• Oliver O'Halloran's avatar
    powerpc/boot: Add XZ support to the wrapper script · f1e510bb
    Oliver O'Halloran authored
    This modifies the wrapper script so that the -Z option takes an argument
    to specify the compression type. It can either be 'gz', 'xz' or 'none'.
    
    The legazy --no-gzip and -z options are still supported and will set the
    compression to none and gzip respectively, but they are not documented.
    
    Only XZ -6 is used for compression rather than XZ -9. Using compression
    levels higher than 6 requires the decompressor to build a large (64MB)
    dictionary when decompressing and some environments cannot satisfy such
    large allocations (e.g. POWER 6 LPAR partition firmware).
    Signed-off-by: default avatarOliver O'Halloran <oohall@gmail.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    f1e510bb
Makefile 18.4 KB