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121 lines
3.4 KiB
121 lines
3.4 KiB
# SPDX-License-Identifier: GPL-2.0-only |
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# |
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# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
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# |
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KBUILD_DEFCONFIG := haps_hs_smp_defconfig |
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ifeq ($(CROSS_COMPILE),) |
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CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-) |
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endif |
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cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ |
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tune-mcpu-def-$(CONFIG_ISA_ARCOMPACT) := -mcpu=arc700 |
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tune-mcpu-def-$(CONFIG_ISA_ARCV2) := -mcpu=hs38 |
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ifeq ($(CONFIG_ARC_TUNE_MCPU),"") |
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cflags-y += $(tune-mcpu-def-y) |
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else |
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tune-mcpu := $(shell echo $(CONFIG_ARC_TUNE_MCPU)) |
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tune-mcpu-ok := $(call cc-option-yn, $(tune-mcpu)) |
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ifeq ($(tune-mcpu-ok),y) |
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cflags-y += $(tune-mcpu) |
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else |
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# The flag provided by 'CONFIG_ARC_TUNE_MCPU' option isn't known by this compiler |
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# (probably the compiler is too old). Use ISA default mcpu flag instead as a safe option. |
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$(warning ** WARNING ** CONFIG_ARC_TUNE_MCPU flag '$(tune-mcpu)' is unknown, fallback to '$(tune-mcpu-def-y)') |
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cflags-y += $(tune-mcpu-def-y) |
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endif |
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endif |
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ifdef CONFIG_ARC_CURR_IN_REG |
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# For a global register defintion, make sure it gets passed to every file |
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# We had a customer reported bug where some code built in kernel was NOT using |
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# any kernel headers, and missing the r25 global register |
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# Can't do unconditionally because of recursive include issues |
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# due to <linux/thread_info.h> |
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LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h |
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endif |
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cflags-y += -fsection-anchors |
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cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock |
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cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape |
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ifdef CONFIG_ISA_ARCV2 |
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ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS |
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cflags-y += -munaligned-access |
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else |
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cflags-y += -mno-unaligned-access |
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endif |
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ifndef CONFIG_ARC_HAS_LL64 |
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cflags-y += -mno-ll64 |
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endif |
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ifndef CONFIG_ARC_HAS_DIV_REM |
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cflags-y += -mno-div-rem |
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endif |
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endif |
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cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) |
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cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) |
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# small data is default for elf32 tool-chain. If not usable, disable it |
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# This also allows repurposing GP as scratch reg to gcc reg allocator |
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disable_small_data := y |
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cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp |
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian |
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ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB |
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LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) |
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# Modules with short calls might break for calls into builtin-kernel |
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KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode |
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# Finally dump eveything into kernel build system |
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KBUILD_CFLAGS += $(cflags-y) |
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KBUILD_AFLAGS += $(KBUILD_CFLAGS) |
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KBUILD_LDFLAGS += $(ldflags-y) |
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head-y := arch/arc/kernel/head.o |
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# See arch/arc/Kbuild for content of core part of the kernel |
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core-y += arch/arc/ |
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# w/o this dtb won't embed into kernel binary |
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core-y += arch/arc/boot/dts/ |
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core-y += arch/arc/plat-sim/ |
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core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ |
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core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ |
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core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ |
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libs-y += arch/arc/lib/ $(LIBGCC) |
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boot := arch/arc/boot |
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boot_targets := uImage.bin uImage.gz uImage.lzma |
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PHONY += $(boot_targets) |
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$(boot_targets): vmlinux |
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
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uimage-default-y := uImage.bin |
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uimage-default-$(CONFIG_KERNEL_GZIP) := uImage.gz |
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uimage-default-$(CONFIG_KERNEL_LZMA) := uImage.lzma |
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PHONY += uImage |
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uImage: $(uimage-default-y) |
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@ln -sf $< $(boot)/uImage |
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@$(kecho) ' Image $(boot)/uImage is ready' |
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CLEAN_FILES += $(boot)/uImage |
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archclean: |
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$(Q)$(MAKE) $(clean)=$(boot)
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