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# SeaBIOS build system
#
# Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU LGPLv3 license.
# Program version
VERSION=pre-0.5.1-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)
# Output directory
OUT=out/
# Source files
SRCBOTH=misc.c pmm.c stacks.c output.c util.c block.c floppy.c ata.c mouse.c \
kbd.c pci.c serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c \
usb.c usb-uhci.c usb-ohci.c usb-hid.c paravirt.c
SRC16=$(SRCBOTH) system.c disk.c apm.c font.c
SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
lzmadecode.c
SRC32SEG=util.c output.c pci.c pcibios.c apm.c
cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
/dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
# Default compiler flags
COMMONCFLAGS = -Os -MD -Wall -Wold-style-definition -Wno-strict-aliasing \
-m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
-mrtd -minline-all-stringops \
-freg-struct-return -ffreestanding -fomit-frame-pointer \
-fno-delete-null-pointer-checks \
-ffunction-sections -fdata-sections -fno-common
COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
$(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
$(call cc-option,$(CC),-fno-tree-switch-conversion,)
CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
$(call cc-option,$(CC),--param large-stack-frame=4,)
CFLAGS16 = $(CFLAGS16INC) -g
all: $(OUT) $(OUT)bios.bin
# Run with "make V=1" to see the actual compile commands
ifdef V
Q=
else
Q=@
endif
OBJCOPY=objcopy
OBJDUMP=objdump
STRIP=strip
.PHONY : all FORCE
vpath %.c src vgasrc
vpath %.S src vgasrc
################ Build rules
# Verify the gcc configuration and test if -fwhole-program works.
TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
ifeq "$(TESTGCC)" "-1"
$(error "Please upgrade GCC")
endif
ifndef COMPSTRAT
COMPSTRAT=$(TESTGCC)
endif
# Do a whole file compile - three methods are supported.
ifeq "$(COMPSTRAT)" "1"
# First method - use -fwhole-program without -combine.
define whole-compile
@echo " Compiling whole program $3"
$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
endef
else
ifeq "$(COMPSTRAT)" "2"
# Second menthod - don't use -fwhole-program at all.
define whole-compile
@echo " Compiling whole program $3"
$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
$(Q)$(CC) $1 -c $3.tmp.c -o $3
endef
else
# Third (and preferred) method - use -fwhole-program with -combine
define whole-compile
@echo " Compiling whole program $3"
$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
endef
endif
endif
$(OUT)%.s: %.c
@echo " Compiling to assembler $@"
$(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
$(OUT)%.lds: %.lds.S
@echo " Precompiling $@"
$(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
$(OUT)asm-offsets.h: $(OUT)asm-offsets.s
@echo " Generating offset file $@"
$(Q)./tools/gen-offsets.sh $< $@
$(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
$(OUT)code32seg.o: ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)
$(OUT)ccode32flat.o: ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)
$(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
@echo " Compiling (16bit) $@"
$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
$(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
@echo " Building ld scripts (version \"$(VERSION)\")"
$(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
$(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
$(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
$(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
$(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
$(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
$(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
$(OUT)rom16.o: $(OUT)code16.o $(OUT)rom32flat.o $(OUT)romlayout16.lds
@echo " Linking (no relocs) $@"
$(Q)$(LD) -r -T $(OUT)romlayout16.lds $< -o $@
$(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
@echo " Linking (no relocs) $@"
$(Q)$(LD) -r -T $(OUT)romlayout32seg.lds $< -o $@
$(OUT)rom32flat.o: $(OUT)code32flat.o $(OUT)romlayout32flat.lds
@echo " Linking (no relocs) $@"
$(Q)$(LD) -r -T $(OUT)romlayout32flat.lds $< -o $@
$(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32seg.o $(OUT)rom32flat.o $(OUT)rombios16.lds $(OUT)rombios32seg.lds $(OUT)rombios.lds
@echo " Linking $@"
$(Q)$(LD) -T $(OUT)rombios16.lds $(OUT)rom16.o -R $(OUT)rom32seg.o -R $(OUT)rom32flat.o -o $(OUT)rom16.reloc.o
$(Q)$(STRIP) $(OUT)rom16.reloc.o -o $(OUT)rom16.final.o
$(Q)$(OBJCOPY) --adjust-vma 0xf0000 $(OUT)rom16.o $(OUT)rom16.moved.o
$(Q)$(LD) -T $(OUT)rombios32seg.lds $(OUT)rom32seg.o -R $(OUT)rom16.o -R $(OUT)rom32flat.o -o $(OUT)rom32seg.reloc.o
$(Q)$(STRIP) $(OUT)rom32seg.reloc.o -o $(OUT)rom32seg.final.o
$(Q)$(OBJCOPY) --adjust-vma 0xf0000 $(OUT)rom32seg.o $(OUT)rom32seg.moved.o
$(Q)$(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 $@
$(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
@echo " Prepping $@"
$(Q)$(OBJDUMP) -thr $< > $<.objdump
$(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
$(Q)./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
$(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf
################ VGA build rules
# VGA src files
SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
$(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
$(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
@echo " Compiling (16bit) $@"
$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
$(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
@echo " Linking $@"
$(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
$(OUT)vgabios.bin.raw: $(OUT)vgarom.o
@echo " Extracting binary $@"
$(Q)$(OBJCOPY) -O binary $< $@
$(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
@echo " Finalizing rom $@"
$(Q)./tools/buildrom.py $< $@
####### dsdt build rules
src/acpi-dsdt.hex: src/acpi-dsdt.dsl
@echo "Compiling DSDT"
$(Q)cpp -P $< > $(OUT)acpi-dsdt.dsl.i
$(Q)iasl -tc -p $@ $(OUT)acpi-dsdt.dsl.i
$(Q)rm $(OUT)acpi-dsdt.dsl.i
####### Generic rules
clean:
$(Q)rm -rf $(OUT)
$(OUT):
$(Q)mkdir $@
-include $(OUT)*.d