-# Legacy Bios build system
+# SeaBIOS build system
#
-# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+# Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU LGPLv3 license.
# Source files
SRCBOTH=output.c util.c floppy.c ata.c misc.c mouse.c kbd.c pci.c \
- serial.c clock.c pic.c cdrom.c ps2port.c smpdetect.c resume.c \
+ serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
pnpbios.c pirtable.c
SRC16=$(SRCBOTH) system.c disk.c apm.c pcibios.c vgahooks.c font.c
SRC32=$(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
+ acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
+ lzmadecode.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 = -Wall -Os -MD -m32 -march=i386 -mregparm=3 \
-mpreferred-stack-boundary=2 -mrtd -freg-struct-return \
- -ffreestanding -fwhole-program -fomit-frame-pointer \
+ -ffreestanding -fomit-frame-pointer \
-fno-delete-null-pointer-checks -Wno-strict-aliasing \
+ -ffunction-sections -fdata-sections -fno-common \
-minline-all-stringops
COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
override CFLAGS = $(COMMONCFLAGS) -g -DMODE16=0
-CFLAGS16INC = $(COMMONCFLAGS) -DMODE16=1 -fno-jump-tables -fno-defer-pop \
+CFLAGS16INC = $(COMMONCFLAGS) -DMODE16=1 -fno-defer-pop \
+ $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
$(call cc-option,$(CC),-fno-tree-switch-conversion,) \
$(call cc-option,$(CC),--param large-stack-frame=4,)
-CFLAGS16INC += -ffunction-sections -fdata-sections
CFLAGS16 = $(CFLAGS16INC) -g
all: $(OUT) $(OUT)bios.bin
.PHONY : all FORCE
-vpath %.c src
-vpath %.S src
+vpath %.c src vgasrc
+vpath %.S src vgasrc
################ Build rules
+# Verify the gcc configuration and test if -fwhole-program works.
TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
ifeq "$(TESTGCC)" "-1"
$(error "Please upgrade GCC")
endif
-ifndef AVOIDCOMBINE
-AVOIDCOMBINE=$(TESTGCC)
+ifndef COMPSTRAT
+COMPSTRAT=$(TESTGCC)
endif
-# Do a whole file compile - two methods are supported. The first
-# involves including all the content textually via #include
-# directives. The second method uses gcc's "-combine" option.
-ifeq "$(AVOIDCOMBINE)" "1"
+# 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 -combine -c $2 -o $3
+$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
endef
endif
+endif
$(OUT)%.s: %.c
@echo " Linking (no relocs) $@"
$(Q)$(LD) -r -T $(OUT)rombios32.lds $< -o $@
-$(OUT)romlayout.lds: $(OUT)romlayout16.o
+$(OUT)romlayout16.lds $(OUT)romlayout32.lds: $(OUT)ccode32.o $(OUT)romlayout16.o
@echo " Building layout information $@"
- $(Q)$(OBJDUMP) -h $< | ./tools/layoutrom.py $@
+ $(Q)$(OBJDUMP) -thr $(OUT)ccode32.o > $(OUT)ccode32.o.objdump
+ $(Q)$(OBJDUMP) -thr $(OUT)romlayout16.o > $(OUT)romlayout16.o.objdump
+ $(Q)./tools/layoutrom.py $(OUT)romlayout16.o.objdump $(OUT)ccode32.o.objdump $(OUT)romlayout16.lds $(OUT)romlayout32.lds
-$(OUT)rombios16.lds: $(OUT)romlayout.lds
+$(OUT)layout16.lds: $(OUT)romlayout16.lds
+$(OUT)rombios32.lds: $(OUT)romlayout32.lds
-$(OUT)rom16.o: $(OUT)romlayout16.o $(OUT)rom32.o $(OUT)rombios16.lds
- @echo " Linking (16bit) $@"
- $(Q)$(OBJCOPY) --prefix-symbols=_code32_ $(OUT)rom32.o $(OUT)rom32.rename.o
- $(Q)$(LD) -T $(OUT)rombios16.lds -R $(OUT)rom32.rename.o $< -o $@
+$(OUT)rom16.o: $(OUT)romlayout16.o $(OUT)rom32.o $(OUT)layout16.lds
+ @echo " Linking (no relocs) $@"
+ $(Q)$(LD) -r -T $(OUT)layout16.lds $< -o $@
-$(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32.o $(OUT)rombios.lds
+$(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32.o $(OUT)rombios16.lds $(OUT)rombios.lds
@echo " Linking $@"
- $(Q)$(LD) -T $(OUT)rombios.lds $(OUT)rom16.o $(OUT)rom32.o -o $@
+ $(Q)$(LD) -T $(OUT)rombios16.lds $(OUT)rom16.o -R $(OUT)rom32.o -o $(OUT)rom16.reloc.o
+ $(Q)$(STRIP) $(OUT)rom16.reloc.o -o $(OUT)rom16.final.o
+ $(Q)$(OBJCOPY) --extract-symbol --adjust-vma 0xf0000 $(OUT)rom16.o $(OUT)rom16.moved.o
+ $(Q)$(LD) -T $(OUT)rombios.lds $(OUT)rom16.final.o $(OUT)rom32.o -R $(OUT)rom16.moved.o -o $@
$(OUT)bios.bin.elf: $(OUT)rom.o
@echo " Prepping $@"
$(Q)$(OBJCOPY) -O binary $< $@
+################ VGA build rules
+
+# VGA src files
+SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
+ vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
+
+$(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
+ @echo " Finalizing rom $@"
+ $(Q)./tools/buildrom.py $< $@
+
####### Generic rules
clean:
$(Q)rm -rf $(OUT)
projects / seabios.git / blobdiff