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# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
CROSS_COMPILE ?= aarch64-linux-gnu-
CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS = -Os -g -mcpu=cortex-a35
ASFLAGS = $(CFLAGS) -Wa,-mcpu=cortex-a35
LDSCRIPT = bootrom.ld
LDFLAGS = -Wl,--build-id=none -static -nostdlib -T $(LDSCRIPT)
OBJS := start.o image.o
.PHONY: all clean
all: npcm8xx_bootrom.bin
clean:
rm -f *.o *.bin *.elf
npcm8xx_bootrom.bin: npcm8xx_bootrom.elf
$(OBJCOPY) -O binary $< $@
npcm8xx_bootrom.elf: $(OBJS) $(LDSCRIPT)
$(CC) -o $@ $(LDFLAGS) $(OBJS)
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