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2024-06-17 20:18:01 +08:00

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2.2 KiB
Makefile

# SPDX-License-Identifier: GPL-2.0
#
# Author: Huacai Chen <chenhuacai@loongson.cn>
# Copyright (C) 2020 Loongson Technology Corporation Limited
#
# Drop some uninteresting sections in the kernel.
# This is only relevant for ELF kernels but doesn't hurt a.out
#
OBJECT_FILES_NON_STANDARD := y
drop-sections := .comment .note .options
strip-flags := $(addprefix --remove-section=,$(drop-sections))
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
suffix-$(CONFIG_KERNEL_LZMA) := lzma
suffix-$(CONFIG_KERNEL_LZO) := lzo
suffix-$(CONFIG_KERNEL_LZ4) := lz4
suffix-$(CONFIG_KERNEL_ZSTD) := zst
targets += vmlinux.bin
quiet_cmd_bin = OBJCOPY $@
cmd_bin = $(OBJCOPY) -O binary $(strip-flags) $(VMLINUX) $@
$(obj)/vmlinux.bin: $(VMLINUX) FORCE
$(call if_changed,bin)
#
# Compressed vmlinux images
#
extra-y += vmlinux.bin.gz
extra-y += vmlinux.bin.bz2
extra-y += vmlinux.bin.lzma
extra-y += vmlinux.bin.lzo
extra-y += vmlinux.bin.lz4
extra-y += vmlinux.bin.zst
$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
$(call if_changed,bzip2)
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzma)
$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzo)
$(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FORCE
$(call if_changed,lz4)
$(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FORCE
$(call if_changed,zst22)
UIMAGE_LOADADDR = $(VMLINUX_LOAD_ADDRESS)
UIMAGE_ENTRYADDR = $(VMLINUX_ENTRY_ADDRESS)
#
# Compressed u-boot images
#
targets += uImage
targets += uImage.bin
targets += uImage.bz2
targets += uImage.gz
targets += uImage.lzma
targets += uImage.lzo
$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
$(call if_changed,uimage,none)
$(obj)/uImage.bz2: $(obj)/vmlinux.bin.bz2 FORCE
$(call if_changed,uimage,bzip2)
$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,uimage,gzip)
$(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma FORCE
$(call if_changed,uimage,lzma)
$(obj)/uImage.lzo: $(obj)/vmlinux.bin.lzo FORCE
$(call if_changed,uimage,lzo)
$(obj)/uImage: $(obj)/uImage.$(suffix-y)
@ln -sf $(notdir $<) $@
@echo ' Image $@ is ready'