BIOS
C
HECKPOINTS
3-52
b. Error code (POST Error/ MRC Fatal/Warning Code
One reset switch (To trigger system reset)
Standard Checkpoint
The Standard checkpoints are the largest set of checkpoints during the BIOS pre-boot pro-
cess. The following tables describe the type of checkpoints that may occur during the
POST portion of the BIOS:
SEC Phase
Table 41: Checkpoint Range Description
S
TATUS
C
ODE
R
ANGE
D
ESCRIPTION
0x01 – 0x0B
SEC execution
0x10 – 0x2F
PEI execution up to and including memory detection
0x30 – 0x4F
PEI execution after memory detection
0x60 – 0x8F
DXE execution up to BDS
0x90 – 0xCF
BDS execution
0xE0 – 0xE8
S3 Resume (PEI)
0xF0 – 0xF8
Recovery (PEI)
Table 42: SEC Phase
S
TATUS
C
ODE
D
ESCRIPTION
0x00 Not
used
Progress Codes
0x01
Power on. Reset type detection (soft/hard).
0x02
AP initialization before microcode loading
0x03
North Bridge initialization before microcode loading
0x04
South Bridge initialization before microcode loading
0x05
OEM initialization before microcode loading
0x06 Microcode
loading
0x07
AP initialization after microcode loading
0x08
North Bridge initialization after microcode loading
0x09
South Bridge initialization after microcode loading
0x0A
OEM initialization after microcode loading
0x0B Cache
initialization