2005-04-17 06:20:36 +08:00
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#
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# linux/arch/arm/boot/compressed/Makefile
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#
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# create a compressed vmlinuz image from the original vmlinux
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#
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2010-07-05 21:56:50 +08:00
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AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
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2005-04-17 06:20:36 +08:00
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HEAD = head.o
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ARM: Eliminate decompressor -Dstatic= PIC hack
We used to build decompressors with -Dstatic= to avoid any local data
being generated. The problem is that local data generates GOTOFF
relocations, which means we can't relocate the data relative to the
text segment.
Global data, on the other hand, goes through the GOT, and can be
relocated anywhere.
Unfortunately, with the new decompressors, this presents a problem
since they declare static data within functions, and this leads to
stack overflow.
Fix this by separating out the decompressor code into a separate file,
and removing 'static' from BSS data in misc.c.
Also, discard the .data section - this means that should we end up
with read/write initialized data, the decompressor will fail to link
and the problem will be obvious.
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-25 20:14:40 +08:00
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OBJS = misc.o decompress.o
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2007-06-04 01:54:42 +08:00
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FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
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2005-04-17 06:20:36 +08:00
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#
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# Architecture dependencies
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#
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ifeq ($(CONFIG_ARCH_ACORN),y)
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2007-06-04 01:54:42 +08:00
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OBJS += ll_char_wr.o font.o
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2005-04-17 06:20:36 +08:00
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endif
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ifeq ($(CONFIG_ARCH_SHARK),y)
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OBJS += head-shark.o ofw-shark.o
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endif
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ifeq ($(CONFIG_ARCH_P720T),y)
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# Borrow this code from SA1100
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OBJS += head-sa1100.o
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endif
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ifeq ($(CONFIG_ARCH_SA1100),y)
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OBJS += head-sa1100.o
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endif
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ifeq ($(CONFIG_CPU_XSCALE),y)
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OBJS += head-xscale.o
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endif
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2010-06-23 09:27:32 +08:00
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ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
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2005-04-17 06:20:36 +08:00
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OBJS += head-sharpsl.o
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endif
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2009-05-30 21:00:18 +08:00
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ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
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2006-09-26 16:36:37 +08:00
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ifeq ($(CONFIG_CPU_CP15),y)
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2005-04-17 06:20:36 +08:00
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OBJS += big-endian.o
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2006-09-26 16:36:37 +08:00
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else
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# The endian should be set by h/w design.
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endif
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2005-04-17 06:20:36 +08:00
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endif
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#
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# We now have a PIC decompressor implementation. Decompressors running
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# from RAM should not define ZTEXTADDR. Decompressors running directly
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# from ROM or Flash must define ZTEXTADDR (preferably via the config)
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# FIXME: Previous assignment to ztextaddr-y is lost here. See SHARK
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ifeq ($(CONFIG_ZBOOT_ROM),y)
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ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
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ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
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else
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ZTEXTADDR := 0
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ZBSSADDR := ALIGN(4)
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endif
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SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
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2010-01-09 06:42:43 +08:00
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suffix_$(CONFIG_KERNEL_GZIP) = gzip
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suffix_$(CONFIG_KERNEL_LZO) = lzo
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2010-04-03 18:40:28 +08:00
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suffix_$(CONFIG_KERNEL_LZMA) = lzma
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2010-01-09 06:42:43 +08:00
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targets := vmlinux vmlinux.lds \
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piggy.$(suffix_y) piggy.$(suffix_y).o \
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font.o font.c head.o misc.o $(OBJS)
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2008-05-31 16:53:50 +08:00
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2010-07-28 12:46:21 +08:00
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# Make sure files are removed during clean
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extra-y += piggy.gzip piggy.lzo piggy.lzma lib1funcs.S
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2008-10-07 07:06:12 +08:00
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ifeq ($(CONFIG_FUNCTION_TRACER),y)
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2008-05-31 16:53:50 +08:00
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ORIG_CFLAGS := $(KBUILD_CFLAGS)
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KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
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endif
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2007-07-11 18:29:28 +08:00
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EXTRA_CFLAGS := -fpic -fno-builtin
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2008-09-09 20:56:45 +08:00
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EXTRA_AFLAGS := -Wa,-march=all
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2005-04-17 06:20:36 +08:00
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2009-05-30 21:00:18 +08:00
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ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
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LDFLAGS_vmlinux += --be8
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endif
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2010-01-09 06:42:43 +08:00
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# ?
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LDFLAGS_vmlinux += -p
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# Report unresolved symbol references
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LDFLAGS_vmlinux += --no-undefined
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# Delete all temporary local symbols
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LDFLAGS_vmlinux += -X
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# Next argument is a linker script
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LDFLAGS_vmlinux += -T
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# For __aeabi_uidivmod
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lib1funcs = $(obj)/lib1funcs.o
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$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
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$(call cmd,shipped)
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2005-04-17 06:20:36 +08:00
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2010-01-09 06:42:43 +08:00
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
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$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
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2005-04-17 06:20:36 +08:00
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$(call if_changed,ld)
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@:
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2010-01-09 06:42:43 +08:00
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$(obj)/piggy.$(suffix_y): $(obj)/../Image FORCE
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$(call if_changed,$(suffix_y))
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2005-04-17 06:20:36 +08:00
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2010-01-09 06:42:43 +08:00
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$(obj)/piggy.$(suffix_y).o: $(obj)/piggy.$(suffix_y) FORCE
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2005-04-17 06:20:36 +08:00
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2007-06-04 01:54:42 +08:00
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CFLAGS_font.o := -Dstatic=
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$(obj)/font.c: $(FONTC)
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$(call cmd,shipped)
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2005-04-17 06:20:36 +08:00
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$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile .config
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@sed "$(SEDFLAGS)" < $< > $@
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