ghidrARMloader

This loads raw dumps of arm firmware in ghidra

IT WILL NOT WORK ON ITS OWN, it needs these components :

1. The ARM chip database available here copied (or symlinked) in the data directory:

   https://github.com/Jegeva/idarm-resultdb-nodescription

   (The db is built with https://github.com/Jegeva/idarm/)

AND

2. the sqlite3 jdbc driver available here :

   https://github.com/xerial/sqlite-jdbc

   https://repo1.maven.org/maven2/org/xerial/sqlite-jdbc/3.34.0/sqlite-jdbc-3.34.0.jar

   installed in your build path

Once you are there, try to load any raw ARM dump.

It should detect :

• If it is a Cortex dump (by identifiying the interrupt vector table
• The base adress (for cortexes)

You can then just select the vendor and the MCU in the loading option menu

Once loaded :

• Every peripheral register address is named
• Every register is declared as a bitfield struct with the bits named as in the chip's datasheet.
• the IVT is named to the appropriate Standard peripheral (or number when unknown (it is the case in a lot of SVDs))
• The peripheral bits are defined as the appropriate struct

exemple GPIO peripheral ODR register structure with an STM32F103 :

🔔 Currently ghidra isn't supporting bitfieldw very well in disassembly and decompilation

NationalSecurityAgency/ghidra#647

NationalSecurityAgency/ghidra#1059

This supports ~650 chips from

• Atmel
• Cypress
• Freescale
• Fujitsu
• Holtek
• Nordic
• Nuvoton
• NXP
• SiliconLabs
• Spansion
• STMicro
• TexasInstruments
• Toshiba