1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # linux/arch/arm/boot/compressed/Makefile !! 2 # linux/arch/i386/boot/compressed/Makefile
4 # 3 #
5 # create a compressed vmlinuz image from the o !! 4 # create a compressed vmlinux image from the original vmlinux
6 # 5 #
7 6
8 OBJS = !! 7 HEAD = head.o
>> 8 SYSTEM = $(TOPDIR)/vmlinux
9 9
10 HEAD = head.o !! 10 OBJECTS = $(HEAD) misc.o
11 OBJS += misc.o decompress.o !! 11
12 CFLAGS_decompress.o += $(DISABLE_STACKLEAK_PLU !! 12 ZLDFLAGS = -e startup_32
13 ifeq ($(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 ($(CONFIG_ARM_VIRT_EXT),y) <<
23 OBJS += hyp-stub.o <<
24 endif <<
25 13
26 # 14 #
27 # Architecture dependencies !! 15 # ZIMAGE_OFFSET is the load offset of the compression loader
>> 16 # BZIMAGE_OFFSET is the load offset of the high loaded compression loader
28 # 17 #
29 ifeq ($(CONFIG_ARCH_ACORN),y) !! 18 ZIMAGE_OFFSET = 0x1000
30 OBJS += ll_char_wr.o font.o !! 19 BZIMAGE_OFFSET = 0x100000
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 20
53 # !! 21 ZLINKFLAGS = -Ttext $(ZIMAGE_OFFSET) $(ZLDFLAGS)
54 # We now have a PIC decompressor implementatio !! 22 BZLINKFLAGS = -Ttext $(BZIMAGE_OFFSET) $(ZLDFLAGS)
55 # from RAM should not define ZTEXTADDR. Decom !! 23
56 # from ROM or Flash must define ZTEXTADDR (pre !! 24 all: vmlinux
57 # FIXME: Previous assignment to ztextaddr-y is !! 25
58 ifeq ($(CONFIG_ZBOOT_ROM),y) !! 26 vmlinux: piggy.o $(OBJECTS)
59 ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) !! 27 $(LD) $(ZLINKFLAGS) -o vmlinux $(OBJECTS) piggy.o
60 ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) !! 28
61 else !! 29 bvmlinux: piggy.o $(OBJECTS)
62 ZTEXTADDR := 0 !! 30 $(LD) $(BZLINKFLAGS) -o bvmlinux $(OBJECTS) piggy.o
63 ZBSSADDR := ALIGN(8) !! 31
64 endif !! 32 head.o: head.S
65 !! 33 $(CC) $(AFLAGS) -traditional -c head.S
66 MALLOC_SIZE := 65536 !! 34
67 !! 35 comma := ,
68 AFLAGS_head.o += -DTEXT_OFFSET=$(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 "$$bad_syms" >&2; false ) <<
138 <<
139 check_for_multiple_zreladdr = \ <<
140 if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_A <<
141 echo 'multiple zreladdrs: $(ZRELADDR)' <<
142 echo 'This needs CONFIG_AUTO_ZRELADDR <<
143 false; \ <<
144 fi <<
145 <<
146 efi-obj-$(CONFIG_EFI_STUB) := $(objtree)/drive <<
147 <<
148 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HE <<
149 $(addprefix $(obj)/, $(OBJS)) <<
150 $(efi-obj-y) FORCE <<
151 @$(check_for_multiple_zreladdr) <<
152 $(call if_changed,ld) <<
153 @$(check_for_bad_syms) <<
154 36
155 $(obj)/piggy_data: $(obj)/../Image FORCE !! 37 misc.o: misc.c
156 $(call if_changed,$(compress-y)) !! 38 $(CC) $(CFLAGS) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) -c misc.c
157 39
158 $(obj)/piggy.o: $(obj)/piggy_data !! 40 piggy.o: $(SYSTEM)
>> 41 tmppiggy=_tmp_$$$$piggy; \
>> 42 rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk; \
>> 43 $(OBJCOPY) $(SYSTEM) $$tmppiggy; \
>> 44 gzip -f -9 < $$tmppiggy > $$tmppiggy.gz; \
>> 45 echo "SECTIONS { .data : { input_len = .; LONG(input_data_end - input_data) input_data = .; *(.data) input_data_end = .; }}" > $$tmppiggy.lnk; \
>> 46 $(LD) -r -o piggy.o -b binary $$tmppiggy.gz -b elf32-i386 -T $$tmppiggy.lnk; \
>> 47 rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk
159 48
160 CFLAGS_font.o := -Dstatic= !! 49 clean:
>> 50 rm -f vmlinux bvmlinux _tmp_*
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