AMD Geode LX 800@0.9W - Manual (Page 81)

AMD Geode™ LX Processors Data Book 81
GLIU Register Descriptions 33234H
4.2.4.2 P2D Base Mask Offset Descriptor (P2D_BMO)
See Table 4.1.3.1 "Memory Routing and Translation" on page 47 for details on the descriptor usage.
GLIU0 P2D_BMO[1:0]
MSR Address 10000026h-10000027h
Type R/W
Reset Value 00000FF0_FFF00000h
P2D_BMO Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
PDID1
PCMP_BIZ
POFFSET PBASE
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PBASE PMASK
P2D_BMO Bit Descriptions
Bit Name Description
63:61 PDID1 Descriptor Destination ID. These bits define which Port to route the request to, if it is a
‘hit’ based on the other settings in this register.
000: Port 0 (GLIU0 = GLIU; GLIU1 = GLIU.)
001: Port 1 (GLIU0 = GLMC; GLIU1 = Interface to GLIU0.)
010: Port 2 (GLIU0 = Interface to GLIU1; GLIU1 = VP.)
011: Port 3 (GLIU0 = CPU Core; GLIU1 = GLCP.)
100: Port 4 (GLIU0 = DC; GLIU1 = GLPCI.)
101: Port 5 (GLIU0 = GP; GLIU1 = VIP.)
110: Port 6 (GLIU0 = Not Used; GLIU1 = SB.)
111: Port 7 (GLIU0 = Not Used; GLIU1 = Not Used.)
60 PCMP_BIZ Compare Bizzaro Flag.
0: Consider only transactions whose Bizzaro flag is low as a potentially valid address hit.
A low Bizzaro flag indicates a normal transaction cycle such as a memory or I/O.
1: Consider only transactions whose Bizzaro flag is high as a potentially valid address
hit. A high Bizzaro flag indicates a ‘special’ transaction, such as a PCI Shutdown or
Halt cycle.
59:40 POFFSET Physical Memory Address 2s Comp Offset. 2s complement offset that is added to
physical address on a hit.
39:20 PBASE Physical Memory Address Base. These bits form the matching value against which the
masked value of the physical address, bits [31:12] are directly compared. If a match is
found, then a “hit’ is declared, depending on the setting of the Bizzaro flag comparator.
19:0 PMASK Physical Memory Address Mask. These bits are used to mask address bits [31:12] for
the purposes of this ‘hit’ detection.