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-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.