mirror of https://github.com/acidanthera/audk.git
29 lines
910 B
Plaintext
29 lines
910 B
Plaintext
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=== HOW TO USE VTF0 ===
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Add this line to your DSC [Components.IA32] or [Components.X64] section:
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UefiCpuPkg/ResetVector/Vtf0/ResetVector.inf
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Add this line to your FDF FV section:
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INF RuleOverride=RESET_VECTOR UefiCpuPkg/ResetVector/Vtf0/ResetVector.inf
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In your FDF FFS file rules sections add:
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[Rule.Common.SEC.RESET_VECTOR]
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FILE RAW = $(NAMED_GUID) {
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RAW BIN |.bin
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}
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=== VTF0 Boot Flow ===
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1. Transition to IA32 flat mode
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2. Locate BFV (Boot Firmware Volume) by checking every 4kb boundary
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3. Locate SEC image
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4. X64 VTF0 transitions to X64 mode
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5. Call SEC image entry point
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== VTF0 SEC input parameters ==
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All inputs to SEC image are register based:
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EAX/RAX - Initial value of the EAX register (BIST: Built-in Self Test)
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DI - 'BP': boot-strap processor, or 'AP': application processor
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EBP/RBP - Pointer to the start of the Boot Firmware Volume
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