init-eMMC-flasher-v3.sh not shutting down

Colin_Bester · October 21, 2015, 9:49pm

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.

Thanks
Colin

RobertCNelson · October 21, 2015, 9:58pm

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

Regards,

RobertCNelson · October 21, 2015, 10:00pm

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,

Colin_Bester · October 21, 2015, 10:07pm

I was just going to add to my post that I found difference in my am335x_evm.sh files. Prior working version included

#eMMC flasher just exited single user mode via: [exec /sbin/init] #as we can't shudown properly in single user mode.. unset are_we_flasher are_we_flasher=$(grep init-eMMC-flasher /proc/cmdline || true) if [ ! "x${are_we_flasher}" = "x" ] ; then halt exit fi

while current am335x_evm.sh doesn’t. I do see the code you mention in generic-startup.sh but don’t see where this file is called/referenced.

RobertCNelson · October 21, 2015, 10:13pm

About a week ago i moved that into the generic (all) startup script
that calls the board options. Mostly to shutdown before ssh key
re-generation on flashing microsd and to share it with the x15
flasher..

(systemd/sysv init script) -> boot/generic-startup.sh -> boot/am335x_evm.sh

the systemd/sysv script i implant into the file system is located here:

https://github.com/RobertCNelson/omap-image-builder/tree/master/target/init_scripts

systemd-generic-board-startup.service

looks like "generic-debian.sh" (sysv) is still calling the old one, i
don't use that..

Regards,

Colin_Bester · October 21, 2015, 10:14pm

I’m in process of reflashing and will let you know on /sbin/init 0 working or not.

Did ‘shutdown -h now’ not work when you tried, any reason not to call this directly in the init-eMMC script?

Looking forward to getting this version buttoned up so that I can move to later version…

RobertCNelson · October 21, 2015, 10:19pm

I'm in process of reflashing and will let you know on /sbin/init 0 working
or not.

Did 'shutdown -h now' not work when you tried, any reason not to call this
directly in the init-eMMC script?

i think it just brought down the kernel... don't remember 100% anymore..

Looking forward to getting this version buttoned up so that I can move to
later version....

btw... there is a back door in the init script:

touch /boot/debug.txt

github.com

RobertCNelson/boot-scripts/blob/master/tools/eMMC/init-eMMC-flasher-v3.sh#L428


      
          #!/bin/bash -e
          #
          # Copyright (c) 2013-2016 Robert Nelson <robertcnelson@gmail.com>
          # Portions copyright (c) 2014 Charles Steinkuehler <charles@steinkuehler.net>
          #
          # Permission is hereby granted, free of charge, to any person obtaining a copy
          # of this software and associated documentation files (the "Software"), to deal
          # in the Software without restriction, including without limitation the rights
          # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
          # copies of the Software, and to permit persons to whom the Software is
          # furnished to do so, subject to the following conditions:
          #
          # The above copyright notice and this permission notice shall be included in
          # all copies or substantial portions of the Software.
          #
          # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
          # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
          # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
          # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
          # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
          # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
          # THE SOFTWARE.
          
          #This script assumes, these packages are installed, as network may not be setup
          #dosfstools initramfs-tools rsync u-boot-tools
          
          source $(dirname "$0")/functions.sh
          
          #mke2fs -c
          #Check the device for bad blocks before creating the file system.
          #If this option is specified twice, then a slower read-write test is
          #used instead of a fast read-only test.
          
          mkfs_options=""
          #mkfs_options="-c"
          #mkfs_options="-cc"
          
          device_eeprom="bbb-eeprom"
          
          check_if_run_as_root
          
          startup_message
          prepare_environment
          
          countdown 5
          check_eeprom
          check_running_system
          activate_cylon_leds
          prepare_drive

beagleboard.org

github.com

RobertCNelson/boot-scripts/blob/master/tools/eMMC/init-eMMC-flasher-v3.sh#L74


      
          #!/bin/bash -e
          #
          # Copyright (c) 2013-2016 Robert Nelson <robertcnelson@gmail.com>
          # Portions copyright (c) 2014 Charles Steinkuehler <charles@steinkuehler.net>
          #
          # Permission is hereby granted, free of charge, to any person obtaining a copy
          # of this software and associated documentation files (the "Software"), to deal
          # in the Software without restriction, including without limitation the rights
          # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
          # copies of the Software, and to permit persons to whom the Software is
          # furnished to do so, subject to the following conditions:
          #
          # The above copyright notice and this permission notice shall be included in
          # all copies or substantial portions of the Software.
          #
          # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
          # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
          # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
          # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
          # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
          # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
          # THE SOFTWARE.
          
          #This script assumes, these packages are installed, as network may not be setup
          #dosfstools initramfs-tools rsync u-boot-tools
          
          source $(dirname "$0")/functions.sh
          
          #mke2fs -c
          #Check the device for bad blocks before creating the file system.
          #If this option is specified twice, then a slower read-write test is
          #used instead of a fast read-only test.
          
          mkfs_options=""
          #mkfs_options="-c"
          #mkfs_options="-cc"
          
          device_eeprom="bbb-eeprom"
          
          check_if_run_as_root
          
          startup_message
          prepare_environment
          
          countdown 5
          check_eeprom
          check_running_system
          activate_cylon_leds
          prepare_drive

and you get bash access, in that init, over serial <quite useful to
debug single user mode>...

Regards,

Colin_Bester · October 21, 2015, 10:24pm

Thanks Robert, appreciate the info.