Edit arm bin file update#
Edit arm bin file series#

If this step is skipped, cross references will be broken and disassembling the file won’t work properly. Since the CPU won’t load the image from 0x00 where it starts in the file we have to relocate it. The firmware image is loaded into the ROM section of the IDA database.

Let’s proceed to the next step and relocate the loaded firmware image to it’s correct offset. Now you are done with the basic CPU settings. Since Cortex-M is thumb only, so no further thumb related settings are needed here. The middle pane can be found by pressing the “ Edit ARM architecture Options” button within the “ Processor options” menu. Look at the screenshot below for the best settings. Therefore we have to change the processor options accordingly. We learned that this devices use an ARMv7E-M based CPU. The next step is making some settings to the processor options. No disassembly required.ĭon’t press “ Ok” just yet. This document should provide you a lot of interesting information. Most of the time you will find a document labeled “ internal photos“. Do a search for the manufacturer with the FCC directly or in an independent database. If your device was FCC approved, there should be public information about it available online. This can be easily looked up by disassembling the radio and taking a look at the chips inside.Īnother more convenient way is to ask the FCC.

Edit arm bin file series#

The series of ANYTONE 878 radios is based on GigaDevice GD32 ARM Cortex-M4 microcontrollers. So we can simply load the CDD in IDA Pro. The file’s metadata is split into separate files. It is simply an image of the internal flash memory and it doesn’t even carry a file header. We are quite lucky here, since the firmware image is not encrypted of otherwise protected. The CDD is the largest of the files and this is actually the firmware image we need.

Edit arm bin file update#

If you have multiple memory regions you'll need/want to sum or sign them separately.Within the update package you will find the FW folder, which contains three files. I use the Program Header PT_LOAD records to determine what's loaded, ie real PROGBITS rather than assorted noise. Oh, and I also don't know why there are even sections with address=0. data section's address is given as out of the flash range (that's why I check for addr!=0 instead of 'outside flash range'). This was all a bit of guesswork, and I especially don't know why e.g. This results in the same size as the currently generated.

sizes of PREINIT_ARRAY, INIT_ARRAY, FINI_ARRAY.

sizes of all PROGBITS sections where address != 0x0.

Now, to determine the size of the wouldbe. I found some scattered info, like that linked below, and drew some, possibly erroneous, conclusions.

bin, I alas found no single document that describes exactly that. While I looked for information about what parts of the. elf file, and I see the sections further below.

I am using a library (ELFIO) to parse the. bin, too, with a call to objcopy on the modified elf. So I would manipulate the ELF file as post build step, and re-generate the. elf route and ditch my previous 'tack header onto. I am also trying to get this to flash all in one go (loader, app with info section) for debugging from CubeIDE, which is why I am now trying to go the. I added a linker script section (see below, '.buildinfo') to put some info into, also including the CRC and size of the firmware app image, so that the bootloader can check it when it's in flash. I have a bootloader and app project in one CubeIDE workspace, for a STM32F0 target. (since I am getting ' Error while parsing Rich Text Content' in the saved post all the time, even though in the EDITOR everything renders just fine, I dumped the text in there without nice formatting)