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Otherwise the host needs to tell the EC how big this image is (which it knows, but it's inconvenient for it to provide). BUG=chrome-os-partner:13511 BRANCH=all TEST=manual 1. ectool echash recalc ro -> prints hash of RO code (offset 0) 2. ectool echash recalc rw -> prints hash of RW code (offset non-zero) In each case, size should be an exact number and not the size of the whole RO or RW section. So for link, output should be something similar to: localhost ~ # ectool echash recalc ro Hashing EC-RO... status: done type: SHA-256 offset: 0x00000000 size: 0x00012a64 hash: 03a66c076d6dd4b4aa9ed6386713f45291f5143f9af2093003e632485899daf1 localhost ~ # ectool echash recalc rw Hashing EC-RW... status: done type: SHA-256 offset: 0x00014000 size: 0x000123d1 hash: 0d6225e70f0b1e0419e987370371e00783f945827ef25915a8fb8549159dd2a4 Signed-off-by: Randall Spangler <rspangler@chromium.org> 3. At ec console, 'hash ro' or 'hash rw' should regenerate the same hash values printed above. Change-Id: I3f6085d29927b8cdf9dabc6930f0fdc7222bd8b5 Reviewed-on: https://gerrit.chromium.org/gerrit/33123 Tested-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Commit-Ready: Randall Spangler <rspangler@chromium.org>