3 # User definable variables for bootstrap:
4 # - BOOTSTRAP_CHECK_MD5 set this if you want MD5 checks for modules
5 # - BOOTSTRAP_SEARCH_PATH
7 # - BOOTSTRAP_MODULES_LIST
8 # - BOOTSTRAP_DO_RAW_IMAGE
9 # - BOOTSTRAP_DO_UIMAGE
10 # - BOOTSTRAP_DO_UEFI if set an image which is bootable by UEFI is built
11 # - BOOTSTRAP_NO_STRIP if set no stripping of image
12 # - BOOTSTRAP_UIMAGE_COMPRESSION: set to none, gzip, or bzip2
13 # - BOOTSTRAP_CMDLINE: compiled-in command line, only used if no cmdline
15 # - BOOTSTRAP_OUTPUT_DIR: Optional alternative output directory for all
16 # images (and generated files), preferable some
19 INTERNAL_CRT0 := y # the defualt is to use our internal crt0
20 DEFAULT_RELOC_arm := 0x01000000
21 DEFAULT_RELOC_x86 := 0x002d0000
22 DEFAULT_RELOC_amd64 := 0x002d0000
23 DEFAULT_RELOC_ppc32 := 0x002d0000
24 DEFAULT_RELOC_sparc := 0x00800000
26 LDFLAGS = -nostdlib -static -Bstatic
27 EXTRA_GENERAL_D_DEP += .redo-change-tracker $(BID_RAM_BASE_DEP) \
28 $(wildcard $(L4DIR)/conf/Makeconf.boot $(OBJ_BASE)/conf/Makeconf.boot) \
29 $(SRC_DIR)/build.pl $(BOOTSTRAP_MODULES_LIST)
30 INCLUDE_MAKE_RULES = $(SRC_DIR)/*/Make.rules
31 BOOTSTRAP_LD_dep := $(SRC_DIR)/ldscript.inc
33 ifneq ($(BOOTSTRAP_CHECK_MD5),)
34 REQUIRES_LIBS += libbsd-lite
35 DEFINES += -DDO_CHECK_MD5
38 include $(L4DIR)/mk/Makeconf
39 -include $(OBJ_DIR)/Makeconf.local
40 -include $(L4DIR)/conf/Makeconf.boot
41 -include $(OBJ_BASE)/conf/Makeconf.boot
45 # Checks added Nov 2010:
46 ifneq ($(wildcard $(L4DIR)/conf/Makeconf.bootstrap),)
47 $(error $(L4DIR)/conf/Makeconf.bootstrap not used anymore. Please use $(L4DIR)/conf/Makeconf.boot now)
49 ifneq ($(wildcard $(OBJ_BASE)/Makeconf.bootstrap),)
50 $(error $(OBJ_BASE)/Makeconf.bootstrap not used anymore. Please use $(OBJ_BASE)/conf/Makeconf.boot now)
53 ifeq ($(BOOTSTRAP_DO_UEFI),y)
55 DEFAULT_RELOC_x86 := 0x0
56 DEFAULT_RELOC_amd64 := 0x0
60 # lib gnu-efi requirements
61 REQUIRES_LIBS += gnu-efi
62 EFI_ARCH-amd64 := x86_64
64 EFI_ARCH := $(EFI_ARCH-$(ARCH))
65 EFI_BIN_FMT := efi-app-$(EFI_ARCH)
69 CRT0 = $(OBJ_BASE)/lib/$(SYSTEM)/crt0-efi-$(EFI_ARCH).o
70 EXTRA_LIBS = -L$(OBJ_BASE)/lib/$(SYSTEM) -lefi -lgnuefi
71 CXXFLAGS += -fshort-wchar
72 CFLAGS += -fshort-wchar
75 BOOTSTRAP_SEARCH_PATH ?= $(OBJ_DIR)
76 BOOTSTRAP_MODULES_LIST ?= $(SRC_DIR)/modules.list
77 BOOTSTRAP_MODULE_PATH_BINLIB ?= $(OBJ_BASE)/bin/$(SYSTEM)/$(BUILD_ABI):$(OBJ_BASE)/lib/$(SYSTEM)/$(BUILD_ABI):$(OBJ_BASE)/lib/$(SYSTEM)
