commit d32b966771e03788af7b912d4cf701d98c391097
author John Wedig <johnwedig@google.com> Wed Apr 13 18:12:25 2022 -0700
committer John Wedig <johnwedig@google.com> Wed Apr 27 14:08:01 2022 -0700
tree cd8ca808e2e81732f0a35da451dc6042b02749aa
parent fa5cb6f7186851db5b3a77bfb07452d440827eee

Initial integration with Entity Manager

This commit changes eStoraged so that it doesn't take a specific device
as an argument. Instead, it looks for a config object from Entity
Manager and creates a D-Bus object corresponding to the config object.

The config objects need to expose the following interface:
  "xyz.openbmc_project.Configuration.EmmcDevice"

To support more types of storage devices in the future, we can introduce
a new interface for each one.

In addition, eStoraged currently only supports 1 eMMC device. If we want
to support more than one in the future, we will need to add more
information to the Entity Manager config, to distinguish between them.

Assuming the eMMC is located on a FRU-detectable board, an "Exposes"
entry can be added to that board's Entity Manager config, for example:
{
    "Name": "example_emmc",
    "Type": "EmmcDevice"
}

Doing so will tell Entity Manager to create a config object with the
EmmcDevice interface mentioned above. Then, eStoraged will find the
config object with that interface and create its own D-Bus object that
can be used to manage the eMMC.

Tested:
Updated the Entity Manager config (as described above), started
eStoraged, then tested most of its methods and properties using busctl.
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume FormatLuks ays 3 1 2 3 \
  xyz.openbmc_project.Inventory.Item.Volume.FilesystemType.ext4 \
  --timeout=60
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Lock
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Unlock ay 3 1 2 3
$ busctl get-property xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Locked
$ busctl get-property xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Drive Capacity
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Erase s \
  xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.VerifyGeometry
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Erase s \
  xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.LogicalOverWrite \
  --timeout=1200
$ busctl call xyz.openbmc_project.eStoraged \
  /xyz/openbmc_project/inventory/storage/mmcblk0 \
  xyz.openbmc_project.Inventory.Item.Volume Erase s \
  xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.LogicalVerify \
  --timeout=1200

Signed-off-by: John Wedig <johnwedig@google.com>
Change-Id: If137d02e185c366f4a1437076512b4883ba6d595