3 # Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
5 # This file may be distributed under the terms of the GNU LGPLv3 license.
8 VERSION=pre-0.6.1-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)
14 SRCBOTH=misc.c pmm.c stacks.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
19 SRC16=$(SRCBOTH) system.c disk.c apm.c font.c
20 SRC32FLAT=$(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 SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c
25 cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
26 /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
28 # Default compiler flags
29 COMMONCFLAGS = -Os -MD -Wall -Wno-strict-aliasing -Wold-style-definition \
30 $(call cc-option,$(CC),-Wtype-limits,) \
31 -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
32 -mrtd -minline-all-stringops \
33 -freg-struct-return -ffreestanding -fomit-frame-pointer \
34 -fno-delete-null-pointer-checks \
35 -ffunction-sections -fdata-sections -fno-common
36 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
37 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
38 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
40 CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
41 CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
42 $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
43 $(call cc-option,$(CC),-fno-tree-switch-conversion,)
44 CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
45 CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
46 $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
47 CFLAGS16 = $(CFLAGS16INC) -g
49 all: $(OUT) $(OUT)bios.bin
51 # Run with "make V=1" to see the actual compile commands
67 ################ Build rules
69 # Verify the gcc configuration and test if -fwhole-program works.
70 TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
71 ifeq "$(TESTGCC)" "-1"
72 $(error "Please upgrade GCC")
79 # Do a whole file compile - three methods are supported.
80 ifeq "$(COMPSTRAT)" "1"
81 # First method - use -fwhole-program without -combine.
83 @echo " Compiling whole program $3"
84 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
85 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
88 ifeq "$(COMPSTRAT)" "2"
89 # Second menthod - don't use -fwhole-program at all.
91 @echo " Compiling whole program $3"
92 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
93 $(Q)$(CC) $1 -c $3.tmp.c -o $3
96 # Third (and preferred) method - use -fwhole-program with -combine
98 @echo " Compiling whole program $3"
99 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
105 @echo " Stripping $@"
106 $(Q)$(STRIP) $< -o $@
109 @echo " Compiling to assembler $@"
110 $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
113 @echo " Precompiling $@"
114 $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
116 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
117 @echo " Generating offset file $@"
118 $(Q)./tools/gen-offsets.sh $< $@
121 $(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
123 $(OUT)code32seg.o: ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
125 $(OUT)ccode32flat.o: ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
127 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
128 @echo " Compiling (16bit) $@"
129 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
131 $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
132 @echo " Building ld scripts (version \"$(VERSION)\")"
133 $(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
134 $(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
135 $(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
136 $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
137 $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
138 $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
139 $(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
142 $(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
144 $(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@
146 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
148 $(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@
150 $(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
152 $(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@
154 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
156 $(Q)$(OBJDUMP) -thr $< > $<.objdump
157 $(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
158 $(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
159 $(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
162 ################ VGA build rules
165 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
166 vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
168 $(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
170 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
171 @echo " Compiling (16bit) $@"
172 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
174 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
176 $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
178 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
179 @echo " Extracting binary $@"
180 $(Q)$(OBJCOPY) -O binary $< $@
182 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
183 @echo " Finalizing rom $@"
184 $(Q)./tools/buildrom.py $< $@
186 ####### dsdt build rules
188 @echo "Compiling DSDT"
189 $(Q)cpp -P $< > $(OUT)$*.dsl.i
190 $(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
191 $(Q)cp $(OUT)$*.hex $@
193 $(OUT)ccode32flat.o: src/acpi-dsdt.hex
195 ####### Generic rules