| [afe99c2] | 1 | Notes about the MVME147S bsp |
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| 2 | |
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| 3 | MVME147 port for TNI - Telecom Bretagne |
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| 4 | by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr) |
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| 5 | May 1996 |
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| 6 | |
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| 7 | |
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| 8 | This bsp is essentially based on the mvme136 bsp, |
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| 9 | and is only an extention of the MVME147 bsp. There |
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| 10 | are slight differences in the VMEchips used in the MVME147S and |
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| 11 | the MVME147 that should prevent the shmsupport and the startup |
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| 12 | code from running on a MVME147. |
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| 13 | |
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| 14 | Summary of the modifications that were made: |
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| 15 | |
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| 16 | * include |
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| 17 | |
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| 18 | - bsp.h |
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| 19 | Peripheral Channel Controller memory mapping |
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| 20 | Z8530 memory mapping |
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| 21 | VMEchip memory mapping |
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| 22 | |
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| 23 | * startup |
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| 24 | |
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| 25 | - bspstart.c |
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| 26 | main () setup for VME roundrobin mode |
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| 27 | setup for the PCC interrupt vector base |
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| 28 | setup of the VME shared memory |
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| 29 | - bspclean.c |
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| 30 | bsp_cleanup () disable timer 1 & 2 interruptions |
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| 31 | - linkcmds set the RAM start (0x7000) and size (4Meg - 0x7000) |
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| 32 | - setvec.c unchanged |
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| 33 | - sbrk.c unchanged |
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| 34 | |
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| 35 | * console |
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| 36 | |
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| 37 | - console.c taken from the dmv152 bsp (Zilog Z8530) |
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| 38 | with no modification |
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| 39 | |
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| 40 | * clock |
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| 41 | |
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| 42 | - ckinit.c entirely rewritten for the PCC tick timer 2 |
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| 43 | |
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| 44 | * timer |
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| 45 | |
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| 46 | - timerisr.s and timer.c |
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| 47 | entirely rewritten for the PCC tick timer 1 |
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| 48 | now gives results un 6.25 us units (mininum timer delay, |
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| 49 | suprising big grain) |
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| 50 | |
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| 51 | * times |
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| 52 | |
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| 53 | - updated results for the mvme147 (beware of the 6.25 us grain) |
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| 54 | |
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| 55 | * shmsupp : |
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| 56 | Specific to the S version of the MVME147 |
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| 57 | Only tested with 2 boards, in interrupt mode. |
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| 58 | Uses the top 128k of the VME system controller board RAM |
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| 59 | as the shared space. |
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| 60 | |
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| 61 | - mpisr.c : uses the SIGLP interruption |
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| 62 | |
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| 63 | - Makefile : unchanged |
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| 64 | |
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| 65 | - getcfg.c : rewritten |
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| 66 | |
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| 67 | - lock.c unchanged |
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| 68 | |
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| 69 | - addrconv.c unchanged |
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| 70 | |
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| 71 | * Makefiles |
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| 72 | |
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| 73 | - unchanged |
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| 74 | |
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| 75 | |
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| 76 | To be done: |
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| 77 | |
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| 78 | * update the overheads in coverhead.h |
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| 79 | |
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| 80 | * add support for serial ports 2,3 and 4. |
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| 81 | |
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| 82 | Other notes: |
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| 83 | |
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| 84 | * All the timing tests and sp tests have been run except tmoverhd. |
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| 85 | The test hangs during the pause (where the task should be suspended |
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| 86 | until a return). Maybe the rtems_initialize_executive is no more |
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| 87 | reentrant with this bsp. |
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| 88 | |
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