xref: /openbmc/linux/arch/sh/boot/compressed/Makefile (revision 1c4b5ecb) 
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
8OBJECTS := head_32.o misc.o cache.o piggy.o \
9           ashiftrt.o ashldi3.o ashrsi3.o ashlsi3.o lshrsi3.o
10
11# These were previously generated files. When you are building the kernel
12# with O=, make sure to remove the stale files in the output tree. Otherwise,
13# the build system wrongly compiles the stale ones.
14ifdef building_out_of_srctree
15$(shell rm -f $(addprefix $(obj)/, ashiftrt.S ashldi3.c ashrsi3.S ashlsi3.S lshrsi3.S))
16endif
17
18targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
19           vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo $(OBJECTS)
20
21GCOV_PROFILE := n
22
23#
24# IMAGE_OFFSET is the load offset of the compression loader
25#
26ifeq ($(CONFIG_32BIT),y)
27IMAGE_OFFSET	:= $(shell /bin/bash -c 'printf "0x%08x" \
28		     $$[$(CONFIG_MEMORY_START)  + \
29			$(CONFIG_BOOT_LINK_OFFSET)]')
30else
31IMAGE_OFFSET	:= $(shell /bin/bash -c 'printf "0x%08x" \
32		     $$[$(CONFIG_PAGE_OFFSET)  + \
33			$(KERNEL_MEMORY) + \
34			$(CONFIG_BOOT_LINK_OFFSET)]')
35endif
36
37ccflags-remove-$(CONFIG_MCOUNT) += -pg
38
39LDFLAGS_vmlinux := --oformat $(ld-bfd) -Ttext $(IMAGE_OFFSET) -e startup \
40		   -T $(obj)/../../kernel/vmlinux.lds
41
42KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
43
44$(obj)/vmlinux: $(addprefix $(obj)/, $(OBJECTS)) FORCE
45	$(call if_changed,ld)
46
47$(obj)/vmlinux.bin: vmlinux FORCE
48	$(call if_changed,objcopy)
49
50$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
51	$(call if_changed,gzip)
52$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
53	$(call if_changed,bzip2_with_size)
54$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
55	$(call if_changed,lzma_with_size)
56$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
57	$(call if_changed,xzkern_with_size)
58$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
59	$(call if_changed,lzo_with_size)
60
61OBJCOPYFLAGS += -R .empty_zero_page
62
63LDFLAGS_piggy.o := -r --format binary --oformat $(ld-bfd) -T
64
65$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
66	$(call if_changed,ld)
67