2. ABL

The application bootloader (ABL/LinuxLoader): container layout and function inventory, the LinuxLoaderEntry orchestration and kernel/DTB/ramdisk hand-off, the fastboot command surface, and AVB (verified boot / lock state). The six ABL pages are grouped here since they’re really one loader stage’s internals split by concern.

• 2.1. ABL overview, key handling, fastboot
• 2.2. ABL entry point and top-level orchestration
• 2.3. Kernel/DTB/ramdisk load and the kernel hand-off
• 2.4. AVB enforcement code path (LoadImageAndAuth / libavb)
• 2.5. Fastboot handler internals (FastbootLib)
• 2.6. ABL function map and upstream-source correlation