78 BOOTSTRAP_ELF_NAME ?= bootstrap.elf
80 BOOTSTRAP_UIMAGE_COMPRESSION ?= none
82 ifeq ($(BUILD_ARCH),$(filter $(BUILD_ARCH),arm ppc32 sparc))
83 # ARM/PPC/SPARC always uses single image mode
84 # when no entry is given we build the useless auto-build target
86 BOOTSTRAP_ELF_NAME := bootstrap.auto-build-useless.elf
88 ENTRY := auto-build-entry
91 od := $(if $(BOOTSTRAP_OUTPUT_DIR),$(if $(wildcard $(BOOTSTRAP_OUTPUT_DIR)),,$(shell mkdir $(BOOTSTRAP_OUTPUT_DIR))))
92 od := $(if $(BOOTSTRAP_OUTPUT_DIR),$(BOOTSTRAP_OUTPUT_DIR)/)
94 PRIVATE_INCDIR = $(SRC_DIR) $(SRC_DIR)/ARCH-$(ARCH)
96 TARGET := $(od)$(BOOTSTRAP_ELF_NAME)
97 TARGET_BIN = $(od)$(BOOTSTRAP_ELF_NAME)
100 include $(SRC_DIR)/Makefile.platform
102 ifneq ($(DEFAULT_RELOC_arm-$(PLATFORM_TYPE)),)
103 DEFAULT_RELOC_arm := $(DEFAULT_RELOC_arm-$(PLATFORM_TYPE))
106 INTERNAL_CRT0 := $(strip $(INTERNAL_CRT0))
108 CXXFLAGS_amd64 += -mno-sse
109 CXXFLAGS_x86 += -mno-sse
110 CFLAGS_amd64 += -mno-sse
111 CFLAGS_x86 += -mno-sse
113 SRC_C += exec.c module.c
114 SRC_CC += region.cc startup.cc init_kip_f.cc \
115 libc_support+.cc patch.cc koptions.cc \
116 platform_common.cc memory.cc boot_modules.cc
118 SRC_CC_x86 += ARCH-x86/reboot.cc
119 SRC_CC_amd64 += ARCH-x86/reboot.cc
120 SRC_C_x86 += base_critical.c
121 SRC_C_amd64 += base_critical.c
122 SRC_CC_arm += ARCH-arm/reboot.cc ARCH-arm/head.cc
123 SRC_CC_ppc32 += ARCH-ppc32/init_kip_v2-arch.cc \
124 ARCH-ppc32/reboot.cc ARCH-ppc32/head.cc
125 SRC_CC_sparc += ARCH-sparc/reboot.cc ARCH-sparc/head.cc
126 SRC_CC += $(SUPPORT_CC_$(ARCH)-$(PLATFORM_TYPE))
128 SRC_S-$(INTERNAL_CRT0) += ARCH-$(ARCH)/crt0.S
130 OPTS = -g -Os $(CARCHFLAGS_$(ARCH)) $(CARCHFLAGS_$(ARCH)_$(CPU)) \
132 DEFINES += -DRAM_BASE=$(RAM_BASE) -DL4_MINIMAL_LIBC=1
133 DEFINES += -DCMDLINE="\"$(BOOTSTRAP_CMDLINE)\""
134 DEFINES += -DPLATFORM_TYPE=\"$(PLATFORM_TYPE)\"
135 DEFINES += -DPLATFORM_TYPE_$(PLATFORM_TYPE)
136 DEFINES += -DPLATFORM_UART_NR=$(PLATFORM_UART_NR)
138 MOD_ADDR = 0x02000000
141 CPPFLAGS += $(CPPFLAGS_$(ARCH)-$(PLATFORM_TYPE))
142 CPPFLAGS += $(BID_PKG_CONFIG_CFLAGS)
144 ifeq ($(filter clean cleanall,$(MAKECMDGOALS)),)
145 ifeq ($(SUPPORT_CC_$(ARCH)-$(PLATFORM_TYPE)),)
146 $(info ERROR: PLATFORM_TYPE=$(PLATFORM_TYPE) has no assigned platform support file)
147 $(info ERROR: A proper PLATFORM_TYPE must be set for a build)
