/*

 * Copyright 2018 Evan Lojewski

 * Copyright 2020 Richard Hughes <richard@hughsie.com>

 *

 * SPDX-License-Identifier: LGPL-2.1-or-later

 */

#include "config.h"

#include "fu-bcm57xx-common.h"

#include "fu-bcm57xx-dict-image.h"

#include "fu-bcm57xx-firmware.h"

#include "fu-bcm57xx-stage1-image.h"

#include "fu-bcm57xx-stage2-image.h"

#include "fu-bcm57xx-struct.h"

struct _FuBcm57xxFirmware {

  FuFirmware parent_instance;

  guint16 vendor;

  guint16 model;

  gboolean is_backup;

  guint32 phys_addr;

  gsize source_size;

  guint8 source_padchar;

};

G_DEFINE_TYPE(FuBcm57xxFirmware, fu_bcm57xx_firmware, FU_TYPE_FIRMWARE)

#define BCM_STAGE1_HEADER_MAGIC_BROADCOM 0x0E000E03

#define BCM_STAGE1_HEADER_MAGIC_MEKLORT  0x3C1D0800

#define BCM_APE_HEADER_MAGIC 0x1A4D4342

#define BCM_CODE_DIRECTORY_ADDR_APE 0x07

static void

fu_bcm57xx_firmware_export(FuFirmware *firmware, FuFirmwareExportFlags flags, XbBuilderNode *bn)

{

  FuBcm57xxFirmware *self = FU_BCM57XX_FIRMWARE(firmware);

  fu_xmlb_builder_insert_kx(bn, "vendor", self->vendor);

  fu_xmlb_builder_insert_kx(bn, "model", self->model);

  if (flags & FU_FIRMWARE_EXPORT_FLAG_INCLUDE_DEBUG) {

    fu_xmlb_builder_insert_kb(bn, "is_backup", self->is_backup);

    fu_xmlb_builder_insert_kx(bn, "phys_addr", self->phys_addr);

  }

}

static gboolean

fu_bcm57xx_firmware_parse_header(FuBcm57xxFirmware *self, GInputStream *stream, GError **error)

{

  /* verify magic and CRC */

  if (!fu_bcm57xx_verify_magic(stream, 0x0, error))

    return FALSE;

  if (!fu_bcm57xx_verify_crc(stream, error))

    return FALSE;

  /* get address */

  return fu_input_stream_read_u32(stream,

          FU_STRUCT_BCM57XX_NVRAM_HEADER_OFFSET_PHYS_ADDR,

          &self->phys_addr,

          G_BIG_ENDIAN,

          error);

}

static FuFirmware *

fu_bcm57xx_firmware_parse_info(FuBcm57xxFirmware *self,

             GInputStream *stream,

             FuFirmwareParseFlags flags,

             GError **error)

{

  guint32 mac_addr0;

  g_autoptr(FuFirmware) img = fu_firmware_new();

  g_autoptr(FuStructBcm57xxNvramInfo) st = NULL;

  st = fu_struct_bcm57xx_nvram_info_parse_stream(stream, 0x0, error);

  if (st == NULL)

    return NULL;

  /* if the MAC is set non-zero this is an actual backup rather than a container */

  mac_addr0 = fu_struct_bcm57xx_nvram_info_get_mac_addr(st, 0);

  self->is_backup = mac_addr0 != 0x0 && mac_addr0 != 0xffffffff;

  /* read vendor + model */

  self->vendor = fu_struct_bcm57xx_nvram_info_get_vendor(st);

  self->model = fu_struct_bcm57xx_nvram_info_get_device(st);

  /* success */

  if (!fu_firmware_parse_stream(img, stream, 0x0, flags, error))

    return NULL;

  fu_firmware_set_id(img, "info");

  return g_steal_pointer(&img);

}

static FuFirmware *

fu_bcm57xx_firmware_parse_stage1(FuBcm57xxFirmware *self,

         GInputStream *stream,

         guint32 *out_stage1_sz,

         FuFirmwareParseFlags flags,

         GError **error)

