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Intel® Server Board SE7320SP2 & Intel Server Board SE7525GP2 TPS Error Reporting and Handling
Revision 2.0
144
6.3.6 DIM Code Checkpoints
The Device Initialization Manager (DIM) module gets control at various times during BIOS
POST to initialize different buses. The following table describes the main checkpoints where the
DIM module is accessed:
Table 66: DIM Code Checkpoints
Checkpoint Description
2A Initialize different buses and perform the following functions:
Reset, Detect, and Disable (function 0). Function 0 disables all device nodes, PCI devices,
and PnP ISA cards. It also assigns PCI bus numbers.
Static Device Initialization (function 1). Function 1 initializes all static devices that include
manual configured onboard peripherals, memory and I/O decode windows in PCI-PCI
bridges, and noncompliant PCI devices. Static resources are also reserved.
Boot Output Device Initialization (function 2). Function 2 searches for and initializes any
PnP, PCI, or AGP video devices.
38 Initialize different buses and perform the following functions:
Boot Input Device Initialization (function 3). Function 3 searches for and configures PCI
input devices and detects if system has standard keyboard controller.
IPL Device Initialization (function 4). Function 4 searches for and configures all PnP and
PCI boot devices.
General Device Initialization (function 5). Function 5 configures all onboard peripherals that
are set to an automatic configuration and configures all remaining PnP and PCI devices.
6.3.7 ACPI Runtime Checkpoints
ACPI checkpoints are displayed when an ACPI capable operating system either enters or
leaves a sleep state. The following table describes the type of checkpoints that may occur
during ACPI sleep or wake events:
Table 67: ACPI Runtime Checkpoints
Checkpoint Description
AC First ASL check point. Indicates the system is running in ACPI mode.
AA System is running in APIC mode.
01, 02, 03, 04, 05 Entering sleep state S1, S2, S3, S4, or S5.
10, 20, 30, 40, 50 Waking from sleep state S1, S2, S3, S4, or S5.