152 BOOTSTRAP_L4_LIBS := -lcxx_base -lcxx_io -luc_c_minimal
153 DRV_LIBS-ppc32 = -ldrivers_of
154 DRV_LIBS = -ldrivers_uart $(DRV_LIBS-$(ARCH))
155 ifeq ($(INTERNAL_CRT0),y)
158 LDSCRIPT = bootstrap.ld
161 vpath bootstrap.ld.in $(SRC_DIR)/ARCH-$(ARCH)
163 # can be overwritten by Makeconf.local
165 REALMODE_LOADING ?= 0
170 ifeq ($(BUILD_PIE),1)
171 DRV_LIBS := $(patsubst -l%,-l%.p,$(DRV_LIBS))
172 BOOTSTRAP_L4_LIBS := $(patsubst -l%,-l%.p,$(BOOTSTRAP_L4_LIBS))
176 LDFLAGS = -znocombreloc -nostdlib -pie -Bsymbolic
179 ifneq ($(REALMODE_LOADING)$(RML),00)
180 REALMODE_LOADING := 1
181 $(error Info: Default reloc needs to be 0x00100000)
182 # And if you have done so you probably need to relink sigma0 and/or moe
186 CPPFLAGS += -DSINGLE_SECTION
196 ENTRY_FN := $(shell echo "$(ENTRY)" | tr '[ ]' '[_]' )
200 ifeq ($(filter clean cleanall,$(MAKECMDGOALS)),)
201 BUILD_MOD_CMD = ( SEARCHPATH="$(BOOTSTRAP_SEARCH_PATH):$(BOOTSTRAP_MODULE_PATH_BINLIB)" \
202 CC="$(CC)" LD="$(LD)" CROSS_COMPILE=$(CROSS_COMPILE) \
203 MAKE_INC_FILE=$(PWD)/mod.make.inc \
204 FLAGS_CC="$(CCXX_FLAGS) -I$(SRC_DIR)" \
205 OUTPUT_DIR="$(BOOTSTRAP_OUTPUT_DIR)" \
206 OPT_ARCH=$(ARCH) OPT_COMPRESS=$(COMPRESS) L4DIR=$(L4DIR) \
207 $(SRC_DIR)/build.pl $(1) $(BOOTSTRAP_MODULES_LIST) "$(ENTRY)" || \
208 (echo "processing-of-module-list-failed"; exit 1))
213 # we need to re-do if some things change
214 .redo-change-tracker: FORCE
215 $(VERBOSE)echo "$(ENTRY) '$(COMPRESS)' '$(BOOTSTRAP_CMDLINE)' '$(BOOTSTRAP_SEARCH_PATH):$(BOOTSTRAP_MODULE_PATH_BINLIB)' '$(RAM_SIZE_MB)' '$(PLATFORM_TYPE)' '$(PLATFORM_UART_NR)' '$(od)' '$(OPT_STRIP)'" > $@.tmp
216 $(if $(BUILD_MOD_CMD),$(VERBOSE)$(call BUILD_MOD_CMD,dump) >> $@.tmp)
217 $(call move_if_changed,$@,$@.tmp)
221 INSTALL_FILES = $(BOOTSTRAP_ELF_NAME) bootstrap_$(ENTRY_FN) bootstrap_$(ENTRY_FN).elf
222 ifeq ($(ARCH)$(BOOTSTRAP_DO_UEFI),amd64)
223 INSTALL_FILES += bootstrap32.elf
224 BOOTSTRAP_LINK_SOURCE = bootstrap32.elf
226 BOOTSTRAP_LINK_SOURCE = $(BOOTSTRAP_ELF_NAME)
229 ifeq ($(BOOTSTRAP_DO_UEFI),y)
230 INSTALL_FILES += bootstrap_$(ENTRY_FN).efi bootstrap.efi
233 $(od)bootstrap_$(ENTRY_FN): $(od)$(BOOTSTRAP_LINK_SOURCE)
234 $(VERBOSE)$(LN) -f $< $@
236 $(od)bootstrap_$(ENTRY_FN).elf: $(od)$(BOOTSTRAP_LINK_SOURCE)
237 $(VERBOSE)$(LN) -f $< $@
239 $(od)bootstrap_$(ENTRY_FN).%: $(od)bootstrap.%
240 $(VERBOSE)$(LN) -f $< $@
242 ifeq ($(ARCH),$(filter $(ARCH),arm ppc32))
