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Core Logic Module - SMI Status and ACPI Registers - Function 1

6.4.2SMI Status and ACPI Registers - Function 1

The register space designated as Function 1 (F1) is used to configure the PCI portion of support hardware for the SMI Status and ACPI Support registers. The bit formats for the PCI Header registers are given in Table 6-32.

Located in the PCI Header registers of F1 are two Base Address Registers (F1BARx) used for pointing to the regis- ter spaces designated for SMI status and ACPI support, described later in this section.

Table 6-32. F1: PCI Header Registers for SMI Status and ACPI Support

Bit

Description

 

 

 

 

 

Index 00h-01h

Vendor Identification Register (RO)

Reset Value: 100Bh

 

 

 

Index 02h-03h

Device Identification Register (RO)

Reset Value: 0501h

 

 

 

Index 04h-05h

PCI Command Register (R/W)

Reset Value: 0000h

 

 

 

15:1

Reserved. (Read Only)

 

 

 

 

0

I/O Space. Allow the Core Logic module to respond to I/O cycles from the PCI bus.

 

 

0:

Disable.

 

 

1:

Enable.

 

 

This bit must be enabled to access I/O offsets through F1BAR0 and F1BAR1 (see F1 Index 10h and 40h).

 

 

 

 

Index 06h-07h

PCI Status Register (RO)

Reset Value: 0280h

 

 

 

 

Index 08h

 

Device Revision ID Register (RO)

Reset Value: 00h

 

 

 

Index 09h-0Bh

PCI Class Code Register (RO)

Reset Value: 068000h

 

 

 

 

Index 0Ch

 

PCI Cache Line Size Register (RO)

Reset Value: 00h

 

 

 

 

Index 0Dh

 

PCI Latency Timer Register (RO)

Reset Value: 00h

 

 

 

 

Index 0Eh

 

PCI Header Type (RO)

Reset Value: 00h

 

 

 

 

Index 0Fh

 

PCI BIST Register (RO)

Reset Value: 00h

 

 

 

Index 10h-13h

Base Address Register 0 - F1BAR0 (R/W)

Reset Value: 00000001h

This register allows access to I/O mapped SMI status related registers. Bits [7:0] are read only (0000 0001), indicating a 256-byte I/O address range. Refer to Table 6-33 on page 237 for bit formats and reset values of the SMI status registers.

31:8

SMI Status Base Address.

 

 

 

 

 

 

7:0

Address Range. (Read Only)

 

 

 

 

 

 

Index 14h-2Bh

Reserved

Reset Value: 00h

 

 

 

Index 2Ch-2Dh

Subsystem Vendor ID (RO)

Reset Value: 100Bh

 

 

 

Index 2Eh-2Fh

Subsystem ID (RO)

Reset Value: 0501h

 

 

 

Index 30h-3Fh

Reserved

Reset Value: 00h

 

 

 

Index 40h-43h

Base Address Register 1 - F1BAR1 (R/W)

Reset Value: 00000001h

This register allows access to I/O mapped ACPI related registers. Bits [7:0] are read only (0000 0001), indicating a 256 byte address range. Refer to Table 6-34 on page 247 for bit formats and reset values of the ACPI registers.

Note:

This Base Address register moved from its normal PCI Header Space (F1 Index 14h) to prevent plug and play software from

 

relocating it after an FACP table is built.

 

 

 

 

 

 

 

31:8

 

ACPI Base Address.

 

 

 

 

 

 

 

7:1

 

Address Range. (Read Only)

 

 

 

 

 

 

0

 

Enable. (Write Only) This bit must be set to 1 to enable access to ACPI Support Registers.

 

 

 

 

 

 

Index 44h-FFh

Reserved

Reset Value: 00h

236

AMD Geode™ SC1200/SC1201 Processor Data Book

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AMD SC1200, SC1201 SMI Status and Acpi Registers Function, 32. F1 PCI Header Registers for SMI Status and Acpi Support