Loading...
1#
2# arch/x86/boot/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8# Copyright (C) 1994 by Linus Torvalds
9# Changed by many, many contributors over the years.
10#
11
12# If you want to preset the SVGA mode, uncomment the next line and
13# set SVGA_MODE to whatever number you want.
14# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
15# The number is the same as you would ordinarily press at bootup.
16
17SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
18
19targets := vmlinux.bin setup.bin setup.elf bzImage
20targets += fdimage fdimage144 fdimage288 image.iso mtools.conf
21subdir- := compressed
22
23setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpucheck.o
24setup-y += early_serial_console.o edd.o header.o main.o mca.o memory.o
25setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
26setup-y += video-mode.o version.o
27setup-$(CONFIG_X86_APM_BOOT) += apm.o
28
29# The link order of the video-*.o modules can matter. In particular,
30# video-vga.o *must* be listed first, followed by video-vesa.o.
31# Hardware-specific drivers should follow in the order they should be
32# probed, and video-bios.o should typically be last.
33setup-y += video-vga.o
34setup-y += video-vesa.o
35setup-y += video-bios.o
36
37targets += $(setup-y)
38hostprogs-y := mkcpustr tools/build
39
40HOST_EXTRACFLAGS += $(LINUXINCLUDE)
41
42$(obj)/cpu.o: $(obj)/cpustr.h
43
44quiet_cmd_cpustr = CPUSTR $@
45 cmd_cpustr = $(obj)/mkcpustr > $@
46targets += cpustr.h
47$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
48 $(call if_changed,cpustr)
49
50# ---------------------------------------------------------------------------
51
52# How to compile the 16-bit code. Note we always compile for -march=i386,
53# that way we can complain to the user if the CPU is insufficient.
54KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
55 -DDISABLE_BRANCH_PROFILING \
56 -Wall -Wstrict-prototypes \
57 -march=i386 -mregparm=3 \
58 -include $(srctree)/$(src)/code16gcc.h \
59 -fno-strict-aliasing -fomit-frame-pointer \
60 $(call cc-option, -ffreestanding) \
61 $(call cc-option, -fno-toplevel-reorder,\
62 $(call cc-option, -fno-unit-at-a-time)) \
63 $(call cc-option, -fno-stack-protector) \
64 $(call cc-option, -mpreferred-stack-boundary=2)
65KBUILD_CFLAGS += $(call cc-option, -m32)
66KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
67GCOV_PROFILE := n
68
69$(obj)/bzImage: asflags-y := $(SVGA_MODE)
70
71quiet_cmd_image = BUILD $@
72cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin > $@
73
74$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
75 $(call if_changed,image)
76 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
77
78OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
79$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
80 $(call if_changed,objcopy)
81
82SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
83
84sed-voffset := -e 's/^\([0-9a-fA-F]*\) . \(_text\|_end\)$$/\#define VO_\2 0x\1/p'
85
86quiet_cmd_voffset = VOFFSET $@
87 cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
88
89targets += voffset.h
90$(obj)/voffset.h: vmlinux FORCE
91 $(call if_changed,voffset)
92
93sed-zoffset := -e 's/^\([0-9a-fA-F]*\) . \(startup_32\|input_data\|_end\|z_.*\)$$/\#define ZO_\2 0x\1/p'
94
95quiet_cmd_zoffset = ZOFFSET $@
96 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
97
98targets += zoffset.h
99$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
100 $(call if_changed,zoffset)
101
102
103AFLAGS_header.o += -I$(obj)
104$(obj)/header.o: $(obj)/voffset.h $(obj)/zoffset.h
105
106LDFLAGS_setup.elf := -T
107$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
108 $(call if_changed,ld)
109
110OBJCOPYFLAGS_setup.bin := -O binary
111$(obj)/setup.bin: $(obj)/setup.elf FORCE
112 $(call if_changed,objcopy)
113
114$(obj)/compressed/vmlinux: FORCE
115 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
116
117# Set this if you want to pass append arguments to the
118# bzdisk/fdimage/isoimage kernel
119FDARGS =
120# Set this if you want an initrd included with the
121# bzdisk/fdimage/isoimage kernel
122FDINITRD =
123
124image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
125
126$(obj)/mtools.conf: $(src)/mtools.conf.in
127 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
128
