LoadProcConfig is an IDA Plugin to load processor configuration files.
With just a couple of clicks configuration files can turn this:
Into this, adding memory regions, entries and registers/ports:
By default IDA is shipped with configuration files for many processors in IDA/cfg folder. These configuration files are loaded automatically when corresponding processor module is loaded.
However, this approach has some disadvantages:
- You have to keep your own configuration files inside IDA
- There is no easy way to load and apply configuration file on existing database
- Most important, ARM processor module doesn't have configuration file
Current plugin was implemented to address all these issues.
Just copy LoadProcConfig.pmc and LoadProcConfig.pmc64 to IDA plugins folder.
From Edit / Plugins menu choose Load Processor Config.
Then open configuration file using the file dialog.
IDA will parse this file and display all available devices.
Pick your device and press OK.
Choose what do you want to load from this configuration file.
Plugin will reanalyse entire database using device description and create additional memory regions.
There are many configuration files in IDA/cfg folder. While the format has no proper documentation, we can get some ideas by looking into idasdk/module/iocommon.cpp
Every configuration includes following parts:
; Default device in current configuration file
.default MYDEVICE
; Device description
.MYDEVICE
; RAM/FLASH specification
RAM=512
ROM=8192
EEPROM=512
; Memory Map
area DATA I_SRAM 0x00060:0x00260 Internal SRAM
area DATA E_SRAM 0x00260:0x10000 External SRAM
; Interrupts and reset vector assignments
entry RESET 0x0000 External Reset, Power-on Reset and Watchdog Reset
entry UART_RX 0x0009 UART, Rx Complete
; Registers (with bit fields)
USR 0x000B UART Status Register
USR.RXC 7 UART Receive Complete
USR.TXC 6 UART Transmit Complete
USR.UDRE 5 UART Data Register Empty
USR.FE 4 Framing Error
USR.OR 3 Overrun
You can find example for STM32F40x in Configurations folder