{

  gsize streamsz = 0;

  guint32 stage1_wrds = 0;

  guint32 stage1_sz;

  guint32 stage1_off = 0;

  g_autoptr(FuStructBcm57xxNvramHeader) st = NULL;

  g_autoptr(FuFirmware) img = fu_bcm57xx_stage1_image_new();

  g_autoptr(GInputStream) stream_tmp = NULL;

  if (!fu_input_stream_size(stream, &streamsz, error))

    return NULL;

  st = fu_struct_bcm57xx_nvram_header_parse_stream(stream, BCM_NVRAM_HEADER_BASE, error);

  if (st == NULL)

    return NULL;

  stage1_wrds = fu_struct_bcm57xx_nvram_header_get_size_wrds(st);

  stage1_off = fu_struct_bcm57xx_nvram_header_get_offset(st);

  stage1_sz = (stage1_wrds * sizeof(guint32));

  if (stage1_off != BCM_NVRAM_STAGE1_BASE) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_NOT_SUPPORTED,

          "stage1 offset invalid, got: 0x%x, expected 0x%x",

          (guint)stage1_sz,

          (guint)BCM_NVRAM_STAGE1_BASE);

    return NULL;

  }

  if (stage1_off + stage1_sz > streamsz) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_NOT_SUPPORTED,

          "bigger than firmware, got: 0x%x @ 0x%x",

          (guint)stage1_sz,

          (guint)stage1_off);

    return NULL;

  }

  /* verify CRC */

  stream_tmp = fu_partial_input_stream_new(stream, stage1_off, stage1_sz, error);

  if (stream_tmp == NULL)

    return NULL;

  if (!fu_firmware_parse_stream(img,

              stream_tmp,

              0x0,

              flags | FU_FIRMWARE_PARSE_FLAG_NO_SEARCH,

              error))

    return NULL;

  /* needed for stage2 */

  if (out_stage1_sz != NULL)

    *out_stage1_sz = stage1_sz;

  /* success */

  fu_firmware_set_id(img, "stage1");

  fu_firmware_set_offset(img, stage1_off);

  return g_steal_pointer(&img);

}

static FuFirmware *

fu_bcm57xx_firmware_parse_stage2(FuBcm57xxFirmware *self,

         GInputStream *stream,

         guint32 stage1_sz,

         FuFirmwareParseFlags flags,

         GError **error)

{

  gsize streamsz = 0;

  guint32 stage2_off = 0;

  guint32 stage2_sz = 0;

  g_autoptr(FuFirmware) img = fu_bcm57xx_stage2_image_new();

  g_autoptr(GInputStream) stream_tmp = NULL;

  stage2_off = BCM_NVRAM_STAGE1_BASE + stage1_sz;

  if (!fu_bcm57xx_verify_magic(stream, stage2_off, error))

    return NULL;

  if (!fu_input_stream_read_u32(stream,

              stage2_off + sizeof(guint32),

              &stage2_sz,

              G_BIG_ENDIAN,

              error))

    return NULL;

  if (!fu_input_stream_size(stream, &streamsz, error))

    return NULL;

  if (stage2_off + stage2_sz > streamsz) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_NOT_SUPPORTED,

          "bigger than firmware, got: 0x%x @ 0x%x",

          (guint)stage2_sz,

          (guint)stage2_off);

    return NULL;

  }

  /* verify CRC */

  stream_tmp = fu_partial_input_stream_new(stream, stage2_off + 0x8, stage2_sz, error);

  if (stream_tmp == NULL)

    return NULL;

  if (!fu_firmware_parse_stream(img,

              stream_tmp,

              0x0,

              flags | FU_FIRMWARE_PARSE_FLAG_NO_SEARCH,

              error))

    return NULL;

  /* success */

  fu_firmware_set_id(img, "stage2");

  fu_firmware_set_offset(img, stage2_off);

  return g_steal_pointer(&img);

