1 | The MVME2100 is a Motorola VMEbus board which is similar to the other |
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2 | Motorola PowerPC boards supported by this BSP. But it does not support |
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3 | the Motorola CPU Configuration Register. This makes it impossible to |
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4 | dynamically probe and determine that you are executing on this board |
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5 | variant. So this BSP variant must be explicitly built to only support |
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6 | the MVME2100. The complete list of differences found so far is: |
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7 | |
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8 | * No CPU Configuration Register |
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9 | * one COM port |
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10 | * COM port is on PCI IRQ not ISA IRQ |
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11 | * limited on RAM (32 or 64 MB) |
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12 | * uses the EPIC interrupt controller on the MPC8240 |
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13 | * does not have an ISA bus but has an ISA I/O address space |
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14 | * cannot set DBAT2 in bspstart like other variants because |
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15 | there are PCI/ISA Interrupt Acknowledge registers at this space |
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16 | This BSP may have left some PCI memory uncovered |
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17 | * PPCBug starts programs with vectors still in ROM |
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18 | |
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19 | Supported Features: |
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20 | - Interrupt driven console using termios |
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21 | - Network device driver |
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22 | - Real-Time Clock driver |
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23 | - Clock Tick Device Driver |
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24 | |
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25 | Things to address: |
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26 | - Does not return to monitor |
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27 | - Level 1 cache is disabled for now |
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28 | - Check on trying to read CPU Configuration Register for CHRP/Prep for PCI |
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29 | and report a failure if in the wrong mode. May be able to set the model |
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30 | but it may be hard to test if we break PPCBug. |
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31 | - Use NVRAM for network configuration information |
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32 | |
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33 | BSP Features Not Implemented: |
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34 | - VMEbus mapped in but untested |
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35 | - OpenPIC features not required for BSP are not supported |
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36 | |
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37 | Memory Map |
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38 | ========== |
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39 | BAT Mapping |
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40 | |
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41 | ffff ffff |------------------------------------| ----- ffff ffff |
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42 | | ROM/FLASH Bank 0 | | |
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43 | fff0 0000 |------------------------------------| | |
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44 | | System I/O | | |
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45 | ffe0 0000 |------------------------------------| | |
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46 | | Replicated ROM/FLASH Bank 0 | | |
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47 | | Replicated System I/O | | |
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48 | ff80 0000 |------------------------------------| | |
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49 | | ROM/FLASH Bank 1 | DBAT3 |
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50 | ff00 0000 |------------------------------------| - Supervisor R/W |
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51 | | PCI Interrupt Acknowledge | - Cache Inhibited |
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52 | fef0 0000 |------------------------------------| - Guarded |
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53 | | PCI Configuration Data Register | | |
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54 | fee0 0000 |------------------------------------| | |
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55 | | PCI Configuration Address Register | | |
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56 | fec0 0000 |------------------------------------| | |
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57 | | PCI I/O Space | | |
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58 | fe80 0000 |------------------------------------| | |
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59 | | PCI/ISA I/O Space | | |
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60 | fe00 0000 |------------------------------------| | |
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61 | | PCI/ISA Memory Space | | |
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62 | fd00 0000 |------------------------------------| | |
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63 | | | | |
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64 | | xxxxxxxxxxxxxx| ----- f000 0000 |
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65 | | x not mapped | | |
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66 | | xxxxxxxxxxxxxx| ----- a000 0000 |
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67 | | | | |
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68 | | | | |
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69 | | | DBAT0 |
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70 | | | - Supervisor R/W |
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71 | | | - Cache Inhibited |
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72 | | | - Guarded |
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73 | | | | |
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74 | | | | |
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75 | | | ----- 9000 0000 |
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76 | | | | |
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77 | | | | |
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78 | | PCI Memory Space | DBAT2 |
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79 | | | - Supervisor R/W |
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80 | | | - Cache Inhibited |
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81 | | | - Guarded |
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82 | | | | |
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83 | | | | |
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84 | | | | |
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85 | 8000 0000 |------------------------------------| ----- 8000 0000 |
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86 | | x | |
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87 | | x not mapped | |
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88 | | Reserved xxxxxxxxxxxxxx| ----- 1000 0000 |
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89 | | | | |
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90 | | | | |
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91 | 0200 0000 |------------------------------------| | |
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92 | | | | |
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93 | | | | |
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94 | | | | |
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95 | | | | |
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96 | | DRAM (32MB) | DBAT1/IBAT1 |
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97 | | | - Supervisor R/W |
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98 | | | | |
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99 | | | | |
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100 | | | | |
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101 | | | | |
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102 | 0000 0000 |------------------------------------| ----- 0000 0000 |
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103 | |
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104 | |
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105 | TTCP Performance on First Day Run |
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106 | ================================= |
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107 | Fedora Core 1 on (according to /proc/cpuinfo) a 300 Mhz P3 using Netgear |
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108 | 10/100 CardBus NIC on a dedicated 10BaseT LAN. |
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109 | |
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110 | ON MVME2100: ttcp -t -s 192.168.2.107 |
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111 | REPORTED ON MVME2100: |
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112 | ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.107 |
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113 | ttcp-t: socket |
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114 | ttcp-t: connect |
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115 | ttcp-t: 16777216 bytes in 20.80 real seconds = 787.69 KB/sec +++ |
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116 | ttcp-t: 2048 I/O calls, msec/call = 10.40, calls/sec = 98.46 |
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117 | ttcp-t: 0.0user 20.8sys 0:20real 100% 0i+0d 0maxrss 0+0pf 0+0csw |
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118 | |
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119 | ON MVME2100: ttcp -t -s 192.168.2.107 |
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120 | REPORTED ON MVME2100: |
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121 | ttcp -r -s |
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122 | ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp |
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123 | ttcp-r: socket |
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124 | ttcp-r: accept from 192.168.2.107 |
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125 | ttcp-r: 16777216 bytes in 15.41 real seconds = 1063.21 KB/sec +++ |
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126 | ttcp-r: 11588 I/O calls, msec/call = 1.36, calls/sec = 751.98 |
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127 | ttcp-r: 0.0user 15.4sys 0:15real 100% 0i+0d 0maxrss 0+0pf 0+0csw |
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128 | |
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