dfu:mmc: support to get partition information by name

The partitions can have partition name like label. If partition name is
exist, first get partition information by name than by partition number,
so we can ignore hardcoding dependency of partition number.

Change-Id: Ibfb2521438ce366959814c2a87085e9f384de588
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>

diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index 395d472e0bd995e7a7e863f786ae0c7fdfa1ca24..f405dd28d105b1e361bb80d0435f85b7e1e87ad4 100644 (file)
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -279,6 +279,24 @@ void dfu_free_entity_mmc(struct dfu_entity *dfu)
        }
 }
 
+static int dfu_get_partition_info_by_name(block_dev_desc_t *dev_desc,
+                                         const char *name,
+                                         disk_partition_t *info)
+{
+       switch (dev_desc->part_type) {
+#ifdef CONFIG_EFI_PARTITION
+       case PART_TYPE_EFI:
+               if (get_partition_info_efi_by_name(dev_desc, name, info) == 0)
+                       return 0;
+               break;
+#endif
+       default:
+               break;
+       }
+
+       return -EPERM;
+}
+
 /*
  * @param s Parameter string containing space-separated arguments:
  *     1st:
@@ -355,12 +373,17 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
                int mmcdev = second_arg;
                int mmcpart = third_arg;
 
+               if (dfu_get_partition_info_by_name(blk_dev, dfu->name,
+                                       &partinfo) == 0)
+                       goto skip;
+
                if (get_partition_info(blk_dev, mmcpart, &partinfo) != 0) {
                        error("Couldn't find part #%d on mmc device #%d\n",
                              mmcpart, mmcdev);
                        return -ENODEV;
                }
 
+skip:
                dfu->layout                     = DFU_RAW_ADDR;
                dfu->data.mmc.lba_start         = partinfo.start;
                dfu->data.mmc.lba_size          = partinfo.size;