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add lzop decompression support

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Add lzop decompression support to the existing lzo bitstream handling
(think gzip versus zlib), and support it for uImage decompression if
CONFIG_LZO is enabled.

Lzop doesn't compress as good as gzip (~10% worse), but decompression
is very fast (~0.7s faster here on a slow ppc). The lzop decompression
code is based on Albin Tonnerre's recent ARM Linux lzo support patch.

Cc: albin.tonnerre@free-electrons.com
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Peter Korsgaard
2009-11-19 11:37:51 +01:00
committed by Wolfgang Denk
parent 3eb90bad65
commit 20dde48bca
5 changed files with 115 additions and 0 deletions
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include/image.h
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@@ -164,6 +164,7 @@
#define IH_COMP_GZIP 1 /* gzip Compression Used */
#define IH_COMP_BZIP2 2 /* bzip2 Compression Used */
#define IH_COMP_LZMA 3 /* lzma Compression Used */
#define IH_COMP_LZO 4 /* lzo Compression Used */
#define IH_MAGIC 0x27051956 /* Image Magic Number */
#define IH_NMLEN 32 /* Image Name Length */