// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2018-2019, Intel Corporation. */

#include <linux/unaligned.h>
#include <linux/crc32.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pldmfw.h>
#include <linux/slab.h>
#include <linux/uuid.h>

#include "pldmfw_private.h"

/* Internal structure used to store details about the PLDM image file as it is
 * being validated and processed.
 */
struct pldmfw_priv {
        struct pldmfw *context;
        const struct firmware *fw;

        /* current offset of firmware image */
        size_t offset;

        struct list_head records;
        struct list_head components;

        /* PLDM Firmware Package Header */
        const struct __pldm_header *header;
        u16 total_header_size;

        /* length of the component bitmap */
        u16 component_bitmap_len;
        u16 bitmap_size;

        /* Start of the component image information */
        u16 component_count;
        const u8 *component_start;

        /* Start pf the firmware device id records */
        const u8 *record_start;
        u8 record_count;

        /* The CRC at the end of the package header */
        u32 header_crc;

        struct pldmfw_record *matching_record;
};

/**
 * pldm_check_fw_space - Verify that the firmware image has space left
 * @data: pointer to private data
 * @offset: offset to start from
 * @length: length to check for
 *
 * Verify that the firmware data can hold a chunk of bytes with the specified
 * offset and length.
 *
 * Returns: zero on success, or -EFAULT if the image does not have enough
 * space left to fit the expected length.
 */
static int
pldm_check_fw_space(struct pldmfw_priv *data, size_t offset, size_t length)
{
        size_t expected_size = offset + length;
        struct device *dev = data->context->dev;

        if (data->fw->size < expected_size) {
                dev_dbg(dev, "Firmware file size smaller than expected. Got %zu bytes, needed %zu bytes\n",
                        data->fw->size, expected_size);
                return -EFAULT;
        }

        return 0;
}

/**
 * pldm_move_fw_offset - Move the current firmware offset forward
 * @data: pointer to private data
 * @bytes_to_move: number of bytes to move the offset forward by
 *
 * Check that there is enough space past the current offset, and then move the
 * offset forward by this amount.
 *
 * Returns: zero on success, or -EFAULT if the image is too small to fit the
 * expected length.
 */
static int
pldm_move_fw_offset(struct pldmfw_priv *data, size_t bytes_to_move)
{
        int err;

        err = pldm_check_fw_space(data, data->offset, bytes_to_move);
        if (err)
                return err;

        data->offset += bytes_to_move;

        return 0;
}

/**
 * pldm_parse_header - Validate and extract details about the PLDM header
 * @data: pointer to private data
 *
 * Performs initial basic verification of the PLDM image, up to the first
 * firmware record.
 *
 * This includes the following checks and extractions
 *
 *   * Verify that the UUID at the start of the header matches the expected
 *     value as defined in the DSP0267 PLDM specification
 *   * Check that the revision is 0x01
 *   * Extract the total header_size and verify that the image is large enough
 *     to contain at least the length of this header
 *   * Extract the size of the component bitmap length
 *   * Extract a pointer to the start of the record area
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int pldm_parse_header(struct pldmfw_priv *data)
{
        const struct __pldmfw_record_area *record_area;
        struct device *dev = data->context->dev;
        const struct __pldm_header *header;
        size_t header_size;
        int err;

        err = pldm_move_fw_offset(data, sizeof(*header));
        if (err)
                return err;

        header = (const struct __pldm_header *)data->fw->data;
        data->header = header;

        if (!uuid_equal(&header->id, &pldm_firmware_header_id)) {
                dev_dbg(dev, "Invalid package header identifier. Expected UUID %pUB, but got %pUB\n",
                        &pldm_firmware_header_id, &header->id);
                return -EINVAL;
        }

        if (header->revision != PACKAGE_HEADER_FORMAT_REVISION) {
                dev_dbg(dev, "Invalid package header revision. Expected revision %u but got %u\n",
                        PACKAGE_HEADER_FORMAT_REVISION, header->revision);
                return -EOPNOTSUPP;
        }

        data->total_header_size = get_unaligned_le16(&header->size);
        header_size = data->total_header_size - sizeof(*header);

        err = pldm_check_fw_space(data, data->offset, header_size);
        if (err)
                return err;

        data->component_bitmap_len =
                get_unaligned_le16(&header->component_bitmap_len);

        if (data->component_bitmap_len % 8 != 0) {
                dev_dbg(dev, "Invalid component bitmap length. The length is %u, which is not a multiple of 8\n",
                        data->component_bitmap_len);
                return -EINVAL;
        }

        data->bitmap_size = data->component_bitmap_len / 8;

        err = pldm_move_fw_offset(data, header->version_len);
        if (err)
                return err;

