mu_pi 7.0.0

Platform Initialization (PI) Specification definitions and support code in Rust.
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//! Firmware Volume (FV) Definitions and Support Code
//!
//! Based on the values defined in the UEFI Platform Initialization (PI) Specification V1.8A 3.1 Firmware Storage
//! Code Definitions.
//!
//! ## License
//!
//! Copyright (C) Microsoft Corporation. All rights reserved.
//!
//! SPDX-License-Identifier: BSD-2-Clause-Patent
//!

pub mod attributes;
pub mod file;
use r_efi::efi;

pub type EfiFvFileType = u8;

pub const FFS_REVISION: u8 = 2;
pub const FFS_V2_MAX_FILE_SIZE: usize = 0x1000000;

/// Firmware Volume Write Policy bit definitions
/// Note: Typically named `EFI_FV_*` in EDK II code.
mod raw {
    pub(super) mod write_policy {
        pub const UNRELIABLE_WRITE: u32 = 0x00000000;
        pub const RELIABLE_WRITE: u32 = 0x00000001;
    }
}

#[repr(u32)]
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum WritePolicy {
    UnreliableWrite = raw::write_policy::UNRELIABLE_WRITE,
    ReliableWrite = raw::write_policy::RELIABLE_WRITE,
}

/// EFI_FIRMWARE_VOLUME_HEADER
#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub struct Header {
    pub zero_vector: [u8; 16],
    pub file_system_guid: efi::Guid,
    pub fv_length: u64,
    pub signature: u32,
    pub attributes: u32,
    pub header_length: u16,
    pub checksum: u16,
    pub ext_header_offset: u16,
    pub reserved: u8,
    pub revision: u8,
    pub block_map: [BlockMapEntry; 0],
}

#[repr(C)]
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct BlockMapEntry {
    pub num_blocks: u32,
    pub length: u32,
}

/// EFI_FIRMWARE_VOLUME_EXT_HEADER
#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub struct ExtHeader {
    pub fv_name: efi::Guid,
    pub ext_header_size: u32,
}