129# This requires write access to /dev/fd0
130bzdisk: $(obj)/bzImage $(obj)/mtools.conf
131 MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
132 syslinux /dev/fd0 ; sync
133 echo '$(image_cmdline)' | \
134 MTOOLSRC=$(src)/mtools.conf mcopy - a:syslinux.cfg
135 if [ -f '$(FDINITRD)' ] ; then \
136 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
137 fi
138 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync
139
140# These require being root or having syslinux 2.02 or higher installed
141fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
142 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
143 MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
144 syslinux $(obj)/fdimage ; sync
145 echo '$(image_cmdline)' | \
146 MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg
147 if [ -f '$(FDINITRD)' ] ; then \
148 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
149 fi
150 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync
151
152fdimage288: $(obj)/bzImage $(obj)/mtools.conf
153 dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
154 MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
155 syslinux $(obj)/fdimage ; sync
156 echo '$(image_cmdline)' | \
157 MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg
158 if [ -f '$(FDINITRD)' ] ; then \
159 MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
160 fi
161 MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync
162
163isoimage: $(obj)/bzImage
164 -rm -rf $(obj)/isoimage
165 mkdir $(obj)/isoimage
166 for i in lib lib64 share end ; do \
167 if [ -f /usr/$$i/syslinux/isolinux.bin ] ; then \
168 cp /usr/$$i/syslinux/isolinux.bin $(obj)/isoimage ; \
169 break ; \
170 fi ; \
171 if [ $$i = end ] ; then exit 1 ; fi ; \
172 done
173 cp $(obj)/bzImage $(obj)/isoimage/linux
174 echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
175 if [ -f '$(FDINITRD)' ] ; then \
176 cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
177 fi
178 mkisofs -J -r -o $(obj)/image.iso -b isolinux.bin -c boot.cat \
179 -no-emul-boot -boot-load-size 4 -boot-info-table \
180 $(obj)/isoimage
181 isohybrid $(obj)/image.iso 2>/dev/null || true
182 rm -rf $(obj)/isoimage
183
184bzlilo: $(obj)/bzImage
185 if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
186 if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
187 cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
188 cp System.map $(INSTALL_PATH)/
189 if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
190
191install:
192 sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
193 System.map "$(INSTALL_PATH)"
1#
2# arch/x86/boot/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8# Copyright (C) 1994 by Linus Torvalds
9# Changed by many, many contributors over the years.
10#
11
12# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
13KASAN_SANITIZE := n
14KCSAN_SANITIZE := n
15KMSAN_SANITIZE := n
16OBJECT_FILES_NON_STANDARD := y
17
18# Kernel does not boot with kcov instrumentation here.
19# One of the problems observed was insertion of __sanitizer_cov_trace_pc()
20# callback into middle of per-cpu data enabling code. Thus the callback observed
21# inconsistent state and crashed. We are interested mostly in syscall coverage,
22# so boot code is not interesting anyway.
23KCOV_INSTRUMENT := n
24
25# If you want to preset the SVGA mode, uncomment the next line and
26# set SVGA_MODE to whatever number you want.
27# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
28# The number is the same as you would ordinarily press at bootup.
29
30SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
31
32targets := vmlinux.bin setup.bin setup.elf bzImage
33targets += fdimage fdimage144 fdimage288 image.iso hdimage
34subdir- := compressed
35
36setup-y += a20.o bioscall.o cmdline.o copy.o cpu.o cpuflags.o cpucheck.o
37setup-y += early_serial_console.o edd.o header.o main.o memory.o
38setup-y += pm.o pmjump.o printf.o regs.o string.o tty.o video.o
39setup-y += video-mode.o version.o
40setup-$(CONFIG_X86_APM_BOOT) += apm.o
41
42# The link order of the video-*.o modules can matter. In particular,
43# video-vga.o *must* be listed first, followed by video-vesa.o.
44# Hardware-specific drivers should follow in the order they should be
45# probed, and video-bios.o should typically be last.
