Louis Yung-Chieh Lo b71837716d flash write and erase commands protect the active image. ...

Comapre the range to be write (erase) with the range of active image.
If overlap, return error to indicate the access denied.

Note that we actually protect only runtime code and ro data.
FMAP is intentional unprotected so that flashrom can update to new map
before jumping. Since the vector table and init code are in the same
erase page, they are unprotected as well.

BUG=chrome-os-partner:7478
TEST=

Change-Id: Icb5cc89836432a11cef80e18eb66bb39a6c9b1d9

2012-03-27 14:36:45 +08:00

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