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a296055b82
Similar to the lzma-loader on our MIPS targets, the spi-loader acts as a second-stage loader that will then load and start the actual kernel. As the TL-WDR4900 uses SPI-NOR and the P1010 family does not have support for memory mapping of this type of flash, this loader needs to contain a basic driver for the FSL ESPI controller. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
61 lines
1.6 KiB
Makefile
61 lines
1.6 KiB
Makefile
# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (C) 2022 Matthias Schiffer <mschiffer@universe-factory.net>
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CONFIG ?= $(error No configuration set)
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include config/$(CONFIG).mk
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MKIMAGE := mkimage
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KARCH := powerpc
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CC := $(CROSS_COMPILE)gcc
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LD := $(CROSS_COMPILE)ld
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OBJCOPY := $(CROSS_COMPILE)objcopy
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PROGRAM_NAME := MPC85xx SPI loader
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BIN_FLAGS := -O binary --pad-to=$(PAD_TO)
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CFLAGS += -std=gnu17 -Os -Wall -Wstrict-prototypes \
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-fomit-frame-pointer -ffreestanding \
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-ffunction-sections -fno-pic \
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-Iinclude -include ../config/$(CONFIG).h \
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-DCONFIG_PROGRAM_NAME='"$(PROGRAM_NAME)"' \
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-DCONFIG_IMAGE_OFFSET=$(IMAGE_OFFSET)
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ASFLAGS := $(CFLAGS)
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LDS := loader.lds
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LDFLAGS := -static --gc-sections -T $(LDS) -Ttext $(TEXT_START)
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OBJECTS := head.o loader.o string.o stdio.o drivers/serial/ns16550.o \
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drivers/spi/fsl_espi.o drivers/spi/spi-nor.o
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OUTDIR := out
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all: $(OUTDIR)/uImage
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-include $(OBJECTS:%.o=$(OUTDIR)/%.d)
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$(OUTDIR)/%.o: %.c Makefile config/$(CONFIG).mk
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -c -o $@ -MD -MP $<
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$(OUTDIR)/%.o: %.S Makefile config/$(CONFIG).mk
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@mkdir -p $(dir $@)
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$(CC) $(ASFLAGS) -c -o $@ -MD -MP $<
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$(OUTDIR)/loader.elf: $(OBJECTS:%=$(OUTDIR)/%) $(LDS)
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$(LD) $(LDFLAGS) -o $@ $(OBJECTS:%=$(OUTDIR)/%)
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$(OUTDIR)/loader.bin: $(OUTDIR)/loader.elf
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$(OBJCOPY) $(BIN_FLAGS) $< $@
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$(OUTDIR)/uImage: $(OUTDIR)/loader.bin
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$(MKIMAGE) -A $(KARCH) -O linux -T kernel -C none \
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-a $(TEXT_START) -e $(TEXT_START) -n '$(PROGRAM_NAME)' -d $< $@
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clean:
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rm -rf $(OUTDIR)
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.PHONY: all clean
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