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26584853a4
Starting with ARMv6, the CPUs support the BE-8 variant of big-endian (byte-invariant). This patch adds the core support: - setting of the BE-8 mode via the CPSR.E register for both kernel and user threads - big-endian page table walking - REV used to rotate instructions read from memory during fault processing as they are still little-endian format - Kconfig and Makefile support for BE-8. The --be8 option must be passed to the final linking stage to convert the instructions to little-endian Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
114 lines
2.7 KiB
Makefile
114 lines
2.7 KiB
Makefile
#
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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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HEAD = head.o
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OBJS = misc.o
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FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
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#
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# Architecture dependencies
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#
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ifeq ($(CONFIG_ARCH_ACORN),y)
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OBJS += ll_char_wr.o font.o
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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_L7200),y)
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OBJS += head-l7200.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 ($(CONFIG_CPU_XSCALE),y)
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OBJS += head-xscale.o
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endif
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ifeq ($(CONFIG_PXA_SHARPSL),y)
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OBJS += head-sharpsl.o
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endif
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ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
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ifeq ($(CONFIG_CPU_CP15),y)
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OBJS += big-endian.o
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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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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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targets := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
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head.o misc.o $(OBJS)
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ifeq ($(CONFIG_FUNCTION_TRACER),y)
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ORIG_CFLAGS := $(KBUILD_CFLAGS)
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KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS))
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endif
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EXTRA_CFLAGS := -fpic -fno-builtin
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EXTRA_AFLAGS := -Wa,-march=all
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# Supply ZRELADDR, INITRD_PHYS and PARAMS_PHYS to the decompressor via
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# linker symbols. We only define initrd_phys and params_phys if the
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# machine class defined the corresponding makefile variable.
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LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
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ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
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LDFLAGS_vmlinux += --be8
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endif
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ifneq ($(INITRD_PHYS),)
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LDFLAGS_vmlinux += --defsym initrd_phys=$(INITRD_PHYS)
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endif
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ifneq ($(PARAMS_PHYS),)
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LDFLAGS_vmlinux += --defsym params_phys=$(PARAMS_PHYS)
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endif
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LDFLAGS_vmlinux += -p --no-undefined -X \
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$(shell $(CC) $(KBUILD_CFLAGS) --print-libgcc-file-name) -T
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# Don't allow any static data in misc.o, which
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# would otherwise mess up our GOT table
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CFLAGS_misc.o := -Dstatic=
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.o \
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$(addprefix $(obj)/, $(OBJS)) FORCE
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$(call if_changed,ld)
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@:
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$(obj)/piggy.gz: $(obj)/../Image FORCE
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$(call if_changed,gzip)
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$(obj)/piggy.o: $(obj)/piggy.gz FORCE
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CFLAGS_font.o := -Dstatic=
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$(obj)/font.c: $(FONTC)
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$(call cmd,shipped)
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$(obj)/vmlinux.lds: $(obj)/vmlinux.lds.in arch/arm/boot/Makefile .config
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@sed "$(SEDFLAGS)" < $< > $@
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