[Letux-kernel] U-Boot Watchdog?
marek.belisko at gmail.com
Sat Mar 18 08:44:31 CET 2017
On Sat, Mar 18, 2017 at 8:25 AM, H. Nikolaus Schaller <hns at goldelico.com> wrote:
>> Am 18.03.2017 um 07:28 schrieb Belisko Marek <marek.belisko at gmail.com>:
>> Hi Nikolaus,
>> On Fri, Mar 17, 2017 at 11:27 PM, H. Nikolaus Schaller
>> <hns at goldelico.com> wrote:
>>>> Am 17.03.2017 um 23:09 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>> Have found it :)
>>>> The ca. 9 seconds was the hint...
>>>> The PCB didn't fit exactly in the case and hence the Power button was
>>>> always pressed. This triggers the 8-seconds emergency power-down - after
>>>> enabling it by MLO which differs a little in timing between NAND and MMC
>>>> Ok. We have learned something :)
>>> And I finally have again a completely working GTA04A4 for testing the most recent
>>> hw-test tool. I have two other GTA04A3 where WLAN or Bluetooth is broken...
>>> There is only one remaining issue with our latest U-Boot and Kernel: the NAND
>>> ECC mode does not match between U-Boot and Kernel (OneNAND has no choice for that).
>> Probably ECC options are different between u-boot and kernel (dts)?
> Yes, they disagree.
> The question is how to make them agree...
> AFAIR, MLO must have some specific ECC enabled while the other partitions are a
> little more configurable.
> The main problem seems to be that the kernel does not have ECC specification for
> individual partitions but only for the full chip. This means there is no real
> flexibility if we want to load MLO from NAND.
> Maybe we can look into the BeagleBoard setup?
> @Marek: if you have a little time, could you help to research the settings?
Yes I'll look on that and get back with findings.
>>> Therefore I currently can't read the U-Boot environment (fw_printenv) and flash
>>> kernel/NAND rootfs from the kernel.
> Letux-kernel mailing list
> Letux-kernel at openphoenux.org
as simple and primitive as possible
Marek Belisko - OPEN-NANDRA
Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
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