On Wed, Oct 21, 2015 at 4:58 PM, Robert Nelson <[email protected]> wrote:
> On Wed, Oct 21, 2015 at 4:49 PM, Colin Bester <[email protected]> wrote:
>> I am updating my images ((3.8.13-bone68) and looking to make new images for
>> cloning from SD card to eMMC
>>
>> My process is to setup beaglebone as required and then run
>> /opt/scripts/tools/eMMC/beaglebone-black-make-microSD-flasher-from-eMMC.sh
>> after first changing directory to /opt/scripts/tools and issuing a git pull
>> to get the lastest scripts.
>>
>> Creating SD image works as expected.
>>
>> However when cloning from SD to eMMC (in powered off board, insert SD card,
>> hold boot button and power up board and wait for power down) the destination
>> board is not closing down. I then hooked up serial to usb cable and
>> monitored output. I see the script is getting called and message "eMMC has
>> been flashed: please wait for device to power down" is being displayed.
>> However the device is not shutting down and appears to be restarting.
>>
>> Looking at  init-eMMC-flasher-v3.sh script function copy_rootfs () I see:
>>
>>  message="eMMC has been flashed: please wait for device to power down." ;
>> broadcast
>>  message="-----------------------------" ; broadcast
>>
>>
>>  flush_cache
>>  #To properly shudown, /opt/scripts/boot/am335x_evm.sh is going to call
>> halt:
>>  exec /sbin/init
>>  #halt -f
>>
>> The last line is calling /sbin/init and halt is commented out - is this
>> correct? I'd assume if you wanted to shutdown using init you'd need to
>> calling init 0 and not just init.
>
> Yeah, this is a bug/workaround...
>
> Does? "exec /sbin/init 0" actually shut it down?  For me when i tested
> it late last year summer, it wasn't doing what i wanted..
>
> Right now i catch the "shutdown" here:
>
> https://github.com/RobertCNelson/boot-scripts/blob/master/boot/generic-startup.sh#L3-L10

Part of it, I couldn't get /sbin/init to actually tell the pmic to
shutdown in 3.8.x, so we drop into systemd (/sbin/init) to do it....

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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