Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 1 | # |
| 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 | |
Vineet Gupta | af4c3ae | 2013-03-21 12:22:06 +0530 | [diff] [blame] | 9 | ifeq ($(CROSS_COMPILE),) |
Vineet Gupta | 89a2692 | 2016-03-11 12:47:58 +0530 | [diff] [blame] | 10 | ifndef CONFIG_CPU_BIG_ENDIAN |
Vineet Gupta | 7c42eaf | 2015-05-18 12:50:02 +0530 | [diff] [blame] | 11 | CROSS_COMPILE := arc-linux- |
Vineet Gupta | 89a2692 | 2016-03-11 12:47:58 +0530 | [diff] [blame] | 12 | else |
| 13 | CROSS_COMPILE := arceb-linux- |
| 14 | endif |
Vineet Gupta | af4c3ae | 2013-03-21 12:22:06 +0530 | [diff] [blame] | 15 | endif |
| 16 | |
Vineet Gupta | 7a70bf7 | 2014-12-12 10:27:50 +0530 | [diff] [blame] | 17 | KBUILD_DEFCONFIG := nsim_700_defconfig |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 18 | |
Vineet Gupta | 1f6ccff | 2013-05-13 18:30:41 +0530 | [diff] [blame] | 19 | cflags-y += -fno-common -pipe -fno-builtin -D__linux__ |
Vineet Gupta | 40b8ad8 | 2015-06-28 20:22:01 +0530 | [diff] [blame] | 20 | cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7 |
| 21 | cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 22 | |
Vineet Gupta | 20d7803 | 2016-02-25 22:04:38 +0530 | [diff] [blame] | 23 | is_700 = $(shell $(CC) -dM -E - < /dev/null | grep -q "ARC700" && echo 1 || echo 0) |
| 24 | |
| 25 | ifdef CONFIG_ISA_ARCOMPACT |
| 26 | ifeq ($(is_700), 0) |
| 27 | $(error Toolchain not configured for ARCompact builds) |
| 28 | endif |
| 29 | endif |
| 30 | |
| 31 | ifdef CONFIG_ISA_ARCV2 |
| 32 | ifeq ($(is_700), 1) |
| 33 | $(error Toolchain not configured for ARCv2 builds) |
| 34 | endif |
| 35 | endif |
| 36 | |
Vineet Gupta | 080c374 | 2013-02-11 19:52:57 +0530 | [diff] [blame] | 37 | ifdef CONFIG_ARC_CURR_IN_REG |
| 38 | # For a global register defintion, make sure it gets passed to every file |
| 39 | # We had a customer reported bug where some code built in kernel was NOT using |
| 40 | # any kernel headers, and missing the r25 global register |
Vineet Gupta | 8235703e | 2013-06-01 12:55:42 +0530 | [diff] [blame] | 41 | # Can't do unconditionally because of recursive include issues |
Vineet Gupta | 080c374 | 2013-02-11 19:52:57 +0530 | [diff] [blame] | 42 | # due to <linux/thread_info.h> |
| 43 | LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h |
| 44 | endif |
| 45 | |
Vineet Gupta | 5a45da0 | 2013-05-25 14:03:25 +0530 | [diff] [blame] | 46 | upto_gcc44 := $(call cc-ifversion, -le, 0404, y) |
| 47 | atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y) |
Vineet Gupta | 5a45da0 | 2013-05-25 14:03:25 +0530 | [diff] [blame] | 48 | |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 49 | cflags-$(atleast_gcc44) += -fsection-anchors |
| 50 | |
Vineet Gupta | 76a0840 | 2016-11-08 08:47:14 -0800 | [diff] [blame] | 51 | cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock |
| 52 | cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape |
| 53 | |
Alexey Brodkin | d05a76a | 2015-07-16 21:45:38 +0300 | [diff] [blame] | 54 | ifdef CONFIG_ISA_ARCV2 |
| 55 | |
Vineet Gupta | 1f6ccff | 2013-05-13 18:30:41 +0530 | [diff] [blame] | 56 | ifndef CONFIG_ARC_HAS_LL64 |
Alexey Brodkin | d05a76a | 2015-07-16 21:45:38 +0300 | [diff] [blame] | 57 | cflags-y += -mno-ll64 |
| 58 | endif |
| 59 | |
| 60 | ifndef CONFIG_ARC_HAS_DIV_REM |
| 61 | cflags-y += -mno-div-rem |
| 62 | endif |
| 63 | |
Vineet Gupta | 1f6ccff | 2013-05-13 18:30:41 +0530 | [diff] [blame] | 64 | endif |
| 65 | |
Vineet Gupta | 5a205a3 | 2016-09-16 17:23:26 -0700 | [diff] [blame] | 66 | cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI) |
| 67 | cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi) |
Vineet Gupta | 6716dbb | 2013-06-24 21:22:06 +0530 | [diff] [blame] | 68 | |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 69 | ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE |
| 70 | # Generic build system uses -O2, we want -O3 |
Vineet Gupta | 9770906 | 2015-06-18 13:54:01 +0530 | [diff] [blame] | 71 | # Note: No need to add to cflags-y as that happens anyways |
Arnd Bergmann | a76bcf5 | 2016-11-10 17:44:44 +0100 | [diff] [blame] | 72 | # |
| 73 | # Disable the false maybe-uninitialized warings gcc spits out at -O3 |
| 74 | ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,) |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 75 | endif |
| 76 | |
| 77 | # small data is default for elf32 tool-chain. If not usable, disable it |
| 78 | # This also allows repurposing GP as scratch reg to gcc reg allocator |
| 79 | disable_small_data := y |
| 80 | cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp |
| 81 | |
| 82 | cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian |
| 83 | ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB |
| 84 | |
