[LEDE-DEV] WRT1900ACS - Kernel 4.4.12 boot failure

[Claudio Leite]

Thanks for the clear output.

* Dheeran Senthilvel (dheeranmech at gmail.com) wrote:
[snip]
> =======> Step 3: Intrupt boot into failsafe <=======
> 
> 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
> f
> - failsafe -
> [    4.986830] random: dropbearkey urandom read with 121 bits of entropy available
[snip]
> root@(none):/# strings /dev/mtd1
> [   44.008437] random: nonblocking pool is initialized

OK, this is definitely not right. It should be a long list of variables.

> =======> Step 4: Reboot <=======

> *** Warning - bad CRC, using default environment

again not right. this should have been cleared up the first time booting
after resetenv erased the old settings:

> 
> S-ENV offset == 0x240000
> 
> 
> #### auto_recovery ####
> [u_env] get auto_recovery == yes
> [u_env] get auto_recovery == yes
> [u_env] get boot_part == 1
> [u_env] get boot_part_ready == 3
> auto_recovery enabled:1, boot_part:1, boot_part_ready:3

This bit looks OK, though.

I'm a little confused because I thought after resetenv and a reset the
bootloader would actually write the default values to flash. This may
not have happened here, since mtd1 is empty. I think it's fairly safe
to say reads from NAND are OK, since otherwise you would get lots of
errors when booting the system.

So, one more test, again trying to clear and reset the u-boot
environment:

(these are all u-boot commands)

resetenv; reset

<interrupt boot>
printenv

if the default values are there, then do

saveenv
reset

and interrupt the boot again and run 'printenv'. Are they there?

-Claudio