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Kevin O'Connor14458432009-05-23 18:21:18 -04001# SeaBIOS build system
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05002#
Kevin O'Connor14458432009-05-23 18:21:18 -04003# Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05004#
Kevin O'Connorb1b7c2a2009-01-15 20:52:58 -05005# This file may be distributed under the terms of the GNU LGPLv3 license.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05006
Kevin O'Connorc95d2ce2009-07-29 20:41:39 -04007# Program version
Kevin O'Connor56629e72009-09-08 20:20:04 -04008VERSION=0.4.2-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)
Kevin O'Connorc95d2ce2009-07-29 20:41:39 -04009
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050010# Output directory
11OUT=out/
12
13# Source files
Kevin O'Connorc892b132009-08-11 21:59:37 -040014SRCBOTH=output.c util.c block.c floppy.c ata.c misc.c mouse.c kbd.c pci.c \
Kevin O'Connore97ca7b2009-06-21 09:10:28 -040015 serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
Kevin O'Connora3855ad2009-08-16 21:59:40 -040016 pnpbios.c pirtable.c vgahooks.c pmm.c ramdisk.c
Kevin O'Connor22e1b912009-07-19 18:52:46 -040017SRC16=$(SRCBOTH) system.c disk.c apm.c pcibios.c font.c
Kevin O'Connor9f4e1d92009-02-08 15:44:08 -050018SRC32=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
Kevin O'Connor592323f2009-04-26 23:17:49 -040019 acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
20 lzmadecode.c
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050021
Kevin O'Connor786502d2008-02-27 10:41:41 -050022cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
23 /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
24
Kevin O'Connorbdce35f2008-02-26 21:33:14 -050025# Default compiler flags
Kevin O'Connorba2d0df2008-04-13 16:59:03 -040026COMMONCFLAGS = -Wall -Os -MD -m32 -march=i386 -mregparm=3 \
Kevin O'Connor03f630e2009-03-26 20:45:36 -040027 -mpreferred-stack-boundary=2 -mrtd -freg-struct-return \
Kevin O'Connor942d4952009-06-10 22:44:06 -040028 -ffreestanding -fomit-frame-pointer \
Kevin O'Connord9441142009-04-19 23:18:54 -040029 -fno-delete-null-pointer-checks -Wno-strict-aliasing \
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040030 -ffunction-sections -fdata-sections -fno-common \
Kevin O'Connord9441142009-04-19 23:18:54 -040031 -minline-all-stringops
Kevin O'Connor786502d2008-02-27 10:41:41 -050032COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
33COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
34COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)
35
Kevin O'Connorc43bcba2008-07-30 20:37:13 -040036override CFLAGS = $(COMMONCFLAGS) -g -DMODE16=0
Kevin O'Connor942d4952009-06-10 22:44:06 -040037CFLAGS16INC = $(COMMONCFLAGS) -DMODE16=1 -fno-defer-pop \
38 $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
Kevin O'Connorb49e0582009-04-08 21:25:00 -040039 $(call cc-option,$(CC),-fno-tree-switch-conversion,) \
Kevin O'Connor96462242009-01-01 17:54:16 -050040 $(call cc-option,$(CC),--param large-stack-frame=4,)
Kevin O'Connor410680b2008-03-02 20:48:35 -050041CFLAGS16 = $(CFLAGS16INC) -g
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050042
Kevin O'Connor30853762009-01-17 18:49:20 -050043all: $(OUT) $(OUT)bios.bin
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050044
45# Run with "make V=1" to see the actual compile commands
46ifdef V
47Q=
48else
49Q=@
50endif
51
Kevin O'Connor2fc90bd2008-11-07 21:42:00 -050052OBJCOPY=objcopy
Kevin O'Connor202024a2009-01-17 10:41:28 -050053OBJDUMP=objdump
Kevin O'Connor2fc90bd2008-11-07 21:42:00 -050054NM=nm
55STRIP=strip
56
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050057.PHONY : all FORCE
58
Kevin O'Connor1f2c3072009-05-06 23:35:59 -040059vpath %.c src vgasrc
60vpath %.S src vgasrc
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050061
62################ Build rules
Kevin O'Connor410680b2008-03-02 20:48:35 -050063
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040064# Verify the gcc configuration and test if -fwhole-program works.
