On Fri, Nov 18, 2011 at 3:47 PM, Mathias K. <[email protected]> wrote: > is there any plan to support new interfaces like bdm, stlink, msp430-fet or > lpc-link thats quite > different or works on higher layers then the simple jtag interface?
Hello Mathias, some time ago I have proposed general restructurization of openocd internals, it looks in brief as below: We need to clearly divide program into modules that have clear execution flow using clean data structures (i.e. context) instead global variables. Interface is the standard function set to drive the custom hardware in a generic manner. Higher layers are supposed to be done by TRANSPORT layer, so all drivers are the same :-) Above the transport there is a TARGET layer. Above there is a FLASH, OS, SMP, ... My proposition that is working with libswd is the "interface_bitbang" and "interface_transfer" generic function set that can toggle any port pin (even the internal logic such as RnW) and to transfer in/out bytestream out of char array. This works well and should do the job for all higher level transports. This is somehow contadiction to current placement of data into program queue. This queue should be left for internals imo. Librification of the transport and maybe other modules will allow to rapidly functionalities to expand without impact on other modules. Transport can be implemented by external library (such as libswd) so there is no need to expand internal structures and queues of the openocd. This wat we can also implement I2C, SPI, 1Wire, and any other protocol without impacting the rest of the program. Data structures should be contained into one structrue ot set of structures residing within "openocd_context" that is related with some openocd thread. This way we can have multiple openocd threads even in one program. Each thread can use different target or different interace... Structures might be aligned flat, as a list, of as a tree resembling the modules hierarchy (i.e. interface holds transport and transport holds target, or simply context stores all of them)... Best regards, Tomek -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
