blob: 8447eed836efd0fb82106638286842809a388290 [file] [log] [blame]
Vineet Guptacfdbc2e2013-01-18 15:12:20 +05301#
2# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3#
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.
7#
8
9UTS_MACHINE := arc
10
Vineet Guptaaf4c3ae2013-03-21 12:22:06 +053011ifeq ($(CROSS_COMPILE),)
Vineet Gupta89a26922016-03-11 12:47:58 +053012ifndef CONFIG_CPU_BIG_ENDIAN
Vineet Gupta7c42eaf2015-05-18 12:50:02 +053013CROSS_COMPILE := arc-linux-
Vineet Gupta89a26922016-03-11 12:47:58 +053014else
15CROSS_COMPILE := arceb-linux-
16endif
Vineet Guptaaf4c3ae2013-03-21 12:22:06 +053017endif
18
Vineet Gupta7a70bf72014-12-12 10:27:50 +053019KBUILD_DEFCONFIG := nsim_700_defconfig
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053020
Alexey Brodkine7a03932018-06-01 14:34:33 +030021cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
Vineet Gupta40b8ad82015-06-28 20:22:01 +053022cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7
23cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053024
Vineet Gupta20d78032016-02-25 22:04:38 +053025is_700 = $(shell $(CC) -dM -E - < /dev/null | grep -q "ARC700" && echo 1 || echo 0)
26
27ifdef CONFIG_ISA_ARCOMPACT
28ifeq ($(is_700), 0)
29 $(error Toolchain not configured for ARCompact builds)
30endif
31endif
32
33ifdef CONFIG_ISA_ARCV2
34ifeq ($(is_700), 1)
35 $(error Toolchain not configured for ARCv2 builds)
36endif
37endif
38
Vineet Gupta080c3742013-02-11 19:52:57 +053039ifdef CONFIG_ARC_CURR_IN_REG
40# For a global register defintion, make sure it gets passed to every file
41# We had a customer reported bug where some code built in kernel was NOT using
42# any kernel headers, and missing the r25 global register
Vineet Gupta82357032013-06-01 12:55:42 +053043# Can't do unconditionally because of recursive include issues
Vineet Gupta080c3742013-02-11 19:52:57 +053044# due to <linux/thread_info.h>
45LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
46endif
47
Vineet Gupta5a45da02013-05-25 14:03:25 +053048upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
49atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
Vineet Gupta5a45da02013-05-25 14:03:25 +053050
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053051cflags-$(atleast_gcc44) += -fsection-anchors
52
Vineet Gupta76a08402016-11-08 08:47:14 -080053cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
54cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
55
Alexey Brodkind05a76a2015-07-16 21:45:38 +030056ifdef CONFIG_ISA_ARCV2
57
Vineet Gupta1f6ccff2013-05-13 18:30:41 +053058ifndef CONFIG_ARC_HAS_LL64
Alexey Brodkind05a76a2015-07-16 21:45:38 +030059cflags-y += -mno-ll64
60endif
61
62ifndef CONFIG_ARC_HAS_DIV_REM
63cflags-y += -mno-div-rem
64endif
65
Vineet Gupta1f6ccff2013-05-13 18:30:41 +053066endif
67
Vineet Gupta5a205a32016-09-16 17:23:26 -070068cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
69cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi)
Vineet Gupta6716dbb2013-06-24 21:22:06 +053070
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053071ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
72# Generic build system uses -O2, we want -O3
Vineet Gupta97709062015-06-18 13:54:01 +053073# Note: No need to add to cflags-y as that happens anyways
Arnd Bergmanna76bcf52016-11-10 17:44:44 +010074#
75# Disable the false maybe-uninitialized warings gcc spits out at -O3
76ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053077endif
78
79# small data is default for elf32 tool-chain. If not usable, disable it
80# This also allows repurposing GP as scratch reg to gcc reg allocator
81disable_small_data := y
82cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
83
84cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
85ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
86
Vineet Gupta5a45da02013-05-25 14:03:25 +053087# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053088# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
Vineet Gupta5a45da02013-05-25 14:03:25 +053089# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
90ldflags-$(upto_gcc44) += -marclinux
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053091
Vineet Gupta68d8fee2014-08-07 16:24:47 -070092LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053093
94# Modules with short calls might break for calls into builtin-kernel
Vineet Gupta07fd7d42015-12-21 12:38:01 +053095KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
Vineet Guptacfdbc2e2013-01-18 15:12:20 +053096
97# Finally dump eveything into kernel build system
98KBUILD_CFLAGS += $(cflags-y)
99KBUILD_AFLAGS += $(KBUILD_CFLAGS)
100LDFLAGS += $(ldflags-y)
101
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530102head-y := arch/arc/kernel/head.o
103
104# See arch/arc/Kbuild for content of core part of the kernel
105core-y += arch/arc/
106
Vineet Gupta999159a2013-01-22 17:00:52 +0530107# w/o this dtb won't embed into kernel binary
108core-y += arch/arc/boot/dts/
109
Vineet Guptafd155792015-02-20 19:12:18 +0530110core-$(CONFIG_ARC_PLAT_SIM) += arch/arc/plat-sim/
111core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
Alexey Brodkin556cc1c2014-01-27 14:51:34 +0100112core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
Noam Camus966657892015-10-16 16:52:43 +0300113core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/
114
115ifdef CONFIG_ARC_PLAT_EZNPS
116KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
117endif
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530118
Vineet Gupta769bc1f2013-01-22 17:02:38 +0530119drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
120
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530121libs-y += arch/arc/lib/ $(LIBGCC)
122
Vineet Guptafb0990b2013-03-22 19:48:01 +0530123boot := arch/arc/boot
124
Andrea Gelmini25474762016-05-21 13:45:35 +0200125#default target for make without any arguments.
Vineet Guptafb0990b2013-03-22 19:48:01 +0530126KBUILD_IMAGE := bootpImage
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530127
128all: $(KBUILD_IMAGE)
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530129bootpImage: vmlinux
130
Vineet Gupta104058e2013-03-22 22:04:27 +0530131boot_targets += uImage uImage.bin uImage.gz
132
133$(boot_targets): vmlinux
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530134 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
135
Vineet Gupta999159a2013-01-22 17:00:52 +0530136%.dtb %.dtb.S %.dtb.o: scripts
137 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
138
139dtbs: scripts
Rob Herring10375cc2015-10-08 10:10:53 -0500140 $(Q)$(MAKE) $(build)=$(boot)/dts
Vineet Gupta999159a2013-01-22 17:00:52 +0530141
Vineet Guptacfdbc2e2013-01-18 15:12:20 +0530142archclean:
143 $(Q)$(MAKE) $(clean)=$(boot)