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Commit d7b081ac authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
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[S390] support XZ compressed kernel 



Add support for XZ compressed kernel. Same as on x86 and sh.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 3041b6ab

arch/s390/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ config S390 
	select HAVE_KERNEL_BZIP2

	select HAVE_KERNEL_LZMA

	select HAVE_KERNEL_LZO

	select HAVE_KERNEL_XZ

	select HAVE_GET_USER_PAGES_FAST

	select HAVE_ARCH_MUTEX_CPU_RELAX

	select ARCH_INLINE_SPIN_TRYLOCK

arch/s390/boot/compressed/Makefile

+5 −1
Original line number Diff line number Diff line
@@ -7,7 +7,8 @@ 
BITS := $(if $(CONFIG_64BIT),64,31)



targets	:= vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \

	   vmlinux.bin.lzma vmlinux.bin.lzo misc.o piggy.o sizes.h head$(BITS).o

	   vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo misc.o piggy.o \

	   sizes.h head$(BITS).o



KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2

KBUILD_CFLAGS += $(cflags-y)
@@ -48,6 +49,7 @@ suffix-$(CONFIG_KERNEL_GZIP) := gz 
suffix-$(CONFIG_KERNEL_BZIP2) := bz2

suffix-$(CONFIG_KERNEL_LZMA)  := lzma

suffix-$(CONFIG_KERNEL_LZO)  := lzo

suffix-$(CONFIG_KERNEL_XZ)  := xz



$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)

	$(call if_changed,gzip)
@@ -57,6 +59,8 @@ $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) 
	$(call if_changed,lzma)

$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)

	$(call if_changed,lzo)

$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)

	$(call if_changed,xzkern)



LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T

$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)

arch/s390/boot/compressed/misc.c

+5 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#undef memset

#undef memcpy

#undef memmove

#define memmove memmove

#define memzero(s, n) memset((s), 0, (n))



/* Symbols defined by linker scripts */
@@ -54,6 +55,10 @@ static unsigned long free_mem_end_ptr; 
#include "../../../../lib/decompress_unlzo.c"

#endif



#ifdef CONFIG_KERNEL_XZ

#include "../../../../lib/decompress_unxz.c"

#endif



extern _sclp_print_early(const char *);



int puts(const char *s)