Ecb350 bricked, tftp only partially working

Installing and Using OpenWrt
1

Hi all!
I managed to brick my beloved Engenius ecb350 by flashing the factory image in Luci instead of the sysupgrade.
With serial connection I can still see it booting, but it doesn't detect keypresses so I cannot halt the booting process. It does react on a press of the reset button which makes it boot it's tftp-client. That one doesn't succeed to load the image though. Unfortunately it doesn't say what is wrong. I flashed the vram image before succesfully through tftp after locking myself out.. so it should work. Tested with 2 tftp servers.

sri
ar7240_ddr_initial_config(133): virian ddr1 init
#### TAP VALUE 1 = 0x2, 2 = 0x2 [0xffffffff: 0xffffffff]
32 MB
Top of RAM usable for U-Boot at: 82000000
Reserving 242k for U-Boot at: 81fc0000
Reserving 192k for malloc() at: 81f90000
Reserving 44 Bytes for Board Info at: 81f8ffd4
Reserving 36 Bytes for Global Data at: 81f8ffb0
Reserving 128k for boot params() at: 81f6ffb0
Stack Pointer at: 81f6ff98
Now running in RAM - U-Boot at: 81fc0000
Flash Manuf Id 0xc2, DeviceId0 0x20, DeviceId1 0x17
flash size 8MB, sector count = 128
Flash:  8 MB
In:    serial
Out:   serial
Err:   serial
Net:   ag7240_enet_initialize...
Fetching MAC Address from 0x81fea6f4
Virian MDC CFG Value ==> 6
: cfg1 0xf cfg2 0x7214
eth0: 00:02:6f:ee:ff:89
RGMII reg init
ATHRSF1_PHY: Port 0, Neg Success
ATHRSF1_PHY: unit 0 phy addr 4 eth0 up
eth0
eth_set_enetaddr(num=0, addr=00:02:6f:ee:ff:89)
Setting new HW address on eth0
New Address is             00:02:6F:EE:FF:89
eth_set_enetaddr(num=0, addr=00:02:6f:ee:ff:89)
Setting new HW address on eth0
New Address is             00:02:6F:EE:FF:89
Hit any key to stop autoboot:  0
Trying eth0
dup 1 speed 1000
Using eth0 device
TFTP from server 192.168.1.101; our IP address is 192.168.1.1
Filename 'vmlinux-art-ramdisk'.
Load address: 0x3000000
Loading: *
Retry count exceeded; starting again
Retry...
Trying eth0
Using eth0 device
TFTP from server 192.168.1.101; our IP address is 192.168.1.1
Filename 'vmlinux-art-ramdisk'.
Load address: 0x3000000
Loading: *
Retry count exceeded; starting again
Retry...
Trying eth0
Using eth0 device
TFTP from server 192.168.1.101; our IP address is 192.168.1.1
Filename 'vmlinux-art-ramdisk'.
Load address: 0x3000000
Loading: *
2

It's now loading through tftp thanks to disabling all windows firewalls. However:

Out of memory and no killable processes...
[    0.913280] Kernel panic - not syncing: System is deadlocked on memory
3

Just to make sure:

You are attempting to tftp the initramfs build? (after renaming to 'vmlinux-art-ramdisk')?

4

That's right! I tried bot the 21.02 rc and the snapshot initramfs. This is the serial log:

U-Boot 1.1.4 (Jul 13 2012 - 20:54:36)

ECB350 (ar7241 - Virian) U-boot
DRAM:
sri
ar7240_ddr_initial_config(133): virian ddr1 init
#### TAP VALUE 1 = 0x2, 2 = 0x2 [0x0: 0x80500004]
32 MB
Top of RAM usable for U-Boot at: 82000000
Reserving 242k for U-Boot at: 81fc0000
Reserving 192k for malloc() at: 81f90000
Reserving 44 Bytes for Board Info at: 81f8ffd4
Reserving 36 Bytes for Global Data at: 81f8ffb0
Reserving 128k for boot params() at: 81f6ffb0
Stack Pointer at: 81f6ff98
Now running in RAM - U-Boot at: 81fc0000
Flash Manuf Id 0xc2, DeviceId0 0x20, DeviceId1 0x17
flash size 8MB, sector count = 128
Flash:  8 MB
In:    serial
Out:   serial
Err:   serial
Net:   ag7240_enet_initialize...
Fetching MAC Address from 0x81fea6f4
Virian MDC CFG Value ==> 6
: cfg1 0xf cfg2 0x7214
eth0: 00:02:6f:ee:ff:89
RGMII reg init
ATHRSF1_PHY: Port 0, Neg Success
ATHRSF1_PHY: unit 0 phy addr 4 eth0 up
eth0
eth_set_enetaddr(num=0, addr=00:02:6f:ee:ff:89)
Setting new HW address on eth0
New Address is             00:02:6F:EE:FF:89
eth_set_enetaddr(num=0, addr=00:02:6f:ee:ff:89)
Setting new HW address on eth0
New Address is             00:02:6F:EE:FF:89
Hit any key to stop autoboot:  0
Trying eth0
dup 1 speed 1000
Using eth0 device
TFTP from server 192.168.1.101; our IP address is 192.168.1.1
Filename 'vmlinux-art-ramdisk'.
Load address: 0x3000000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ###############
done
Bytes transferred = 4402763 (432e4b hex)
## Booting image at 03000000 ...
   Image Name:   MIPS OpenWrt Linux-5.4.111
   Created:      2021-04-18  10:06:57 UTC
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    4402699 Bytes =  4.2 MB
   Load Address: 80060000
   Entry Point:  80060000
   Verifying Checksum at 0x03000040 ...OK
   Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80060000) ...
## Giving linux memsize in bytes, 33554432

