Chapter 1
BIOS POST / Beep Code
1-1
BIOS POST Code
PEI_CORE_STARTED
0x10
PEI_CAR_CPU_INIT
0x11
// reserved for CPU 0x12 - 0x14
PEI_CAR_NB_INIT
0x15
// reserved for NB 0x16 - 0x18
PEI_CAR_SB_INIT
0x19
// reserved for SB 0x1A - 0x1C
PEI_MEMORY_SPD_READ
0x1D
PEI_MEMORY_PRESENCE_DETECT
0x1E
PEI_MEMORY_TIMING
0x1F
PEI_MEMORY_CONFIGURING
0x20
PEI_MEMORY_INIT
0x21
// reserved for OEM use: 0x22 - 0x2F
// reserved for AML use: 0x30
PEI_MEMORY_INSTALLED
0x31
PEI_CPU_INIT
0x32
PEI_CPU_CACHE_INIT
0x33
PEI_CPU_BSP_SELECT
0x34
PEI_CPU_AP_INIT
0x35
PEI_CPU_SMM_INIT
0x36
PEI_MEM_NB_INIT
0x37
// reserved for NB 0x38 - 0x3A
PEI_MEM_SB_INIT
0x3B
// reserved for SB 0x3C - 0x3E
// reserved for OEM use: 0x3F - 0x4E
PEI_DXE_IPL_STARTED
0x4F
//Recovery
PEI_RECOVERY_AUTO
0xF0
PEI_RECOVERY_USER
0xF1
PEI_RECOVERY_STARTED
0xF2
PEI_RECOVERY_CAPSULE_FOUND
0xF3
PEI_RECOVERY_CAPSULE_LOADED
0xF4
//S3
PEI_S3_STARTED
0xE0