linux: add support for support to decompress XZ compressed kernels linux-3.1.10

Signed-off-by: Stephan Raue <stephan@openelec.tv>

packages/linux/patches/linux-3.1.10-902_ARM_Wire_up_support_for_the_XZ_decompressor.patch

@@ -0,0 +1,90 @@
+diff -Naur linux-3.1.10/arch/arm/boot/compressed/decompress.c linux-3.1.10.patch/arch/arm/boot/compressed/decompress.c
+--- linux-3.1.10/arch/arm/boot/compressed/decompress.c	2012-01-18 16:33:18.000000000 +0100
++++ linux-3.1.10.patch/arch/arm/boot/compressed/decompress.c	2012-05-16 14:56:14.573384665 +0200
+@@ -44,6 +44,10 @@
+ #include "../../../../lib/decompress_unlzma.c"
+ #endif
+ 
++#ifdef CONFIG_KERNEL_XZ
++#include "../../../../lib/decompress_unxz.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 -Naur linux-3.1.10/arch/arm/boot/compressed/.gitignore linux-3.1.10.patch/arch/arm/boot/compressed/.gitignore
+--- linux-3.1.10/arch/arm/boot/compressed/.gitignore	2012-01-18 16:33:18.000000000 +0100
++++ linux-3.1.10.patch/arch/arm/boot/compressed/.gitignore	2012-05-16 14:56:14.061375297 +0200
+@@ -1,7 +1,9 @@
++ashldi3.S
+ font.c
+ lib1funcs.S
+ piggy.gzip
+ piggy.lzo
+ piggy.lzma
++piggy.xzkern
+ vmlinux
+ vmlinux.lds
+diff -Naur linux-3.1.10/arch/arm/boot/compressed/Makefile linux-3.1.10.patch/arch/arm/boot/compressed/Makefile
+--- linux-3.1.10/arch/arm/boot/compressed/Makefile	2012-01-18 16:33:18.000000000 +0100
++++ linux-3.1.10.patch/arch/arm/boot/compressed/Makefile	2012-05-16 15:03:10.707001557 +0200
+@@ -88,13 +88,14 @@
+ suffix_$(CONFIG_KERNEL_GZIP) = gzip
+ suffix_$(CONFIG_KERNEL_LZO)  = lzo
+ suffix_$(CONFIG_KERNEL_LZMA) = lzma
++suffix_$(CONFIG_KERNEL_XZ)   = xzkern
+ 
+ targets       := vmlinux vmlinux.lds \
+ 		 piggy.$(suffix_y) piggy.$(suffix_y).o \
+-		 font.o font.c head.o misc.o $(OBJS)
++		 ashldi3.o ashldi3.S font.o font.c head.o misc.o $(OBJS)
+ 
+ # Make sure files are removed during clean
+-extra-y       += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
++extra-y       += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern lib1funcs.S ashldi3.S
+ 
+ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+ ORIG_CFLAGS := $(KBUILD_CFLAGS)
+@@ -126,6 +127,12 @@
+ $(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
+ 	$(call cmd,shipped)
+ 
++# For __aeabi_llsl
++ashldi3 = $(obj)/ashldi3.o
++
++$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
++	$(call cmd,shipped)
++
+ # We need to prevent any GOTOFF relocs being used with references
+ # to symbols in the .bss section since we cannot relocate them
+ # independently from the rest at run time.  This can be achieved by
+@@ -140,7 +147,7 @@
+     echo "$$bad_syms" >&2; rm -f $@; false )
+ 
+ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
+-	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
++	 	$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
+ 	$(call if_changed,ld)
+ 	@$(check_for_bad_syms)
+ 
+diff -Naur linux-3.1.10/arch/arm/boot/compressed/piggy.xzkern.S linux-3.1.10.patch/arch/arm/boot/compressed/piggy.xzkern.S
+--- linux-3.1.10/arch/arm/boot/compressed/piggy.xzkern.S	1970-01-01 01:00:00.000000000 +0100
++++ linux-3.1.10.patch/arch/arm/boot/compressed/piggy.xzkern.S	2012-05-16 14:56:14.886390394 +0200
+@@ -0,0 +1,6 @@
++	.section .piggydata,#alloc
++	.globl	input_data
++input_data:
++	.incbin	"arch/arm/boot/compressed/piggy.xzkern"
++	.globl	input_data_end
++input_data_end:
+diff -Naur linux-3.1.10/arch/arm/Kconfig linux-3.1.10.patch/arch/arm/Kconfig
+--- linux-3.1.10/arch/arm/Kconfig	2012-01-18 16:33:18.000000000 +0100
++++ linux-3.1.10.patch/arch/arm/Kconfig	2012-05-16 14:56:13.918372675 +0200
+@@ -20,6 +20,7 @@
+ 	select HAVE_KERNEL_GZIP
+ 	select HAVE_KERNEL_LZO
+ 	select HAVE_KERNEL_LZMA
++	select HAVE_KERNEL_XZ
+ 	select HAVE_IRQ_WORK
+ 	select HAVE_PERF_EVENTS
+ 	select PERF_USE_VMALLOC