CapsuleX64

Index: 0405 | Size: 23,328 bytes | Phase: PEI | Format: PE32+ (x64)

Overview

X64-specific capsule processing PEIM that handles capsule integrity validation, descriptor relocation, and data coalescing during the PEI phase. Implements a page fault handler for on-demand page table allocation, X64 exception handling with full CPU context dumps, APIC identification, PE/COFF image lookup, and debug output via serial port.

Key Functions

• PageFaultHandler -- On-demand page table allocator for long-mode paging
• ExceptionHandler -- X64 exception handler with CRx/DRx/MSR register dump
• ValidateCapsuleIntegrity -- Capsule integrity verification across scatter-gather descriptors
• RelocateCapsuleDescriptors -- Relocates capsule descriptors from temporary RAM to permanent memory
• CapsuleCoalesce -- Coalesces fragmented capsule data into a contiguous buffer
• DebugSerialPrint -- Debug output via serial port
• ApicId -- Local APIC ID retrieval
• PeCoffLookup -- PE/COFF image entry point and relocation lookup
• PageTableSetup -- Page table manipulation for capsule address space

Dependencies

• EFI_PEI_CAPSULLE_PPI -- Capsule services PPI
• EFI_PEI_SERVICES -- PEI service table
• X64 page tables (long-mode paging)
• Serial port for debug output

Platform

Intel Purley (Skylake-SP Xeon), HR650X
Source: MdeModulePkg/Universal/CapsulePei/X64/