[LEDE-DEV] boot error on dwr-921 (mt7620n)

[Giuseppe Lippolis]

> Look for the word 0x7620 at an even offset, that's the start of the
EEPROM.
> 
> > Here the complete bootlog:
> > ...
> 
> You are on the right spot, the log confirms that the eeprom partition or
offset
> is certainly wrong.

Daniel, thanks for your help.
Now I'm able to complete the boot.

But I need to find a proper way to generate the factory/sysupgrade image
without changing the bootloader. 
For this I will open a new post.

This is the (partial) bootlog:

Starting kernel @80000000...

[    0.000000] Linux version 4.4.50 (lippo at nice) (gcc version 5.4.0 (LEDE
GCC 5.4.0 r4650+5-5d7e23f) ) #0 Mon Mar 13 19:23:08 2017
[    0.000000] Board has DDR1
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7620N ver:2 eco:6
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019650 (MIPS 24KEc)
[    0.000000] MIPS: machine is D-Link DWR-921

         [ ... ]

[   10.114956] NET: Registered protocol family 24
[   10.142926] rt2800_wmac 10180000.wmac: loaded eeprom from mtd device
"config"
[   10.157203] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5390, rev
0500 detected
[   10.172650] ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 7620
detected
[   10.268205] usbcore: registered new interface driver option
[   10.279484] usbserial: USB Serial support registered for GSM modem
(1-port)

         [ ... ]

[   22.430495] br-lan: port 1(eth0.1) entered forwarding state
[   24.422712] br-lan: port 1(eth0.1) entered forwarding state



BusyBox v1.26.2 () built-in shell (ash)

     _________
    /        /\      _    ___ ___  ___
   /  LE    /  \    | |  | __|   \| __|
  /    DE  /    \   | |__| _|| |) | _|
 /________/  LE  \  |____|___|___/|___|
lede-project.org
 \        \   DE /
  \    LE  \    /
-----------------------------------------------------------
   \  DE    \  /    Reboot (SNAPSHOT, r3584-19eba67)
    \________\/
-----------------------------------------------------------

=== 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 at LEDE:/#