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#![no_std]
extern crate x86_64;
extern crate arrayvec;
use x86_64::PhysAddr;
use arrayvec::ArrayVec;
#[derive(Debug, Clone)]
pub struct BootInfo {
pub memory_map: ArrayVec<[MemoryRegion; 32]>,
}
impl BootInfo {
pub fn new() -> Self {
BootInfo {
memory_map: ArrayVec::new(),
}
}
pub fn sort_memory_map(&mut self) {
self.memory_map.sort_unstable_by_key(|r| r.start_addr);
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct MemoryRegion {
pub start_addr: PhysAddr,
pub len: u64,
pub region_type: MemoryRegionType
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum MemoryRegionType {
Usable,
InUse,
Reserved,
AcpiReclaimable,
AcpiNvs,
BadMemory,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(C)]
pub struct E820MemoryRegion {
pub start_addr: u64,
pub len: u64,
pub region_type: u32,
pub acpi_extended_attributes: u32,
}
impl From<E820MemoryRegion> for MemoryRegion {
fn from(region: E820MemoryRegion) -> MemoryRegion {
let region_type = match region.region_type {
1 => MemoryRegionType::Usable,
2 => MemoryRegionType::Reserved,
3 => MemoryRegionType::AcpiReclaimable,
4 => MemoryRegionType::AcpiNvs,
5 => MemoryRegionType::BadMemory,
t => panic!("invalid region type {}", t),
};
MemoryRegion {
start_addr: PhysAddr::new(region.start_addr),
len: region.len,
region_type
}
}
}