README: Update repository structure

Signed-off-by: Wiktoria Kuna <[email protected]>

README.md

@@ -1,15 +1,18 @@
 # Rowhammer Tester
 
-Copyright (c) 2020-2023 [Antmicro](https://www.antmicro.com)
+Copyright (c) 2020-2024 [Antmicro](https://www.antmicro.com)
 
 The aim of this project is to provide a platform for testing the [DRAM "Row Hammer" vulnerability](https://users.ece.cmu.edu/~yoonguk/papers/kim-isca14.pdf).
 
 The repository includes:
 
+* `.github/` - Directory with CI configuration
+* `docs/` - Sphinx-based documentation for the project
+* `firmware/` - contains [Buildroot](https://github.com/buildroot/buildroot) configurations for Linux on DDR5 Tester and ZCU104 as well as custom configurations and board-specific firmware
+* `openocd_scripts/` - [OpenOCD](https://github.com/openocd-org/openocd) helper scripts
 * `rowhammer_tester/` - Core part of the project, a Python module including:
-
   * gateware for Rowhammer Tester platform
   * userspace scripts used for running tests
-* `docs/` - Sphinx-based documentation for the project
-* `.github/` - Directory with CI configuration
+* `tests/` - Rowhammer Tester's block tests (e.g. PayloadExecutor, BIST)
+* `third_party/` - Third party Rowhammer Tester sources