#
#  Copyright 2007-2020 Broadcom Inc. All rights reserved.
#  
#  Permission is granted to use, copy, modify and/or distribute this
#  software under either one of the licenses below.
#  
#  License Option 1: GPL
#  
#  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 (the "GPL").
#  
#  This program is distributed in the hope that it will be useful, but
#  WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#  General Public License version 2 (GPLv2) for more details.
#  
#  You should have received a copy of the GNU General Public License
#  version 2 (GPLv2) along with this source code.
#  
#  
#  License Option 2: Broadcom Open Network Switch APIs (OpenNSA) license
#  
#  This software is governed by the Broadcom Open Network Switch APIs license:
#  https://www.broadcom.com/products/ethernet-connectivity/software/opennsa
#
# $Id: Makefile.linux-iproc Exp $
# $Copyright: (c) 2007 Broadcom Corp.
# All Rights Reserved.$
# Makefile for iproc-CMICd

# User must select one platform from below.By default ARM_LINUX is selected. .
ifeq (,$(BUILD_PLATFORM))
BUILD_PLATFORM=ARM_LINUX
endif

# TOOLCHAIN_BASE_DIR    Toolchain base directory for iPROC-CMICd devices
# TARGET_ARCHITECTURE   Compiler for target architecture
# KERNDIR               Kernel directory for iPROC-CMICd devices
ifeq (BE,$(ENDIAN_MODE))
#While BE mode is supported, it's use is very limited.  We had a specific customer
#request for BE support but don't currently mainstream it.  So a 5.1.0 version
#has not been built.  Continue using 5.0.3 for any BE support
TOOLCHAIN_BASE_DIR ?= /projects/ntsw-tools/linux/iproc_ldks/xldk61-be/XLDK32
KERN_BASE_DIR ?= $(TOOLCHAIN_BASE_DIR)
TARGET_ARCHITECTURE:=armeb-broadcom-linux-uclibcgnueabi
KERNDIR ?= $(TOOLCHAIN_BASE_DIR)/kernel/linux
else
TOOLCHAIN_BASE_DIR ?= /projects/ntsw-tools/linux/iproc_ldks/XLDK_GCC10/XLDK32
KERN_BASE_DIR ?= /projects/ntsw-tools/linux/iproc_ldks/xldk61/XLDK32
TARGET_ARCHITECTURE:= arm-broadcom-linux-uclibcgnueabi
KERNDIR ?= $(KERN_BASE_DIR)/kernel/linux
endif

ifeq (,$(CROSS_COMPILE))
CROSS_COMPILE:= $(TARGET_ARCHITECTURE)-
endif

# arm9tools
TOOLCHAIN_BIN_DIR=$(TOOLCHAIN_BASE_DIR)/buildroot/host/usr/bin
override PATH:=$(TOOLCHAIN_BASE_DIR)/buildroot/host/usr/$(TARGET_ARCHITECTURE)/bin:$(TOOLCHAIN_BIN_DIR):$(PATH)
LD_LIBRARY_PATH=$(TOOLCHAIN_BASE_DIR)/buildroot/host/usr/lib
export TOOLCHAIN_BIN_DIR LD_LIBRARY_PATH

CROSS_GCC_VER ?= $(shell $(TOOLCHAIN_BIN_DIR)/$(CROSS_COMPILE)gcc -dumpversion)
CROSS_GCC_VER_MAJOR := $(shell echo $(CROSS_GCC_VER) | cut -f1 -d.)

# Default Linux include directory
ifeq (,$(LINUX_INCLUDE))
LINUX_INCLUDE := $(KERNDIR)/include
endif

ifeq (BE,$(ENDIAN_MODE))
CFGFLAGS += -DSYS_BE_PIO=1 -DSYS_BE_PACKET=0 -DSYS_BE_OTHER=1
ENDIAN = BE_HOST=1
else
CFGFLAGS += -DSYS_BE_PIO=0 -DSYS_BE_PACKET=0 -DSYS_BE_OTHER=0
ENDIAN = LE_HOST=1
endif

CFLAGS += -fno-aggressive-loop-optimizations
CFLAGS += -Wno-error=maybe-uninitialized
CFLAGS += -Wno-error=array-bounds
CFLAGS += -fgnu89-inline
ifeq "$(shell expr $(CROSS_GCC_VER_MAJOR) \>= 8)" "1"
    CFLAGS += -Wno-stringop-overflow
    CFLAGS += -Wno-stringop-truncation
    CFLAGS += -Wno-error=restrict
endif
ifeq "$(shell expr $(CROSS_GCC_VER_MAJOR) \>= 9)" "1"
	CFLAGS += -Wno-address-of-packed-member
endif
ifeq "$(shell expr $(CROSS_GCC_VER_MAJOR) \== 10)" "1"
	#There might be a bug in GCC10 that cannot detect initialization correctly.
	CFLAGS += -Wno-error=uninitialized
	CFLAGS += -Wno-error=format-overflow
	CFLAGS += -fcommon
endif

CFGFLAGS += -D$(ENDIAN) -DIPROC_CMICD
CFGFLAGS += -DBCM_PLATFORM_STRING=\"IPROC_CMICD\"

#XLR-54
CFLAGS += -Wno-error=memset-elt-size #SDK-232626
CFLAGS += -Wno-error=unused-function
CFLAGS += -Wno-error=unused-variable
CFLAGS += -Wno-error=unused-const-variable
ARCH = arm
KBUILD_VERBOSE = 1

export ARCH KBUILD_VERBOSE

comma = ,
basetarget = $(basename $(notdir $@))
modname = $(basetarget)

# Extra variables.
EXTRA_CFLAGS = -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)

name-fix = $(subst $(comma),_,$(subst -,_,$1))
basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
modname_flags  = $(if $(filter 1,$(words $(modname))),\
                 -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")

KFLAG_INCLD ?= $(LD_LIBRARY_PATH)/gcc/$(TARGET_ARCHITECTURE)/$(CROSS_GCC_VER)/include

ifeq (,$(KFLAGS))
KFLAGS := -D__LINUX_ARM_ARCH__=7 -D__KERNEL__ -nostdinc  -isystem $(KFLAG_INCLD) -I$(LINUX_INCLUDE) -include $(LINUX_INCLUDE)/generated/autoconf.h -I$(KERNDIR)/arch/arm/include -I$(KERNDIR)/arch/arm/include/generated -I$(KERNDIR)/arch/arm/mach-iproc/include -Wall -Wstrict-prototypes -Wno-trigraphs -Os -fno-strict-aliasing -fno-common -marm -mabi=aapcs-linux -fno-pic -pipe -msoft-float -ffreestanding -march=armv7-a -mfpu=vfp -mfloat-abi=softfp -fomit-frame-pointer -g -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -mlong-calls
KFLAGS += -I$(LINUX_INCLUDE)/uapi -I$(LINUX_INCLUDE)/generated/uapi -I$(KERNDIR)/arch/arm/include/uapi -I$(KERNDIR)/arch/arm/include/generated/uapi

ifeq "$(shell expr $(CROSS_GCC_VER_MAJOR) \== 10)" "1"
	# WAR: Disable the following optimizations because they will fail the installation of kernel modules
	KFLAGS += -fno-expensive-optimizations -fno-gcse
endif
endif

ifneq ($(targetplat),user)
include ${SDK}/make/Makefile.linux-kernel-3_6
endif