Mdthbs

Why would Lupin kill Pettigrew?

Do creatures all have the same statistics upon being reanimated via the Animate Dead spell?

Get LaTeX form from step by step solution

What is the indigenous Russian word for a wild boar?

The deliberate use of misleading terminology

Can an old DSLR be upgraded to match modern smartphone image quality

Windows 10 Programs start without visual Interface

How was Apollo supposed to rendezvous in the case of a lunar abort?

Fastest way to perform complex search on pandas dataframe

Creating Fictional Slavic Place Names

Adding strings in lists together

What are the problems in teaching guitar via Skype?

Mother abusing my finances

Could IPv6 make NAT / port numbers redundant?

The qvolume of an integer

What's the most polite way to tell a manager "shut up and let me work"?

Future enhancements for the finite element method

How can I grammatically understand "Wir über uns"?

Are UK pensions taxed twice?

Rotated Position of Integers

How to properly maintain eye contact with people that have distinctive facial features?

Different PCB color ( is it different material? )

If a problem only occurs randomly once in every N times on average, how many tests do I have to perform to be certain that it's now fixed?

What does "tea juice" mean in this context?

Kernel not detecting system files

create a debian installer with custom kernelObserving a hard-disk write in kernel space (with drivers/modules)Linux/Embedded Linux - Understanding the Kernel and additional BSP specific componentsHow to Modify Android Boot Sequence in Order to Boot From an SD CardIs Linux's monolithic nature (part of) the problem with ARM drivers?Fedora 25 doesn't boot after removing nvidia driverLinux kernel error “No working init found"archlinux efi netboot kernel “ip” does not work?; systemd “Failed to start Switch Root.”EXT4 app2sd link2sd partition repair with bad superblock . Partition cannot be mounted on Android but will mount RW w/ su on Linux LiveSupport TI WL18xx WiFi/Bluetooth module on iMX7 Running Android 8.0.0

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

0

I'm currently part of a small team developing a kernel for an Android wearable. We're tempting to add NFC support to a smartwatch which has the hardware required, just no kernel or Android support for it.

We managed to get a building kernel without NFC drivers. Now that we've added the drivers, were encountering a weird issue where the kernel refuses to detect many of the system files.

When restoring a backup to the boot partition (not where the files are stored), I can see that the files are all there. Even without restoring the backup, entering a recovery mode allows me to the detect all of the files in their correct locations.

Does anyone have any clue what could cause this? Our initial thought was that the kernel wasn't mounting the system partition correctly. Thinking about this, I couldn't see how that could happen when all we've done is add some NFC chip drivers.

Kernel log: https://gist.github.com/davwheat/659cc48a5817c55fdd8311c6fa0db8ae

EDIT:

Example from the log:

[    4.479011] init: cannot find '/system/bin/tzdatacheck' (No such file or directory), disabling 'exec 1 (/system/bin/tzdatacheck)'

[    4.497677] init: cannot find '/system/vendor/bin/perfd' (No such file or directory), disabling 'perfd'

linux-kernel drivers android

share|improve this question

edited 1 hour ago

David Wheatley

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don’t understand what you mean by “the kernel refuses to detect many of the system files”. Please do not respond in comments; edit your question to make it clearer and more complete.
  
  – Scott
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Scott attempted to clear up by adding an excerpt from the log I attached. There isn't much else I can say. Android hasn't loaded at this point. It's the kernel's initialisation script running.
  
  – David Wheatley
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  this mentions a system image .... [ 3.364233] fs_mgr: Not running /system/bin/e2fsck on /dev/block/platform/soc/7824900.sdhci/by-name/userdata (executable not in system image) ..... is there a minimal boot image file, like initrd, in android?
  
  – jsotola
  28 mins ago
  
  
  

  
  
  
  

add a comment | 

0

I'm currently part of a small team developing a kernel for an Android wearable. We're tempting to add NFC support to a smartwatch which has the hardware required, just no kernel or Android support for it.

We managed to get a building kernel without NFC drivers. Now that we've added the drivers, were encountering a weird issue where the kernel refuses to detect many of the system files.

When restoring a backup to the boot partition (not where the files are stored), I can see that the files are all there. Even without restoring the backup, entering a recovery mode allows me to the detect all of the files in their correct locations.

Does anyone have any clue what could cause this? Our initial thought was that the kernel wasn't mounting the system partition correctly. Thinking about this, I couldn't see how that could happen when all we've done is add some NFC chip drivers.

Kernel log: https://gist.github.com/davwheat/659cc48a5817c55fdd8311c6fa0db8ae

EDIT:

Example from the log:

[    4.479011] init: cannot find '/system/bin/tzdatacheck' (No such file or directory), disabling 'exec 1 (/system/bin/tzdatacheck)'

[    4.497677] init: cannot find '/system/vendor/bin/perfd' (No such file or directory), disabling 'perfd'

linux-kernel drivers android

share|improve this question

edited 1 hour ago

David Wheatley

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don’t understand what you mean by “the kernel refuses to detect many of the system files”. Please do not respond in comments; edit your question to make it clearer and more complete.
  
  – Scott
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Scott attempted to clear up by adding an excerpt from the log I attached. There isn't much else I can say. Android hasn't loaded at this point. It's the kernel's initialisation script running.
  
  – David Wheatley
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  this mentions a system image .... [ 3.364233] fs_mgr: Not running /system/bin/e2fsck on /dev/block/platform/soc/7824900.sdhci/by-name/userdata (executable not in system image) ..... is there a minimal boot image file, like initrd, in android?
  
  – jsotola
  28 mins ago
  
  
  

  
  
  
  

add a comment | 

I'm currently part of a small team developing a kernel for an Android wearable. We're tempting to add NFC support to a smartwatch which has the hardware required, just no kernel or Android support for it.

We managed to get a building kernel without NFC drivers. Now that we've added the drivers, were encountering a weird issue where the kernel refuses to detect many of the system files.

When restoring a backup to the boot partition (not where the files are stored), I can see that the files are all there. Even without restoring the backup, entering a recovery mode allows me to the detect all of the files in their correct locations.

Does anyone have any clue what could cause this? Our initial thought was that the kernel wasn't mounting the system partition correctly. Thinking about this, I couldn't see how that could happen when all we've done is add some NFC chip drivers.

Kernel log: https://gist.github.com/davwheat/659cc48a5817c55fdd8311c6fa0db8ae

EDIT:

Example from the log:

[    4.479011] init: cannot find '/system/bin/tzdatacheck' (No such file or directory), disabling 'exec 1 (/system/bin/tzdatacheck)'

[    4.497677] init: cannot find '/system/vendor/bin/perfd' (No such file or directory), disabling 'perfd'

linux-kernel drivers android

share|improve this question

edited 1 hour ago

David Wheatley

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

[    4.479011] init: cannot find '/system/bin/tzdatacheck' (No such file or directory), disabling 'exec 1 (/system/bin/tzdatacheck)'

[    4.497677] init: cannot find '/system/vendor/bin/perfd' (No such file or directory), disabling 'perfd'

share|improve this question

edited 1 hour ago

David Wheatley

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 1 hour ago

David Wheatley

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

David WheatleyDavid Wheatley

11

New contributor

David Wheatley is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

David WheatleyDavid Wheatley

11