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Commit b5bb46cd authored by Daniel Zheng's avatar Daniel Zheng Committed by Automerger Merge Worker
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Merge "documenting optimized flash super" into main am: a3b232c3 

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2725774



Change-Id: I68a8ae36335a2aec2ea1e085a672da649552d319
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 494f1ea4 a3b232c3

fastboot/README.md

+15 −0
Original line number Diff line number Diff line
@@ -188,6 +188,21 @@ The currently defined commands are: 
    erase %s           Erase a given partition (can only be used in conjunction)

                       with if-wipe -> eg. if-wipe erase cache



Flashing Optimization:



    After generating the list of tasks to execute, Fastboot will try and

    optimize the flashing of the dynamic partitions by constructing an

    optimized flash super task. Fastboot will explicitly pattern match the

    following commands and try and concatenate it into this task. (doing so

    will allow us to avoid the reboot into userspace fastbootd which takes

    significant time)



    //Optimizable Block

    reboot fastboot

    update-super                        ---> generate optimized flash super task

    $FOR EACH {dynamic partition}

        flash {dynamic partition}



## Client Variables



The "getvar:%s" command is used to read client variables which