Intel MultiProcessor - Chapter 4 MP Configuration Table; MP Configuration Data Structures

Version 1.4 4-1
4
MP Configuration Table
The operating system must have access to some information about the multiprocessor
configuration. The MP specification provides two methods for passing this information to the
operating system: a minimal method for configurations that conform to one of a set of common
hardware defaults, and a maximal method that provides the utmost flexibility in hardware design.
Figure 4-1 shows the general layout of the MP configuration data structures.
00H
PHYSICAL ADDRESS POINTER
FIXED-LENGTH
HEADER
31 0
ENTRY TYPE
ENTRY TYPE
ENTRY LENGTH DEPENDS ON ENTRY TYPE
ENTRY LENGTH DEPENDS ON ENTRY TYPE
VARIABLE NUMBER OF
VARIABLE-LENGTH
ENTRIES
31 07815162324
31 07815162324
02CH
FLOATING
POINTER
STRUCTURE
MP
CONFIGURATION
TABLE
Figure 4-1. MP Configuration Data Structures