        /* extract a pointer to the record area, which just follows the main
         * PLDM header data.
         */
        record_area = (const struct __pldmfw_record_area *)(data->fw->data +
                                                         data->offset);

        err = pldm_move_fw_offset(data, sizeof(*record_area));
        if (err)
                return err;

        data->record_count = record_area->record_count;
        data->record_start = record_area->records;

        return 0;
}

/**
 * pldm_check_desc_tlv_len - Check that the length matches expectation
 * @data: pointer to image details
 * @type: the descriptor type
 * @size: the length from the descriptor header
 *
 * If the descriptor type is one of the documented descriptor types according
 * to the standard, verify that the provided length matches.
 *
 * If the type is not recognized or is VENDOR_DEFINED, return zero.
 *
 * Returns: zero on success, or -EINVAL if the specified size of a standard
 * TLV does not match the expected value defined for that TLV.
 */
static int
pldm_check_desc_tlv_len(struct pldmfw_priv *data, u16 type, u16 size)
{
        struct device *dev = data->context->dev;
        u16 expected_size;

        switch (type) {
        case PLDM_DESC_ID_PCI_VENDOR_ID:
        case PLDM_DESC_ID_PCI_DEVICE_ID:
        case PLDM_DESC_ID_PCI_SUBVENDOR_ID:
        case PLDM_DESC_ID_PCI_SUBDEV_ID:
                expected_size = 2;
                break;
        case PLDM_DESC_ID_PCI_REVISION_ID:
                expected_size = 1;
                break;
        case PLDM_DESC_ID_PNP_VENDOR_ID:
                expected_size = 3;
                break;
        case PLDM_DESC_ID_IANA_ENTERPRISE_ID:
        case PLDM_DESC_ID_ACPI_VENDOR_ID:
        case PLDM_DESC_ID_PNP_PRODUCT_ID:
        case PLDM_DESC_ID_ACPI_PRODUCT_ID:
                expected_size = 4;
                break;
        case PLDM_DESC_ID_UUID:
                expected_size = 16;
                break;
        case PLDM_DESC_ID_VENDOR_DEFINED:
                return 0;
        default:
                /* Do not report an error on an unexpected TLV */
                dev_dbg(dev, "Found unrecognized TLV type 0x%04x\n", type);
                return 0;
        }

        if (size != expected_size) {
                dev_dbg(dev, "Found TLV type 0x%04x with unexpected length. Got %u bytes, but expected %u bytes\n",
                        type, size, expected_size);
                return -EINVAL;
        }

        return 0;
}

/**
 * pldm_parse_desc_tlvs - Check and skip past a number of TLVs
 * @data: pointer to private data
 * @record: pointer to the record this TLV belongs too
 * @desc_count: descriptor count
 *
 * From the current offset, read and extract the descriptor TLVs, updating the
 * current offset each time.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int
pldm_parse_desc_tlvs(struct pldmfw_priv *data, struct pldmfw_record *record, u8 desc_count)
{
        const struct __pldmfw_desc_tlv *__desc;
        const u8 *desc_start;
        u8 i;

        desc_start = data->fw->data + data->offset;

        pldm_for_each_desc_tlv(i, __desc, desc_start, desc_count) {
                struct pldmfw_desc_tlv *desc;
                int err;
                u16 type, size;

                err = pldm_move_fw_offset(data, sizeof(*__desc));
                if (err)
                        return err;

                type = get_unaligned_le16(&__desc->type);

                /* According to DSP0267, this only includes the data field */
                size = get_unaligned_le16(&__desc->size);

                err = pldm_check_desc_tlv_len(data, type, size);
                if (err)
                        return err;

