Makefile

   1 # SeaBIOS build system
   2 #
   3 # Copyright (C) 2008-2010  Kevin O'Connor <kevin@koconnor.net>
   4 #
   5 # This file may be distributed under the terms of the GNU LGPLv3 license.
   6
   7 # Program version
   8 VERSION=pre-0.6.2-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)
   9
  10 # Output directory
  11 OUT=out/
  12
  13 # Source files
  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 \
  23       pci_region.c
  24 SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c
  25
  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 ;)
  28
  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,)
  40
  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
  49
  50 all: $(OUT) $(OUT)bios.bin
  51
  52 # Run with "make V=1" to see the actual compile commands
  53 ifdef V
  54 Q=
  55 else
  56 Q=@
  57 endif
  58
  59 OBJCOPY=objcopy
  60 OBJDUMP=objdump
  61 STRIP=strip
  62
  63 .PHONY : all FORCE
  64
  65 vpath %.c src vgasrc
  66 vpath %.S src vgasrc
  67
  68 ################ Build rules
  69
  70 # Verify the gcc configuration and test if -fwhole-program works.
  71 TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
  72 ifeq "$(TESTGCC)" "-1"
  73 $(error "Please upgrade GCC")
  74 endif
  75
  76 ifndef COMPSTRAT
  77 COMPSTRAT=$(TESTGCC)
  78 endif
  79
  80 # Do a whole file compile - three methods are supported.
  81 ifeq "$(COMPSTRAT)" "1"
  82 # First method - use -fwhole-program without -combine.
  83 define whole-compile
  84 @echo "  Compiling whole program $3"
  85 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
  86 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
  87 endef
  88 else
  89 ifeq "$(COMPSTRAT)" "2"
  90 # Second menthod - don't use -fwhole-program at all.
  91 define whole-compile
  92 @echo "  Compiling whole program $3"
  93 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
  94 $(Q)$(CC) $1 -c $3.tmp.c -o $3
  95 endef
  96 else
  97 # Third (and preferred) method - use -fwhole-program with -combine
  98 define whole-compile
  99 @echo "  Compiling whole program $3"
 100 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
 101 endef
 102 endif
 103 endif
 104
 105 %.strip.o: %.o
 106         @echo "  Stripping $@"
 107         $(Q)$(STRIP) $< -o $@
 108
 109 $(OUT)%.s: %.c
 110         @echo "  Compiling to assembler $@"
 111         $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
 112
 113 $(OUT)%.lds: %.lds.S
 114         @echo "  Precompiling $@"
 115         $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
 116
 117 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
 118         @echo "  Generating offset file $@"
 119         $(Q)./tools/gen-offsets.sh $< $@
 120
 121
 122 $(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
 123
 124 $(OUT)code32seg.o: ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
 125
 126 $(OUT)ccode32flat.o: ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
 127
 128 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
 129         @echo "  Compiling (16bit) $@"
 130         $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
 131
 132 $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
 133         @echo "  Building ld scripts (version \"$(VERSION)\")"
 134         $(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
 135         $(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
 136         $(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
 137         $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
 138         $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
 139         $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
 140         $(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
 141
 142
 143 $(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
 144         @echo "  Linking $@"
 145         $(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@
 146
 147 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
 148         @echo "  Linking $@"
 149         $(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@
 150
 151 $(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
 152         @echo "  Linking $@"
 153         $(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@
 154
 155 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
 156         @echo "  Prepping $@"
 157         $(Q)$(OBJDUMP) -thr $< > $<.objdump
 158         $(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
 159         $(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
 160         $(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
 161
 162
 163 ################ VGA build rules
 164
 165 # VGA src files
 166 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
 167        vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
 168
 169 $(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
 170
 171 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
 172         @echo "  Compiling (16bit) $@"
 173         $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
 174
 175 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
 176         @echo "  Linking $@"
 177         $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
 178
 179 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
 180         @echo "  Extracting binary $@"
 181         $(Q)$(OBJCOPY) -O binary $< $@
 182
 183 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
 184         @echo "  Finalizing rom $@"
 185         $(Q)./tools/buildrom.py $< $@
 186
 187 ####### dsdt build rules
 188 src/%.hex: src/%.dsl
 189         @echo "Compiling DSDT"
 190         $(Q)cpp -P $< > $(OUT)$*.dsl.i
 191         $(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
 192         $(Q)cp $(OUT)$*.hex $@
 193
 194 $(OUT)ccode32flat.o: src/acpi-dsdt.hex
 195
 196 ####### Generic rules
 197 clean:
 198         $(Q)rm -rf $(OUT)
 199
 200 $(OUT):
 201         $(Q)mkdir $@
 202
 203 -include $(OUT)*.d