1# SPDX-License-Identifier: GPL-2.0 2# 3# linux/arch/sh/boot/compressed/Makefile 4# 5# create a compressed vmlinux image from the original vmlinux 6# 7 8targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o 9 10OBJECTS = $(obj)/head.o $(obj)/misc.o 11 12# 13# IMAGE_OFFSET is the load offset of the compression loader 14# Assign dummy values if these 2 variables are not defined, 15# in order to suppress error message. 16# 17CONFIG_MEMORY_START ?= 0x00400000 18CONFIG_BOOT_LINK_OFFSET ?= 0x00280000 19IMAGE_OFFSET := $(shell printf "0x%08x" $$(($(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)))) 20 21LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null) 22LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -estartup -T $(obj)/vmlinux.lds \ 23 --defsym output=$(CONFIG_MEMORY_START) 24 25$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE 26 $(call if_changed,ld) 27 28$(obj)/vmlinux.bin: vmlinux FORCE 29 $(call if_changed,objcopy) 30 31suffix-$(CONFIG_KERNEL_GZIP) := gzip 32suffix-$(CONFIG_KERNEL_LZO) := lzo 33compress-$(CONFIG_KERNEL_GZIP) := gzip 34compress-$(CONFIG_KERNEL_LZO) := lzo_with_size 35 36$(obj)/vmlinux.bin.$(suffix-y): $(obj)/vmlinux.bin FORCE 37 $(call if_changed,$(compress-y)) 38 39LDFLAGS_piggy.o := -r --format binary --oformat elf32-h8300-linux -T 40OBJCOPYFLAGS := -O binary 41 42$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE 43 $(call if_changed,ld) 44 45CFLAGS_misc.o = -O0 46