Table 93. Dim Code Checkpoints - Intel SE7520AF2 Technical Product Specification

Error Reporting and Handling
Diagnostic LED
Decoder
Check
G=Green, R=Red,
point
A=Amber
Hi
EB A R A
EF A A A
F0 R R R
F1 R R R
F2
R R A
F3 R R A
F5 R A R
FA
A R A
FB
A R A
F4 R A R
FC A A R
FD A A R
FF
A A A
7.3.1.6 DIM Code Checkpoints
The Device Initialization Manager (DIM) gets control at various times during BIOS POST to
initialize different system buses. The following table describes the main checkpoints where the
DIM module is accessed.
Checkpoint
2A Initialize different buses and perform the following functions: Reset, Detect, and
Disable (function 0); Static Device Initialization (function 1); Boot Output Device
Initialization (function 2). Function 0 disables all device nodes, PCI devices, and
PnP ISA cards. It also assigns PCI bus numbers. 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. 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); IPL Device Initialization (function 4); General Device
Initialization (function 5). Function 3 searches for and configures PCI input devices
and detects if system has standard keyboard controller. Function 4 searches for and
configures all PnP and PCI boot devices. Function 5 configures all onboard
peripherals that are set to an automatic configuration and configures all remaining
PnP and PCI devices.
204
Low
G Disable ATAPI hardware. Jump back to checkpoint E9.
G Read error occurred on media. Jump back to checkpoint EB.
R Search for pre-defined recovery file name in root directory.
A Recovery file not found.
Start reading FAT table and analyze FAT to find the clusters occupied by the
R
recovery file.
A Start reading the recovery file cluster by cluster.
A Disable L1 cache.
Check the validity of the recovery file configuration to the current configuration
R
of the flash part.
Make flash write enabled through chipset and OEM specific method. Detect
A proper flash part. Verify that the found flash part size equals the recovery file
size.
R The recovery file size does not equal the found flash part size.
R Erase the flash part.
A Program the flash part.
The flash has been updated successfully. Make flash write disabled. Disable
A ATAPI hardware. Restore CPUID value back into register. Give control to F000
ROM at F000:FFF0h.

Table 93. DIM Code Checkpoints

Description
Intel order number C77866-003
Intel® Server Board SE7520AF2 TPS
Description
Revision 1.2