Initial commit

target/linux/mpc85xx/image/spi-loader/Makefile

@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (C) 2022 Matthias Schiffer <mschiffer@universe-factory.net>
+
+CONFIG     ?= $(error No configuration set)
+
+include config/$(CONFIG).mk
+
+MKIMAGE    := mkimage
+KARCH      := powerpc
+CC         := $(CROSS_COMPILE)gcc
+LD         := $(CROSS_COMPILE)ld
+OBJCOPY    := $(CROSS_COMPILE)objcopy
+
+PROGRAM_NAME := MPC85xx SPI loader
+
+BIN_FLAGS  := -O binary --pad-to=$(PAD_TO)
+
+CFLAGS     += -std=gnu17 -Os -Wall -Wstrict-prototypes \
+		-fomit-frame-pointer -ffreestanding \
+		-ffunction-sections -fno-pic \
+		-Iinclude -include ../config/$(CONFIG).h \
+		-DCONFIG_PROGRAM_NAME='"$(PROGRAM_NAME)"' \
+		-DCONFIG_IMAGE_OFFSET=$(IMAGE_OFFSET)
+ASFLAGS    := $(CFLAGS)
+
+LDS        := loader.lds
+LDFLAGS    := -static --gc-sections -T $(LDS) -Ttext $(TEXT_START)
+
+OBJECTS    := head.o loader.o string.o stdio.o  drivers/serial/ns16550.o \
+		drivers/spi/fsl_espi.o drivers/spi/spi-nor.o
+
+OUTDIR     := out
+
+all: $(OUTDIR)/uImage
+
+-include $(OBJECTS:%.o=$(OUTDIR)/%.d)
+
+$(OUTDIR)/%.o: %.c Makefile config/$(CONFIG).mk
+	@mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) -c -o $@ -MD -MP $<
+
+$(OUTDIR)/%.o: %.S Makefile config/$(CONFIG).mk
+	@mkdir -p $(dir $@)
+	$(CC) $(ASFLAGS) -c -o $@ -MD -MP $<
+
+$(OUTDIR)/loader.elf: $(OBJECTS:%=$(OUTDIR)/%) $(LDS)
+	$(LD) $(LDFLAGS) -o $@ $(OBJECTS:%=$(OUTDIR)/%)
+
+$(OUTDIR)/loader.bin: $(OUTDIR)/loader.elf
+	$(OBJCOPY) $(BIN_FLAGS) $< $@
+
+$(OUTDIR)/uImage: $(OUTDIR)/loader.bin
+	$(MKIMAGE) -A $(KARCH) -O linux -T kernel -C none \
+		-a $(TEXT_START) -e $(TEXT_START) -n '$(PROGRAM_NAME)' -d $< $@
+
+clean:
+	rm -rf $(OUTDIR)
+
+.PHONY: all clean