable to download the firmware, it gave up after N tries.
I was trying to use curl and atftp as described here https://openwrt.org/docs/guide-user/installation/generic.flashing.tftp#linuxbsd (I'm on Linux).
What tftp server have you used? What was the stock FW version? Could you please share sha265 of the file you flashed?
I've checked the firewall, tried to disable NetworkManager, tried to disable all other network interfaces, tried to add arp record..

darca · 2022-08-09T10:36:39.201Z

I've used atftpd:

SourceForge

atftp

Download atftp for free. advanced tftp server and client. atftp is a client/server implementation of the TFTP protocol that implements RFCs 1350, 2090, 2347, 2348, 2349 and 7440. The server is multi-threaded and the client presents a friendly...

on archlinux (manjaro)
you could try with a live linux distro to set up the tftp server
The IP of the tftp server should be set according to the ethernet link, personally i've had to manually set the network interface not to use the DHCP but with 192.168.1.2 and 255.255.255.0

If you are unable to reach the tftp server from the router itself the main reasons should be

network connectivity (required to set IP and netmask manually)
firewall / something else in your network blocking the connection (try a live linux distro)

Regarding the hashes of the files i'll give you an update later on when I'm home
The stock firmware version i flashed from was the latest one downloadable from asus support website: https://dlcdnets.asus.com/pub/ASUS/wireless/RT-AX53U/FW_RT_AX53U_300438667508.zip

nemoforum · 2022-08-09T13:21:22.423Z

Finally, it works. It's always not a good idea to perform such things at 3AM LOL.
My problem was, that I've mixed up TFTP server & TFTP client.
Uboot's option "2. Upgrade firmware; 0 - TFTP client (Default)" is client, and powering on while holding reset button is server.
I've tried client (on a laptop), but have to - server.

And, it seems, loading Openwrt in rescue mode is not working yet.

DrSamJames · 2022-08-09T15:21:37.219Z

Hi again

I decided to join in the fun, so I went ahead and ordered one.

So far I've managed to flash the current snapshot onto the device by TFTP. it seemed to have worked as I can now SSH in and it is clearly running OpenWrt, but I don't have a LuCI interface running. Also I've lost the serial console, when it boots I just get garbage on minicom? Is that normal?

Sam

DrSamJames · 2022-08-09T15:35:34.520Z

Hi

I did another flash with a sysupgrade and I've got my serial console back.

nemoforum · 2022-08-09T21:28:06.211Z

DrSamJames:

but I don't have a LuCI interface running

opkg update
opkg install luci luci-ssl kmod-mtd-rw

darca · 2022-08-10T13:30:10.059Z

nemoforum:

kmod-mtd-rw

what is this package for?

neil1 · 2022-08-10T16:04:49.663Z

Its cpu and wifi chips better than mi ax1800? I want to buy one because of openwrt support.

nemoforum · 2022-08-10T17:18:16.117Z

Hmm, it's a copy-paste from New Xiaomi router AC2100 - #839 by WiredLife . I thought was needed for Luci to be able to change some settings. Need to re-check.

nemoforum · 2022-08-10T17:30:04.506Z

BTW, despite opening a case being quite simple (and it's possible to keep a seal intact), there is no need to perform that to access the serial. It's accessible through slits in the case.
Soldering is not mandatory, as potential serial disconnection is not destructive.

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neil1 · 2022-08-10T19:18:37.967Z

This router is available in my local market. Should I go for it? It will be fully supported by openwrt in the future? I already have mi ax1800 router. It is better than mi ax 1800? Please provide suggestions for what I should do?
Thank you,

darca · 2022-08-10T19:21:04.106Z

neil1:

fully supported by openwrt in the future

it's already supported, it's just not in "stable" release cycle yet, you just need to use snapshot builds
they're ok for general use