Makefile

   1 # SeaBIOS build system
   2 #
   3 # Copyright (C) 2008,2009  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-0.5.2-$(shell date +"%Y%m%d_%H%M%S")-$(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 iommu.c
  18 SRC16=$(SRCBOTH) system.c disk.c apm.c font.c
  19 SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
  20       acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
  21       lzmadecode.c usb-hub.c paravirt.c
  22 SRC32SEG=util.c output.c pci.c pcibios.c apm.c
  23
  24 cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
  25               /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
  26
  27 # Default compiler flags
  28 COMMONCFLAGS = -Os -MD -Wall -Wno-strict-aliasing -Wold-style-definition \
  29                $(call cc-option,$(CC),-Wtype-limits,) \
  30                -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
  31                -mrtd -minline-all-stringops \
  32                -freg-struct-return -ffreestanding -fomit-frame-pointer \
  33                -fno-delete-null-pointer-checks \
  34                -ffunction-sections -fdata-sections -fno-common
  35 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
  36 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
  37 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
  38
  39 CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
  40 CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
  41             $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
  42             $(call cc-option,$(CC),-fno-tree-switch-conversion,)
  43 CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
  44 CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
  45               $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
  46 CFLAGS16 = $(CFLAGS16INC) -g
  47
  48 all: $(OUT) $(OUT)bios.bin
  49
  50 # Run with "make V=1" to see the actual compile commands
  51 ifdef V
  52 Q=
  53 else
  54 Q=@
  55 endif
  56
  57 OBJCOPY=objcopy
  58 OBJDUMP=objdump
  59 STRIP=strip
  60
  61 .PHONY : all FORCE
  62
  63 vpath %.c src vgasrc
  64 vpath %.S src vgasrc
  65
  66 ################ Build rules
  67
  68 # Verify the gcc configuration and test if -fwhole-program works.
  69 TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
  70 ifeq "$(TESTGCC)" "-1"
  71 $(error "Please upgrade GCC")
  72 endif
  73
  74 ifndef COMPSTRAT
  75 COMPSTRAT=$(TESTGCC)
  76 endif
  77
  78 # Do a whole file compile - three methods are supported.
  79 ifeq "$(COMPSTRAT)" "1"
  80 # First method - use -fwhole-program without -combine.
  81 define whole-compile
  82 @echo "  Compiling whole program $3"
  83 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
  84 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
  85 endef
  86 else
  87 ifeq "$(COMPSTRAT)" "2"
  88 # Second menthod - don't use -fwhole-program at all.
  89 define whole-compile
  90 @echo "  Compiling whole program $3"
  91 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
  92 $(Q)$(CC) $1 -c $3.tmp.c -o $3
  93 endef
  94 else
  95 # Third (and preferred) method - use -fwhole-program with -combine
  96 define whole-compile
  97 @echo "  Compiling whole program $3"
  98 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
  99 endef
 100 endif
 101 endif
 102
 103
 104 $(OUT)%.s: %.c
 105         @echo "  Compiling to assembler $@"
 106         $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
 107
 108 $(OUT)%.lds: %.lds.S
 109         @echo "  Precompiling $@"
 110         $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
 111
 112 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
 113         @echo "  Generating offset file $@"
 114         $(Q)./tools/gen-offsets.sh $< $@
 115
 116
 117 $(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
 118
 119 $(OUT)code32seg.o: ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
 120
 121 $(OUT)ccode32flat.o: ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
 122
 123 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
 124         @echo "  Compiling (16bit) $@"
 125         $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
 126
 127 $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
 128         @echo "  Building ld scripts (version \"$(VERSION)\")"
 129         $(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
 130         $(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
 131         $(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
 132         $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
 133         $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
 134         $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
 135         $(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
 136
 137
 138 $(OUT)rom16.o: $(OUT)code16.o $(OUT)rom32flat.o $(OUT)romlayout16.lds
 139         @echo "  Linking (no relocs) $@"
 140         $(Q)$(LD) -r -T $(OUT)romlayout16.lds $< -o $@
 141
 142 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
 143         @echo "  Linking (no relocs) $@"
 144         $(Q)$(LD) -r -T $(OUT)romlayout32seg.lds $< -o $@
 145
 146 $(OUT)rom32flat.o: $(OUT)code32flat.o $(OUT)romlayout32flat.lds
 147         @echo "  Linking (no relocs) $@"
 148         $(Q)$(LD) -r -T $(OUT)romlayout32flat.lds $< -o $@
 149
 150 $(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32seg.o $(OUT)rom32flat.o $(OUT)rombios16.lds  $(OUT)rombios32seg.lds $(OUT)rombios.lds
 151         @echo "  Linking $@"
 152         $(Q)$(LD) -T $(OUT)rombios16.lds $(OUT)rom16.o -R $(OUT)rom32seg.o -R $(OUT)rom32flat.o -o $(OUT)rom16.reloc.o
 153         $(Q)$(STRIP) $(OUT)rom16.reloc.o -o $(OUT)rom16.final.o
 154         $(Q)$(OBJCOPY) --adjust-vma 0xf0000 $(OUT)rom16.o $(OUT)rom16.moved.o
 155         $(Q)$(LD) -T $(OUT)rombios32seg.lds $(OUT)rom32seg.o -R $(OUT)rom16.o -R $(OUT)rom32flat.o -o $(OUT)rom32seg.reloc.o
 156         $(Q)$(STRIP) $(OUT)rom32seg.reloc.o -o $(OUT)rom32seg.final.o
 157         $(Q)$(OBJCOPY) --adjust-vma 0xf0000 $(OUT)rom32seg.o $(OUT)rom32seg.moved.o
 158         $(Q)$(LD) -T $(OUT)rombios.lds $(OUT)rom16.final.o $(OUT)rom32seg.final.o $(OUT)rom32flat.o -R $(OUT)rom16.moved.o -R $(OUT)rom32seg.moved.o -o $@
 159
 160 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
 161         @echo "  Prepping $@"
 162         $(Q)$(OBJDUMP) -thr $< > $<.objdump
 163         $(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
 164         $(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
 165         $(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
 166
 167
 168 ################ VGA build rules
 169
 170 # VGA src files
 171 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
 172        vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
 173
 174 $(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
 175
 176 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
 177         @echo "  Compiling (16bit) $@"
 178         $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
 179
 180 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
 181         @echo "  Linking $@"
 182         $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
 183
 184 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
 185         @echo "  Extracting binary $@"
 186         $(Q)$(OBJCOPY) -O binary $< $@
 187
 188 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
 189         @echo "  Finalizing rom $@"
 190         $(Q)./tools/buildrom.py $< $@
 191
 192 ####### dsdt build rules
 193 src/acpi-dsdt.hex: src/acpi-dsdt.dsl
 194         @echo "Compiling DSDT"
 195         $(Q)cpp -P $< > $(OUT)acpi-dsdt.dsl.i
 196         $(Q)iasl -tc -p $@ $(OUT)acpi-dsdt.dsl.i
 197         $(Q)rm $(OUT)acpi-dsdt.dsl.i
 198
 199 ####### Generic rules
 200 clean:
 201         $(Q)rm -rf $(OUT)
 202
 203 $(OUT):
 204         $(Q)mkdir $@
 205
 206 -include $(OUT)*.d