                /* check that we have space and move the offset forward */
                err = pldm_move_fw_offset(data, size);
                if (err)
                        return err;

                desc = kzalloc_obj(*desc);
                if (!desc)
                        return -ENOMEM;

                desc->type = type;
                desc->size = size;
                desc->data = __desc->data;

                list_add_tail(&desc->entry, &record->descs);
        }

        return 0;
}

/**
 * pldm_parse_one_record - Verify size of one PLDM record
 * @data: pointer to image details
 * @__record: pointer to the record to check
 *
 * This function checks that the record size does not exceed either the size
 * of the firmware file or the total length specified in the header section.
 *
 * It also verifies that the recorded length of the start of the record
 * matches the size calculated by adding the static structure length, the
 * component bitmap length, the version string length, the length of all
 * descriptor TLVs, and the length of the package data.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int
pldm_parse_one_record(struct pldmfw_priv *data,
                      const struct __pldmfw_record_info *__record)
{
        struct pldmfw_record *record;
        size_t measured_length;
        int err;
        const u8 *bitmap_ptr;
        u16 record_len;
        int i;

        /* Make a copy and insert it into the record list */
        record = kzalloc_obj(*record);
        if (!record)
                return -ENOMEM;

        INIT_LIST_HEAD(&record->descs);
        list_add_tail(&record->entry, &data->records);

        /* Then check that we have space and move the offset */
        err = pldm_move_fw_offset(data, sizeof(*__record));
        if (err)
                return err;

        record_len = get_unaligned_le16(&__record->record_len);
        record->package_data_len = get_unaligned_le16(&__record->package_data_len);
        record->version_len = __record->version_len;
        record->version_type = __record->version_type;

        bitmap_ptr = data->fw->data + data->offset;

        /* check that we have space for the component bitmap length */
        err = pldm_move_fw_offset(data, data->bitmap_size);
        if (err)
                return err;

        record->component_bitmap_len = data->component_bitmap_len;
        record->component_bitmap = bitmap_zalloc(record->component_bitmap_len,
                                                 GFP_KERNEL);
        if (!record->component_bitmap)
                return -ENOMEM;

        for (i = 0; i < data->bitmap_size; i++)
                bitmap_set_value8(record->component_bitmap, bitmap_ptr[i], i * 8);

        record->version_string = data->fw->data + data->offset;

        err = pldm_move_fw_offset(data, record->version_len);
        if (err)
                return err;

        /* Scan through the descriptor TLVs and find the end */
        err = pldm_parse_desc_tlvs(data, record, __record->descriptor_count);
        if (err)
                return err;

        record->package_data = data->fw->data + data->offset;

        err = pldm_move_fw_offset(data, record->package_data_len);
        if (err)
                return err;

        measured_length = data->offset - ((const u8 *)__record - data->fw->data);
        if (measured_length != record_len) {
                dev_dbg(data->context->dev, "Unexpected record length. Measured record length is %zu bytes, expected length is %u bytes\n",
                        measured_length, record_len);
                return -EFAULT;
        }

        return 0;
}

/**
 * pldm_parse_records - Locate the start of the component area
 * @data: pointer to private data
 *
 * Extract the record count, and loop through each record, searching for the
 * component area.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int pldm_parse_records(struct pldmfw_priv *data)
{
        const struct __pldmfw_component_area *component_area;
        const struct __pldmfw_record_info *record;
        int err;
        u8 i;

        pldm_for_each_record(i, record, data->record_start, data->record_count) {
                err = pldm_parse_one_record(data, record);
                if (err)
                        return err;
        }

        /* Extract a pointer to the component area, which just follows the
         * PLDM device record data.
         */
        component_area = (const struct __pldmfw_component_area *)(data->fw->data + data->offset);

        err = pldm_move_fw_offset(data, sizeof(*component_area));
        if (err)
                return err;

        data->component_count =
                get_unaligned_le16(&component_area->component_image_count);
        data->component_start = component_area->components;

        return 0;
}

/**
 * pldm_parse_components - Locate the CRC header checksum
 * @data: pointer to private data
 *
 * Extract the component count, and find the pointer to the component area.
 * Scan through each component searching for the end, which should point to
 * the package header checksum.
 *
 * Extract the package header CRC and save it for verification.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int pldm_parse_components(struct pldmfw_priv *data)
{
        const struct __pldmfw_component_info *__component;
        struct device *dev = data->context->dev;
        const u8 *header_crc_ptr;
        int err;
        u8 i;

        pldm_for_each_component(i, __component, data->component_start, data->component_count) {
                struct pldmfw_component *component;
                u32 offset, size;

