mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 17:26:15 +02:00
66eeee56c1
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22766 3c298f89-4303-0410-b956-a3cf2f4a3e73
107 lines
3.3 KiB
Diff
107 lines
3.3 KiB
Diff
--- a/lib/Kconfig
|
|
+++ b/lib/Kconfig
|
|
@@ -126,6 +126,10 @@ config DECOMPRESS_LZMA
|
|
config DECOMPRESS_LZMA_NEEDED
|
|
boolean
|
|
|
|
+config DECOMPRESS_LZO
|
|
+ select LZO_DECOMPRESS
|
|
+ tristate
|
|
+
|
|
#
|
|
# Generic allocator support is selected if needed
|
|
#
|
|
--- a/lib/Makefile
|
|
+++ b/lib/Makefile
|
|
@@ -81,6 +81,7 @@ obj-$(CONFIG_LZMA_DECOMPRESS) += lzma/
|
|
lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
|
|
lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
|
|
lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
|
|
+lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
|
|
|
|
obj-$(CONFIG_TEXTSEARCH) += textsearch.o
|
|
obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
|
|
--- a/lib/decompress.c
|
|
+++ b/lib/decompress.c
|
|
@@ -9,6 +9,7 @@
|
|
#include <linux/decompress/bunzip2.h>
|
|
#include <linux/decompress/unlzma.h>
|
|
#include <linux/decompress/inflate.h>
|
|
+#include <linux/decompress/unlzo.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/string.h>
|
|
@@ -22,6 +23,9 @@
|
|
#ifndef CONFIG_DECOMPRESS_LZMA
|
|
# define unlzma NULL
|
|
#endif
|
|
+#ifndef CONFIG_DECOMPRESS_LZO
|
|
+# define unlzo NULL
|
|
+#endif
|
|
|
|
static const struct compress_format {
|
|
unsigned char magic[2];
|
|
@@ -32,6 +36,7 @@ static const struct compress_format {
|
|
{ {037, 0236}, "gzip", gunzip },
|
|
{ {0x42, 0x5a}, "bzip2", bunzip2 },
|
|
{ {0x5d, 0x00}, "lzma", unlzma },
|
|
+ { {0x89, 0x4c}, "lzo", unlzo },
|
|
{ {0, 0}, NULL, NULL }
|
|
};
|
|
|
|
--- a/usr/Kconfig
|
|
+++ b/usr/Kconfig
|
|
@@ -72,6 +72,15 @@ config RD_LZMA
|
|
Support loading of a LZMA encoded initial ramdisk or cpio buffer
|
|
If unsure, say N.
|
|
|
|
+config RD_LZO
|
|
+ bool "Support initial ramdisks compressed using LZO" if EMBEDDED
|
|
+ default !EMBEDDED
|
|
+ depends on BLK_DEV_INITRD && HAVE_KERNEL_LZO
|
|
+ select DECOMPRESS_LZO
|
|
+ help
|
|
+ Support loading of a LZO encoded initial ramdisk or cpio buffer
|
|
+ If unsure, say N.
|
|
+
|
|
choice
|
|
prompt "Built-in initramfs compression mode" if INITRAMFS_SOURCE!=""
|
|
help
|
|
@@ -108,16 +117,15 @@ config INITRAMFS_COMPRESSION_GZIP
|
|
bool "Gzip"
|
|
depends on RD_GZIP
|
|
help
|
|
- The old and tried gzip compression. Its compression ratio is
|
|
- the poorest among the 3 choices; however its speed (both
|
|
- compression and decompression) is the fastest.
|
|
+ The old and tried gzip compression. It provides a good balance
|
|
+ between compression ratio and decompression speed.
|
|
|
|
config INITRAMFS_COMPRESSION_BZIP2
|
|
bool "Bzip2"
|
|
depends on RD_BZIP2
|
|
help
|
|
Its compression ratio and speed is intermediate.
|
|
- Decompression speed is slowest among the three. The initramfs
|
|
+ Decompression speed is slowest among the four. The initramfs
|
|
size is about 10% smaller with bzip2, in comparison to gzip.
|
|
Bzip2 uses a large amount of memory. For modern kernels you
|
|
will need at least 8MB RAM or more for booting.
|
|
@@ -128,7 +136,15 @@ config INITRAMFS_COMPRESSION_LZMA
|
|
help
|
|
The most recent compression algorithm.
|
|
Its ratio is best, decompression speed is between the other
|
|
- two. Compression is slowest. The initramfs size is about 33%
|
|
+ three. Compression is slowest. The initramfs size is about 33%
|
|
smaller with LZMA in comparison to gzip.
|
|
|
|
+config INITRAMFS_COMPRESSION_LZO
|
|
+ bool "LZO"
|
|
+ depends on RD_LZO
|
|
+ help
|
|
+ Its compression ratio is the poorest among the four. The kernel
|
|
+ size is about about 10% bigger than gzip; however its speed
|
|
+ (both compression and decompression) is the fastest.
|
|
+
|
|
endchoice
|