243 BID_POST_PROG_LINK_MSG_$(od)$(BOOTSTRAP_ELF_NAME) = echo -e " ==> Post-processing $@"
244 BID_POST_PROG_LINK_$(od)$(BOOTSTRAP_ELF_NAME) = \
245 $(VERBOSE)LANG=C $(NM) -C $@ | \
246 LANG=C $(GREP) -E ' D __PLATFORMS_(BEGIN|END)$$' | \
247 (read a i; read b i; \
248 if [ "$$a" = "$$b" ]; then \
249 echo -e "\nERROR: Missing at least one platform instantiation.\n"; \
253 $(if $(BOOTSTRAP_NO_STRIP),,$(STRIP) $@)
255 ifneq ($(BOOTSTRAP_DO_RAW_IMAGE)$(BOOTSTRAP_DO_UIMAGE),)
256 BOOTSTRAP_RAW := $(od)bootstrap.raw
257 INSTALL_FILES += bootstrap.raw bootstrap_$(ENTRY_FN).raw
258 ifneq ($(BOOTSTRAP_DO_UIMAGE),)
259 ifneq ($(shell command -v $(MKIMAGE)),)
260 BOOTSTRAP_UIMAGE := $(od)bootstrap.uimage
261 INSTALL_FILES += bootstrap.uimage bootstrap_$(ENTRY_FN).uimage
263 $(error mkimage($(MKIMAGE)) host tool missing, cannot build bootstrap.uimage)
269 ifneq ($(ENTRY),auto-build-entry)
270 all:: $(addprefix $(IMAGES_DIR)/,$(INSTALL_FILES))
271 $(VERBOSE)echo " Image size(s) in bytes:"
272 $(VERBOSE)for f in $(filter bootstrap_$(ENTRY_FN).elf bootstrap.raw bootstrap.uimage, $(INSTALL_FILES)); do \
273 find $(if $(od),$(od),.) -name $$f -printf " %30f: %s\n"; \
275 $(if $(LDFLAGS_bootstrap.elf),$(VERBOSE)echo " Start address: $(patsubst --defsym=__executable_start=%,%,$(LDFLAGS_bootstrap.elf))")
276 $(VERBOSE)echo " --> Build-Nr: $$(cat .build_nr)"
278 # install images into easy to reach directory in build dir
279 $(IMAGES_DIR)/%: $(od)%
280 $(VERBOSE)echo " ==> Installing $< in image directory"
281 $(VERBOSE)(cd $(dir $@) && $(LN) -sf $(if $(od),,$(PWD)/)$<)
282 endif # !auto-build-entry
285 INSTALL_FILES = bootstrap
288 ifneq ($(REALMODE_LOADING),0)
289 CPPFLAGS += -DREALMODE_LOADING -DSINGLE_SECTION
290 # don't install bootstrap_$(ENTRY_FN).elf
291 INSTALL_FILES = bootstrap.load
292 MOD_ADDR = 0x00150000
295 ifneq ($(COMPRESS),0)
296 SRC_C += uncompress.c gunzip.c
297 CFLAGS_gunzip.c := -fno-strict-aliasing
298 CPPFLAGS += -DCOMPRESS
302 ifeq ($(SPARSE_ELF),y)
303 CPPFLAGS += -DPLACE_MODULES_AT_MODADDR
306 ifneq ($(RAM_SIZE_MB),)
307 CPPFLAGS += -DRAM_SIZE_MB=$(RAM_SIZE_MB)
310 CXXFLAGS += -fno-rtti -fno-exceptions
311 CXXFLAGS += $(call checkcxx,-fno-threadsafe-statics)
313 ifneq ($(BUILD_MOD_CMD),)
314 ifeq ($(filter clean cleanall,$(MAKECMDGOALS)),)
316 processing-of-module-list-failed:
318 @echo " Processing of $(BOOTSTRAP_MODULES_LIST) failed!"