Kevin O'Connor03f630e2009-03-26 20:45:36 -040065TESTGCC:=$(shell CC=$(CC) tools/test-gcc.sh)
66ifeq "$(TESTGCC)" "-1"
67$(error "Please upgrade GCC")
68endif
69
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040070ifndef COMPSTRAT
71COMPSTRAT=$(TESTGCC)
Kevin O'Connor231f7102009-01-25 16:11:27 -050072endif
73
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040074# Do a whole file compile - three methods are supported.
75ifeq "$(COMPSTRAT)" "1"
76# First method - use -fwhole-program without -combine.
77define whole-compile
78@echo " Compiling whole program $3"
79$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
80$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
81endef
Kevin O'Connord82a1ca2009-06-17 20:33:41 -040082else
83ifeq "$(COMPSTRAT)" "2"
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040084# Second menthod - don't use -fwhole-program at all.
Kevin O'Connor410680b2008-03-02 20:48:35 -050085define whole-compile
86@echo " Compiling whole program $3"
Kevin O'Connor86cebee2008-11-06 18:57:10 -050087$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
Kevin O'Connor410680b2008-03-02 20:48:35 -050088$(Q)$(CC) $1 -c $3.tmp.c -o $3
89endef
90else
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040091# Third (and preferred) method - use -fwhole-program with -combine
Kevin O'Connor410680b2008-03-02 20:48:35 -050092define whole-compile
93@echo " Compiling whole program $3"
Kevin O'Connor0942e7f2009-06-15 22:27:01 -040094$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
Kevin O'Connor410680b2008-03-02 20:48:35 -050095endef
96endif
Kevin O'Connord82a1ca2009-06-17 20:33:41 -040097endif
Kevin O'Connor410680b2008-03-02 20:48:35 -050098
99
Kevin O'Connor30853762009-01-17 18:49:20 -0500100$(OUT)%.s: %.c
Kevin O'Connor9e821222008-12-06 18:56:19 -0500101 @echo " Compiling to assembler $@"
Kevin O'Connor30853762009-01-17 18:49:20 -0500102 $(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500103
104$(OUT)%.lds: %.lds.S
Kevin O'Connor9e821222008-12-06 18:56:19 -0500105 @echo " Precompiling $@"
Kevin O'Connord9a8b2d2008-11-16 09:17:02 -0500106 $(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500107
Kevin O'Connor30853762009-01-17 18:49:20 -0500108$(OUT)asm-offsets.h: $(OUT)asm-offsets.s
Kevin O'Connor952974e2008-11-16 18:14:33 -0500109 @echo " Generating offset file $@"
110 $(Q)./tools/gen-offsets.sh $< $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500111
Kevin O'Connore6caca82009-07-13 20:31:35 -0400112
Kevin O'Connor9e821222008-12-06 18:56:19 -0500113$(OUT)ccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500114
Kevin O'Connore6caca82009-07-13 20:31:35 -0400115$(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
Kevin O'Connor9e821222008-12-06 18:56:19 -0500116 @echo " Compiling (16bit) $@"
117 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500118
Kevin O'Connore6caca82009-07-13 20:31:35 -0400119$(OUT)code32.o: ; $(call whole-compile, $(CFLAGS), $(addprefix src/, $(SRC32)),$@)
Kevin O'Connor2fda7cb2008-07-05 20:41:53 -0400120
Kevin O'Connore6caca82009-07-13 20:31:35 -0400121$(OUT)romlayout16.lds $(OUT)romlayout32.lds: $(OUT)code32.o $(OUT)code16.o
Kevin O'Connor202024a2009-01-17 10:41:28 -0500122 @echo " Building layout information $@"
Kevin O'Connore6caca82009-07-13 20:31:35 -0400123 $(Q)$(OBJDUMP) -thr $(OUT)code32.o > $(OUT)code32.o.objdump
124 $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
125 $(Q)./tools/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32.o.objdump $(OUT)romlayout16.lds $(OUT)romlayout32.lds
Kevin O'Connor202024a2009-01-17 10:41:28 -0500126