Starting kernel ...

[    0.000000] Linux version 5.4.111 (builder@buildhost) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r16046-59980f7aaf)) #0 Sun Apr 18 10:06:57 2021
[    0.000000] printk: bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
[    0.000000] MIPS: machine is EnGenius ECB350 v1
[    0.000000] SoC: Atheros AR7242 rev 1
[    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 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000001ffffff]
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 8128
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 17568K/32768K available (4050K kernel code, 148K rwdata, 600K rodata, 9848K init, 195K bss, 15200K 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] random: get_random_bytes called from 0x80512990 with crng_init=0
[    0.000000] CPU clock: 400.000 MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302233 ns
[    0.000013] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 10737418237ns
[    0.007924] Calibrating delay loop... 265.98 BogoMIPS (lpj=531968)
[    0.050086] pid_max: default: 32768 minimum: 301
[    0.054986] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.062301] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.076133] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.085914] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.092797] pinctrl core: initialized pinctrl subsystem
[    0.101925] NET: Registered protocol family 16
[    0.141017] workqueue: max_active 576 requested for napi_workq is out of range, clamping between 1 and 512
[    0.155615] clocksource: Switched to clocksource MIPS
[    0.162455] NET: Registered protocol family 2
[    0.168347] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
[    0.176777] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.184455] TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.191514] TCP: Hash tables configured (established 1024 bind 1024)
[    0.198093] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.204696] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.212091] NET: Registered protocol family 1
[    0.216535] PCI: CLS 0 bytes, default 32
[    0.476974] swapper invoked oom-killer: gfp_mask=0x100cc2(GFP_HIGHUSER), order=0, oom_score_adj=0
[    0.485922] CPU: 0 PID: 1 Comm: swapper Not tainted 5.4.111 #0
[    0.491745] Stack : 804b99a0 804b9980 804b8fbc 81c299bc 00000000 00000000 00000000 00000000
[    0.500102]         00000000 00000000 00000000 00000000 00000000 00000001 81c29970 9380487f
[    0.508455]         81c29a08 00000000 00000000 00000000 00000038 8044efe4 2e342e31 31312023
[    0.516810]         6d6d3a20 00000040 00000033 73776170 00000000 81c29adc 00000000 804f6e70
[    0.525165]         804f6d10 ffffffff 00200000 00000000 00000001 80061518 00000000 80eb0000
[    0.533520]         ...
[    0.535973] Call Trace:
[    0.536000] [<8044efe4>] 0x8044efe4
[    0.541925] [<80061518>] 0x80061518
[    0.545419] [<80068f98>] 0x80068f98
[    0.548909] [<80068fa0>] 0x80068fa0
[    0.552398] [<800f7d0c>] 0x800f7d0c
[    0.555891] [<80097d24>] 0x80097d24
[    0.559374] [<800f88b8>] 0x800f88b8
[    0.562875] [<80126e5c>] 0x80126e5c
[    0.566386] [<800f5a2c>] 0x800f5a2c
[    0.569882] [<800f5b50>] 0x800f5b50
[    0.573378] [<8015a79c>] 0x8015a79c
[    0.576866] [<8014c7c8>] 0x8014c7c8
[    0.580360] [<800f3a58>] 0x800f3a58
[    0.583866] [<800f53c4>] 0x800f53c4
[    0.587340] [<800ff4f4>] 0x800ff4f4
[    0.590829] [<800f333c>] 0x800f333c
[    0.594321] [<805121b0>] 0x805121b0
