Struct FdtManager

pub struct FdtManager<'a> {
    fdt: Option<Fdt<'a>>,
    relocated: bool,
}

Fields

fdt: Option<Fdt<'a>>

relocated: bool

Implementations

impl<'a> FdtManager<'a>

const fn new() -> Self

pub fn init(&mut self, ptr: *const u8) -> Result<(), FdtError>

pub unsafe fn set_fdt_addr(addr: usize)

Sets the FDT address.

Safety

This function modifies a static variable that holds the FDT address. Ensure that this function is called before any other FDT-related functions to avoid undefined behavior.

Arguments

• addr: The address of the FDT.

Notes

This function must be called before initializing the FDT manager. After once FdtManager is initialized, you cannot change the address.

pub fn get_fdt(&self) -> Option<&Fdt<'a>>

pub unsafe fn get_mut_manager() -> &'static mut FdtManager<'a>

Returns a mutable reference to the FdtManager. This is unsafe because it allows mutable access to a static variable. It should be used with caution to avoid data races.

Safety

This function provides mutable access to the static FdtManager instance. Ensure that no other references to the manager are active to prevent data races.

Returns

A mutable reference to the static FdtManager instance.

pub fn get_manager() -> &'static FdtManager<'a>

Returns a reference to the FdtManager.

Returns

A reference to the static FdtManager instance.

unsafe fn relocate_fdt(&mut self, ptr: *mut u8)

Relocates the FDT to a new address.

Safety

This function modifies the static FDT address and reinitializes the FdtManager. Ensure that the new address is valid and does not cause memory corruption.

Parameters

• ptr: The pointer to the new FDT address.

Panics

This function will panic if the FDT has already been relocated.

pub fn get_initramfs(&self) -> Option<MemoryArea>

Get the initramfs memory area from the device tree

This function searches for the initramfs memory region in the device tree. It looks for the initrd-start/end or linux,initrd-start/end properties in the /chosen node.

Returns

Option: If the initramfs region is found, returns Some(MemoryArea), otherwise returns None.

pub fn get_dram_memoryarea(&self) -> Option<MemoryArea>