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audk/UefiCpuPkg/ResetVector/Vtf0
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ydong10 d499fad0b0 UefiCpuPkg VTF0: Rename README to ReadMe.txt, add nasm version 
* Rename README to ReadMe.txt
* Document that nasm 2.03 or newer is required for building VTF0

Signed-off-by: ydong10
Reviewed-by: jljusten


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12384 6f19259b-4bc3-4df7-8a09-765794883524
 		2011-09-20 01:49:52 +00:00
..
Bin UefiCpuPkg: Replace the un-necessary WBINVD instruction at the reset vector with two NOPs in VTF0. 2011-08-04 03:25:14 +00:00
Ia16 UefiCpuPkg: Replace the un-necessary WBINVD instruction at the reset vector with two NOPs in VTF0. 2011-08-04 03:25:14 +00:00
Ia32 Rename two files to follow the file naming convention. 2010-09-07 10:23:05 +00:00
Tools Update the copyright notice format 2010-04-24 12:25:26 +00:00
Build.py Update the copyright notice format 2010-04-24 12:25:26 +00:00
CommonMacros.inc Update the copyright notice format 2010-04-24 12:25:26 +00:00
DebugDisabled.asm Update the copyright notice format 2010-04-24 12:25:26 +00:00
Main.asm Update the copyright notice format 2010-04-24 12:25:26 +00:00
Port80Debug.asm Update the copyright notice format 2010-04-24 12:25:26 +00:00
PostCodes.inc Update the copyright notice format 2010-04-24 12:25:26 +00:00
ReadMe.txt UefiCpuPkg VTF0: Rename README to ReadMe.txt, add nasm version 2011-09-20 01:49:52 +00:00
ResetVectorCode.asm Rename two files to follow the file naming convention. 2010-09-07 10:23:05 +00:00
SerialDebug.asm Update the copyright notice format 2010-04-24 12:25:26 +00:00

ReadMe.txt

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=== HOW TO USE VTF0 ===

Add this line to your FDF FV section:
INF  RuleOverride=RESET_VECTOR USE = IA32 UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.inf
(For X64 SEC/PEI change IA32 to X64 => 'USE = X64')

In your FDF FFS file rules sections add:
[Rule.Common.SEC.RESET_VECTOR]
  FILE RAW = $(NAMED_GUID) {
    RAW RAW                |.raw
  }

=== VTF0 Boot Flow ===

1. Transition to IA32 flat mode
2. Locate BFV (Boot Firmware Volume) by checking every 4kb boundary
3. Locate SEC image
4. X64 VTF0 transitions to X64 mode
5. Call SEC image entry point

== VTF0 SEC input parameters ==

All inputs to SEC image are register based:
EAX/RAX - Initial value of the EAX register (BIST: Built-in Self Test)
DI      - 'BP': boot-strap processor, or 'AP': application processor
EBP/RBP - Pointer to the start of the Boot Firmware Volume

=== HOW TO BUILD VTF0 ===

Dependencies:
* Python 2.5~2.7
* Nasm 2.03 or newer

To rebuild the VTF0 binaries:
1. Change to VTF0 source dir: UefiCpuPkg/ResetVector/Vtf0
2. nasm and python should be in executable path
3. Run this command:
   python Build.py
4. Binaries output will be in UefiCpuPkg/ResetVector/Vtf0/Bin