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mtd: Support dumping the image to a firmware blob

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This commit is contained in:
Richard Hughes 2022-03-17 21:15:01 +00:00
parent 095cbad100
commit 7d9dff4789
1 changed files with 35 additions and 0 deletions
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35
plugins/mtd/fu-mtd-device.c
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@ -271,6 +271,40 @@ fu_mtd_device_write_verify(FuMtdDevice *self, GBytes *fw, FuProgress *progress,
return TRUE;
}
static GBytes *
fu_mtd_device_dump_firmware(FuDevice *device, FuProgress *progress, GError **error)
{
FuMtdDevice *self = FU_MTD_DEVICE(device);
gsize bufsz = fu_device_get_firmware_size_max(device);
g_autofree guint8 *buf = g_malloc0(bufsz);
g_autoptr(GPtrArray) chunks = NULL;
/* progress */
fu_progress_set_id(progress, G_STRLOC);
fu_progress_set_status(progress, FWUPD_STATUS_DEVICE_READ);
/* read each chunk */
chunks = fu_chunk_array_mutable_new(buf, bufsz, 0x0, 0x0, 10 * 1024);
fu_progress_set_steps(progress, chunks->len);
for (guint i = 0; i < chunks->len; i++) {
FuChunk *chk = g_ptr_array_index(chunks, i);
if (!fu_udev_device_pread_full(FU_UDEV_DEVICE(self),
fu_chunk_get_address(chk),
fu_chunk_get_data_out(chk),
fu_chunk_get_data_sz(chk),
error)) {
g_prefix_error(error,
"failed to read @0x%x: ",
(guint)fu_chunk_get_address(chk));
return NULL;
}
fu_progress_step_done(progress);
}
/* success */
return g_bytes_new_take(g_steal_pointer(&buf), bufsz);
}
static gboolean
fu_mtd_device_write_firmware(FuDevice *device,
FuFirmware *firmware,
@ -340,5 +374,6 @@ fu_mtd_device_class_init(FuMtdDeviceClass *klass)
klass_device->probe = fu_mtd_device_probe;
klass_device->setup = fu_mtd_device_setup;
klass_device->to_string = fu_mtd_device_to_string;
klass_device->dump_firmware = fu_mtd_device_dump_firmware;
klass_device->write_firmware = fu_mtd_device_write_firmware;
}