BIOS CHECKPOINTS
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
STATUS CODE
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
STATUS CODE DESCRIPTION
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
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