From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/arch/arc/Makefile | 68 +++++++++++++++++++++-------------
1 files changed, 42 insertions(+), 26 deletions(-)
diff --git a/kernel/arch/arc/Makefile b/kernel/arch/arc/Makefile
index 99c55f0..578bdbb 100644
--- a/kernel/arch/arc/Makefile
+++ b/kernel/arch/arc/Makefile
@@ -1,16 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 as
-# published by the Free Software Foundation.
-#
-KBUILD_DEFCONFIG := nsim_hs_defconfig
+KBUILD_DEFCONFIG := haps_hs_smp_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-$(CONFIG_ISA_ARCV2) += -mcpu=hs38
+
+tune-mcpu-def-$(CONFIG_ISA_ARCOMPACT) := -mcpu=arc700
+tune-mcpu-def-$(CONFIG_ISA_ARCV2) := -mcpu=hs38
+
+ifeq ($(CONFIG_ARC_TUNE_MCPU),"")
+cflags-y += $(tune-mcpu-def-y)
+else
+tune-mcpu := $(shell echo $(CONFIG_ARC_TUNE_MCPU))
+tune-mcpu-ok := $(call cc-option-yn, $(tune-mcpu))
+ifeq ($(tune-mcpu-ok),y)
+cflags-y += $(tune-mcpu)
+else
+# The flag provided by 'CONFIG_ARC_TUNE_MCPU' option isn't known by this compiler
+# (probably the compiler is too old). Use ISA default mcpu flag instead as a safe option.
+$(warning ** WARNING ** CONFIG_ARC_TUNE_MCPU flag '$(tune-mcpu)' is unknown, fallback to '$(tune-mcpu-def-y)')
+cflags-y += $(tune-mcpu-def-y)
+endif
+endif
+
ifdef CONFIG_ARC_CURR_IN_REG
# For a global register defintion, make sure it gets passed to every file
@@ -18,7 +36,7 @@
# 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 ${src}/arch/arc/include/asm/current.h
+LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h
endif
cflags-y += -fsection-anchors
@@ -27,6 +45,12 @@
cflags-$(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
@@ -40,14 +64,6 @@
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 $(call cc-disable-warning,maybe-uninitialized,)
-endif
# small data is default for elf32 tool-chain. If not usable, disable it
# This also allows repurposing GP as scratch reg to gcc reg allocator
@@ -78,12 +94,7 @@
core-y += arch/arc/plat-sim/
core-$(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/
@@ -91,17 +102,22 @@
boot := arch/arc/boot
-boot_targets := uImage uImage.bin uImage.gz uImage.lzma
+boot_targets := uImage.bin uImage.gz uImage.lzma
PHONY += $(boot_targets)
$(boot_targets): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
-%.dtb %.dtb.S %.dtb.o: scripts
- $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
+uimage-default-y := uImage.bin
+uimage-default-$(CONFIG_KERNEL_GZIP) := uImage.gz
+uimage-default-$(CONFIG_KERNEL_LZMA) := uImage.lzma
-dtbs: scripts
- $(Q)$(MAKE) $(build)=$(boot)/dts
+PHONY += uImage
+uImage: $(uimage-default-y)
+ @ln -sf $< $(boot)/uImage
+ @$(kecho) ' Image $(boot)/uImage is ready'
+
+CLEAN_FILES += $(boot)/uImage
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
--
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