sdk/banjo/fuchsia.hardware.nandinfo/nand_info.fidl

// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.hardware.nandinfo;

// Matches the value of ZBI_PARTITION_GUID_LEN.
const NAND_GUID_LEN uint32 = 16;

type NandClass = strict enum : uint32 {
    UNKNOWN = 0; // Unknown device.
    PARTMAP = 1; // NAND device contains multiple partitions.
    FTL = 2; // NAND device is a FTL partition.
    BBS = 3; // NAND device is a bad block skip partition.
    TEST = 4; // Test device.
    /// NAND device contains an Intel flash descriptor.
    INTEL_FLASH_DESCRIPTOR = 5;
};

type NandInfo = struct {
    page_size uint32; // Read/write unit size, in bytes.
    pages_per_block uint32; // Erase block size, in pages.
    num_blocks uint32; // Device size, in erase blocks.
    ecc_bits uint32; // Number of ECC bits (correctable bit flips),
    // per correction chunk.
    oob_size uint32; // Available out of band bytes per page.
    nand_class NandClass; // The device purpose.
    partition_guid array<uint8, NAND_GUID_LEN>; // Partition type GUID from partition map.
};