Intel E7-2803 AT80615006438AB User Manual

Datasheet Volume 2 of 2

19

In the Addr field, letters have the following meaning:

• "x...x": match any value
• "aaaa": match if equal to IOMMEN cfg_base field
• "bbbbb": match if equal to IOMMEN sca_clump field
• "ccc": match if corresponding IOMMEN sca_ena bit is set
• "dddd": match if greater than IOMMEN cfg_base and Addr[31] = 0
• "eeee": match if greater than IOMMEN cfg_base and Addr[31] = 1; prevent match 

when Addr[31:26] = 111111

• "ffff": match if the BIOSEN r/w enable bit is set for the corresponding segment, for 

reads and writes, respectively

• "*" means that Addr[43:32] = 0x000 always matches, and Addr[43:32] = 0xFF0 

matches in SMM mode

• "+" means that the address is in the I/O address space, separate from the memory 

address space

Target lists are needed for the CFG, MMIOL0/1, CPU/IOH Cfg, IOAPIC, FWH, and 
Legacy I/O regions. These entries make up the I/O Large (IOL) Decoder. The reasons 
for the existence of target lists for these regions are described in the following table. 

Intel

®

 Trusted Execution Technology (Intel

®

 TXT) is a component of the Intel

®

 Safer 

Computing Initiative (Intel

®

 SCI). Intel

®

 TXT was first introduced in client platforms. 

Intel TXT for Servers is an effort to extend Intel

®

 TXT into server platforms. Intel

®

 TXT 

for Servers is a software binary compatible with Intel

®

 TXT and uses a security model 

that allows the RAS features to co-exist with security. To achieve this objective, some 
of the system firmware is allowed to be within the trust boundary.

Intel

®

 TXT provides an architected process to measure the BIOS and measured launch 

environment (for example, VMM or OS) before launch.

• Intel

®

 TXT is a family of security capabilities now available on server platforms.

• Intel

®

 TXT uses features in the processors, chipset, BIOS, and TPM to enable more 

secure platforms. 

• Intel

®

 TXT works through measurement, dynamic launch mechanisms via special 

instructions, memory locking and sealing secrets. 

• Intel

®

 TXT helps detect and/or prevent software attacks. 

IntLog

N/A

N/A

N/A

1

N/A

always

IOS6

IntPhy

N/A

N/A

N/A

1

N/A

always

IOS6

EOI

N/A

N/A

N/A

1

N/A

always

IOS6

FERR

N/A

N/A

N/A

1

N/A

always

IOS5

1.

Non-contiguous