Boot sequence

This page describes the boot sequence of a system built upon Safecor.

Provisioning

The provisioning of the system is not described here, please look at this document.

Steps

• The system is started by the user
• Depending on the provisioning type, the local boot loader or the PXE boot loader is executed
• XEN kernel is loaded
• Linux kernel is loaded
• Initial RAM FS is loaded
• XEN kernel is executed
• Linux kernel is executed
• Initramfs is loaded and init is started
  • Kernel modules are loaded for framebuffer, disks, etc
  • Safecor's splash screen is shown
• Root filesystem is mounted
• OpenRC is started
  • Runlevel sysinit is executed
    • Hardware drivers are loaded
  • Runlevel boot is executed
    • System configuration is done
  • Runlevel default is executed
    • Services are started
• Safecor initialization sequence is started
  • Depending on the provisioning type, Alpine packages may be downloaded from the public repository, including Safecor and specific application packages, into the local repository
  • Also depending on the provisioning type, Alpine ISO image may be downloaded
  • Local PGP key is generated
  • Local repository is signed with the new PGP key
  • Safecor Dom0 daemon is started
    • USB devices are identified and attached to XEN
    • Communication channels are created
      • Message channel
      • Log channel
      • Input channel
    • Safecor packages are installed for the VMs
      • safecor-sys-usb
      • safecor-sys-gui