mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/arch/arc/Makefile
..
..
@@ -1,16 +1,34 @@
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+# 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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-# This program is free software; you can redistribute it and/or modify
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-# it under the terms of the GNU General Public License version 2 as
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-# published by the Free Software Foundation.
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-#
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-KBUILD_DEFCONFIG := nsim_hs_defconfig
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+KBUILD_DEFCONFIG := haps_hs_smp_defconfig
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+
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+ifeq ($(CROSS_COMPILE),)
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+CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-)
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+endif
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 cflags-y	+= -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
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-cflags-$(CONFIG_ISA_ARCOMPACT)	+= -mA7
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-cflags-$(CONFIG_ISA_ARCV2)	+= -mcpu=hs38
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+
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+tune-mcpu-def-$(CONFIG_ISA_ARCOMPACT)	:= -mcpu=arc700
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+tune-mcpu-def-$(CONFIG_ISA_ARCV2)	:= -mcpu=hs38
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+
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+ifeq ($(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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+
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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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@@ -18,7 +36,7 @@
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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 ${src}/arch/arc/include/asm/current.h
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+LINUXINCLUDE	+=  -include $(srctree)/arch/arc/include/asm/current.h
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 endif
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 cflags-y				+= -fsection-anchors
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@@ -27,6 +45,12 @@
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 cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape
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 ifdef CONFIG_ISA_ARCV2
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+
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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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..
@@ -40,14 +64,6 @@
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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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-
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-ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
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-# Generic build system uses -O2, we want -O3
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-# Note: No need to add to cflags-y as that happens anyways
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-#
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-# Disable the false maybe-uninitialized warings gcc spits out at -O3
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-ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
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-endif
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 # small data is default for elf32 tool-chain. If not usable, disable it
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 # This also allows repurposing GP as scratch reg to gcc reg allocator
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@@ -78,12 +94,7 @@
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 core-y				+= arch/arc/plat-sim/
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 core-$(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_PLAT_EZNPS)	+= arch/arc/plat-eznps/
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 core-$(CONFIG_ARC_SOC_HSDK)	+= arch/arc/plat-hsdk/
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-
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-ifdef CONFIG_ARC_PLAT_EZNPS
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-KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
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-endif
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 drivers-$(CONFIG_OPROFILE)	+= arch/arc/oprofile/
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@@ -91,17 +102,22 @@
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 boot		:= arch/arc/boot
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-boot_targets := uImage uImage.bin uImage.gz uImage.lzma
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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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-%.dtb %.dtb.S %.dtb.o: scripts
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-	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
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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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-dtbs: scripts
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-	$(Q)$(MAKE) $(build)=$(boot)/dts
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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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+
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+CLEAN_FILES += $(boot)/uImage
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 archclean:
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 	$(Q)$(MAKE) $(clean)=$(boot)