Enum BootPath

pub enum BootPath {
    EfiHandover64 {
        entry: u64,
    },
    ProtectedMode32 {
        entry: u32,
    },
}

Boot protocol decision logic

Based on GRUB bootloader approach:

• EFI handover protocol when handover_offset != 0 → Bootloader does NOT call ExitBootServices (kernel does it)
• 32-bit protected mode fallback otherwise → Bootloader MUST call ExitBootServices before jumping

Variants

EfiHandover64

EFI Handover Protocol Entry: kernel_addr + handover_offset + 512 Boot services MUST be active (kernel will exit them)

Fields

entry: u64

ProtectedMode32

Legacy: 32-bit protected mode fallback Boot services MUST be exited before calling

Fields

entry: u32

Implementations

impl BootPath

pub fn choose( handover_offset: Option<u32>, startup_64: u64, protected_mode_entry: u32, in_long_mode: bool, ) -> Self

Determine boot path to use

GRUB uses handover_offset when available, regardless of kernel version. This works for kernels 3.x through 6.0 (handover removed in 6.1).

pub unsafe fn execute( self, boot_params: u64, image_handle: *mut (), system_table: *mut (), ) -> !

Execute the handoff (does not return)

GRUB approach: Cast entry to function pointer and call directly. Compiler handles System V → Win64 ABI conversion automatically!

Trait Implementations

impl Clone for BootPath

fn clone(&self) -> BootPath

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BootPath

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for BootPath