Memory:
DEBUG_BIOS equ 1 (Chipset\Alviso\MemoryInitAsm\IA32\IMEMORY.INC)
Code | Description |
|
|
0x29 | Perform JEDEC memory initialization for all memory rows |
|
|
0x30 | Perform steps required after memory init |
|
|
0x31 Prog | ram DRAM throttling and throttling event registers |
|
|
0x32 | Setup DRAM control register for normal operation and enable |
|
|
0x33 | Enable RCOMP |
|
|
0x34 | Clear DRAM initialization bit in the SB |
|
|
0x35 | Initialization Sequence Completed, program graphic clocks |
|
|
0x43 | Program Thermal Throttling |
|
|
|
| BDS & Specific action: |
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 | Ke | yboard reset |
|
|
|
0x91 |
| USB Keyboard disable |
|
|
|
0x92 | Ke | yboard detection |
|
|
|
0x93 |
| Report that the usb keyboard is being enabled |
|
|
|
0x94 |
| Clear the keyboard buffer |
|
|
|
0x95 | Ini | t Keyboard |
|
|
|
0x98 | Mou | se reset |
|
|
|
0x99 | Mou | se 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 |
|
|
|
134 | Chapter 4 |
