make XZ working for old kernel

package/busybox/Config.in.manual

@@ -9,6 +9,7 @@ config ADK_PACKAGE_BUSYBOX
 	select ADK_COMPILE_BUSYBOX
 	default y if !ADK_TOOLCHAIN_ONLY
 	select ADK_PACKAGE_LIBTIRPC
+	select ADK_PACKAGE_LIBPTHREAD
 	help
 	  Core utilities for embedded Linux systems
 	  

target/linux/patches/2.6.39.4/brcm.patch

@@ -1,6 +1,6 @@
 diff -Nur linux-2.6.39.4.orig/arch/mips/Kconfig linux-2.6.39.4/arch/mips/Kconfig
 --- linux-2.6.39.4.orig/arch/mips/Kconfig	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/arch/mips/Kconfig	2012-01-17 20:37:12.000000000 +0100
++++ linux-2.6.39.4/arch/mips/Kconfig	2012-06-02 20:35:49.000000000 +0200
 @@ -103,6 +103,12 @@
  	select GENERIC_GPIO
  	select SYS_HAS_EARLY_PRINTK
@@ -16,7 +16,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/Kconfig linux-2.6.39.4/arch/mips/Kconfig
  
 diff -Nur linux-2.6.39.4.orig/arch/mips/Makefile linux-2.6.39.4/arch/mips/Makefile
 --- linux-2.6.39.4.orig/arch/mips/Makefile	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/arch/mips/Makefile	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/Makefile	2012-06-02 20:35:49.000000000 +0200
 @@ -76,6 +76,7 @@
  all-$(CONFIG_BOOT_ELF32)	:= $(vmlinux-32)
  all-$(CONFIG_BOOT_ELF64)	:= $(vmlinux-64)
@@ -44,7 +44,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/Makefile linux-2.6.39.4/arch/mips/Makefi
  endef
 diff -Nur linux-2.6.39.4.orig/arch/mips/bcm47xx/Makefile linux-2.6.39.4/arch/mips/bcm47xx/Makefile
 --- linux-2.6.39.4.orig/arch/mips/bcm47xx/Makefile	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/arch/mips/bcm47xx/Makefile	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/bcm47xx/Makefile	2012-06-02 20:35:49.000000000 +0200
 @@ -3,4 +3,4 @@
  # under Linux.
  #
@@ -53,7 +53,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/bcm47xx/Makefile linux-2.6.39.4/arch/mip
 +obj-y := gpio.o irq.o nvram.o prom.o serial.o setup.o time.o platform.o
 diff -Nur linux-2.6.39.4.orig/arch/mips/bcm47xx/platform.c linux-2.6.39.4/arch/mips/bcm47xx/platform.c
 --- linux-2.6.39.4.orig/arch/mips/bcm47xx/platform.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.39.4/arch/mips/bcm47xx/platform.c	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/bcm47xx/platform.c	2012-06-02 20:35:49.000000000 +0200
 @@ -0,0 +1,146 @@
 +/*
 + * This file is subject to the terms and conditions of the GNU General Public
@@ -203,8 +203,16 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/bcm47xx/platform.c linux-2.6.39.4/arch/m
 +device_initcall(bcm47xx_register_devices);
 diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/Makefile linux-2.6.39.4/arch/mips/boot/compressed/Makefile
 --- linux-2.6.39.4.orig/arch/mips/boot/compressed/Makefile	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/arch/mips/boot/compressed/Makefile	2012-01-17 20:35:09.000000000 +0100
-@@ -58,8 +58,13 @@
++++ linux-2.6.39.4/arch/mips/boot/compressed/Makefile	2012-06-02 20:37:43.000000000 +0200
+@@ -44,6 +44,7 @@
+ tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
+ tool_$(CONFIG_KERNEL_LZMA)    = lzma
+ tool_$(CONFIG_KERNEL_LZO)     = lzo
++tool_$(CONFIG_KERNEL_XZ)      = xzkern
+ 
+ targets += vmlinux.bin.z
+ $(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
+@@ -58,8 +59,13 @@
  # Calculate the load address of the compressed kernel image
  hostprogs-y := calc_vmlinuz_load_addr
  
@@ -218,7 +226,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/Makefile linux-2.6.39.4/
  
  vmlinuzobjs-y += $(obj)/piggy.o
  
-@@ -105,4 +110,12 @@
+@@ -105,4 +111,12 @@
  vmlinuz.srec: vmlinuz
  	$(call cmd,objcopy)
  
