tree bc398f2ce54a1300ea49d040c57661b25884f62e
parent 25383a5da2ce4ada76df46e1bc7ae56ac0e41fc4
author JP Abgrall <jpa@google.com> 1372186325 -0700
committer JP Abgrall <jpa@google.com> 1372186325 -0700

fastboot: add preflash command to help with large downloads+flash

Without the partition name, the bootloader would have to store all
of the data until the next flash command, which potentially wastes
time.
To help the bootloader deal with the data more efficiently, we now
issue a flashing hint ("preflash:%s", partname).
"preflash:" is used to indicate that the following download
should ignore any previous "preflash:%s".

Bug: 6045918
Change-Id: I4e9708f64f28a4781bde14eb3714d36b281ec5be