Module network_boot

Network boot integration for post-ExitBootServices ISO download.

This module bridges the UEFI bootloader and the bare-metal network stack.

Flow

1. Bootloader runs pre-EBS: probes hardware, allocates DMA, calibrates TSC
2. Bootloader calls ExitBootServices
3. Bootloader calls enter_network_boot() with BootHandoff
4. Network stack downloads ISO and writes to disk
5. Control returns for OS boot from downloaded ISO

Structs

• BlkProbeResult
  Block device probe result.
• NicProbeResult
  NIC probe result with transport information.

Functions

• enter_network_boot^⚠
  Network boot entry point (post-EBS).
• enter_network_boot_url^⚠
  Network boot with custom URL.
• extract_iso_name_from_url 🔒
  Extract ISO filename from URL. Returns the last path component, or “download.iso” if none found.
• prepare_handoff
  Prepare BootHandoff from UEFI boot services.
• prepare_handoff_with_blk
  Prepare BootHandoff with both NIC and block device info.
• validate_handoff
  Test if network boot handoff is valid.