1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # Makefile for the linux s390-specific parts o
4 #
5
6 # Tooling runtimes are unavailable and cannot
7 KCOV_INSTRUMENT := n
8 GCOV_PROFILE := n
9 UBSAN_SANITIZE := n
10 KASAN_SANITIZE := n
11 KCSAN_SANITIZE := n
12 KMSAN_SANITIZE := n
13
14 #
15 # Use minimum architecture level so it is poss
16 # message if the kernel is started on a machin
17 #
18 CC_FLAGS_MARCH_MINIMUM := -march=z10
19
20 KBUILD_AFLAGS := $(filter-out $(CC_FLAGS_MARCH
21 KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_MARCH
22 KBUILD_AFLAGS += $(CC_FLAGS_MARCH_MINIMUM)
23 KBUILD_CFLAGS += $(CC_FLAGS_MARCH_MINIMUM)
24
25 CFLAGS_sclp_early_core.o += -I$(srctree)/drive
26
27 obj-y := head.o als.o startup.o physmem_info
28 obj-y += string.o ebcdic.o sclp_early_core.o
29 obj-y += version.o pgm_check_info.o ctype.o
30 obj-y += uv.o printk.o
31 obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
32 obj-y += $(if $(CONFIG_KERNEL_UNCOMPRESSED),
33 obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o
34 obj-$(CONFIG_KMSAN) += kmsan.o
35 obj-all := $(obj-y) piggy.o syms.o
36
37 targets := bzImage section_cmp.boot.data secti
38 targets += vmlinux.lds vmlinux vmlinux.bin vml
39 targets += vmlinux.bin.xz vmlinux.bin.lzma vml
40 targets += vmlinux.bin.zst info.bin syms.bin v
41 targets += relocs.S
42
43 OBJECTS := $(addprefix $(obj)/,$(obj-y))
44 OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
45
46 clean-files += vmlinux.map
47
48 quiet_cmd_section_cmp = SECTCMP $*
49 define cmd_section_cmp
50 s1=`$(OBJDUMP) -t "$<" | grep "\s$*\s\
51 sed -n "/0000000000000000/! s/
52 s2=`$(OBJDUMP) -t "$(word 2,$^)" | gre
53 sed -n "/0000000000000000/! s/
54 if [ "$$s1" != "$$s2" ]; then \
55 echo "error: section $* differ
56 exit 1; \
57 fi; \
58 touch $@
59 endef
60
61 $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_
62 $(call if_changed,objcopy)
63
64 $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FO
65 $(call if_changed,section_cmp)
66
67 LDFLAGS_vmlinux-$(CONFIG_LD_ORPHAN_WARN) := --
68 LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) --ofor
69 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_A
70 $(call if_changed,ld)
71
72 LDFLAGS_vmlinux.syms := $(LDFLAGS_vmlinux-y) -
73 $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJE
74 $(call if_changed,ld)
75
76 quiet_cmd_dumpsyms = DUMPSYMS $<
77 define cmd_dumpsyms
78 $(NM) -n -S --format=bsd "$<" | sed -n
79 endef
80
81 $(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
82 $(call if_changed,dumpsyms)
83
84 OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390
85 $(obj)/syms.o: $(obj)/syms.bin FORCE
86 $(call if_changed,objcopy)
87
88 OBJCOPYFLAGS_info.bin := -O binary --only-sect
89 $(obj)/info.bin: vmlinux FORCE
90 $(call if_changed,objcopy)
91
92 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390
93 $(obj)/info.o: $(obj)/info.bin FORCE
94 $(call if_changed,objcopy)
95
96 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove
97 $(obj)/vmlinux.bin: vmlinux FORCE
98 $(call if_changed,objcopy)
99
100 # relocs.S is created by the vmlinux postlink
101 $(obj)/relocs.S: vmlinux
102 @true
103
104 suffix-$(CONFIG_KERNEL_GZIP) := .gz
105 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
106 suffix-$(CONFIG_KERNEL_LZ4) := .lz4
107 suffix-$(CONFIG_KERNEL_LZMA) := .lzma
108 suffix-$(CONFIG_KERNEL_LZO) := .lzo
109 suffix-$(CONFIG_KERNEL_XZ) := .xz
110 suffix-$(CONFIG_KERNEL_ZSTD) := .zst
111
112 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORC
113 $(call if_changed,gzip)
114 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FOR
115 $(call if_changed,bzip2_with_size)
116 $(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FOR
117 $(call if_changed,lz4_with_size)
118 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FO
119 $(call if_changed,lzma_with_size)
120 $(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FOR
121 $(call if_changed,lzo_with_size)
122 $(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORC
123 $(call if_changed,xzkern_with_size)
124 $(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FOR
125 $(call if_changed,zstd22_with_size)
126
127 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s39
128 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y)
129 $(call if_changed,objcopy)
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