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authorAlbin Tonnerre <albin.tonnerre@free-electrons.com>2010-01-08 14:42:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-11 09:34:05 -0800
commit13510997d600a076e064f10587a8f6d20f8fff41 (patch)
treeadd740bac060355140ca6b19b237d0167d83a1ee
parente7db7b4270ed2a606b8c0b5f944a5f92ade0e84c (diff)
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x86: add support for LZO-compressed kernels
The necessary changes to the x86 Kconfig and boot/compressed to allow the use of this new compression method Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Tested-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Tested-by: Russell King <rmk@arm.linux.org.uk> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--arch/x86/boot/compressed/Makefile5
-rw-r--r--arch/x86/boot/compressed/misc.c4
3 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 55298e89157..6bf1f1ac478 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -49,6 +49,7 @@ config X86
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
+ select HAVE_KERNEL_LZO
select HAVE_HW_BREAKPOINT
select PERF_EVENTS
select ANON_INODES
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index f25bbd37765..fbb47daf245 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -4,7 +4,7 @@
# create a compressed vmlinux image from the original vmlinux
#
-targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
+targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.lzo head_$(BITS).o misc.o piggy.o
KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
@@ -49,10 +49,13 @@ $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
$(call if_changed,bzip2)
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lzma)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
+ $(call if_changed,lzo)
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
suffix-$(CONFIG_KERNEL_LZMA) := lzma
+suffix-$(CONFIG_KERNEL_LZO) := lzo
quiet_cmd_mkpiggy = MKPIGGY $@
cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 842b2a36174..3b22fe8ab91 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -162,6 +162,10 @@ static int lines, cols;
#include "../../../../lib/decompress_unlzma.c"
#endif
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
static void scroll(void)
{
int i;