| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
| # |
| |
| KBUILD_DEFCONFIG := nsim_hs_defconfig |
| |
| ifeq ($(CROSS_COMPILE),) |
| CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-) |
| endif |
| |
| cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__ |
| cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7 |
| cflags-$(CONFIG_ISA_ARCV2) += -mcpu=hs38 |
| |
| ifdef CONFIG_ARC_CURR_IN_REG |
| # For a global register defintion, make sure it gets passed to every file |
| # We had a customer reported bug where some code built in kernel was NOT using |
| # any kernel headers, and missing the r25 global register |
| # Can't do unconditionally because of recursive include issues |
| # due to <linux/thread_info.h> |
| LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h |
| endif |
| |
| cflags-y += -fsection-anchors |
| |
| cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock |
| cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape |
| |
| ifdef CONFIG_ISA_ARCV2 |
| |
| ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS |
| cflags-y += -munaligned-access |
| else |
| cflags-y += -mno-unaligned-access |
| endif |
| |
| ifndef CONFIG_ARC_HAS_LL64 |
| cflags-y += -mno-ll64 |
| endif |
| |
| ifndef CONFIG_ARC_HAS_DIV_REM |
| cflags-y += -mno-div-rem |
| endif |
| |
| endif |
| |
| cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) |
| cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) |
| |
| ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE |
| # Generic build system uses -O2, we want -O3 |
| # Note: No need to add to cflags-y as that happens anyways |
| # |
| # Disable the false maybe-uninitialized warings gcc spits out at -O3 |
| ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) |
| endif |
| |
| # small data is default for elf32 tool-chain. If not usable, disable it |
| # This also allows repurposing GP as scratch reg to gcc reg allocator |
| disable_small_data := y |
| cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp |
| |
| cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian |
| ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB |
| |
| LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name) |
| |
| # Modules with short calls might break for calls into builtin-kernel |
| KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode |
| |
| # Finally dump eveything into kernel build system |
| KBUILD_CFLAGS += $(cflags-y) |
| KBUILD_AFLAGS += $(KBUILD_CFLAGS) |
| KBUILD_LDFLAGS += $(ldflags-y) |
| |
| head-y := arch/arc/kernel/head.o |
| |
| # See arch/arc/Kbuild for content of core part of the kernel |
| core-y += arch/arc/ |
| |
| # w/o this dtb won't embed into kernel binary |
| core-y += arch/arc/boot/dts/ |
| |
| core-y += arch/arc/plat-sim/ |
| core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ |
| core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ |
| core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ |
| core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ |
| |
| ifdef CONFIG_ARC_PLAT_EZNPS |
| KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include |
| endif |
| |
| drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ |
| |
| libs-y += arch/arc/lib/ $(LIBGCC) |
| |
| boot := arch/arc/boot |
| |
| #default target for make without any arguments. |
| KBUILD_IMAGE := $(boot)/bootpImage |
| |
| all: bootpImage |
| bootpImage: vmlinux |
| |
| boot_targets += uImage uImage.bin uImage.gz |
| |
| $(boot_targets): vmlinux |
| $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
| |
| archclean: |
| $(Q)$(MAKE) $(clean)=$(boot) |