[    0.597822] [<800f549c>] 0x800f549c
[    0.601320] [<8014ed70>] 0x8014ed70
[    0.604811] [<8013232c>] 0x8013232c
[    0.608307] [<801d05d8>] 0x801d05d8
[    0.611809] [<80133844>] 0x80133844
[    0.615290] [<80131288>] 0x80131288
[    0.618781] [<80133a08>] 0x80133a08
[    0.622269] [<8012c620>] 0x8012c620
[    0.625760] [<8014ed70>] 0x8014ed70
[    0.629252] [<80514620>] 0x80514620
[    0.632742] [<80513eb8>] 0x80513eb8
[    0.636231] [<80530000>] 0x80530000
[    0.639721] [<80530000>] 0x80530000
[    0.643196] [<80530000>] 0x80530000
[    0.646685] [<80530000>] 0x80530000
[    0.650176] [<80530000>] 0x80530000
[    0.653666] [<80530000>] 0x80530000
[    0.657157] [<80530000>] 0x80530000
[    0.660647] [<80530000>] 0x80530000
[    0.664138] [<80530000>] 0x80530000
[    0.667628] [<80530000>] 0x80530000
[    0.671103] [<80530000>] 0x80530000
[    0.674592] [<80513f5c>] 0x80513f5c
[    0.678084] [<80530000>] 0x80530000
[    0.681574] [<80530000>] 0x80530000
[    0.685065] [<80530000>] 0x80530000
[    0.688556] [<80513880>] 0x80513880
[    0.692045] [<805121b0>] 0x805121b0
[    0.695521] [<8010c480>] 0x8010c480
[    0.699011] [<80530000>] 0x80530000
[    0.702500] [<80513c88>] 0x80513c88
[    0.705990] [<805121b0>] 0x805121b0
[    0.709482] [<800a9550>] 0x800a9550
[    0.712974] [<80530000>] 0x80530000
[    0.716462] [<80530000>] 0x80530000
[    0.719952] [<80530000>] 0x80530000
[    0.723427] [<80450000>] 0x80450000
[    0.726916] [<8051361c>] 0x8051361c
[    0.730408] [<802f111c>] 0x802f111c
[    0.733898] [<805147a8>] 0x805147a8
[    0.737391] [<805121b0>] 0x805121b0
[    0.740880] [<805147cc>] 0x805147cc
[    0.744369] [<8052e02c>] 0x8052e02c
[    0.747861] [<80521d74>] 0x80521d74
[    0.751335] [<805147a8>] 0x805147a8
[    0.754824] [<80060954>] 0x80060954
[    0.758328] [<80512ca0>] 0x80512ca0
[    0.761826] [<805121b0>] 0x805121b0
[    0.765321] [<8044f368>] 0x8044f368
[    0.768815] [<8044f378>] 0x8044f378
[    0.772312] [<8044f368>] 0x8044f368
[    0.775802] [<8044f368>] 0x8044f368
[    0.779276] [<800647f8>] 0x800647f8
[    0.782784]
[    0.784280] Mem-Info:
[    0.786570] active_anon:0 inactive_anon:0 isolated_anon:0
[    0.786570]  active_file:0 inactive_file:0 isolated_file:0
[    0.786570]  unevictable:2745 dirty:0 writeback:0 unstable:0
[    0.786570]  slab_reclaimable:153 slab_unreclaimable:283
[    0.786570]  mapped:0 shmem:0 pagetables:0 bounce:0
[    0.786570]  free:1156 free_pcp:0 free_cma:0
[    0.817390] Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:10980kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[    0.838802] Normal free:4624kB min:4624kB low:4756kB high:4888kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:10980kB writepending:0kB present:32768kB managed:17568kB mlocked:0kB kernel_stack:128kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[    0.865014] lowmem_reserve[]: 0 0
[    0.868339] Normal: 4*4kB (UM) 2*8kB (UM) 1*16kB (M) 1*32kB (M) 3*64kB (UM) 0*128kB 1*256kB (U) 0*512kB 2*1024kB (UM) 1*2048kB (U) 0*4096kB = 4624kB
[    0.881665] 2756 total pagecache pages
[    0.885412] 8192 pages RAM
[    0.888124] 0 pages HighMem/MovableOnly
[    0.891952] 3800 pages reserved
[    0.895073] Tasks state (memory values in pages):
[    0.899773] [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
[    0.908364] Out of memory and no killable processes...
[    0.913497] Kernel panic - not syncing: System is deadlocked on memory
[    0.920000] Rebooting in 1 seconds..
5

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