322 mod.make.inc $(od)mbi_modules.bin: $(GENERAL_D_LOC) $(shell $(call BUILD_MOD_CMD,list))
323 @echo Building entry \""$(ENTRY)"\".
324 $(VERBOSE)$(call BUILD_MOD_CMD,build)
326 -include mod.make.inc
327 BOOTSTRAP_LD_dep += mod.make.inc
328 STARTUP_C_dep := mod.make.inc
329 OBJS_$(od)$(BOOTSTRAP_ELF_NAME) += $(MODULE_OBJECT_FILES)
332 CPPFLAGS += -DIMAGE_MODE
335 CPPFLAGS += -DMODADDR=$(MOD_ADDR)
338 L4_LIBS = $(DRV_LIBS) $(BOOTSTRAP_L4_LIBS)
339 L4_LIBS += $(GCCLIB) $(EXTRA_LIBS)
341 all:: $(BOOTSTRAP_RAW)
343 # image for use with pxelinux
344 bootstrap.load: $(TARGET_BIN) bootsect.o.img setup.o.img
346 $(VERBOSE)objcopy -O binary -R .note -R .comment -S $< $<.load.bin
347 $(VERBOSE)cat bootsect.o.img setup.o.img $<.load.bin > $@
349 bootsect.o.img: ARCH-x86/bootsect.S $(SRC_DIR)/Makefile $(SRC_DIR)/Make.rules
351 $(VERBOSE)$(CC) -traditional -nostdinc -nostdlib -c $<
352 $(VERBOSE)$(LD) -m elf_i386 -Ttext 0x0 -o $@ -s --oformat binary \
354 $(VERBOSE)chmod -x $@
356 setup.o.img: ARCH-x86/setup.S $(SRC_DIR)/Makefile $(SRC_DIR)/Make.rules
358 $(VERBOSE)$(CC) -traditional -nostdinc -nostdlib -DARCH_$(ARCH) -c $<
359 $(VERBOSE)$(LD) -m elf_i386 -Ttext 0x0 -o $@ -s --oformat binary \
361 $(VERBOSE)dd if=/dev/zero bs=1 count=$$((3072 - `wc -c < setup.o.img`)) >> setup.o.img 2> /dev/null
362 $(VERBOSE)chmod -x $@
364 # raw version without ELF, primarily useful for ARM
365 $(BOOTSTRAP_RAW): $(TARGET_BIN)
367 $(VERBOSE)cp $< $@.tmp
368 $(VERBOSE)$(OBJCOPY) -O binary $@.tmp $@
369 $(VERBOSE)chmod -x $@
370 $(VERBOSE)$(RM) $@.tmp
381 MKIMAGE_ARCH = $(if $(filter ppc32,$(ARCH)),ppc,$(ARCH))
383 # u-boot image, based on raw-version
384 $(BOOTSTRAP_UIMAGE): $(BOOTSTRAP_RAW).$(BOOTSTRAP_UIMAGE_COMPRESSION)
386 @# mkimage writes the same file which does not play well with hardlinks
387 $(VERBOSE)$(RM) -f $@
388 $(VERBOSE)$(MKIMAGE) -e $(call default_reloc,$(ARCH)) \
389 -a $(call default_reloc,$(ARCH)) -A $(MKIMAGE_ARCH) \
390 -C $(BOOTSTRAP_UIMAGE_COMPRESSION) \
391 -n "L4 Image #$$(cat .build_nr)" \
394 $(TARGET): $(LDSCRIPT) $(OBJS_$(TARGET))
397 increment_build_nr = \
398 $(shell if [ -e .build_nr ]; then \
399 nr=$$(($$(cat .build_nr) + 1)); \
403 echo $$nr > .build_nr; echo $$nr)
406 startup.o: $(STARTUP_C_dep)
407 startup.o: CPPFLAGS += -DBUILD_DATE="\"$(shell date)\"" -DBUILD_NR=\"$(call increment_build_nr)\"
409 $(LDSCRIPT): $(LDSCRIPT).in $(GENERAL_D_LOC) $(BOOTSTRAP_LD_dep)