}

static gboolean

fu_bcm57xx_firmware_parse_dict(FuBcm57xxFirmware *self,

             GInputStream *stream,

             guint idx,

             FuFirmwareParseFlags flags,

             GError **error)

{

  gsize streamsz = 0;

  guint32 dict_addr = 0x0;

  guint32 dict_info = 0x0;

  guint32 dict_off = 0x0;

  guint32 dict_sz;

  guint32 base = BCM_NVRAM_DIRECTORY_BASE + (idx * FU_STRUCT_BCM57XX_NVRAM_DIRECTORY_SIZE);

  g_autoptr(FuFirmware) img = fu_bcm57xx_dict_image_new();

  g_autoptr(FuStructBcm57xxNvramDirectory) st = NULL;

  g_autoptr(GInputStream) stream_tmp = NULL;

  /* header */

  st = fu_struct_bcm57xx_nvram_directory_parse_stream(stream, base, error);

  if (st == NULL)

    return FALSE;

  dict_addr = fu_struct_bcm57xx_nvram_directory_get_addr(st);

  dict_info = fu_struct_bcm57xx_nvram_directory_get_size_wrds(st);

  dict_off = fu_struct_bcm57xx_nvram_directory_get_offset(st);

  /* no dict stored */

  if (dict_addr == 0 && dict_info == 0 && dict_off == 0)

    return TRUE;

  dict_sz =

      (dict_info & 0x00FFFFFF) * sizeof(guint32); /* implies that maximum size is 16 MB */

  fu_bcm57xx_dict_image_set_target(FU_BCM57XX_DICT_IMAGE(img),

           (dict_info & 0x0F000000) >> 24);

  fu_bcm57xx_dict_image_set_kind(FU_BCM57XX_DICT_IMAGE(img), (dict_info & 0xF0000000) >> 28);

  fu_firmware_set_addr(img, dict_addr);

  fu_firmware_set_offset(img, dict_off);

  fu_firmware_set_idx(img, 0x80 + idx);

  /* empty */

  if (dict_sz == 0) {

    g_autoptr(GBytes) blob = g_bytes_new(NULL, 0);

    fu_firmware_set_bytes(img, blob);

    return fu_firmware_add_image(FU_FIRMWARE(self), img, error);

  }

  /* check against image size */

  if (!fu_input_stream_size(stream, &streamsz, error))

    return FALSE;

  if (dict_off + dict_sz > streamsz) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_NOT_SUPPORTED,

          "bigger than firmware, got: 0x%x @ 0x%x",

          (guint)dict_sz,

          (guint)dict_off);

    return FALSE;

  }

  stream_tmp = fu_partial_input_stream_new(stream, dict_off, dict_sz, error);

  if (stream_tmp == NULL)

    return FALSE;

  if (!fu_firmware_parse_stream(img,

              stream_tmp,

              0x0,

              flags | FU_FIRMWARE_PARSE_FLAG_NO_SEARCH,

              error))

    return FALSE;

  /* success */

  return fu_firmware_add_image(FU_FIRMWARE(self), img, error);

}

static gboolean

fu_bcm57xx_firmware_validate(FuFirmware *firmware,

           GInputStream *stream,

           gsize offset,

           GError **error)

{

  guint32 magic = 0;

  if (!fu_input_stream_read_u32(stream, 0x0, &magic, G_BIG_ENDIAN, error)) {

    g_prefix_error_literal(error, "failed to read magic: ");

    return FALSE;

  }

  if (magic != BCM_APE_HEADER_MAGIC && magic != BCM_STAGE1_HEADER_MAGIC_BROADCOM &&

      magic != BCM_STAGE1_HEADER_MAGIC_MEKLORT && magic != BCM_NVRAM_MAGIC) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_INVALID_FILE,

          "file not supported, got: 0x%08X",

          magic);

    return FALSE;

  }

  /* success */

  return TRUE;

}

static gboolean

fu_bcm57xx_firmware_parse(FuFirmware *firmware,

        GInputStream *stream,

        FuFirmwareParseFlags flags,

        GError **error)

