Chapter 1 Board Description and Memory Maps
MVME3100 Programmer’s Guide (V3100A/PG1)
5
Memory Maps
Default Processor Memory Map
The MPC8540 presents a default processor memory map following RESET negation. The following
table shows the default memory map from the point of view of the processor. The e500 core only
provides one default TLB entry to access boot code and it allows for accesses within the highest 4KB
of memory. To access the full 8MB of default boot space (and the 1MB of CCSR space), additional TLB
entries must be set up within the e500 core for mapping these regions. Refer to the
MPC8540 Reference
Manual
listed in
Appendix A,
Related Documentation
, for details.
Notes
1.
This is the default location for the CCSRs, but it is not mapped after reset.
2.
Only FFFF F000 to FFFF FFFF is mapped after reset. The e500 core fetches the first instruction
from FFFF FFFC following a reset.
Table 1-2. MVME712-101 RTM Features Summary
Feature
Description
I/O
– One five-row P2 backplane connector for serial and Ethernet I/O
passed from the MVME3100
– Four RJ-45 connectors for rear-panel I/O: four asynchronous
serial channels
– Two RJ-45 connectors with integrated LEDs for rear panel I/O:
one 10/100/1000 Ethernet channel and one 10/100 Ethernet
channel
– One PIM site with rear-panel I/O
Miscellaneous
– Four rear-panel status indicators: 10/100/1000 and 10/100
Ethernet link/speed and activity LEDs
Table 1-3. Default Processor Address Map
Processor Address
Size
Definition
Notes
Start
End
0000 0000
FF6F FFFF
4087M
Not mapped
FF70 0000
FF7F FFFF
1M
MPC8540 CCS Registers
1
FF80 0000
FFFF FFFF
8M
Flash
2