Merge patch series "mkimage: Detect FIT image load address overlaps and fix related test/DTS issues"

Aristo Chen <[email protected]> says:

This patch series enhances FIT image robustness by adding **memory
region overlap detection** to `mkimage` and fixing existing overlaps
in DTS files and `binman` tests.

The primary goal is to prevent runtime memory corruption from
conflicting load addresses in FIT images.

Key Changes:

1.  `mkimage` Overlap Detection: A new validation in
    `tools/fit_image.c` checks for overlapping load addresses
    within FIT configurations. `mkimage` now errors out with
    detailed info on conflicts, preventing bad FIT image creation.

2.  New Test Case: A Python test verifies the new detection.
    It intentionally creates an overlap (kernel and FDT)
    to confirm correct error handling.

3.  Fixes for Existing Overlaps:
    * Board DTS (k3-am6xx): Adjusted load addresses for TI
      firmware stubs to prevent conflicts. This resolves
      previously undetected overlaps.
    * `binman` Tests: Fixed several tests. U-Boot load
      addresses were shifted to avoid ATF conflicts. A new
      linker script for TEE ELF sections ensures distinct
      memory layouts.

4.  Documentation: Added guidance for developers on how to
    determine ELF load addresses using readelf, linker scripts,
    and objdump when working with binman FIT images.

Impact:

This series improves FIT image reliability by catching overlaps
at build time, helping developers resolve issues before runtime
failures.

Link: https://lore.kernel.org/r/[email protected]

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