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https://github.com/edk2-porting/linux-next.git
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f8f02ca73c
vmlinux.lds.S doesn't do anything special with literals, so instead of keeping them separate put them into the corresponding text sections. Drop explicit .literal sections from the vmlinux.lds.S, use standard section macros. Mark literal pool locations in the assembly sources. Unfortunately assembler doesn't put literals into .init sections and external libgcc may still have .literal sections, so sed transformation to the linker script is still needed. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
112 lines
3.2 KiB
Makefile
112 lines
3.2 KiB
Makefile
#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 2001 - 2005 Tensilica Inc.
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# Copyright (C) 2014 Cadence Design Systems Inc.
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture
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# Core configuration.
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# (Use VAR=<xtensa_config> to use another default compiler.)
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variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
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VARIANT = $(variant-y)
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export VARIANT
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# Test for cross compiling
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ifneq ($(VARIANT),)
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COMPILE_ARCH = $(shell uname -m)
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ifneq ($(COMPILE_ARCH), xtensa)
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ifndef CROSS_COMPILE
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CROSS_COMPILE = xtensa_$(VARIANT)-
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endif
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endif
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endif
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# Platform configuration
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platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
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platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
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platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA) := xtfpga
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PLATFORM = $(platform-y)
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export PLATFORM
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# temporarily until string.h is fixed
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KBUILD_CFLAGS += -ffreestanding -D__linux__
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KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
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KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
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KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
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KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
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ifneq ($(CONFIG_LD_NO_RELAX),)
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LDFLAGS := --no-relax
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endif
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ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
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CHECKFLAGS += -D__XTENSA_EB__
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KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
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endif
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ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
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CHECKFLAGS += -D__XTENSA_EL__
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KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
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endif
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vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
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plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
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ifeq ($(KBUILD_SRC),)
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KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
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else
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KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
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endif
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KBUILD_DEFCONFIG := iss_defconfig
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# Only build variant and/or platform if it includes a Makefile
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buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
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buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
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# Find libgcc.a
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LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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head-y := arch/xtensa/kernel/head.o
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core-y += arch/xtensa/kernel/ arch/xtensa/mm/
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core-y += $(buildvar) $(buildplf)
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libs-y += arch/xtensa/lib/ $(LIBGCC)
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drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/
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ifneq ($(CONFIG_BUILTIN_DTB),"")
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core-$(CONFIG_OF) += arch/xtensa/boot/dts/
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endif
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boot := arch/xtensa/boot
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all Image zImage uImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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%.dtb:
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$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
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dtbs: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts
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define archhelp
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@echo '* Image - Kernel ELF image with reset vector'
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@echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
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@echo '* uImage - U-Boot wrapped image'
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@echo ' dtbs - Build device tree blobs for enabled boards'
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endef
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