2 # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License version 2 as
6 # published by the Free Software Foundation.
11 KBUILD_DEFCONFIG := nsim_hs_defconfig
13 cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
14 cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7
15 cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs
17 ifdef CONFIG_ARC_CURR_IN_REG
18 # For a global register defintion, make sure it gets passed to every file
19 # We had a customer reported bug where some code built in kernel was NOT using
20 # any kernel headers, and missing the r25 global register
21 # Can't do unconditionally because of recursive include issues
22 # due to <linux/thread_info.h>
23 LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
26 upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
27 atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
29 cflags-$(atleast_gcc44) += -fsection-anchors
31 cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
32 cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
34 ifdef CONFIG_ISA_ARCV2
36 ifndef CONFIG_ARC_HAS_LL64
40 ifndef CONFIG_ARC_HAS_DIV_REM
41 cflags-y += -mno-div-rem
46 cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
47 cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi)
49 ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
50 # Generic build system uses -O2, we want -O3
51 # Note: No need to add to cflags-y as that happens anyways
53 # Disable the false maybe-uninitialized warings gcc spits out at -O3
54 ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
57 # small data is default for elf32 tool-chain. If not usable, disable it
58 # This also allows repurposing GP as scratch reg to gcc reg allocator
59 disable_small_data := y
60 cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
62 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
63 ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
65 # STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
66 # arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
67 # --build-id w/o "-marclinux". Default arc-elf32-ld is OK
68 ldflags-$(upto_gcc44) += -marclinux
70 LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
72 # Modules with short calls might break for calls into builtin-kernel
73 KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
75 # Finally dump eveything into kernel build system
76 KBUILD_CFLAGS += $(cflags-y)
77 KBUILD_AFLAGS += $(KBUILD_CFLAGS)
78 LDFLAGS += $(ldflags-y)
80 head-y := arch/arc/kernel/head.o
82 # See arch/arc/Kbuild for content of core part of the kernel
85 # w/o this dtb won't embed into kernel binary
86 core-y += arch/arc/boot/dts/
88 core-$(CONFIG_ARC_PLAT_SIM) += arch/arc/plat-sim/
89 core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
90 core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
91 core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/
93 ifdef CONFIG_ARC_PLAT_EZNPS
94 KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
97 drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
99 libs-y += arch/arc/lib/ $(LIBGCC)
101 boot := arch/arc/boot
103 #default target for make without any arguments.
104 KBUILD_IMAGE := bootpImage
109 boot_targets += uImage uImage.bin uImage.gz
111 PHONY += $(boot_targets)
112 $(boot_targets): vmlinux
113 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
115 %.dtb %.dtb.S %.dtb.o: scripts
116 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
119 $(Q)$(MAKE) $(build)=$(boot)/dts
122 $(Q)$(MAKE) $(clean)=$(boot)