{

  FuBcm57xxFirmware *self = FU_BCM57XX_FIRMWARE(firmware);

  gsize streamsz = 0;

  guint32 magic = 0;

  guint32 stage1_sz = 0;

  g_autoptr(FuFirmware) img_info2 = fu_firmware_new();

  g_autoptr(FuFirmware) img_info = NULL;

  g_autoptr(FuFirmware) img_stage1 = NULL;

  g_autoptr(FuFirmware) img_stage2 = NULL;

  g_autoptr(FuFirmware) img_vpd = fu_firmware_new();

  g_autoptr(GInputStream) stream_header = NULL;

  g_autoptr(GInputStream) stream_info2 = NULL;

  g_autoptr(GInputStream) stream_info = NULL;

  g_autoptr(GInputStream) stream_vpd = NULL;

  /* try to autodetect the file type */

  if (!fu_input_stream_read_u32(stream, 0x0, &magic, G_BIG_ENDIAN, error))

    return FALSE;

  /* standalone APE */

  if (magic == BCM_APE_HEADER_MAGIC) {

    g_autoptr(FuFirmware) img = fu_bcm57xx_dict_image_new();

    fu_bcm57xx_dict_image_set_target(FU_BCM57XX_DICT_IMAGE(img), 0xD);

    fu_bcm57xx_dict_image_set_kind(FU_BCM57XX_DICT_IMAGE(img), 0x0);

    fu_firmware_set_addr(img, BCM_CODE_DIRECTORY_ADDR_APE);

    fu_firmware_set_id(img, "ape");

    return fu_firmware_add_image(firmware, img, error);

  }

  /* standalone stage1 */

  if (magic == BCM_STAGE1_HEADER_MAGIC_BROADCOM || magic == BCM_STAGE1_HEADER_MAGIC_MEKLORT) {

    g_autoptr(FuFirmware) img_stage1_standalone = fu_firmware_new();

    if (!fu_firmware_set_stream(img_stage1_standalone, stream, error))

      return FALSE;

    fu_firmware_set_id(img_stage1_standalone, "stage1");

    return fu_firmware_add_image(firmware, img_stage1_standalone, error);

  }

  /* not full NVRAM image */

  if (magic != BCM_NVRAM_MAGIC) {

    g_set_error(error,

          FWUPD_ERROR,

          FWUPD_ERROR_NOT_SUPPORTED,

          "file not supported, got: 0x%08X",

          magic);

    return FALSE;

  }

  /* save the size so we can export the padding for a perfect roundtrip */

  if (!fu_input_stream_size(stream, &streamsz, error))

    return FALSE;

  self->source_size = streamsz;

  if (!fu_input_stream_read_u8(stream, streamsz - 1, &self->source_padchar, error))

    return FALSE;

  /* NVRAM header */

  stream_header = fu_partial_input_stream_new(stream,

                BCM_NVRAM_HEADER_BASE,

                FU_STRUCT_BCM57XX_NVRAM_HEADER_SIZE,

                error);

  if (stream_header == NULL)

    return FALSE;

  if (!fu_bcm57xx_firmware_parse_header(self, stream_header, error)) {

    g_prefix_error_literal(error, "failed to parse header: ");

    return FALSE;

  }

  /* info */

  stream_info = fu_partial_input_stream_new(stream,

              BCM_NVRAM_INFO_BASE,

              FU_STRUCT_BCM57XX_NVRAM_INFO_SIZE,

              error);

  if (stream_info == NULL)

    return FALSE;

  img_info = fu_bcm57xx_firmware_parse_info(self, stream_info, flags, error);

  if (img_info == NULL) {

    g_prefix_error_literal(error, "failed to parse info: ");

    return FALSE;

  }

  fu_firmware_set_offset(img_info, BCM_NVRAM_INFO_BASE);

  if (!fu_firmware_add_image(firmware, img_info, error))

    return FALSE;

