Chapter 4 151Post CodesThese tables describe the POST codes and descriptions during the POST.Post Code RangeSEC Phase POST Code TablePEI Phase POST Code Table:Phase POST Code RangeSEC 0x01 - 0x0FPEI 0x70 - 0x9FDXE 0x40 - 0x6FBDS 0x10 - 0x3FSMM 0xA0 - 0xBFS3 0xC0 - 0xCFASL 0x51 – 0x550xE1 – 0xE4PostBDS 0xF9 – 0xFEReserved 0xD8 – 0xE00xE5 – 0xE8Functionality Name (Include\PostCode.h) Phase PostCode DescriptionSEC_SYSTEM_POWER_ON SEC 1 CPU power on and switch toProtected modeSEC_BEFORE_MICROCODE_PATCH SEC 2 Patching CPU microcodeSEC_AFTER_MICROCODE_PATCH SEC 3 Setup Cache as RAMSEC_SETUP_CAR_OK SEC 7 Cache as RAM testSEC_GO_TO_SECSTARTUP SEC 9 Setup BIOS ROM cacheSEC_GO_TO_PEICORE SEC 0A Enter Boot Firmware VolumeFunctionality Name (Include\PostCode.h) Phase PostCode DescriptionPEI_SIO_INIT PEI 70 Super I/O InitializationPEI_CPU_REG_INIT PEI 71 CPU Early InitializationPEI_CPU_AP_INIT PEI 72 Multi-processor Early InitialPEI_CPU_HT_RESET PEI 73 HyperTransport InitializationPEI_PCIE_MMIO_INIT PEI 74 PCIE MMIO BAR InitializationPEI_NB_REG_INIT PEI 75 North Bridge Early InitializationPEI_SB_REG_INIT PEI 76 South Bridge Early InitializationPEI_PCIE_TRAINING PEI 77 PCIE TrainingPEI_TPM_INIT PEI 78 TPM InitializationPEI_SMBUS_INIT PEI 79 SMBUS Early InitializationPEI_PROGRAM_CLOCK_GEN PEI 7A Clock Generator InitializationPEI_MEMORY_INIT PEI 7E Memory Initial for Normal boot.PEI_MEMORY_INIT_FOR_CRISIS PEI 7F Memory Initial for Crisis RecoveryPEI_MEMORY_INSTALL PEI 80 Simple Memory testPEI_SWITCH_STACK PEI 82 Start to use Memory
