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Commit b9c40820 authored by Yifan Hong's avatar Yifan Hong
Browse files

Update health 2.1 README for non A/B devices. 

Non A/B devices should install the passthrough health impl
to recovery for IsBatteryOk() check during OTA updates.

Test: pass
Change-Id: Ib83518fd5f8f55f693be88a55fa708459a22417f
parent b6f7e58a

health/2.1/README.md

+17 −0
Original line number Diff line number Diff line
@@ -24,6 +24,9 @@ 
        ```mk

        # Install default passthrough implementation to vendor.

        PRODUCT_PACKAGES += android.hardware.health@2.1-impl



        # For non-A/B devices, install default passthrough implementation to recovery.

        PRODUCT_PACKAGES += android.hardware.health@2.1-impl.recovery

        ```



        You are done. Otherwise, go to the next step.
@@ -42,6 +45,8 @@ 
              implementation, See

              [Upgrading from Health HAL 2.0](#update-from-2-0).



        1. [Install the implementation](#install).



        1. [Update necessary SELinux permissions](#selinux).



        1. [Fix `/charger` symlink](#charger-symlink).
@@ -95,6 +100,18 @@ and `update()`, with an additional `energyCounter()` function. 
  `HealthImpl::getHealthInfo` or `HealthImpl::getHealthInfo_2_1` because they call

  `getDiskStats` and `getStorageInfo` to retrieve storage information.



# Install the implementation {#install}



In `device.mk`:



```mk

# Install the passthrough implementation to vendor.

PRODUCT_PACKAGES += android.hardware.health@2.1-impl-<device>



# For non-A/B devices, also install the passthrough implementation to recovery.

PRODUCT_PACKAGES += android.hardware.health@2.1-impl-<device>.recovery

```



# Update necessary SELinux permissions {#selinux}



For example (replace `<device>` with the device name):