Intel C2518 FH8065501516710 Data Sheet
Product codes
FH8065501516710
Volume 2—System Address Maps—C2000 Product Family
Physical Address Space Map
Intel
®
Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 2 of 3
September 2014
176
Order Number: 330061-002US
10.1.1.3
Additional Mappings
Two additional mappings are available in the SoC transaction router:
• SMM Range
• Non-Snoop Range
• Non-Snoop Range
shows these mappings which are set by the BIOS and the settings are
locked.
SMI handlers running on a CPU core execute out of SMM memory. To protect this
memory from non-CPU core access, the SMM Range (BSMMRRL-BSMMRRH) is
To prevent snoops of the CPU cores when DMA devices access a specific memory
region, the Non-Snoopable Memory range (BNOCACHE.Lower Bound-
10.1.1.4
Isolated Memory Regions
Seven isolated regions of memory are defined and masked to prohibit certain system
agents from accessing memory. The registers that define the regions and provide
access control settings are BIMR[0-7]L, BIMR[0-7]H, BIMR[0-7]RAC, and BIMR[0-
7]WAC. These are internal Sideband Registers. See
Figure 10-4. Physical Address Space - SMM and Non-Snoop Mappings
64 GB
Physical Address
Space
BNOCACHE.Upper...
BNOCACHE.Lower...
0
Non-Snoopable
Memory
Low or High DRAM in
Physical Space
BSMMRRH (SMM Range Hi)
BSMMRRL (SMM Range Lo)
SMM Range