Functionality Name (Include\

Phase

Post

Description

PostCode.h)

Code

 

 

 

 

 

 

BDS_START_ISA_ACPI_CONTROLLER

BDS

20

SIO controller initialization

 

 

 

 

BDS_START_ISA_BUS

BDS

21

ISA BUS driver initialization

 

 

 

 

BDS_START_ISA_FDD

BDS

22

Floppy device initialization

 

 

 

 

BDS_START_ISA_SEIRAL

BDS

23

Serial device initialization

 

 

 

 

BDS_START_IDE_BUS

BDS

24

IDE device initialization

 

 

 

 

BDS_START_AHCI_BUS

BDS

25

AHCI device initialization

 

 

 

 

BDS_CONNECT_LEGACY_ROM

BDS

26

Dispatch option ROMs

 

 

 

 

BDS_ENUMERATE_ALL_BOOT_OPTION

BDS

27

Get boot device information

 

 

 

 

BDS_END_OF_BOOT_SELECTION

BDS

28

End of boot selection

 

 

 

 

BDS_ENTER_SETUP

BDS

29

Enter Setup Menu

 

 

 

 

BDS_ENTER_BOOT_MANAGER

BDS

2A

Enter Boot manager

 

 

 

 

BDS_BOOT_DEVICE_SELECT

BDS

2B

Try to boot system to OS

 

 

 

 

BDS_EFI64_SHADOW_ALL_LEGACY_RO

BDS

2C

Shadow Misc Option ROM

M

 

 

 

 

 

 

 

BDS_ACPI_S3SAVE

BDS

2D

Save S3 resume required data in

 

 

 

RAM

 

 

 

 

BDS_READY_TO_BOOT_EVENT

BDS

2E

Last Chipset initial before boot to

 

 

 

OS

 

 

 

 

BDS_GO_LEGACY_BOOT

BDS

2F

Start to boot Legacy OS

 

 

 

 

BDS_GO_UEFI_BOOT

BDS

30

Start to boot UEFI OS

 

 

 

 

BDS_LEGACY16_PREPARE_TO_BOOT

BDS

31

Prepare to Boot to Legacy OS

 

 

 

 

BDS_EXIT_BOOT_SERVICES

BDS

32

Send END of POST Message to

 

 

 

ME via HECI

 

 

 

 

BDS_LEGACY_BOOT_EVENT

BDS

33

Last Chipset initial before boot to

 

 

 

Legacy OS.

 

 

 

 

BDS_ENTER_LEGACY_16_BOOT

BDS

34

Ready to Boot Legacy OS.

 

 

 

 

BDS_RECOVERY_START_FLASH

BDS

35

Fast Recovery Start Flash.

 

 

 

 

PostBDS POST Code Table

 

 

 

Functionality Name (Include\

Phase

 

Post

 

 

Description

 

PostCode.h)

 

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POST_BDS_NO_BOOT_DEVICE

POST_BDS

 

F9

 

No Boot Device

 

 

 

 

 

 

 

 

 

 

POST_BDS_START_IMAGE

POST_BDS

 

FB

 

UEFI Boot Start Image

 

 

 

 

 

 

 

 

 

 

POST_BDS_ENTER_INT19

POST_BDS

 

FD

 

Legacy 16 boot entry

 

 

 

 

 

 

 

 

 

 

POST_BDS_JUMP_BOOT_SECTOR

POST_BDS

 

FE

 

Try to Boot with INT 19

 

 

 

 

 

 

 

 

 

 

S3 Functions POST Code Table

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Functionality Name (Include\ PostCode.h)

 

Phase

Post

Description

 

 

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S3_RESTORE_MEMORY_CONTROLLER

 

 

PEI

C0

Memory initial for S3

 

 

 

 

 

 

 

 

resume

 

 

 

 

 

 

 

 

S3_INSTALL_S3_MEMORY

 

 

PEI

C1

Get S3 resume required

 

 

 

 

 

 

 

 

data from memory

 

S3_SWITCH_STACK

 

 

PEI

C2

Start to use memory during

 

 

 

 

 

 

 

 

S3 resume

 

180

Chapter 4

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