1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # linux/arch/arm/boot/compressed/Makefile
4 #
5 # create a compressed vmlinuz image from the o
6 #
7
8 OBJS =
9
10 HEAD = head.o
11 OBJS += misc.o decompress.o
12 CFLAGS_decompress.o += $(DISABLE_STACKLEAK_PLU
13 ifeq ($(CONFIG_DEBUG_UNCOMPRESS),y)
14 OBJS += debug.o
15 AFLAGS_head.o += -DDEBUG
16 endif
17
18 # string library code (-Os is enforced to keep
19 OBJS += string.o
20 CFLAGS_string.o := -Os
21
22 ifeq ($(CONFIG_ARM_VIRT_EXT),y)
23 OBJS += hyp-stub.o
24 endif
25
26 #
27 # Architecture dependencies
28 #
29 ifeq ($(CONFIG_ARCH_ACORN),y)
30 OBJS += ll_char_wr.o font.o
31 endif
32
33 ifeq ($(CONFIG_ARCH_SA1100),y)
34 OBJS += head-sa1100.o
35 endif
36
37 ifeq ($(CONFIG_CPU_XSCALE),y)
38 OBJS += head-xscale.o
39 endif
40
41 ifeq ($(CONFIG_PXA_SHARPSL_DETECT_MACH_ID),y)
42 OBJS += head-sharpsl.o
43 endif
44
45 ifeq ($(CONFIG_CPU_ENDIAN_BE32),y)
46 ifeq ($(CONFIG_CPU_CP15),y)
47 OBJS += big-endian.o
48 else
49 # The endian should be set by h/w design.
50 endif
51 endif
52
53 #
54 # We now have a PIC decompressor implementatio
55 # from RAM should not define ZTEXTADDR. Decom
56 # from ROM or Flash must define ZTEXTADDR (pre
57 # FIXME: Previous assignment to ztextaddr-y is
58 ifeq ($(CONFIG_ZBOOT_ROM),y)
59 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT)
60 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS)
61 else
62 ZTEXTADDR := 0
63 ZBSSADDR := ALIGN(8)
64 endif
65
66 MALLOC_SIZE := 65536
67
68 AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
69 CPPFLAGS_vmlinux.lds := -DTEXT_START="$(ZTEXTA
70 CPPFLAGS_vmlinux.lds += -DTEXT_OFFSET="$(TEXT_
71 CPPFLAGS_vmlinux.lds += -DMALLOC_SIZE="$(MALLO
72
73 compress-$(CONFIG_KERNEL_GZIP) = gzip
74 compress-$(CONFIG_KERNEL_LZO) = lzo_with_size
75 compress-$(CONFIG_KERNEL_LZMA) = lzma_with_siz
76 compress-$(CONFIG_KERNEL_XZ) = xzkern_with_s
77 compress-$(CONFIG_KERNEL_LZ4) = lz4_with_size
78
79 libfdt_objs := fdt_rw.o fdt_ro.o fdt_wip.o fdt
80
81 ifeq ($(CONFIG_ARM_ATAG_DTB_COMPAT),y)
82 CFLAGS_REMOVE_atags_to_fdt.o += -Wframe-larger
83 CFLAGS_atags_to_fdt.o += -Wframe-larger-than=1
84 OBJS += $(libfdt_objs) atags_to_fdt.o
85 endif
86 ifeq ($(CONFIG_USE_OF),y)
87 OBJS += $(libfdt_objs) fdt_check_mem_start.
88 endif
89
90 OBJS += lib1funcs.o ashldi3.o bswapsdi2.o
91
92 targets := vmlinux vmlinux.lds piggy_dat
93 head.o $(OBJS)
94
95 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
96
97 ccflags-y := -fpic $(call cc-option,-mno-singl
98 -I$(srctree)/scripts/dtc/libfdt -
99 -I$(obj) $(DISABLE_ARM_SSP_PER_TA
100 ccflags-remove-$(CONFIG_FUNCTION_TRACER) += -p
101 asflags-y := -DZIMAGE
102
103 # Supply kernel BSS size to the decompressor v
104 KBSS_SZ = $(shell echo $$(($$($(NM) vmlinux |
105 sed -n -e 's/^\([^ ]*\) [ABD]
106 -e 's/^\([^ ]*\) [ABD]
107 LDFLAGS_vmlinux = --defsym _kernel_bss_size=$(
108 # Supply ZRELADDR to the decompressor via a li
109 ifneq ($(CONFIG_AUTO_ZRELADDR),y)
110 LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADD
111 endif
112 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
113 LDFLAGS_vmlinux += --be8
114 endif
115 # Report unresolved symbol references
116 LDFLAGS_vmlinux += --no-undefined
117 # Delete all temporary local symbols
118 LDFLAGS_vmlinux += -X
119 # Report orphan sections
120 ifdef CONFIG_LD_ORPHAN_WARN
121 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG_
122 endif
123 # Next argument is a linker script
124 LDFLAGS_vmlinux += -T
125
126 # We need to prevent any GOTOFF relocs being u
127 # to symbols in the .bss section since we cann
128 # independently from the rest at run time. Th
129 # ensuring that no private .bss symbols exist,
130 # always have a GOT entry which is what we nee
131 # The .data section is already discarded by th
132 # to bother about it here.
133 check_for_bad_syms = \
134 bad_syms=$$($(NM) $@ | sed -n 's/^.\{8\} [bc]
135 [ -z "$$bad_syms" ] || \
136 ( echo "following symbols must have non loca
137 echo "$$bad_syms" >&2; false )
138
139 check_for_multiple_zreladdr = \
140 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_A
141 echo 'multiple zreladdrs: $(ZRELADDR)'
142 echo 'This needs CONFIG_AUTO_ZRELADDR
143 false; \
144 fi
145
146 efi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drive
147
148 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HE
149 $(addprefix $(obj)/, $(OBJS))
150 $(efi-obj-y) FORCE
151 @$(check_for_multiple_zreladdr)
152 $(call if_changed,ld)
153 @$(check_for_bad_syms)
154
155 $(obj)/piggy_data: $(obj)/../Image FORCE
156 $(call if_changed,$(compress-y))
157
158 $(obj)/piggy.o: $(obj)/piggy_data
159
160 CFLAGS_font.o := -Dstatic=
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