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authorImre Kaloz <kaloz@openwrt.org>2011-07-07 10:26:16 +0000
committerImre Kaloz <kaloz@openwrt.org>2011-07-07 10:26:16 +0000
commitb15f8f765ad4fbff797cf33155f5fba28ba70af1 (patch)
treed4572f69b445cc080518bf3be9937e221cb2a7fc /target/linux/generic
parentd148dcce05ffa0a3b0b57b1f026c79fa8fe3f639 (diff)
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add support for and switch to XZ compressed kernels on ARM
SVN-Revision: 27518
Diffstat (limited to 'target/linux/generic')
-rw-r--r--target/linux/generic/config-3.04
-rw-r--r--target/linux/generic/patches-3.0/006-arm_kernel_xz_support.patch107
2 files changed, 109 insertions, 2 deletions
diff --git a/target/linux/generic/config-3.0 b/target/linux/generic/config-3.0
index 450421ea67..0d1eec1e6c 100644
--- a/target/linux/generic/config-3.0
+++ b/target/linux/generic/config-3.0
@@ -1201,9 +1201,9 @@ CONFIG_JOLIET=y
# CONFIG_KARMA_PARTITION is not set
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_GZIP is not set
-CONFIG_KERNEL_LZMA=y
+# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_LZO is not set
-# CONFIG_KERNEL_XZ is not set
+CONFIG_KERNEL_XZ=y
# CONFIG_KEXEC is not set
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
diff --git a/target/linux/generic/patches-3.0/006-arm_kernel_xz_support.patch b/target/linux/generic/patches-3.0/006-arm_kernel_xz_support.patch
new file mode 100644
index 0000000000..776d175f8b
--- /dev/null
+++ b/target/linux/generic/patches-3.0/006-arm_kernel_xz_support.patch
@@ -0,0 +1,107 @@
+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
+
+diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
+index c2e5f3d..489fe16 100644
+--- 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
+diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
+index 23aad07..e5db34e 100644
+--- a/arch/arm/boot/compressed/Makefile
++++ b/arch/arm/boot/compressed/Makefile
+@@ -82,13 +82,14 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
+ 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 $(OBJS)
+
+ # Make sure files are removed during clean
+-extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
++extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern lib1funcs.S ashldi3.S
+
+ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+ ORIG_CFLAGS := $(KBUILD_CFLAGS)
+@@ -133,8 +134,14 @@ bad_syms=$$($(CROSS_COMPILE)nm $@ | sed -n 's/^.\{8\} [bc] \(.*\)/\1/p') && \
+ ( echo "following symbols must have non local/private scope:" >&2; \
+ echo "$$bad_syms" >&2; rm -f $@; false )
+
++# 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
+ $(call if_changed,ld)
+ @$(check_for_bad_syms)
+
+diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
+index 07be5a2..0ecd8b4 100644
+--- 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);
+diff --git a/arch/arm/boot/compressed/piggy.xzkern.S b/arch/arm/boot/compressed/piggy.xzkern.S
+new file mode 100644
+index 0000000..5703f30
+--- /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:
+diff --git a/lib/xz/xz_dec_stream.c b/lib/xz/xz_dec_stream.c
+index ac809b1..9a60cc2 100644
+--- 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 {
+--
+1.7.1
+