411 $(VERBOSE)$(CROSS_COMPILE)cpp -P $(CPPFLAGS) -DLINKADDR=$(strip $(call default_reloc,$(ARCH))) $< $@;
414 $(VERBOSE)$(RM) mod.make.inc mod*.bin mbi_modules.bin $(LDSCRIPT)
415 $(VERBOSE)$(RM) setup.o.img bootsect.o.img
416 $(VERBOSE)$(RM) mod*.bin
417 $(VERBOSE)$(RM) $(SRC32_C:.c=.o32) $(SRC32_S:.S=.o32)
418 $(VERBOSE)$(RM) .redo-change-tracker
421 $(VERBOSE)$(RM) $(od)bootstrap_* $(od)bootstrap.*
423 bootstrap.efi: bootstrap.elf
424 $(OBJCOPY) -S -j .text -j .rodata -j .reloc -j .dynsym -j .dynstr -j .rel.dyn \
426 -j .data.module_info -j .dynamic -j .rela.dyn -j .rela.plt -j .reloc \
427 -j .bss -j .module_data \
428 --target=$(EFI_BIN_FMT) $< $@
432 vpath %.c $(SRC_DIR)/ARCH-amd64
433 vpath %.S $(SRC_DIR)/ARCH-amd64
434 vpath %.c $(SRC_DIR)/ARCH-amd64/boot32
435 vpath %.S $(SRC_DIR)/ARCH-amd64/boot32
436 vpath bootstrap.ld.in $(SRC_DIR)/ARCH-x86
438 SRC32_C = boot_cpu.c boot_kernel.c load_elf.c minilibc_support.c
439 SRC32_S = boot.S boot_idt.S
440 OBJ32 = $(SRC32_S:.S=.o32) $(SRC32_C:.c=.o32)
441 CC32 = $(filter-out -m64, $(CC)) -m32
442 CFLAGS32 = $(filter-out -m64, $(CFLAGS) $(CFLAGS_$(ARCH))) -m32 $(GCCNOSTACKPROTOPT)
444 $(OBJ_DIR)/ARCH-amd64/libc32/OBJ-$(ARCH)_$(CPU)/libc32.a: FORCE
445 $(VERBOSE)$(MAKE) O=$(OBJ_BASE) -C $(SRC_DIR)/ARCH-amd64/libc32
447 bootstrap32.elf: $(OBJ32) bootstrap32.bin $(SRC_DIR)/ARCH-amd64/boot32/bootstrap32.ld $(OBJ_DIR)/ARCH-amd64/libc32/OBJ-$(ARCH)_$(CPU)/libc32.a
449 $(VERBOSE)$(CC32) -o $@ -nostdlib -static \
450 -Wl,-T,$(SRC_DIR)/ARCH-amd64/boot32/bootstrap32.ld,--gc-sections $^ -lgcc
451 $(VERBOSE)chmod 755 $@
453 bootstrap: bootstrap32.elf
454 $(VERBOSE)$(LN) -f $^ $@
456 bootstrap32.bin: $(BOOTSTRAP_ELF_NAME)
458 $(VERBOSE)$(OBJCOPY) -S $< bootstrap64.bin
459 $(VERBOSE)chmod -x bootstrap64.bin
460 $(VERBOSE)$(OBJCOPY) -B i386 -I binary -O elf32-i386 bootstrap64.bin $@
462 %.o32: %.c $(SRC_DIR)/Makefile $(SRC_DIR)/Make.rules
464 $(VERBOSE)$(CC32) -o $@ -c $(DEPEND_FLAG) \
465 $(CPPFLAGS) $(CFLAGS32) $(call absfilename,$<)
467 %.o32: %.S $(SRC_DIR)/Makefile $(SRC_DIR)/Make.rules
469 $(VERBOSE)$(CC32) -o $@ -c $(DEPEND_FLAG) \
470 $(CPPFLAGS) $(CFLAGS32) $(call absfilename,$<)
473 $(VERBOSE)PWD=$(call absfilename,$(SRC_DIR)/ARCH-amd64/libc32) \
474 $(MAKE) -C $(SRC_DIR)/ARCH-amd64/libc32 $@
477 bootstrap: $(BOOTSTRAP_ELF_NAME)
478 $(VERBOSE)$(LN) -f $^ $@
481 INSTALL_TARGET := $(if $(od),,$(INSTALL_FILES))