kernel: add support for linux 3.2.1

[openwrt.git] / target / linux / generic / patches-3.2 / 006-arm_kernel_xz_support.patch

diff --git a/target/linux/generic/patches-3.2/006-arm_kernel_xz_support.patch b/target/linux/generic/patches-3.2/006-arm_kernel_xz_support.patch
new file mode 100644 (file)
index 0000000..42ef57c
--- /dev/null
+++ b/target/linux/generic/patches-3.2/006-arm_kernel_xz_support.patch
@@ -0,0 +1,94 @@
+From 2d303b4683145f7dbc918bd14d04e1396581b2ce Mon Sep 17 00:00:00 2001
+From: Imre Kaloz <kaloz@openwrt.org>
+Date: Thu, 7 Jul 2011 12:05:21 +0200
+Subject: [PATCH] ARM: support XZ compressed kernels
+
+Wire up support for the XZ decompressor
+
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+---
+ arch/arm/Kconfig                        |    1 +
+ arch/arm/boot/compressed/Makefile       |   11 +++++++++--
+ arch/arm/boot/compressed/decompress.c   |    4 ++++
+ arch/arm/boot/compressed/piggy.xzkern.S |    6 ++++++
+ lib/xz/xz_dec_stream.c                  |    1 +
+ 5 files changed, 21 insertions(+), 2 deletions(-)
+ create mode 100644 arch/arm/boot/compressed/piggy.xzkern.S
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -20,6 +20,7 @@ config ARM
+       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
+--- a/arch/arm/boot/compressed/Makefile
++++ b/arch/arm/boot/compressed/Makefile
+@@ -92,6 +92,7 @@ SEDFLAGS     = s/TEXT_START/$(ZTEXTADDR)/;s/
+ suffix_$(CONFIG_KERNEL_GZIP) = gzip
+ suffix_$(CONFIG_KERNEL_LZO)  = lzo
+ suffix_$(CONFIG_KERNEL_LZMA) = lzma
++suffix_$(CONFIG_KERNEL_XZ)   = xzkern
+ 
+ # Borrowed libfdt files for the ATAG compatibility mode
+ 
+@@ -115,7 +116,7 @@ targets       := vmlinux vmlinux.lds \
+                lib1funcs.o lib1funcs.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 $(libfdt) $(libfdt_hdrs)
++extra-y       += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs)
+ 
+ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+ ORIG_CFLAGS := $(KBUILD_CFLAGS)
+@@ -170,8 +171,14 @@ if [ $(words $(ZRELADDR)) -gt 1 -a "$(CO
+       false; \
+ fi
+ 
++# For __aeabi_llsl
++ashldi3 = $(obj)/ashldi3.o
++
++$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S FORCE
++      $(call cmd,shipped)
++
+ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
+-              $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
++              $(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
+       @$(check_for_multiple_zreladdr)
+       $(call if_changed,ld)
+       @$(check_for_bad_syms)
+--- a/arch/arm/boot/compressed/decompress.c
++++ b/arch/arm/boot/compressed/decompress.c
+@@ -44,6 +44,10 @@ extern void error(char *);
+ #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);
+--- /dev/null
++++ b/arch/arm/boot/compressed/piggy.xzkern.S
+@@ -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:
+--- a/lib/xz/xz_dec_stream.c
++++ b/lib/xz/xz_dec_stream.c
+@@ -9,6 +9,7 @@
+ 
+ #include "xz_private.h"
+ #include "xz_stream.h"
++#include <linux/kernel.h>
+ 
+ /* Hash used to validate the Index field */
+ struct xz_dec_hash {