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 72fa03eedaecd3700fea7d4ed4e277fad2112ce5..2689dd466de25e783dd6eb101e1df0b5984af1ee 100644 (file)
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -257,6 +257,24 @@ int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
        return ret;
 }
 
+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:
@@ -333,12 +351,17 @@ 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;