Vineet Gupta | 5a45da0 | 2013-05-25 14:03:25 +0530 | [diff] [blame] | 85 | # STAR 9000518362: (fixed with binutils shipping with gcc 4.8) |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 86 | # arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept |
Vineet Gupta | 5a45da0 | 2013-05-25 14:03:25 +0530 | [diff] [blame] | 87 | # --build-id w/o "-marclinux". Default arc-elf32-ld is OK |
| 88 | ldflags-$(upto_gcc44) += -marclinux |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 89 | |
Vineet Gupta | 68d8fee | 2014-08-07 16:24:47 -0700 | [diff] [blame] | 90 | LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name) |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 91 | |
| 92 | # Modules with short calls might break for calls into builtin-kernel |
Vineet Gupta | 07fd7d4 | 2015-12-21 12:38:01 +0530 | [diff] [blame] | 93 | KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 94 | |
| 95 | # Finally dump eveything into kernel build system |
| 96 | KBUILD_CFLAGS += $(cflags-y) |
| 97 | KBUILD_AFLAGS += $(KBUILD_CFLAGS) |
| 98 | LDFLAGS += $(ldflags-y) |
| 99 | |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 100 | head-y := arch/arc/kernel/head.o |
| 101 | |
| 102 | # See arch/arc/Kbuild for content of core part of the kernel |
| 103 | core-y += arch/arc/ |
| 104 | |
Vineet Gupta | 999159a | 2013-01-22 17:00:52 +0530 | [diff] [blame] | 105 | # w/o this dtb won't embed into kernel binary |
| 106 | core-y += arch/arc/boot/dts/ |
| 107 | |
Vineet Gupta | 33460f8 | 2017-07-28 16:53:50 +0530 | [diff] [blame] | 108 | core-y += arch/arc/plat-sim/ |
Vineet Gupta | fd15579 | 2015-02-20 19:12:18 +0530 | [diff] [blame] | 109 | core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/ |
Alexey Brodkin | 556cc1c | 2014-01-27 14:51:34 +0100 | [diff] [blame] | 110 | core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/ |
Noam Camus | 96665789 | 2015-10-16 16:52:43 +0300 | [diff] [blame] | 111 | core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/ |
Alexey Brodkin | a518d63 | 2017-08-15 21:13:55 +0300 | [diff] [blame] | 112 | core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/ |
Noam Camus | 96665789 | 2015-10-16 16:52:43 +0300 | [diff] [blame] | 113 | |
| 114 | ifdef CONFIG_ARC_PLAT_EZNPS |
| 115 | KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include |
| 116 | endif |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 117 | |
Vineet Gupta | 769bc1f | 2013-01-22 17:02:38 +0530 | [diff] [blame] | 118 | drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/ |
| 119 | |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 120 | libs-y += arch/arc/lib/ $(LIBGCC) |
| 121 | |
Vineet Gupta | fb0990b | 2013-03-22 19:48:01 +0530 | [diff] [blame] | 122 | boot := arch/arc/boot |
| 123 | |
Andrea Gelmini | 2547476 | 2016-05-21 13:45:35 +0200 | [diff] [blame] | 124 | #default target for make without any arguments. |
Michal Marek | 5e40f0f | 2016-11-22 22:34:31 +0100 | [diff] [blame] | 125 | KBUILD_IMAGE := $(boot)/bootpImage |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 126 | |
Michal Marek | 5e40f0f | 2016-11-22 22:34:31 +0100 | [diff] [blame] | 127 | all: bootpImage |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 128 | bootpImage: vmlinux |
| 129 | |
Vineet Gupta | 104058e | 2013-03-22 22:04:27 +0530 | [diff] [blame] | 130 | boot_targets += uImage uImage.bin uImage.gz |
| 131 | |
| 132 | $(boot_targets): vmlinux |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 133 | $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ |
| 134 | |
Vineet Gupta | 999159a | 2013-01-22 17:00:52 +0530 | [diff] [blame] | 135 | %.dtb %.dtb.S %.dtb.o: scripts |
| 136 | $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ |
| 137 | |
| 138 | dtbs: scripts |
Rob Herring | 10375cc | 2015-10-08 10:10:53 -0500 | [diff] [blame] | 139 | $(Q)$(MAKE) $(build)=$(boot)/dts |
Vineet Gupta | 999159a | 2013-01-22 17:00:52 +0530 | [diff] [blame] | 140 | |
Vineet Gupta | cfdbc2e | 2013-01-18 15:12:20 +0530 | [diff] [blame] | 141 | archclean: |
| 142 | $(Q)$(MAKE) $(clean)=$(boot) |
| 143 | |
| 144 | # Hacks to enable final link due to absence of link-time branch relexation |
| 145 | # and gcc choosing optimal(shorter) branches at -O3 |
| 146 | # |
| 147 | # vineetg Feb 2010: -mlong-calls switched off for overall kernel build |
| 148 | # However lib/decompress_inflate.o (.init.text) calls |
| 149 | # zlib_inflate_workspacesize (.text) causing relocation errors. |
| 150 | # Thus forcing all exten calls in this file to be long calls |
| 151 | export CFLAGS_decompress_inflate.o = -mmedium-calls |
| 152 | export CFLAGS_initramfs.o = -mmedium-calls |
Vineet Gupta | 41195d2 | 2013-01-18 15:12:23 +0530 | [diff] [blame] | 153 | ifdef CONFIG_SMP |
| 154 | export CFLAGS_core.o = -mmedium-calls |
| 155 | endif |