Update the usage output of sbsign and sbverify so that it can be better
parsed by help2man. Also, add --version and --help.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Add make logic to import lib/ccan from lib/ccan.git. We need to set some
dependencies on $(obj) to ensure the the ccan headers are available
before starting the main build.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Add a check to match the calculated image's hash against the one found
in the PKCS7 IndirectDataContext
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
