OsmocomBB Firmware » History » Revision 5
Revision 4 (nion, 02/19/2016 10:48 PM) → Revision 5/17 (nion, 02/19/2016 10:48 PM)
[[PageOutline]] = Background = The OsmocomBB source code comes with several applications for various purposes. Those applications can be devided into two separate classes, applications: * running on the baseband chip of the phone * running on a PC, communicating with the baseband firmware over serial Applications running on the PC can further be partitioned into: * Firmware management software (loading, flashing, ...) * GSM Layer 2/3 applications The following will provide you a rough overview of the most commonly used software pieces. = Baseband firmware = Binary location: src/target/firmware/board/*/*.bin Source locations: src/target/firmware/, particularly apps and layer1 == layer1 == [wiki:layer1.bin] is a A simple GSM layer 1 proxy, communicating over the [wiki:L1A_L23_Interface]. This allows you to run a full-blown GSM implementation on your host machine, communicating through the phones radio interface. == loader == [wiki:loader.bin] is our flash loader, dumper and second stage bootloader http://bb.osmocom.org/trac/wiki/PreliminaryRequirements == l1test == Layer 1 development application. This application does what layer1 does, but automatically tunes to the strongest ARFCN it can find. It can be used for stand-alone-testing of the phones radio. == loader == Our [wiki:Bootloader], available in various build configurations. == compal_dsp_dump == Application for dumping the contents of the DSP in the Calypso chip. == compal_dumper == The old compal device dumper. Use [wiki:Bootloader] instead once it is available. == hello_world == The initial obligatory "Hello, world!" application. Currently, this does more than say hello. Intended as a template for new applications. == rssi == The [blog:rssi-firmware] can be used to monitor the received signal indication (RSSI) of ARFCNs or the entire spectrum. = Firmware management software = Location (source and binary): src/host/osmocon == osmocon == [wiki:osmocon] is a console tool for interfacing our baseband firmware on the phone with applications on the host PC. It is responsible for downloading a baseband firmware or bootloader into the phone and relay communication between Layer 3 applications and baseband firmwares over serial. == osmoload == [wiki:osmoload] is used to write, dump and examine flash memory of supported phones. You will need this program for example if you intent [wiki:flashing] an application to the phone (the software is usually loaded into RAM). == calypso_pll == The [wiki:calypso_pll] tool can be used to calculate Calypso DPLL multiplier+divider. == rita_pll == The [wiki:rita_pll] tool can be used to calculate the Rita PLL multiplier/divider. = GSM Layer 2/3 applications = Location (source and binary): src/host/layer23/* Layer 3 applications implement various functionality based on GSM Layer 3 in combination with Layer 2 (LAPDm). == mobile == [wiki:mobile] is the most sophisticated OsmocomBB application so far. It implements most of the behavior of a regular GSM telephone, but is extended in many ways with features interesting to researchers. == cell_log == The cell_log application scans through valid available carrier frequencies, attempts to sync to them and dumps information gathered from the BCCH. It is usually used to create a list of used ARFCNs and information such as their reception levels, MNC, MCC, and System Information. == ccch_scan == The ccch_scan application can sync to a carrier ARFCN and logs power measurement and CCCH information (paging requests and Immediate Assignments). == bcch_scan == bcch_scan is basically a predecessor of cell_log and logs information as observed on the BCCH (System Information). == cbch_sniff == cbch_sniff dumps cell broadcast channel information such as, e.g., GPS location of the cell.