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Rules.mk
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Rules.mk
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#
# Rules.mk
#
# USPi - An USB driver for Raspberry Pi written in C
# Copyright (C) 2014-2020 R. Stange <[email protected]>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
ifeq ($(strip $(USPIHOME)),)
USPIHOME = ..
endif
-include $(USPIHOME)/Config.mk
AARCH64 ?= 0
ifeq ($(strip $(AARCH64)),0)
RASPPI ?= 1
PREFIX ?= arm-none-eabi-
else
RASPPI = 3
PREFIX ?= aarch64-linux-gnu-
endif
CC = $(PREFIX)gcc
AS = $(CC)
LD = $(PREFIX)ld
AR = $(PREFIX)ar
ifeq ($(strip $(AARCH64)),0)
ifeq ($(strip $(RASPPI)),1)
ARCH ?= -march=armv6j -mtune=arm1176jzf-s
TARGET ?= kernel
else ifeq ($(strip $(RASPPI)),2)
ARCH ?= -march=armv7-a -mtune=cortex-a7
TARGET ?= kernel7
else
ARCH ?= -march=armv8-a -mtune=cortex-a53
TARGET ?= kernel8-32
endif
else
ARCH ?= -march=armv8-a -mtune=cortex-a53 -mlittle-endian -mcmodel=small -DAARCH64=1
endif
OPTIMIZE ?= -O2
AFLAGS += $(ARCH) -DRASPPI=$(RASPPI)
CFLAGS += $(ARCH) -Wall -Wno-psabi -fsigned-char -fno-builtin -nostdinc -nostdlib \
-std=gnu99 -undef -DRASPPI=$(RASPPI) -I $(USPIHOME)/include $(OPTIMIZE) #-DNDEBUG
%.o: %.S
@echo " AS $@"
@$(AS) $(AFLAGS) -c -o $@ $<
%.o: %.c
@echo " CC $@"
@$(CC) $(CFLAGS) -c -o $@ $<
$(TARGET).img: $(OBJS) $(LIBS)
@echo " LD $(TARGET).elf"
@$(LD) -o $(TARGET).elf -Map $(TARGET).map -T $(USPIHOME)/env/uspienv.ld \
$(USPIHOME)/env/lib/startup.o $(OBJS) $(LIBS)
@echo " DUMP $(TARGET).lst"
@$(PREFIX)objdump -D $(TARGET).elf > $(TARGET).lst
@echo " COPY $(TARGET).img"
@$(PREFIX)objcopy $(TARGET).elf -O binary $(TARGET).img
@echo -n " WC $(TARGET).img => "
@wc -c < $(TARGET).img
clean:
rm -f *.o *.a *.elf *.lst *.img *.cir *.map *~ $(EXTRACLEAN)