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    Metadata details:
    filename: nonvolatile_storage.rs
    path of file: ./repos/tock/boards/components/src
    
    the code of the file until where you have to start completion: // Licensed under the Apache License, Version 2.0 or the MIT License.
// SPDX-License-Identifier: Apache-2.0 OR MIT
// Copyright Tock Contributors 2022.

//! Component for non-volatile storage Drivers.
//!
//! This provides one component, NonvolatileStorageComponent, which provides
//! a system call interface to non-volatile storage.
//!
//! Usage
//! -----
//! ```rust
//! let nonvolatile_storage = components::nonvolatile_storage::NonvolatileStorageComponent::new(
//!     board_kernel,
//!     &sam4l::flashcalw::FLASH_CONTROLLER,
//!     0x60000,
//!     0x20000,
//!     core::ptr::addr_of!(_sstorage) as usize,
//!     core::ptr::addr_of!(_estorage) as usize,
//! )
//! .finalize(components::nonvolatile_storage_component_static!(
//!     sam4l::flashcalw::FLASHCALW
//! ));
//! ``
    
    fn finalize(self, static_buffer: Self::StaticInput) -> Self::Output {
        let grant_cap = create_capability!(capabilities::MemoryAllocationCapability);

        let buffer = static_buffer
            .3
            .write([0; capsules_extra::nonvolatile_storage_driver::BUF_LEN]);

        let flash_pagebuffer = static_buffer
            .0
            .write(<F as hil::flash::Flash>::Page::default());

        let nv_to_page = static_buffer
            .1
            .write(NonvolatileToPages::new(self.flash, flash_pagebuffer));
        hil::flash::HasClient::set_client(self.flash, nv_to_page);

        let nonvolatile_storage = static_buffer.2.write(NonvolatileStorage::new(
            nv_to_page,
            self.board_kernel.create_grant(self.driver_num, &grant_cap),
            self.userspace_start, // Start address for userspace accessible region
            self.userspace_length, // Length of userspace accessible region
            self.kernel_start,    // Start address of kernel region
            self.kernel_length,   // Length of kernel region
            buffer,
        ));
        hil::nonvolatile_storage::NonvolatileStorage::set_client(nv_to_page, nonvolatile_storage);
        nonvolatile_storage
    }