Specifications

230 AMD Geode™ GeodeROM Functional Specification
System Management Mode Software
32087C
15.12.8 EVENT_MEMORY_TRAP
An access to a registered memory location has occurred.
• Parameter1
— Memory address (physical)
• Parameter2
— 01h = BYTE access
— 03h = WORD access
— 0Fh = DWORD access
— Bit 7 is set if access is a memory write
• Parameter3
— Data (valid only if access is a write)
15.12.9 EVENT_MEMORY_TIMEOUT
An access to a trapped memory location has not occurred for the interval specified when this event was registered.
• Parameter1
— Memory address
15.12.10 EVENT_VIDEO_INACTIVITY
This event is sent if the video has been inactive for the interval specified when this event was registered.
• No Parameters
15.12.11 EVENT_GPIO
A transition has occurred on a GPIO pin. Event GPIO symbols are defined in VSA2.H.
• Parameter1
—GPIO number
• Parameter2
— 00h = Falling edge
— 01h = Rising edge
15.12.12 EVENT_SOFTWARE_SMI
The receipt of this event signals that a software SMI has occurred. A VSM is only sent this message for software SMIs of
the value for which it registered. The SMI code is the value in AX at the time the SMI occurred. This event is provided prima-
rily for compatibility with BIOSs that are not VSA2 technology aware. Newer BIOSs should use virtual registers for commu-
nication with VSA technology.
• Parameter1
— SMI code
15.12.13 EVENT_PCI_TRAP
An access to a PCI configuration space has occurred. The VSM is only sent this message for PCI functions that were reg-
istered.
• Parameter1
— PCI config address
• Parameter2
— 01h = BYTE access
— 03h = WORD access
— 0Fh = DWORD access
— Bit 7 set if access is an I/O write
• Parameter3
— Data (valid only if access is a write)