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 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
15 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
16
17 #
18 # Use minimum architecture for als.c to be abl
19 # message if the kernel is started on a machin
20 #
21 ifndef CONFIG_CC_IS_CLANG
22 CC_FLAGS_MARCH_MINIMUM := -march=z900
23 else
24 CC_FLAGS_MARCH_MINIMUM := -march=z10
25 endif
26
27 ifneq ($(CC_FLAGS_MARCH),$(CC_FLAGS_MARCH_MINI
28 AFLAGS_REMOVE_head.o += $(CC_FLAGS_
29 AFLAGS_head.o += $(CC_FLAGS_
30 AFLAGS_REMOVE_mem.o += $(CC_FLAGS_
31 AFLAGS_mem.o += $(CC_FLAGS_
32 CFLAGS_REMOVE_als.o += $(CC_FLAGS_
33 CFLAGS_als.o += $(CC_FLAGS_
34 CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_
35 CFLAGS_sclp_early_core.o += $(CC_FLAGS_
36 endif
37
38 CFLAGS_sclp_early_core.o += -I$(srctree)/drive
39
40 obj-y := head.o als.o startup.o physmem_info
41 obj-y += string.o ebcdic.o sclp_early_core.o
42 obj-y += version.o pgm_check_info.o ctype.o
43 obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
44 obj-y += $(if $(CONFIG_KERNEL_UNCOMPRESSED),
45 obj-$(CONFIG_KERNEL_ZSTD) += clz_ctz.o
46 obj-$(CONFIG_KMSAN) += kmsan.o
47 obj-all := $(obj-y) piggy.o syms.o
48
49 targets := bzImage section_cmp.boot.data secti
50 targets += vmlinux.lds vmlinux vmlinux.bin vml
51 targets += vmlinux.bin.xz vmlinux.bin.lzma vml
52 targets += vmlinux.bin.zst info.bin syms.bin v
53 targets += relocs.S
54
55 OBJECTS := $(addprefix $(obj)/,$(obj-y))
56 OBJECTS_ALL := $(addprefix $(obj)/,$(obj-all))
57
58 clean-files += vmlinux.map
59
60 quiet_cmd_section_cmp = SECTCMP $*
61 define cmd_section_cmp
62 s1=`$(OBJDUMP) -t "$<" | grep "\s$*\s\
63 sed -n "/0000000000000000/! s/
64 s2=`$(OBJDUMP) -t "$(word 2,$^)" | gre
65 sed -n "/0000000000000000/! s/
66 if [ "$$s1" != "$$s2" ]; then \
67 echo "error: section $* differ
68 exit 1; \
69 fi; \
70 touch $@
71 endef
72
73 $(obj)/bzImage: $(obj)/vmlinux $(obj)/section_
74 $(call if_changed,objcopy)
75
76 $(obj)/section_cmp%: vmlinux $(obj)/vmlinux FO
77 $(call if_changed,section_cmp)
78
79 LDFLAGS_vmlinux-$(CONFIG_LD_ORPHAN_WARN) := --
80 LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) --ofor
81 $(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS_A
82 $(call if_changed,ld)
83
84 LDFLAGS_vmlinux.syms := $(LDFLAGS_vmlinux-y) -
85 $(obj)/vmlinux.syms: $(obj)/vmlinux.lds $(OBJE
86 $(call if_changed,ld)
87
88 quiet_cmd_dumpsyms = DUMPSYMS $<
89 define cmd_dumpsyms
90 $(NM) -n -S --format=bsd "$<" | sed -n
91 endef
92
93 $(obj)/syms.bin: $(obj)/vmlinux.syms FORCE
94 $(call if_changed,dumpsyms)
95
96 OBJCOPYFLAGS_syms.o := -I binary -O elf64-s390
97 $(obj)/syms.o: $(obj)/syms.bin FORCE
98 $(call if_changed,objcopy)
99
100 OBJCOPYFLAGS_info.bin := -O binary --only-sect
101 $(obj)/info.bin: vmlinux FORCE
102 $(call if_changed,objcopy)
103
104 OBJCOPYFLAGS_info.o := -I binary -O elf64-s390
105 $(obj)/info.o: $(obj)/info.bin FORCE
106 $(call if_changed,objcopy)
107
108 OBJCOPYFLAGS_vmlinux.bin := -O binary --remove
109 $(obj)/vmlinux.bin: vmlinux FORCE
110 $(call if_changed,objcopy)
111
112 CMD_RELOCS=arch/s390/tools/relocs
113 quiet_cmd_relocs = RELOCS $@
114 cmd_relocs = $(CMD_RELOCS) $< > $@
115 $(obj)/relocs.S: vmlinux FORCE
116 $(call if_changed,relocs)
117
118 suffix-$(CONFIG_KERNEL_GZIP) := .gz
119 suffix-$(CONFIG_KERNEL_BZIP2) := .bz2
120 suffix-$(CONFIG_KERNEL_LZ4) := .lz4
121 suffix-$(CONFIG_KERNEL_LZMA) := .lzma
122 suffix-$(CONFIG_KERNEL_LZO) := .lzo
123 suffix-$(CONFIG_KERNEL_XZ) := .xz
124 suffix-$(CONFIG_KERNEL_ZSTD) := .zst
125
126 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORC
127 $(call if_changed,gzip)
128 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FOR
129 $(call if_changed,bzip2_with_size)
130 $(obj)/vmlinux.bin.lz4: $(obj)/vmlinux.bin FOR
131 $(call if_changed,lz4_with_size)
132 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FO
133 $(call if_changed,lzma_with_size)
134 $(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FOR
135 $(call if_changed,lzo_with_size)
136 $(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORC
137 $(call if_changed,xzkern_with_size)
138 $(obj)/vmlinux.bin.zst: $(obj)/vmlinux.bin FOR
139 $(call if_changed,zstd22_with_size)
140
141 OBJCOPYFLAGS_piggy.o := -I binary -O elf64-s39
142 $(obj)/piggy.o: $(obj)/vmlinux.bin$(suffix-y)
143 $(call if_changed,objcopy)
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