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ARM: 7001/2: Wire up support for the XZ decompressor 

Wire up support for the XZ decompressor

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Imre Kaloz 2012-01-26 13:08:57 +01:00 committed by Russell King
parent f5f5195487
commit a7f464f3db
5 changed files with 27 additions and 3 deletions
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1
arch/arm/Kconfig
View File

@ -21,6 +21,7 @@ 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

2
arch/arm/boot/compressed/.gitignore vendored
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@ -1,8 +1,10 @@
ashldi3.S
font.c
lib1funcs.S
piggy.gzip
piggy.lzo
piggy.lzma
piggy.xzkern
vmlinux
vmlinux.lds

15
arch/arm/boot/compressed/Makefile
View File

@ -92,6 +92,7 @@ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
suffix_$(CONFIG_KERNEL_GZIP) = gzip
suffix_$(CONFIG_KERNEL_LZO) = lzo
suffix_$(CONFIG_KERNEL_LZMA) = lzma
suffix_$(CONFIG_KERNEL_XZ) = xzkern
# Borrowed libfdt files for the ATAG compatibility mode
@ -112,10 +113,12 @@ endif
targets := vmlinux vmlinux.lds \
piggy.$(suffix_y) piggy.$(suffix_y).o \
lib1funcs.o lib1funcs.S font.o font.c head.o misc.o $(OBJS)
lib1funcs.o lib1funcs.S 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 $(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)
@ -151,6 +154,12 @@ lib1funcs = $(obj)/lib1funcs.o
$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S
$(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
@ -172,7 +181,7 @@ if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
fi
$(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)

6
arch/arm/boot/compressed/decompress.c
View File

@ -44,6 +44,12 @@ extern void error(char *);
#include "../../../../lib/decompress_unlzma.c"
#endif
#ifdef CONFIG_KERNEL_XZ
#define memmove memmove
#define memcpy memcpy
#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);

6
arch/arm/boot/compressed/piggy.xzkern.S Normal file
View File

@ -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: