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=pre-0.6.2-$(shell date +"%Y%m%d_%H%M%S")-$(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 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 dev-i440fx.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 = -Os -MD -Wall -Wno-strict-aliasing -Wold-style-definition \
31 $(call cc-option,$(CC),-Wtype-limits,) \
32 -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
33 -mrtd -minline-all-stringops \
34 -freg-struct-return -ffreestanding -fomit-frame-pointer \
35 -fno-delete-null-pointer-checks \
36 -ffunction-sections -fdata-sections -fno-common
37 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
38 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
39 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
41 CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
42 CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
43 $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
44 $(call cc-option,$(CC),-fno-tree-switch-conversion,)
45 CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
46 CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
47 $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
48 CFLAGS16 = $(CFLAGS16INC) -g
50 all: $(OUT) $(OUT)bios.bin
52 # Run with "make V=1" to see the actual compile commands
57 MAKEFLAGS += --no-print-directory
64 .PHONY : all clean distclean FORCE
69 ################ Build rules
71 # Verify the gcc configuration and test if -fwhole-program works.
72 TESTGCC:=$(shell CC="$(CC)" tools/test-gcc.sh)
73 ifeq "$(TESTGCC)" "-1"
74 $(error "Please upgrade GCC")
81 # Do a whole file compile - three methods are supported.
82 ifeq "$(COMPSTRAT)" "1"
83 # First method - use -fwhole-program without -combine.
85 @echo " Compiling whole program $3"
86 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
87 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
90 ifeq "$(COMPSTRAT)" "2"
91 # Second menthod - don't use -fwhole-program at all.
93 @echo " Compiling whole program $3"
94 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
95 $(Q)$(CC) $1 -c $3.tmp.c -o $3
98 # Third (and preferred) method - use -fwhole-program with -combine
100 @echo " Compiling whole program $3"
101 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
107 @echo " Stripping $@"
108 $(Q)$(STRIP) $< -o $@
111 @echo " Compiling to assembler $@"
112 $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
115 @echo " Precompiling $@"
116 $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
118 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
119 @echo " Generating offset file $@"
120 $(Q)./tools/gen-offsets.sh $< $@
123 $(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
125 $(OUT)code32seg.o: ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
127 $(OUT)ccode32flat.o: ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
129 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
130 @echo " Compiling (16bit) $@"
131 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
133 $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
134 @echo " Building ld scripts (version \"$(VERSION)\")"
135 $(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
136 $(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
137 $(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
138 $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
139 $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
140 $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
141 $(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
144 $(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
146 $(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@
148 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
150 $(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@
152 $(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
154 $(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@
156 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
158 $(Q)$(OBJDUMP) -thr $< > $<.objdump
159 $(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
160 $(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
161 $(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
164 ################ VGA build rules
167 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
168 vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
170 $(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
172 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
173 @echo " Compiling (16bit) $@"
174 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
176 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
178 $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
180 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
181 @echo " Extracting binary $@"
182 $(Q)$(OBJCOPY) -O binary $< $@
184 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
185 @echo " Finalizing rom $@"
186 $(Q)./tools/buildrom.py $< $@
188 ####### dsdt build rules
190 @echo "Compiling DSDT"
191 $(Q)cpp -P $< > $(OUT)$*.dsl.i
192 $(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
193 $(Q)cp $(OUT)$*.hex $@
195 $(OUT)ccode32flat.o: src/acpi-dsdt.hex
197 ####### Kconfig rules
198 export HOSTCC := $(CC)
199 export CONFIG_SHELL := sh
200 export KCONFIG_AUTOHEADER := autoconf.h
201 export KCONFIG_CONFIG := $(CURDIR)/.config
204 $(Q)mkdir -p $(OUT)/tools/kconfig/lxdialog
205 $(Q)mkdir -p $(OUT)/include/config
206 $(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/tools/kconfig/Makefile srctree=$(CURDIR) src=tools/kconfig obj=tools/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $@
208 ####### Generic rules
213 $(Q)rm -f .config .config.old