Kevin O'Connorc0693942009-06-10 21:56:01 -0400127$(OUT)layout16.lds: $(OUT)romlayout16.lds
128$(OUT)rombios32.lds: $(OUT)romlayout32.lds
Kevin O'Connor202024a2009-01-17 10:41:28 -0500129
Kevin O'Connore6caca82009-07-13 20:31:35 -0400130
131$(OUT)rom16.o: $(OUT)code16.o $(OUT)rom32.o $(OUT)layout16.lds
Kevin O'Connor14458432009-05-23 18:21:18 -0400132 @echo " Linking (no relocs) $@"
133 $(Q)$(LD) -r -T $(OUT)layout16.lds $< -o $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500134
Kevin O'Connore6caca82009-07-13 20:31:35 -0400135$(OUT)rom32.o: $(OUT)code32.o $(OUT)rombios32.lds
136 @echo " Linking (no relocs) $@"
137 $(Q)$(LD) -r -T $(OUT)rombios32.lds $< -o $@
138
Kevin O'Connor14458432009-05-23 18:21:18 -0400139$(OUT)rom.o: $(OUT)rom16.o $(OUT)rom32.o $(OUT)rombios16.lds $(OUT)rombios.lds
Kevin O'Connorc95d2ce2009-07-29 20:41:39 -0400140 @echo " Linking $@ (version \"$(VERSION)\")"
141 $(Q)echo 'const char VERSION[] __attribute__((section(".data32.version"))) = "$(VERSION)";' > $(OUT)version.c
142 $(Q)$(CC) $(CFLAGS) -c $(OUT)version.c -o $(OUT)version.o
Kevin O'Connor7173f6f2009-05-27 22:23:33 -0400143 $(Q)$(LD) -T $(OUT)rombios16.lds $(OUT)rom16.o -R $(OUT)rom32.o -o $(OUT)rom16.reloc.o
144 $(Q)$(STRIP) $(OUT)rom16.reloc.o -o $(OUT)rom16.final.o
Kevin O'Connor5c3f5dd2009-06-22 20:05:56 -0400145 $(Q)$(OBJCOPY) --adjust-vma 0xf0000 $(OUT)rom16.o $(OUT)rom16.moved.o
Kevin O'Connorc95d2ce2009-07-29 20:41:39 -0400146 $(Q)$(LD) -T $(OUT)rombios.lds $(OUT)rom16.final.o $(OUT)rom32.o $(OUT)version.o -R $(OUT)rom16.moved.o -o $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500147
Kevin O'Connord2899772008-07-06 09:56:14 -0400148$(OUT)bios.bin.elf: $(OUT)rom.o
Kevin O'Connor9bcc5272008-07-05 21:08:56 -0400149 @echo " Prepping $@"
Kevin O'Connor86cebee2008-11-06 18:57:10 -0500150 $(Q)$(NM) $< | ./tools/checkrom.py
151 $(Q)$(STRIP) $< -o $@
Kevin O'Connor2fda7cb2008-07-05 20:41:53 -0400152
153$(OUT)bios.bin: $(OUT)bios.bin.elf
154 @echo " Extracting binary $@"
Kevin O'Connor86cebee2008-11-06 18:57:10 -0500155 $(Q)$(OBJCOPY) -O binary $< $@
Kevin O'Connor2fda7cb2008-07-05 20:41:53 -0400156
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500157
Kevin O'Connor1f2c3072009-05-06 23:35:59 -0400158################ VGA build rules
159
160# VGA src files
Kevin O'Connor8d8e0942009-05-17 21:14:46 -0400161SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
162 vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c
Kevin O'Connor1f2c3072009-05-06 23:35:59 -0400163
164$(OUT)vgaccode.16.s: ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)
165
166$(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
167 @echo " Compiling (16bit) $@"
168 $(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@
169
170$(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
171 @echo " Linking $@"
Kevin O'Connorc0693942009-06-10 21:56:01 -0400172 $(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@
Kevin O'Connor1f2c3072009-05-06 23:35:59 -0400173
174$(OUT)vgabios.bin.raw: $(OUT)vgarom.o
175 @echo " Extracting binary $@"
176 $(Q)$(OBJCOPY) -O binary $< $@
177
178$(OUT)vgabios.bin: $(OUT)vgabios.bin.raw
179 @echo " Finalizing rom $@"
180 $(Q)./tools/buildrom.py $< $@
181
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500182####### Generic rules
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500183clean:
Kevin O'Connor86cebee2008-11-06 18:57:10 -0500184 $(Q)rm -rf $(OUT)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500185
186$(OUT):
Kevin O'Connor86cebee2008-11-06 18:57:10 -0500187 $(Q)mkdir $@
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500188
189-include $(OUT)*.d