@@ -232,9 +240,41 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/Makefile linux-2.6.39.4/
 +	$(LD) $(LDFLAGS) -T arch/mips/boot/compressed/selfreloc.lds arch/mips/boot/compressed/selfreloc.o -o $@
 +
 +clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec,elf} $(objtree)/arch/mips/boot/compressed/selfreloc.{o,lds}
+diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/decompress.c linux-2.6.39.4/arch/mips/boot/compressed/decompress.c
+--- linux-2.6.39.4.orig/arch/mips/boot/compressed/decompress.c	2011-08-03 21:43:28.000000000 +0200
++++ linux-2.6.39.4/arch/mips/boot/compressed/decompress.c	2012-06-02 20:39:09.000000000 +0200
+@@ -43,7 +43,7 @@
+ /* activate the code for pre-boot environment */
+ #define STATIC static
+ 
+-#ifdef CONFIG_KERNEL_GZIP
++#if defined(CONFIG_KERNEL_GZIP) || defined(CONFIG_KERNEL_XZ)
+ void *memcpy(void *dest, const void *src, size_t n)
+ {
+ 	int i;
+@@ -54,6 +54,8 @@
+ 		d[i] = s[i];
+ 	return dest;
+ }
++#endif
++#ifdef CONFIG_KERNEL_GZIP
+ #include "../../../../lib/decompress_inflate.c"
+ #endif
+ 
+@@ -78,6 +80,10 @@
+ #include "../../../../lib/decompress_unlzo.c"
+ #endif
+ 
++#ifdef CONFIG_KERNEL_XZ
++#include "../../../../lib/decompress_unxz.c"
++#endif
++
+ void decompress_kernel(unsigned long boot_heap_start)
+ {
+ 	unsigned long zimage_start, zimage_size;
 diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.S linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.S
 --- linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.S	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.S	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.S	2012-06-02 20:35:49.000000000 +0200
 @@ -0,0 +1,54 @@
 +/*-
 + * written 2011 by Thorsten Glaser <tg@freewrt.org> based on
@@ -292,7 +332,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.S linux-2.6.39
 +imgend:
 diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.lds.S linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.lds.S
 --- linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.lds.S	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.lds.S	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/boot/compressed/selfreloc.lds.S	2012-06-02 20:35:49.000000000 +0200
 @@ -0,0 +1,39 @@
 +/*-
 + * written 2010 by Thorsten Glaser <tg@debian.org> based on
@@ -335,7 +375,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/selfreloc.lds.S linux-2.
 +}
 diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/uart-16550.c linux-2.6.39.4/arch/mips/boot/compressed/uart-16550.c
 --- linux-2.6.39.4.orig/arch/mips/boot/compressed/uart-16550.c	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/arch/mips/boot/compressed/uart-16550.c	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/arch/mips/boot/compressed/uart-16550.c	2012-06-02 20:35:49.000000000 +0200
 @@ -18,6 +18,11 @@
  #define PORT(offset) (CKSEG1ADDR(AR7_REGS_UART0) + (4 * offset))
  #endif
@@ -350,7 +390,7 @@ diff -Nur linux-2.6.39.4.orig/arch/mips/boot/compressed/uart-16550.c linux-2.6.3
  #endif
 diff -Nur linux-2.6.39.4.orig/drivers/ssb/driver_mipscore.c linux-2.6.39.4/drivers/ssb/driver_mipscore.c
 --- linux-2.6.39.4.orig/drivers/ssb/driver_mipscore.c	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/drivers/ssb/driver_mipscore.c	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/drivers/ssb/driver_mipscore.c	2012-06-02 20:35:49.000000000 +0200
 @@ -190,10 +190,11 @@
  {
  	struct ssb_bus *bus = mcore->dev->bus;
@@ -366,7 +406,7 @@ diff -Nur linux-2.6.39.4.orig/drivers/ssb/driver_mipscore.c linux-2.6.39.4/drive
  			mcore->flash_buswidth = 1;
 diff -Nur linux-2.6.39.4.orig/init/Kconfig linux-2.6.39.4/init/Kconfig
 --- linux-2.6.39.4.orig/init/Kconfig	2011-08-03 21:43:28.000000000 +0200
-+++ linux-2.6.39.4/init/Kconfig	2012-01-17 20:35:09.000000000 +0100
++++ linux-2.6.39.4/init/Kconfig	2012-06-02 20:36:11.000000000 +0200
 @@ -156,6 +156,7 @@
  config KERNEL_GZIP
  	bool "Gzip"
@@ -391,7 +431,15 @@ diff -Nur linux-2.6.39.4.orig/init/Kconfig linux-2.6.39.4/init/Kconfig
  	help
  	  The most recent compression algorithm.
  	  Its ratio is best, decompression speed is between the other
-@@ -197,6 +200,7 @@
+@@ -182,6 +185,7 @@
+ config KERNEL_XZ
+ 	bool "XZ"
+ 	depends on HAVE_KERNEL_XZ
++	select DECOMPRESS_XZ
+ 	help
+ 	  XZ uses the LZMA2 algorithm and instruction set specific
+ 	  BCJ filters which can improve compression ratio of executable
+@@ -197,6 +201,7 @@
  config KERNEL_LZO
  	bool "LZO"
  	depends on HAVE_KERNEL_LZO
@@ -399,3 +447,19 @@ diff -Nur linux-2.6.39.4.orig/init/Kconfig linux-2.6.39.4/init/Kconfig
  	help
  	  Its compression ratio is the poorest among the 4. The kernel
  	  size is about 10% bigger than gzip; however its speed
+diff -Nur linux-2.6.39.4.orig/lib/xz/xz_stream.h linux-2.6.39.4/lib/xz/xz_stream.h
+--- linux-2.6.39.4.orig/lib/xz/xz_stream.h	2011-08-03 21:43:28.000000000 +0200
++++ linux-2.6.39.4/lib/xz/xz_stream.h	2012-06-02 20:40:18.000000000 +0200
+@@ -40,7 +40,12 @@
+  * compressed size of the file to less than 256 MiB and may also weaken
+  * error detection slightly.
+  */
++
++#ifdef __mips__
++typedef uint32_t vli_type;
++#else
+ typedef uint64_t vli_type;
++#endif
+ 
+ #define VLI_MAX ((vli_type)-1 / 2)
+ #define VLI_UNKNOWN ((vli_type)-1)