                err = pldm_move_fw_offset(data, sizeof(*__component));
                if (err)
                        return err;

                err = pldm_move_fw_offset(data, __component->version_len);
                if (err)
                        return err;

                offset = get_unaligned_le32(&__component->location_offset);
                size = get_unaligned_le32(&__component->size);

                err = pldm_check_fw_space(data, offset, size);
                if (err)
                        return err;

                component = kzalloc_obj(*component);
                if (!component)
                        return -ENOMEM;

                component->index = i;
                component->classification = get_unaligned_le16(&__component->classification);
                component->identifier = get_unaligned_le16(&__component->identifier);
                component->comparison_stamp = get_unaligned_le32(&__component->comparison_stamp);
                component->options = get_unaligned_le16(&__component->options);
                component->activation_method = get_unaligned_le16(&__component->activation_method);
                component->version_type = __component->version_type;
                component->version_len = __component->version_len;
                component->version_string = __component->version_string;
                component->component_data = data->fw->data + offset;
                component->component_size = size;

                if (data->context->mode == PLDMFW_UPDATE_MODE_SINGLE_COMPONENT &&
                    data->context->component_identifier != component->identifier)
                        continue;

                list_add_tail(&component->entry, &data->components);
        }

        if (data->context->mode == PLDMFW_UPDATE_MODE_SINGLE_COMPONENT &&
            list_empty(&data->components))
                return -ENOENT;

        header_crc_ptr = data->fw->data + data->offset;

        err = pldm_move_fw_offset(data, sizeof(data->header_crc));
        if (err)
                return err;

        /* Make sure that we reached the expected offset */
        if (data->offset != data->total_header_size) {
                dev_dbg(dev, "Invalid firmware header size. Expected %u but got %zu\n",
                        data->total_header_size, data->offset);
                return -EFAULT;
        }

        data->header_crc = get_unaligned_le32(header_crc_ptr);

        return 0;
}

/**
 * pldm_verify_header_crc - Verify that the CRC in the header matches
 * @data: pointer to private data
 *
 * Calculates the 32-bit CRC using the standard IEEE 802.3 CRC polynomial and
 * compares it to the value stored in the header.
 *
 * Returns: zero on success if the CRC matches, or -EBADMSG on an invalid CRC.
 */
static int pldm_verify_header_crc(struct pldmfw_priv *data)
{
        struct device *dev = data->context->dev;
        u32 calculated_crc;
        size_t length;

        /* Calculate the 32-bit CRC of the header header contents up to but
         * not including the checksum. Note that the Linux crc32_le function
         * does not perform an expected final XOR.
         */
        length = data->offset - sizeof(data->header_crc);
        calculated_crc = crc32_le(~0, data->fw->data, length) ^ ~0;

        if (calculated_crc != data->header_crc) {
                dev_dbg(dev, "Invalid CRC in firmware header. Got 0x%08x but expected 0x%08x\n",
                        calculated_crc, data->header_crc);
                return -EBADMSG;
        }

        return 0;
}

/**
 * pldmfw_free_priv - Free memory allocated while parsing the PLDM image
 * @data: pointer to the PLDM data structure
 *
 * Loops through and clears all allocated memory associated with each
 * allocated descriptor, record, and component.
 */
static void pldmfw_free_priv(struct pldmfw_priv *data)
{
        struct pldmfw_component *component, *c_safe;
        struct pldmfw_record *record, *r_safe;
        struct pldmfw_desc_tlv *desc, *d_safe;

        list_for_each_entry_safe(component, c_safe, &data->components, entry) {
                list_del(&component->entry);
                kfree(component);
        }

        list_for_each_entry_safe(record, r_safe, &data->records, entry) {
                list_for_each_entry_safe(desc, d_safe, &record->descs, entry) {
                        list_del(&desc->entry);
                        kfree(desc);
                }

                if (record->component_bitmap) {
                        bitmap_free(record->component_bitmap);
                        record->component_bitmap = NULL;
                }

                list_del(&record->entry);
                kfree(record);
        }
}

/**
 * pldm_parse_image - parse and extract details from PLDM image
 * @data: pointer to private data
 *
 * Verify that the firmware file contains valid data for a PLDM firmware
 * file. Extract useful pointers and data from the firmware file and store
 * them in the data structure.
 *
 * The PLDM firmware file format is defined in DMTF DSP0267 1.0.0. Care
 * should be taken to use get_unaligned_le* when accessing data from the
 * pointers in data.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int pldm_parse_image(struct pldmfw_priv *data)
{
        int err;

