Acpi Runtime Checkpoints; Post Progress Fifo (Professional / Advanced Only); Memory Error Codes; Table 79: Acpi Runtime Checkpoints - Intel SE7520JR2 Technical Manual

Intel® Server Board SE7520JR2
6.5.7

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:
Checkpoint
AC
AA
01, 02, 03, 04, 05
10, 20, 30, 40, 50
6.5.8

POST Progress FIFO (Professional / Advanced only)

With SE7520JR2 based platforms that utilize either the Professional or Advanced management
modules, the Sahalee BMC will maintain a RAM FIFO of the last 16 post progress codes that it
has received. Accompanying this FIFO is a timestamp that indicates when the last code was
received.
By default, the Sahalee BMC rejects duplicate codes that are received; however, the command
interface allows BIOS to explicitly indicate that the code should be stored regardless of whether
the previous code was a duplicate.
A corresponding command allows system software to be able to retrieve the contents of the
FIFO. This command can be executed via the internal and external interfaces to the Sahallee
BMC.
The POST Progress FIFO is volatile. It is cleared whenever the system loses AC power, is
powered-down (ACPI S4 or S5), or is reset.
6.5.9

Memory Error Codes

Tpoint
001h
002h
0E1h
0E2h
0E3h
0E4h
Revision 1.0

Table 79: ACPI Runtime Checkpoints

First ASL check point. Indicates the system is running in ACPI mode.
System is running in APIC mode.
Entering sleep state S1, S2, S3, S4, or S5.
Waking from sleep state S1, S2, S3, S4, or S5.

Table 80: Memory Error Codes

Description
MEM_ERR_CHANNEL_B_OFF
(DIMM mismatch forced Channel B disabled)
MEM_ERR_CK_PAIR_OFF
(Slow DIMM(s) forced clock pair disabled)
MEM_ERR_NO_DEVICE
(No memory installed)
MEM_ERR_TYPE_MISMATCH
MEM_ERR_UNSUPPORTED_DIMM
(Unsupported DIMM type)
MEM_ERR_CHL_MISMATCH
C78844-002
Error Reporting and Handling
Description
173