  /* VPD */

  stream_vpd =

      fu_partial_input_stream_new(stream, BCM_NVRAM_VPD_BASE, BCM_NVRAM_VPD_SZ, error);

  if (stream_vpd == NULL)

    return FALSE;

  if (!fu_firmware_parse_stream(img_vpd, stream_vpd, 0x0, flags, error)) {

    g_prefix_error_literal(error, "failed to parse VPD: ");

    return FALSE;

  }

  fu_firmware_set_id(img_vpd, "vpd");

  fu_firmware_set_offset(img_vpd, BCM_NVRAM_VPD_BASE);

  if (!fu_firmware_add_image(firmware, img_vpd, error))

    return FALSE;

  /* info2 */

  stream_info2 =

      fu_partial_input_stream_new(stream, BCM_NVRAM_INFO2_BASE, BCM_NVRAM_INFO2_SZ, error);

  if (stream_info2 == NULL)

    return FALSE;

  if (!fu_firmware_parse_stream(img_info2, stream_info2, 0x0, flags, error)) {

    g_prefix_error_literal(error, "failed to parse info2: ");

    return FALSE;

  }

  fu_firmware_set_id(img_info2, "info2");

  fu_firmware_set_offset(img_info2, BCM_NVRAM_INFO2_BASE);

  if (!fu_firmware_add_image(firmware, img_info2, error))

    return FALSE;

  /* stage1 */

  img_stage1 = fu_bcm57xx_firmware_parse_stage1(self, stream, &stage1_sz, flags, error);

  if (img_stage1 == NULL) {

    g_prefix_error_literal(error, "failed to parse stage1: ");

    return FALSE;

  }

  if (!fu_firmware_add_image(firmware, img_stage1, error))

    return FALSE;

  /* stage2 */

  img_stage2 = fu_bcm57xx_firmware_parse_stage2(self, stream, stage1_sz, flags, error);

  if (img_stage2 == NULL) {

    g_prefix_error_literal(error, "failed to parse stage2: ");

    return FALSE;

  }

  if (!fu_firmware_add_image(firmware, img_stage2, error))

    return FALSE;

  /* dictionaries, e.g. APE */

  for (guint i = 0; i < 8; i++) {

    if (!fu_bcm57xx_firmware_parse_dict(self, stream, i, flags, error)) {

      g_prefix_error(error, "failed to parse dict 0x%x: ", i);

      return FALSE;

    }

  }

  /* success */

  return TRUE;

}

static GBytes *

_g_bytes_new_sized(gsize sz)

{

  g_autoptr(GByteArray) tmp = g_byte_array_sized_new(sz);

  for (gsize i = 0; i < sz; i++)

    fu_byte_array_append_uint8(tmp, 0x0);

  return g_bytes_new(tmp->data, tmp->len);

}

static gboolean

fu_bcm57xx_firmware_build(FuFirmware *firmware, XbNode *n, GError **error)

{

  FuBcm57xxFirmware *self = FU_BCM57XX_FIRMWARE(firmware);

  guint64 tmp;

  /* two simple properties */

  tmp = xb_node_query_text_as_uint(n, "vendor", NULL);

  if (tmp != G_MAXUINT64 && tmp <= G_MAXUINT16)

    self->vendor = tmp;

  tmp = xb_node_query_text_as_uint(n, "model", NULL);

  if (tmp != G_MAXUINT64 && tmp <= G_MAXUINT16)

    self->model = tmp;

  /* success */

  return TRUE;

}

static GByteArray *

fu_bcm57xx_firmware_write(FuFirmware *firmware, GError **error)

{

  gsize off = BCM_NVRAM_STAGE1_BASE;

