UefiCpuPkg VTF0: Rename README to ReadMe.txt, add nasm version

[mirror_edk2.git] / UefiCpuPkg / ResetVector / Vtf0 / README

diff --git a/UefiCpuPkg/ResetVector/Vtf0/README b/UefiCpuPkg/ResetVector/Vtf0/README
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--- a/UefiCpuPkg/ResetVector/Vtf0/README
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-\r
-=== HOW TO USE VTF0 ===\r
-\r
-Add this line to your FDF FV section:\r
-INF  RuleOverride=RESET_VECTOR USE = IA32 UefiCpuPkg/ResetVector/Vtf0/Bin/ResetVector.inf\r
-(For X64 SEC/PEI change IA32 to X64 => 'USE = X64')\r
-\r
-In your FDF FFS file rules sections add:\r
-[Rule.Common.SEC.RESET_VECTOR]\r
-  FILE RAW = $(NAMED_GUID) {\r
-    RAW RAW                |.raw\r
-  }\r
-\r
-=== VTF0 Boot Flow ===\r
-\r
-1. Transition to IA32 flat mode\r
-2. Locate BFV (Boot Firmware Volume) by checking every 4kb boundary\r
-3. Locate SEC image\r
-4. X64 VTF0 transitions to X64 mode\r
-5. Call SEC image entry point\r
-\r
-== VTF0 SEC input parameters ==\r
-\r
-All inputs to SEC image are register based:\r
-EAX/RAX - Initial value of the EAX register (BIST: Built-in Self Test)\r
-DI      - 'BP': boot-strap processor, or 'AP': application processor\r
-EBP/RBP - Pointer to the start of the Boot Firmware Volume\r
-\r
-=== HOW TO BUILD VTF0 ===\r
-\r
-Dependencies:\r
-* Python 2.5~2.7\r
-* Nasm with x86-64 support\r
-\r
-To rebuild the VTF0 binaries:\r
-1. Change to VTF0 source dir: UefiCpuPkg/ResetVector/Vtf0\r
-2. nasm and python should be in executable path\r
-3. Run this command:\r
-   python Build.py\r
-4. Binaries output will be in UefiCpuPkg/ResetVector/Vtf0/Bin\r
-\r