46setup-y += video-vga.o
47setup-y += video-vesa.o
48setup-y += video-bios.o
49
50targets += $(setup-y)
51hostprogs := tools/build
52hostprogs += mkcpustr
53
54HOST_EXTRACFLAGS += -I$(srctree)/tools/include \
55 -include include/generated/autoconf.h \
56 -D__EXPORTED_HEADERS__
57
58$(obj)/cpu.o: $(obj)/cpustr.h
59
60quiet_cmd_cpustr = CPUSTR $@
61 cmd_cpustr = $(obj)/mkcpustr > $@
62$(obj)/cpustr.h: $(obj)/mkcpustr FORCE
63 $(call if_changed,cpustr)
64targets += cpustr.h
65
66# ---------------------------------------------------------------------------
67
68KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP
69KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
70KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
71KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
72GCOV_PROFILE := n
73UBSAN_SANITIZE := n
74
75$(obj)/bzImage: asflags-y := $(SVGA_MODE)
76
77quiet_cmd_image = BUILD $@
78silent_redirect_image = >/dev/null
79cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
80 $(obj)/zoffset.h $@ $($(quiet)redirect_image)
81
82$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
83 $(call if_changed,image)
84 @$(kecho) 'Kernel: $@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
85
86OBJCOPYFLAGS_vmlinux.bin := -O binary -R .note -R .comment -S
87$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE
88 $(call if_changed,objcopy)
89
90SETUP_OBJS = $(addprefix $(obj)/,$(setup-y))
91
92sed-zoffset := -e 's/^\([0-9a-fA-F]*\) [a-zA-Z] \(startup_32\|efi.._stub_entry\|efi\(32\)\?_pe_entry\|input_data\|kernel_info\|_end\|_ehead\|_text\|_e\?data\|z_.*\)$$/\#define ZO_\2 0x\1/p'
93
94quiet_cmd_zoffset = ZOFFSET $@
95 cmd_zoffset = $(NM) $< | sed -n $(sed-zoffset) > $@
96
97targets += zoffset.h
98$(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
99 $(call if_changed,zoffset)
100
101
102AFLAGS_header.o += -I$(objtree)/$(obj)
103$(obj)/header.o: $(obj)/zoffset.h
104
105LDFLAGS_setup.elf := -m elf_i386 -z noexecstack -T
106$(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
107 $(call if_changed,ld)
108
109OBJCOPYFLAGS_setup.bin := -O binary
110$(obj)/setup.bin: $(obj)/setup.elf FORCE
111 $(call if_changed,objcopy)
112
113$(obj)/compressed/vmlinux: FORCE
114 $(Q)$(MAKE) $(build)=$(obj)/compressed $@
115
116# Set this if you want to pass append arguments to the
117# bzdisk/fdimage/hdimage/isoimage kernel
118FDARGS =
119# Set this if you want one or more initrds included in the image
120FDINITRD =
121
122imgdeps = $(obj)/bzImage $(obj)/mtools.conf $(src)/genimage.sh
123
124$(obj)/mtools.conf: $(src)/mtools.conf.in
125 sed -e 's|@OBJ@|$(obj)|g' < $< > $@
126
127targets += mtools.conf
128
129# genimage.sh requires bash, but it also has a bunch of other
130# external dependencies.
131quiet_cmd_genimage = GENIMAGE $3
132cmd_genimage = $(BASH) $(srctree)/$(src)/genimage.sh $2 $3 $(obj)/bzImage \
133 $(obj)/mtools.conf '$(FDARGS)' $(FDINITRD)
134
135PHONY += bzdisk fdimage fdimage144 fdimage288 hdimage isoimage
136
137# This requires write access to /dev/fd0
138# All images require syslinux to be installed; hdimage also requires
139# EDK2/OVMF if the kernel is compiled with the EFI stub.
140bzdisk: $(imgdeps)
141 $(call cmd,genimage,bzdisk,/dev/fd0)
142
143fdimage fdimage144: $(imgdeps)
144 $(call cmd,genimage,fdimage144,$(obj)/fdimage)
145 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
146
147fdimage288: $(imgdeps)
148 $(call cmd,genimage,fdimage288,$(obj)/fdimage)
149 @$(kecho) 'Kernel: $(obj)/fdimage is ready'
150
151hdimage: $(imgdeps)
152 $(call cmd,genimage,hdimage,$(obj)/hdimage)
153 @$(kecho) 'Kernel: $(obj)/hdimage is ready'
154
155isoimage: $(imgdeps)
156 $(call cmd,genimage,isoimage,$(obj)/image.iso)
157 @$(kecho) 'Kernel: $(obj)/image.iso is ready'