3 # Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
5 # This file may be distributed under the terms of the GNU LGPLv3 license.
8 VERSION=1.6.3-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)
14 SRCBOTH=misc.c stacks.c pmm.c output.c util.c block.c floppy.c ata.c mouse.c \
15 kbd.c pci.c serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
16 pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c blockcmd.c \
17 usb.c usb-uhci.c usb-ohci.c usb-ehci.c usb-hid.c usb-msc.c \
18 virtio-ring.c virtio-pci.c virtio-blk.c apm.c ahci.c
19 SRC16=$(SRCBOTH) system.c disk.c font.c
20 SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
21 acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
22 lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c \
23 biostables.c xen.c bmp.c
24 SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c
26 cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
27 /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
29 # Default compiler flags
30 COMMONCFLAGS = -I$(OUT) -Os -MD \
31 -Wall -Wno-strict-aliasing -Wold-style-definition \
32 $(call cc-option,$(CC),-Wtype-limits,) \
33 -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
34 -mrtd -minline-all-stringops \
35 -freg-struct-return -ffreestanding -fomit-frame-pointer \
36 -fno-delete-null-pointer-checks \
37 -ffunction-sections -fdata-sections -fno-common
38 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
39 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
40 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
42 CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
43 CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
44 $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
45 $(call cc-option,$(CC),-fno-tree-switch-conversion,)
46 CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
47 CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
48 $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
49 CFLAGS16 = $(CFLAGS16INC) -g
51 all: $(OUT) $(OUT)bios.bin
53 # Run with "make V=1" to see the actual compile commands
58 MAKEFLAGS += --no-print-directory
65 .PHONY : all clean distclean FORCE
70 ################ Build rules
72 # Verify the gcc configuration and test if -fwhole-program works.
73 TESTGCC:=$(shell CC="$(CC)" LD="$(LD)" tools/test-gcc.sh)
74 ifeq "$(TESTGCC)" "-1"
75 $(error "Please upgrade GCC and/or binutils")
82 # Do a whole file compile - three methods are supported.
83 ifeq "$(COMPSTRAT)" "1"
84 # First method - use -fwhole-program without -combine.
86 @echo " Compiling whole program $3"
87 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
88 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
91 ifeq "$(COMPSTRAT)" "2"
92 # Second menthod - don't use -fwhole-program at all.
94 @echo " Compiling whole program $3"
95 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
96 $(Q)$(CC) $1 -c $3.tmp.c -o $3
99 # Third (and preferred) method - use -fwhole-program with -combine
101 @echo " Compiling whole program $3"
102 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
108 @echo " Stripping $@"
109 $(Q)$(STRIP) $< -o $@
112 @echo " Compiling to assembler $@"
113 $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
116 @echo " Precompiling $@"
117 $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
119 $(OUT)asm-offsets.s: $(OUT)autoconf.h
121 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
122 @echo " Generating offset file $@"
123 $(Q)./tools/gen-offsets.sh $< $@
126 $(OUT)ccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
128 $(OUT)code32seg.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
130 $(OUT)ccode32flat.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
132 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
133 @echo " Compiling (16bit) $@"
134 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
136 $(OUT)romlayout16.lds: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
137 @echo " Building ld scripts (version \"$(VERSION)\")"
138 $(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
139 $(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
140 $(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
141 $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
142 $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
143 $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
144 $(Q)./tools/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32seg.o.objdump $(OUT)code32flat.o.objdump $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds
146 # These are actually built by tools/layoutrom.py above, but by pulling them
147 # into an extra rule we prevent make -j from spawning layoutrom.py 4 times.
148 $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)romlayout16.lds
150 $(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
152 $(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@
154 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
156 $(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@
158 $(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
160 $(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@
162 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
164 $(Q)$(OBJDUMP) -thr $< > $<.objdump
165 $(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
166 $(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
167 $(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
170 ################ VGA build rules
173 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
174 vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
176 $(OUT)vgaccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
178 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
179 @echo " Compiling (16bit) $@"
180 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
182 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
184 $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
186 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
187 @echo " Extracting binary $@"
188 $(Q)$(OBJCOPY) -O binary $< $@
190 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
191 @echo " Finalizing rom $@"
192 $(Q)./tools/buildrom.py $< $@
194 ####### dsdt build rules
196 @echo "Compiling DSDT"
197 $(Q)cpp -P $< > $(OUT)$*.dsl.i
198 $(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
199 $(Q)cp $(OUT)$*.hex $@
201 $(OUT)ccode32flat.o: src/acpi-dsdt.hex
203 ####### Kconfig rules
204 export HOSTCC := $(CC)
205 export CONFIG_SHELL := sh
206 export KCONFIG_AUTOHEADER := autoconf.h
207 export KCONFIG_CONFIG := $(CURDIR)/.config
209 $(OUT)autoconf.h : $(KCONFIG_CONFIG)
210 $(Q)$(MAKE) silentoldconfig
213 $(Q)$(MAKE) defconfig
216 $(Q)mkdir -p $(OUT)/tools/kconfig/lxdialog
217 $(Q)mkdir -p $(OUT)/include/config
218 $(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/tools/kconfig/Makefile srctree=$(CURDIR) src=tools/kconfig obj=tools/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $@
220 ####### Generic rules
225 $(Q)rm -f .config .config.old