  FuBcm57xxFirmware *self = FU_BCM57XX_FIRMWARE(firmware);

  g_autoptr(GByteArray) buf = g_byte_array_sized_new(self->source_size);

  g_autoptr(FuFirmware) img_info2 = NULL;

  g_autoptr(FuFirmware) img_info = NULL;

  g_autoptr(FuFirmware) img_stage1 = NULL;

  g_autoptr(FuFirmware) img_stage2 = NULL;

  g_autoptr(FuFirmware) img_vpd = NULL;

  g_autoptr(GBytes) blob_info2 = NULL;

  g_autoptr(GBytes) blob_info = NULL;

  g_autoptr(GBytes) blob_stage1 = NULL;

  g_autoptr(GBytes) blob_stage2 = NULL;

  g_autoptr(GBytes) blob_vpd = NULL;

  g_autoptr(GPtrArray) blob_dicts = NULL;

  /* write out the things we need to pre-compute */

  img_stage1 = fu_firmware_get_image_by_id(firmware, "stage1", error);

  if (img_stage1 == NULL)

    return NULL;

  blob_stage1 = fu_firmware_write(img_stage1, error);

  if (blob_stage1 == NULL)

    return NULL;

  off += g_bytes_get_size(blob_stage1);

  img_stage2 = fu_firmware_get_image_by_id(firmware, "stage2", error);

  if (img_stage2 == NULL)

    return NULL;

  blob_stage2 = fu_firmware_write(img_stage2, error);

  if (blob_stage2 == NULL)

    return NULL;

  off += g_bytes_get_size(blob_stage2);

  /* add header */

  fu_byte_array_append_uint32(buf, BCM_NVRAM_MAGIC, G_BIG_ENDIAN);

  fu_byte_array_append_uint32(buf, self->phys_addr, G_BIG_ENDIAN);

  fu_byte_array_append_uint32(buf,

            g_bytes_get_size(blob_stage1) / sizeof(guint32),

            G_BIG_ENDIAN);

  fu_byte_array_append_uint32(buf, BCM_NVRAM_STAGE1_BASE, G_BIG_ENDIAN);

  fu_byte_array_append_uint32(buf,

            fu_crc32(FU_CRC_KIND_B32_STANDARD, buf->data, buf->len),

            G_LITTLE_ENDIAN);

  /* add directory entries */

  blob_dicts = g_ptr_array_new_with_free_func((GDestroyNotify)g_bytes_unref);

  for (guint i = 0; i < 8; i++) {

    g_autoptr(FuFirmware) img = NULL;

    g_autoptr(GBytes) blob = NULL;

    img = fu_firmware_get_image_by_idx(firmware, 0x80 + i, NULL);

    if (img != NULL) {

      blob = fu_firmware_write(img, error);

      if (blob == NULL)

        return NULL;

    }

    if (blob != NULL) {

      fu_byte_array_append_uint32(buf, fu_firmware_get_addr(img), G_BIG_ENDIAN);

      fu_byte_array_append_uint32(

          buf,

          (g_bytes_get_size(blob) / sizeof(guint32)) |

        (guint32)fu_bcm57xx_dict_image_get_target(

            FU_BCM57XX_DICT_IMAGE(img))

            << 24 |

        (guint32)fu_bcm57xx_dict_image_get_kind(FU_BCM57XX_DICT_IMAGE(img))

            << 28,

          G_BIG_ENDIAN);

      if (g_bytes_get_size(blob) > 0) {

        fu_byte_array_append_uint32(buf, off, G_BIG_ENDIAN);

        off += g_bytes_get_size(blob);

      } else {

        fu_byte_array_append_uint32(buf, 0x0, G_BIG_ENDIAN);

      }

    } else {

      blob = g_bytes_new(NULL, 0);

      for (guint32 j = 0; j < sizeof(guint32) * 3; j++)

        fu_byte_array_append_uint8(buf, 0x0);

    }

    g_ptr_array_add(blob_dicts, g_steal_pointer(&blob));

  }

  /* add info */

  img_info = fu_firmware_get_image_by_id(firmware, "info", NULL);

  if (img_info != NULL) {

    blob_info = fu_firmware_write(img_info, error);

    if (blob_info == NULL)

      return NULL;

