1 # Makefile - Build the NanoNote payload 2 # 3 # Copyright (C) 2015 Paul Boddie <paul@boddie.org.uk> 4 # Copyright (C) Xiangfu Liu <xiangfu@sharism.cc> 5 # 6 # This program is free software: you can redistribute it and/or modify 7 # it under the terms of the GNU General Public License as published by 8 # the Free Software Foundation, either version 3 of the License, or 9 # (at your option) any later version. 10 # 11 # This program is distributed in the hope that it will be useful, 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 # GNU General Public License for more details. 15 # 16 # You should have received a copy of the GNU General Public License 17 # along with this program. If not, see <http://www.gnu.org/licenses/>. 18 19 ARCH = mipsel-linux-gnu 20 CC = $(ARCH)-gcc 21 LD = $(ARCH)-ld 22 NM = $(ARCH)-nm 23 OBJCOPY=$(ARCH)-objcopy 24 OBJDUMP=$(ARCH)-objdump 25 26 # NOTE: -O2 is actually needed to prevent memcpy references, whereas probably 27 # NOTE: one of the -f{freestanding, no-hosted, no-builtin} options should work. 28 # NOTE: See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888 29 30 CFLAGS = -O2 -Wall \ 31 -fno-unit-at-a-time -fno-zero-initialized-in-bss \ 32 -ffreestanding -fno-hosted -fno-builtin \ 33 -march=mips32 \ 34 -I../include 35 LDFLAGS = -nostdlib -EL 36 37 PAYLOAD = stage1.bin 38 TARGET = $(PAYLOAD:.bin=.elf) 39 DUMP = $(PAYLOAD:.bin=.dump) 40 MAP = $(PAYLOAD:.bin=.map) 41 42 # Ordering of objects is important and cannot be left to replacement rules. 43 44 SRC = head1.S stage1.c board.c 45 OBJ = head1.o stage1.o board.o 46 47 .PHONY: all clean distclean 48 49 all: $(PAYLOAD) 50 51 clean: 52 rm -f $(OBJ) $(TARGET) $(PAYLOAD) $(DUMP) *.map 53 54 distclean: clean 55 echo "Nothing else to clean." 56 57 $(PAYLOAD): $(TARGET) 58 $(OBJCOPY) -O binary $(@:.bin=.elf) $@+ 59 $(OBJDUMP) -D $(@:.bin=.elf) > $(@:.bin=.dump) 60 $(OBJDUMP) -h $(@:.bin=.elf) > $(@:.bin=.map) 61 $(NM) -n $(@:.bin=.elf) > System.map 62 chmod -x $@+ 63 mv -f $@+ $@ 64 65 stage1.elf: $(OBJ) 66 $(LD) $(LDFLAGS) -T $(@:.elf=.ld) $(OBJ) -o $@ 67 68 .c.o: 69 $(CC) -c $(CFLAGS) $< -o $@ 70 71 .S.o: 72 $(CC) -c $(CFLAGS) $< -o $@