32579B

Core Logic Module

In Fast Path Write, the Core Logic module responds to writes to the following addresses: 388h, 38Ah, 38Bh, 2x0h, 2x2h, and 2x8h

Table 6-38 on page 263 shows the bit formats of the sec- ond level SMI status reporting registers and the Fast Path Read/Write programming bits.

SMI# Asserted

GX1

Module

Core Logic Module

 

 

 

 

 

 

 

 

 

SMM software reads SMI Header

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If Bit X = 1

 

 

 

 

If Bit X = 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(External SMI)

 

 

 

 

(Internal SMI)

 

Call internal SMI handler

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to take appropriate action

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F1BAR0+Memory

Offset 02h

Read to Clear to determine top-level source of SMI

SMI de-asserted after all SMI Sources are Cleared (i.e., Top, Second, and Third Levels)

Bits [15:2] Other_SMI

Bit 1

AUDIO_SMI

Bit 0

Other_SMI

Top Level

If bit 1 = 1, Source of SMI is Audio Event

F3BAR0+Memory

Offset 10h

Read to Clear to determine second-level source of SMI

Bits [15:8]

RSVD

Bit 7

ABM5_SMI

Bit 6

ABM4_SMI

Bit 5

ABM3_SMI

Bit 4

ABM2_SMI

Bit 3

ABM1_SMI

Bit 2

ABM0_SMI

Bit 1

SER_INTR_SMI

Bit 0

I/O_TRAP_SMI

Second Level

 

 

 

 

 

 

 

 

 

F3BAR0+Memory

 

 

 

 

Offset 14h

 

 

 

 

Read to Clear

 

 

 

 

to determine

 

 

 

 

third-level

 

Take

source of SMI

 

 

 

Bits [31:14]

 

Appropriate

 

Action

Other_RO

 

 

 

 

Bit 13

 

 

 

 

SMI_SC/FM_TRAP

 

 

 

 

 

 

 

 

 

Bit 12

 

If bit 0 = 1,

 

SMI_DMA_TRAP

 

Source of

 

Bit 11

 

SMI is

 

 

 

 

 

 

 

 

SMI_MPU_TRAP

 

I/O Trap

 

 

 

 

 

Bit 10

 

 

 

 

 

 

 

 

 

 

 

 

SMI_SC/FM_TRAP

 

 

 

 

 

 

 

 

 

 

 

 

 

Bits [9:0]

 

 

 

 

Other_RO

 

 

 

 

 

 

 

 

 

Third Level

Take

Appropriate

Action

Figure 6-14. Audio SMI Tree Example

172

AMD Geode™ SC1200/SC1201 Processor Data Book

Page 172
Image 172
AMD SC1200, SC1201 manual Module Core Logic Module