CP80617004119AES LBU3 Intel, CP80617004119AES LBU3 Datasheet - Page 329
CP80617004119AES LBU3
Manufacturer Part Number
CP80617004119AES LBU3
Description
Manufacturer
Intel
Datasheet
1.CP80617004119AES_LBU3.pdf
(388 pages)
Specifications of CP80617004119AES LBU3
Lead Free Status / RoHS Status
Compliant
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Processor Configuration Registers
1.19.18
Datasheet
PHMLIMIT_REG - Protected High-Memory Limit Register
B/D/F/Type:
Address Offset:
Default Value:
Access:
Size:
Register to setup the limit address of DMA protected high-memory region. This register
must be setup before enabling protected memory through PMEN_REG, and must not be
updated when protected memory regions are enabled.
This register is always treated as RO for implementations not supporting protected high
memory region (PHMR field reported as 0 in the Capability register).
The alignment of the protected high memory region limit depends on the number of
reserved bits (N) of this register. Software may determine the value of N by writing all
1's to this register, and finding most significant zero bit position below host address
width (HAW) in the value read back from the register. Bits N:0 of the limit register is
decoded by hardware as all 1s.
The protected high-memory base & limit registers functions as follows.
Software must not modify this register when protected memory regions are enabled.
(PRS field Set in PMEN_REG).
•
•
63:21
20:0
Bit
Programming the protected low-memory base and limit registers with the same
value in bits HAW:(N+1) specifies a protected low-memory region of size 2^(N+1)
bytes.
Programming the protected high-memory limit register with a value less than the
protected high-memory base register disables the protected high-memory region.
Access
RW
RO
00000000
000000h
Default
Value
000h
Protected High-Memory Limit (PHML)
This register specifies the last host physical address of the
DMA protected high-memory region in system memory.
Hardware may not utilize Bits 63:HAW, where HAW is the
host address width.
Reserved
0/0/0/DMIVC1REMAP
78-7Fh
0000000000000000h
RO; RW
64 bits
Description
329
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