  } else {

    g_autoptr(FuStructBcm57xxNvramInfo) st = fu_struct_bcm57xx_nvram_info_new();

    fu_struct_bcm57xx_nvram_info_set_device(st, self->model);

    fu_struct_bcm57xx_nvram_info_set_vendor(st, self->vendor);

    blob_info = fu_struct_bcm57xx_nvram_info_to_bytes(st);

  }

  fu_byte_array_append_bytes(buf, blob_info);

  /* add vpd */

  img_vpd = fu_firmware_get_image_by_id(firmware, "vpd", NULL);

  if (img_vpd != NULL) {

    blob_vpd = fu_firmware_write(img_vpd, error);

    if (blob_vpd == NULL)

      return NULL;

  } else {

    blob_vpd = _g_bytes_new_sized(BCM_NVRAM_VPD_SZ);

  }

  fu_byte_array_append_bytes(buf, blob_vpd);

  /* add info2 */

  img_info2 = fu_firmware_get_image_by_id(firmware, "info2", NULL);

  if (img_info2 != NULL) {

    blob_info2 = fu_firmware_write(img_info2, error);

    if (blob_info2 == NULL)

      return NULL;

  } else {

    blob_info2 = _g_bytes_new_sized(BCM_NVRAM_INFO2_SZ);

  }

  fu_byte_array_append_bytes(buf, blob_info2);

  /* add stage1+2 */

  fu_byte_array_append_bytes(buf, blob_stage1);

  fu_byte_array_append_bytes(buf, blob_stage2);

  /* add dictionaries, e.g. APE */

  for (guint i = 0; i < blob_dicts->len; i++) {

    GBytes *blob = g_ptr_array_index(blob_dicts, i);

    fu_byte_array_append_bytes(buf, blob);

  }

  /* pad until full */

  for (guint32 i = buf->len; i < self->source_size; i++)

    fu_byte_array_append_uint8(buf, self->source_padchar);

  /* add EOF */

  return g_steal_pointer(&buf);

}

guint16

fu_bcm57xx_firmware_get_vendor(FuBcm57xxFirmware *self)

{

  return self->vendor;

}

guint16

fu_bcm57xx_firmware_get_model(FuBcm57xxFirmware *self)

{

  return self->model;

}

gboolean

fu_bcm57xx_firmware_is_backup(FuBcm57xxFirmware *self)

{

  return self->is_backup;

}

static void

fu_bcm57xx_firmware_init(FuBcm57xxFirmware *self)

{

  self->phys_addr = BCM_PHYS_ADDR_DEFAULT;

  self->source_size = BCM_FIRMWARE_SIZE;

  self->source_padchar = 0xff;

  fu_firmware_add_flag(FU_FIRMWARE(self), FU_FIRMWARE_FLAG_DEDUPE_ID);

  fu_firmware_add_flag(FU_FIRMWARE(self), FU_FIRMWARE_FLAG_HAS_CHECKSUM);

  fu_firmware_add_flag(FU_FIRMWARE(self), FU_FIRMWARE_FLAG_HAS_VID_PID);

  g_type_ensure(FU_TYPE_BCM57XX_STAGE1_IMAGE);

  g_type_ensure(FU_TYPE_BCM57XX_STAGE2_IMAGE);

  g_type_ensure(FU_TYPE_BCM57XX_DICT_IMAGE);

}

static void

fu_bcm57xx_firmware_class_init(FuBcm57xxFirmwareClass *klass)

{

  FuFirmwareClass *firmware_class = FU_FIRMWARE_CLASS(klass);

  firmware_class->validate = fu_bcm57xx_firmware_validate;

  firmware_class->parse = fu_bcm57xx_firmware_parse;

  firmware_class->export = fu_bcm57xx_firmware_export;

  firmware_class->write = fu_bcm57xx_firmware_write;

  firmware_class->build = fu_bcm57xx_firmware_build;

}

FuFirmware *

fu_bcm57xx_firmware_new(void)

{

  return FU_FIRMWARE(g_object_new(FU_TYPE_BCM57XX_FIRMWARE, NULL));

}