forked from Imagelibrary/rtems
e8b28ba004
All tools should be removed from the RTEMS source repository at some point in time. Tools with a BSD-style license will be moved to the RTEMS tools repository. Unfortunately, this tool has no license information. Remove all uses of this tool from the code base. Users of HEX files should consider to use ELF instead. Close #3379.
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.