diff options
| author | Kyungsik Lee <kyungsik.lee@lge.com> | 2013-07-08 16:01:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 10:33:30 -0700 |
| commit | f9b493ac9b833fd9dd3bbd50460adb33f29e1238 (patch) | |
| tree | da0a287ecbfe40796443a4209bb4e4261d6b84ea /arch/arm | |
| parent | e76e1fdfa8f8dc1ea6699923cf5d92b5bee9c936 (diff) | |
| download | linux-f9b493ac9b833fd9dd3bbd50460adb33f29e1238.tar.bz2 | |
arm: add support for LZ4-compressed kernel
Integrates the LZ4 decompression code to the arm pre-boot code.
Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Yann Collet <yann.collet.73@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/.gitignore | 1 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/decompress.c | 4 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/piggy.lz4.S | 6 |
5 files changed, 14 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5ef7af01373a..0ac9be677ebb 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -41,6 +41,7 @@ config ARM select HAVE_IDE if PCI || ISA || PCMCIA select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KERNEL_GZIP + select HAVE_KERNEL_LZ4 select HAVE_KERNEL_LZMA select HAVE_KERNEL_LZO select HAVE_KERNEL_XZ diff --git a/arch/arm/boot/compressed/.gitignore b/arch/arm/boot/compressed/.gitignore index f79a08efe000..47279aa96a6a 100644 --- a/arch/arm/boot/compressed/.gitignore +++ b/arch/arm/boot/compressed/.gitignore @@ -6,6 +6,7 @@ piggy.gzip piggy.lzo piggy.lzma piggy.xzkern +piggy.lz4 vmlinux vmlinux.lds diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 48d0a44270bd..7ac1610252ba 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -91,6 +91,7 @@ suffix_$(CONFIG_KERNEL_GZIP) = gzip suffix_$(CONFIG_KERNEL_LZO) = lzo suffix_$(CONFIG_KERNEL_LZMA) = lzma suffix_$(CONFIG_KERNEL_XZ) = xzkern +suffix_$(CONFIG_KERNEL_LZ4) = lz4 # Borrowed libfdt files for the ATAG compatibility mode @@ -115,7 +116,7 @@ targets := vmlinux vmlinux.lds \ font.o font.c head.o misc.o $(OBJS) # Make sure files are removed during clean -extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern \ +extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \ lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) \ hyp-stub.S diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c index 24b0475cb8bf..bd245d34952d 100644 --- a/arch/arm/boot/compressed/decompress.c +++ b/arch/arm/boot/compressed/decompress.c @@ -51,6 +51,10 @@ extern char * strstr(const char * s1, const char *s2); #include "../../../../lib/decompress_unxz.c" #endif +#ifdef CONFIG_KERNEL_LZ4 +#include "../../../../lib/decompress_unlz4.c" +#endif + int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x)) { return decompress(input, len, NULL, NULL, output, NULL, error); diff --git a/arch/arm/boot/compressed/piggy.lz4.S b/arch/arm/boot/compressed/piggy.lz4.S new file mode 100644 index 000000000000..3d9a575618a3 --- /dev/null +++ b/arch/arm/boot/compressed/piggy.lz4.S @@ -0,0 +1,6 @@ + .section .piggydata,#alloc + .globl input_data +input_data: + .incbin "arch/arm/boot/compressed/piggy.lz4" + .globl input_data_end +input_data_end: |