# # $Id$ # Notes about the MVME147 bsp MVME147 port for TNI - Telecom Bretagne by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr) May 1996 This bsp is essentially based on the mvme136 bsp. Summary of the modifications that were made: * include - bsp.h Peripheral Channel Controller memory mapping Z8530 memory mapping * startup - bspstart.c main () setup for VME roundrobin mode setup for the PCC interrupt vector base - bspclean.c bsp_cleanup () disable timer 1 & 2 interruptions - linkcmds set the RAM start (0x5000) and size (4Meg - 0x5000) - setvec.c unchanged - sbrk.c unchanged * console - console.c taken from the dmv152 bsp (Zilog Z8530) with no modification * clock - ckinit.c entirely rewritten for the PCC tick timer 2 * timer - timerisr.s and timer.c entirely rewritten for the PCC tick timer 1 now gives results un 6.25 us units (mininum timer delay, suprising big grain) * times - updated results for the mvme147 (beware of the 6.25 us grain) * Makefiles - compilation of shmsupp simply removed To be done: * add VMEchip memory mapping to include/bsp.h * update the overheads in coverhead.h * add support for serila ports 2,3 and 4. Other notes: * There is no MP support (no more shmsupp) because I have no experience of the VME bus. The mvme136 shared memory support does not seem applicable on the VMEchip of the mvme147, so I don't know where to start. Suggestions are welcome. * All the timing tests and sp tests have been run except tmoverhd. The test hangs during the pause (where the task should be suspended until a return). Maybe the rtems_initialize_executive is no more reentrant with this bsp. Future work: * Add gdb serial remote support. * Shared memory support (I don't really need it, but I can do it if it's simple). * Message passing on VME bus, with Ada 95 annex E (distributed systems) in mind.