        if (WARN_ON(!(data->context->dev && data->fw->data && data->fw->size)))
                return -EINVAL;

        err = pldm_parse_header(data);
        if (err)
                return err;

        err = pldm_parse_records(data);
        if (err)
                return err;

        err = pldm_parse_components(data);
        if (err)
                return err;

        return pldm_verify_header_crc(data);
}

/* these are u32 so that we can store PCI_ANY_ID */
struct pldm_pci_record_id {
        int vendor;
        int device;
        int subsystem_vendor;
        int subsystem_device;
};

/**
 * pldmfw_op_pci_match_record - Check if a PCI device matches the record
 * @context: PLDM fw update structure
 * @record: list of records extracted from the PLDM image
 *
 * Determine of the PCI device associated with this device matches the record
 * data provided.
 *
 * Searches the descriptor TLVs and extracts the relevant descriptor data into
 * a pldm_pci_record_id. This is then compared against the PCI device ID
 * information.
 *
 * Returns: true if the device matches the record, false otherwise.
 */
bool pldmfw_op_pci_match_record(struct pldmfw *context, struct pldmfw_record *record)
{
        struct pci_dev *pdev = to_pci_dev(context->dev);
        struct pldm_pci_record_id id = {
                .vendor = PCI_ANY_ID,
                .device = PCI_ANY_ID,
                .subsystem_vendor = PCI_ANY_ID,
                .subsystem_device = PCI_ANY_ID,
        };
        struct pldmfw_desc_tlv *desc;

        list_for_each_entry(desc, &record->descs, entry) {
                u16 value;
                int *ptr;

                switch (desc->type) {
                case PLDM_DESC_ID_PCI_VENDOR_ID:
                        ptr = &id.vendor;
                        break;
                case PLDM_DESC_ID_PCI_DEVICE_ID:
                        ptr = &id.device;
                        break;
                case PLDM_DESC_ID_PCI_SUBVENDOR_ID:
                        ptr = &id.subsystem_vendor;
                        break;
                case PLDM_DESC_ID_PCI_SUBDEV_ID:
                        ptr = &id.subsystem_device;
                        break;
                default:
                        /* Skip unrelated TLVs */
                        continue;
                }

                value = get_unaligned_le16(desc->data);
                /* A value of zero for one of the descriptors is sometimes
                 * used when the record should ignore this field when matching
                 * device. For example if the record applies to any subsystem
                 * device or vendor.
                 */
                if (value)
                        *ptr = (int)value;
                else
                        *ptr = PCI_ANY_ID;
        }

        if ((id.vendor == PCI_ANY_ID || id.vendor == pdev->vendor) &&
            (id.device == PCI_ANY_ID || id.device == pdev->device) &&
            (id.subsystem_vendor == PCI_ANY_ID || id.subsystem_vendor == pdev->subsystem_vendor) &&
            (id.subsystem_device == PCI_ANY_ID || id.subsystem_device == pdev->subsystem_device))
                return true;
        else
                return false;
}
EXPORT_SYMBOL(pldmfw_op_pci_match_record);

/**
 * pldm_find_matching_record - Find the first matching PLDM record
 * @data: pointer to private data
 *
 * Search through PLDM records and find the first matching entry. It is
 * expected that only one entry matches.
 *
 * Store a pointer to the matching record, if found.
 *
 * Returns: zero on success, or -ENOENT if no matching record is found.
 */
static int pldm_find_matching_record(struct pldmfw_priv *data)
{
        struct pldmfw_record *record;

        list_for_each_entry(record, &data->records, entry) {
                if (data->context->ops->match_record(data->context, record)) {
                        data->matching_record = record;
                        return 0;
                }
        }

        return -ENOENT;
}

/**
 * pldm_send_package_data - Send firmware the package data for the record
 * @data: pointer to private data
 *
 * Send the package data associated with the matching record to the firmware,
 * using the send_pkg_data operation.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int
pldm_send_package_data(struct pldmfw_priv *data)
{
        struct pldmfw_record *record = data->matching_record;
        const struct pldmfw_ops *ops = data->context->ops;

        if (!ops->send_package_data)
                return 0;

        return ops->send_package_data(data->context, record->package_data,
                                      record->package_data_len);
}

