BDS & Specific action:

Post Code

Description

 

 

0x00

Report the legacy boot is happening

0x12

Wake up the Aps

 

 

0x13

Initialize SMM Private Data and relocate BSP SMBASE

 

 

0x21

PC init begin at the stage1

 

 

0x27

Report every memory range do the hard ware ECC init

 

 

0x28

Report status code of every memory range

 

 

0x50

Get the root bridge handle

 

 

0x51

Notify pci bus driver starts to program the resource

 

 

0x58

Reset the host controller

 

 

0x5A

IdeBus begin initialization

 

 

0x79

Report that the remote terminal is being disabled

 

 

0x7A

Report that the remote terminal is being enabled

 

 

0x90

Keyboard reset

 

 

0x91

USB Keyboard disable

 

 

0x92

Keyboard detection

 

 

0x93

Report that the usb keyboard is being enabled

 

 

0x94

Clear the keyboard buffer

 

 

0x95

Init Keyboard

 

 

0x98

Mouse reset

 

 

0x99

Mouse disable

 

 

0x9A

Detect PS2 mouse

 

 

0x9B

Report that the mouse is being enabled

 

 

0xB8

Peripheral removable media reset(ex:IsaFloppy, USB device)

 

 

0xB9

Peripheral removable media disable

 

 

0xBB

Peripheral removable media enable

 

 

0xE4

Report Status Code here for DXE_ENTRY_POINT once it is available

 

 

0xF8

Report that ExitBootServices() has been called

 

 

0xF9

Runtime driver set virtual address map

 

 

Each PEIM entry point used in 80_PORT

 

Post Code

Description

 

 

 

 

 

 

0x00

 

 

 

0x01

PEI_EVENT_LOG

 

 

 

 

 

 

0xA1

PEI_OEM_SERVICE

 

 

 

 

 

 

0xA2

PEI_SIO_INIT

 

 

 

 

 

 

0xA3

PEI_MONO_STATUS_CODE

 

 

 

 

 

 

0xA4

PEI_CPU_IO_PCI_CFG

 

 

 

 

 

 

0x06

PEI_CPU_IO

 

 

 

 

 

 

0x07

PEI_PCI_CFG

 

 

 

 

 

 

0xA5

PEI_CPU_PEIM

 

 

 

 

 

 

0xA6

PEI_PLATFORM_STAGE1

 

 

 

 

 

 

0xA7

PEI_VARIABLE

 

 

 

 

 

 

 

 

 

Chapter 4

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Image 182
Acer 5538 manual BDS & Specific action, Each Peim entry point used in 80PORT