diff options
Diffstat (limited to 'target/linux/mx2/patches-2.6.34/030-lzma.patch')
| -rw-r--r-- | target/linux/mx2/patches-2.6.34/030-lzma.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/target/linux/mx2/patches-2.6.34/030-lzma.patch b/target/linux/mx2/patches-2.6.34/030-lzma.patch new file mode 100644 index 000000000..9ccabf6a7 --- /dev/null +++ b/target/linux/mx2/patches-2.6.34/030-lzma.patch @@ -0,0 +1,73 @@ +This patch allows using a kernel image compressed with LZMA on ARM. +Extracting the image is fairly slow, but it might be useful on machines +with a very limited amount of storage, as the size benefit is quite +significant: +Gzip: Data Size: 1586352 Bytes = 1549.17 kB = 1.51 MB +LZMA: Data Size: 2135916 Bytes = 2085.86 kB = 2.04 MB + +Signed-off-by: Albin Tonnerre <albin.tonnerre <at> free-electrons.com> +Tested-by: Martin Michlmayr <tbm <at> cyrius.com> +--- +v2: Updated to apply on top of 2.6.34-rc1 + + arch/arm/Kconfig | 1 + + arch/arm/boot/compressed/Makefile | 1 + + arch/arm/boot/compressed/decompress.c | 4 ++++ + arch/arm/boot/compressed/piggy.lzma.S | 6 ++++++ + 4 files changed, 12 insertions(+), 0 deletions(-) + create mode 100644 arch/arm/boot/compressed/piggy.lzma.S + +diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig +index 3b18128..3ebc7c3 100644 +--- a/arch/arm/Kconfig ++++ b/arch/arm/Kconfig +@@ -21,6 +21,7 @@ config ARM + select HAVE_GENERIC_DMA_COHERENT + select HAVE_KERNEL_GZIP + select HAVE_KERNEL_LZO ++ select HAVE_KERNEL_LZMA + select HAVE_PERF_EVENTS + select PERF_USE_VMALLOC + help +diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile +index 97c89e7..53faa90 100644 +--- a/arch/arm/boot/compressed/Makefile ++++ b/arch/arm/boot/compressed/Makefile +@@ -65,6 +65,7 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ + + suffix_$(CONFIG_KERNEL_GZIP) = gzip + suffix_$(CONFIG_KERNEL_LZO) = lzo ++suffix_$(CONFIG_KERNEL_LZMA) = lzma + + targets := vmlinux vmlinux.lds \ + piggy.$(suffix_y) piggy.$(suffix_y).o \ +diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c +index 0da382f..d554df6 100644 +--- a/arch/arm/boot/compressed/decompress.c ++++ b/arch/arm/boot/compressed/decompress.c +@@ -39,6 +39,10 @@ extern void error(char *); + #include "../../../../lib/decompress_unlzo.c" + #endif + ++#ifdef CONFIG_KERNEL_LZMA ++#include "../../../../lib/decompress_unlzma.c" ++#endif ++ + void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x)) + { + decompress(input, len, NULL, NULL, output, NULL, error); +diff --git a/arch/arm/boot/compressed/piggy.lzma.S b/arch/arm/boot/compressed/piggy.lzma.S +new file mode 100644 +index 0000000..d7e69cf +--- /dev/null ++++ b/arch/arm/boot/compressed/piggy.lzma.S +@@ -0,0 +1,6 @@ ++ .section .piggydata,#alloc ++ .globl input_data ++input_data: ++ .incbin "arch/arm/boot/compressed/piggy.lzma" ++ .globl input_data_end ++input_data_end: +-- +1.7.0 + |