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x86: add support for LZO-compressed kernels

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The necessary changes to the x86 Kconfig and boot/compressed to allow the
use of this new compression method

Signed-off-by: Albin Tonnerre <[email protected]>
Acked-by: H. Peter Anvin <[email protected]>
Tested-by: Wu Zhangjin <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Tested-by: Russell King <[email protected]>
Acked-by: Russell King <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Albin Tonnerre 2010-01-08 14:42:45 -08:00 • committed by Linus Torvalds
commit 13510997d6
3 changed files with 9 additions and 1 deletions
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1
arch/x86/Kconfig
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@ -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

5
arch/x86/boot/compressed/Makefile
View file

@ -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 )

4
arch/x86/boot/compressed/misc.c
View file

@ -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;