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Diffstat (limited to 'bsps/powerpc/motorola_powerpc/README.MVME2100')
| -rw-r--r-- | bsps/powerpc/motorola_powerpc/README.MVME2100 | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/bsps/powerpc/motorola_powerpc/README.MVME2100 b/bsps/powerpc/motorola_powerpc/README.MVME2100 new file mode 100644 index 0000000000..6b06eb0f4f --- /dev/null +++ b/bsps/powerpc/motorola_powerpc/README.MVME2100 @@ -0,0 +1,128 @@ +The MVME2100 is a Motorola VMEbus board which is similar to the other +Motorola PowerPC boards supported by this BSP. But it does not support +the Motorola CPU Configuration Register. This makes it impossible to +dynamically probe and determine that you are executing on this board +variant. So this BSP variant must be explicitly built to only support +the MVME2100. The complete list of differences found so far is: + + * No CPU Configuration Register + * one COM port + * COM port is on PCI IRQ not ISA IRQ + * limited on RAM (32 or 64 MB) + * uses the EPIC interrupt controller on the MPC8240 + * does not have an ISA bus but has an ISA I/O address space + * cannot set DBAT2 in bspstart like other variants because + there are PCI/ISA Interrupt Acknowledge registers at this space + This BSP may have left some PCI memory uncovered + * PPCBug starts programs with vectors still in ROM + +Supported Features: + - Interrupt driven console using termios + - Network device driver + - Real-Time Clock driver + - Clock Tick Device Driver + +Things to address: + - Does not return to monitor + - Level 1 cache is disabled for now + - Check on trying to read CPU Configuration Register for CHRP/Prep for PCI + and report a failure if in the wrong mode. May be able to set the model + but it may be hard to test if we break PPCBug. + - Use NVRAM for network configuration information + +BSP Features Not Implemented: + - VMEbus mapped in but untested + - OpenPIC features not required for BSP are not supported + +Memory Map +========== + BAT Mapping + + ffff ffff |------------------------------------| ----- ffff ffff + | ROM/FLASH Bank 0 | | + fff0 0000 |------------------------------------| | + | System I/O | | + ffe0 0000 |------------------------------------| | + | Replicated ROM/FLASH Bank 0 | | + | Replicated System I/O | | + ff80 0000 |------------------------------------| | + | ROM/FLASH Bank 1 | DBAT3 + ff00 0000 |------------------------------------| - Supervisor R/W + | PCI Interrupt Acknowledge | - Cache Inhibited + fef0 0000 |------------------------------------| - Guarded + | PCI Configuration Data Register | | + fee0 0000 |------------------------------------| | + | PCI Configuration Address Register | | + fec0 0000 |------------------------------------| | + | PCI I/O Space | | + fe80 0000 |------------------------------------| | + | PCI/ISA I/O Space | | + fe00 0000 |------------------------------------| | + | PCI/ISA Memory Space | | + fd00 0000 |------------------------------------| | + | | | + | xxxxxxxxxxxxxx| ----- f000 0000 + | x not mapped | | + | xxxxxxxxxxxxxx| ----- a000 0000 + | | | + | | | + | | DBAT0 + | | - Supervisor R/W + | | - Cache Inhibited + | | - Guarded + | | | + | | | + | | ----- 9000 0000 + | | | + | | | + | PCI Memory Space | DBAT2 + | | - Supervisor R/W + | | - Cache Inhibited + | | - Guarded + | | | + | | | + | | | + 8000 0000 |------------------------------------| ----- 8000 0000 + | x | + | x not mapped | + | Reserved xxxxxxxxxxxxxx| ----- 1000 0000 + | | | + | | | + 0200 0000 |------------------------------------| | + | | | + | | | + | | | + | | | + | DRAM (32MB) | DBAT1/IBAT1 + | | - Supervisor R/W + | | | + | | | + | | | + | | | + 0000 0000 |------------------------------------| ----- 0000 0000 + + +TTCP Performance on First Day Run +================================= +Fedora Core 1 on (according to /proc/cpuinfo) a 300 Mhz P3 using Netgear +10/100 CardBus NIC on a dedicated 10BaseT LAN. + +ON MVME2100: ttcp -t -s 192.168.2.107 +REPORTED ON MVME2100: +ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.107 +ttcp-t: socket +ttcp-t: connect +ttcp-t: 16777216 bytes in 20.80 real seconds = 787.69 KB/sec +++ +ttcp-t: 2048 I/O calls, msec/call = 10.40, calls/sec = 98.46 +ttcp-t: 0.0user 20.8sys 0:20real 100% 0i+0d 0maxrss 0+0pf 0+0csw + +ON MVME2100: ttcp -t -s 192.168.2.107 +REPORTED ON MVME2100: +ttcp -r -s +ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp +ttcp-r: socket +ttcp-r: accept from 192.168.2.107 +ttcp-r: 16777216 bytes in 15.41 real seconds = 1063.21 KB/sec +++ +ttcp-r: 11588 I/O calls, msec/call = 1.36, calls/sec = 751.98 +ttcp-r: 0.0user 15.4sys 0:15real 100% 0i+0d 0maxrss 0+0pf 0+0csw + |