#
# Copyright (c) 2012, ARM Limited. All rights reserved.
#
# Redistribution and use in source and binary forms, with
# or without modification, are permitted provided that the
# following conditions are met:
#
# Redistributions of source code must retain the above
# copyright notice, this list of conditions and the
# following disclaimer.
#
# Redistributions in binary form must reproduce the
# above copyright notice, this list of conditions and
# the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# Neither the name of ARM nor the names of its
# contributors may be used to endorse or promote products
# derived from this software without specific prior written
# permission.
#

# Decrease the verbosity of the make script
# can be made verbose by passing V=1 at the make command line
ifdef V
  KBUILD_VERBOSE = $(V)
else
  KBUILD_VERBOSE = 0
endif

ifeq "$(KBUILD_VERBOSE)" "0"
	Q=@
else
	Q=
endif

VE?=TRUE
T2?=FALSE
L2_POLICY?=WF
LOBASE?=0x800
KERNADDR?=$(LOBASE)08000
# megabyte at which the vectors are located (almost always zero)
VECTBASE?=$(LOBASE)
# Set the megabyte that the BIOS code will execute at
HIBASE?=0x8FF
FSADDR?=0x8e400000
DEBUG=TRUE
# BOOT_CLUSTER is also defined in big-little/Makefile!
BOOT_CLUSTER?=0
# SWITCHER is also defined in big-little/Makefile!
SWITCHER?=TRUE

ifeq "$(BA)" ""
BOOTARGS=mem=255M console=ttyAMA0,115200 migration_cost=500 cachepolicy=writealloc
BA=$(BOOTARGS)
else
BOOTARGS=$(BA)
endif

V7_ASFLAGS=--apcs /inter --cpu=Eagle --keep \
 --pd "BOOTARGS SETS \"$(BOOTARGS)\"" \
 --pd "L2_POLICY SETS \"$(L2_POLICY)\"" \
 --pd "VE SETL {$(VE)}" \
 --pd "HIBASE SETS \"$(HIBASE)\""

CFLAGS:=--cpu=Eagle -O2 \
 -DT2=$(T2) \
 -DSETUPMMU=$(SETUPMMU) \
 -DHIBASE=$(HIBASE) \
 -DVE=$(VE) \
 -DBOOT_CLUSTER=$(BOOT_CLUSTER) \
 -DVECTBASE=$(VECTBASE) \
 -DSWITCHER=$(SWITCHER)

ifdef DEBUG
CFLAGS     += -g -O0
ASFLAGS    += -g
V7_ASFLAGS += -g
endif

OBJS=  boot.o bootargs.o c_start.o helpers.o kernel.o filesystem.o uart.o vectors.o bl_sec.o bl.o

.PHONY: all
all: img.axf

.PHONY: bl
bl:
	make -C big-little bl.axf

.PHONY: bl_sec
bl_sec:
	make -C big-little bl_sec.axf wboot.bin

.PHONY: clean

clean:
	@echo "  CLEAN"
	$(Q)rm -f $(OBJS) img.axf *.map bl.S bl_sec.S
	make -C big-little clean

# Extra dependencies
boot.o: emubuild.s
helpers.o : emubuild.s

%.o: %.S
	@echo "  AS      $<"
	$(Q)armasm $(V7_ASFLAGS) -o $@ $<

%.o: %.c
	@echo "  CC      $<"
	$(Q)armcc $(CFLAGS) -o $@ -c $<

bl.S:
	make -C big-little bl.axf
	@echo "  MAP"
	$(Q)./makemap big-little/bl.axf bl

bl.o:	bl.S
	@echo "  AS      $<"
	$(Q)armasm $(V7_ASFLAGS) -o $@ $<

bl_sec.S:
	make -C big-little bl_sec.axf wboot.bin
	@echo "  MAP"
	$(Q)./makemap big-little/bl_sec.axf bl_sec

bl_sec.o: bl_sec.S
	@echo "  AS      $<"
	$(Q)armasm $(V7_ASFLAGS) -o $@ $<

img.axf: $(OBJS)
	$(Q)cat boot.map.template > boot.map
	$(Q)cat bl_sec.map >> boot.map
	$(Q)cat bl.map >> boot.map
	$(Q)sed -i \
	-e "s/KERNADDRBA/$(shell perl -e "printf('0x%08X',$(KERNADDR)-0x7f00)")/g" \
	-e "s/FSADDR/${FSADDR}/g" \
	-e "s/HIBASE/${HIBASE}/g" \
	-e "s/KERNADDR/${KERNADDR}/g" \
	-e "s/VECTBASE/${VECTBASE}/g" \
	boot.map
	@echo "  LD      $@"
	$(Q)armlink --entry $(VECTBASE)00000 -o $@ --scatter boot.map $(OBJS)