/**
 * pldm_send_component_tables - Send component table information to firmware
 * @data: pointer to private data
 *
 * Loop over each component, sending the applicable components to the firmware
 * via the send_component_table operation.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int
pldm_send_component_tables(struct pldmfw_priv *data)
{
        unsigned long *bitmap = data->matching_record->component_bitmap;
        struct pldmfw_component *component;
        int err;

        list_for_each_entry(component, &data->components, entry) {
                u8 index = component->index, transfer_flag = 0;

                /* Skip components which are not intended for this device */
                if (!test_bit(index, bitmap))
                        continue;

                if (!data->context->ops->send_component_table)
                        continue;

                /* determine whether this is the start, middle, end, or both
                 * the start and end of the component tables
                 */
                if (index == find_first_bit(bitmap, data->component_bitmap_len))
                        transfer_flag |= PLDM_TRANSFER_FLAG_START;
                if (index == find_last_bit(bitmap, data->component_bitmap_len))
                        transfer_flag |= PLDM_TRANSFER_FLAG_END;
                if (!transfer_flag)
                        transfer_flag = PLDM_TRANSFER_FLAG_MIDDLE;

                err = data->context->ops->send_component_table(data->context,
                                                               component,
                                                               transfer_flag);
                if (err)
                        return err;
        }

        return 0;
}

/**
 * pldm_flash_components - Program each component to device flash
 * @data: pointer to private data
 *
 * Loop through each component that is active for the matching device record,
 * and send it to the device driver for flashing.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
static int pldm_flash_components(struct pldmfw_priv *data)
{
        unsigned long *bitmap = data->matching_record->component_bitmap;
        struct pldmfw_component *component;
        int err;

        list_for_each_entry(component, &data->components, entry) {
                u8 index = component->index;

                /* Skip components which are not intended for this device */
                if (!test_bit(index, bitmap))
                        continue;

                err = data->context->ops->flash_component(data->context, component);
                if (err)
                        return err;
        }

        return 0;
}

/**
 * pldm_finalize_update - Finalize the device flash update
 * @data: pointer to private data
 *
 * Tell the device driver to perform any remaining logic to complete the
 * device update.
 *
 * Returns: zero on success, or a PLFM_FWU error indicating the reason for
 * failure.
 */
static int pldm_finalize_update(struct pldmfw_priv *data)
{
        if (data->context->ops->finalize_update)
                return data->context->ops->finalize_update(data->context);

        return 0;
}

/**
 * pldmfw_flash_image - Write a PLDM-formatted firmware image to the device
 * @context: ops and data for firmware update
 * @fw: firmware object pointing to the relevant firmware file to program
 *
 * Parse the data for a given firmware file, verifying that it is a valid PLDM
 * formatted image that matches this device.
 *
 * Extract the device record Package Data and Component Tables and send them
 * to the device firmware. Extract and write the flash data for each of the
 * components indicated in the firmware file.
 *
 * Returns: zero on success, or a negative error code on failure.
 */
int pldmfw_flash_image(struct pldmfw *context, const struct firmware *fw)
{
        struct pldmfw_priv *data;
        int err;

        data = kzalloc_obj(*data);
        if (!data)
                return -ENOMEM;

        INIT_LIST_HEAD(&data->records);
        INIT_LIST_HEAD(&data->components);

        data->fw = fw;
        data->context = context;

        err = pldm_parse_image(data);
        if (err)
                goto out_release_data;

        err = pldm_find_matching_record(data);
        if (err)
                goto out_release_data;

        err = pldm_send_package_data(data);
        if (err)
                goto out_release_data;

        err = pldm_send_component_tables(data);
        if (err)
                goto out_release_data;

        err = pldm_flash_components(data);
        if (err)
                goto out_release_data;

        err = pldm_finalize_update(data);

out_release_data:
        pldmfw_free_priv(data);
        kfree(data);

        return err;
}
EXPORT_SYMBOL(pldmfw_flash_image);

MODULE_AUTHOR("Jacob Keller <jacob.e.keller@intel.com>");
MODULE_DESCRIPTION("PLDM firmware flash update library");