## Process this file with automake to produce Makefile.in
# $Id: Makefile.am,v 1.36 2009-07-29 07:30:06 vrsieh Exp $
#
# Copyright (C) 2004-2009 FAUmachine Team <info@faumachine.org>.
#
# This program is free software. You can redistribute it and/or modify it
# under the terms of the GNU General Public License, either version 2 of
# the License, or (at your option) any later version. See COPYING.


CONFIG = -DCONFIG_80286_SUPPORT

IASL=@IASL@
INCLUDE = -I. -I../bios -I.. -I../..
CFLAGS = $(filter-out -g, $(filter-out -finline-limit-100000, $(filter-out -O2,@CFLAGS@))) -Os -fomit-frame-pointer -mpreferred-stack-boundary=2 --freestanding -falign-functions=15 $(INCLUDE)
CCASFLAGS = $(CONFIG)

if HOST_X86_64
CCASFLAGS += -m32
CFLAGS += -m32
endif

MAPFILE = bios.gcc.map
LINK_SCRIPT = bios.lds.in

# little trick to compile & assemble with gcc.pl
CC = ./gcc.pl "@FAUCC@ -b i286 -f sizeof_int=2 -f sizeof_pointer=4"
CCAS = ./gcc.pl "@CCAS@"

ASMBAK_EXT = .s_orig
ASMPATCH_EXT = .s_patch

xpm2logo=${top_builddir}/scripts/xpm2logo
bin2bios=${top_builddir}/scripts/bin2bios
splitbios=${top_builddir}/scripts/splitbios
libfaucc= @LIBFAUCC@
LDSCRIPT_PATCHER = ./ldscript_patcher.pl
###PREASM_PATCHER = ./preasm_patcher.pl 
###PREASM_PROC = ./preasm_proc.pl

init_rm_flags = -DINIT_RM -DCONFIG_80286_SUPPORT --sec-prefix=.init.rm
rt_pm_flags = -DRUNTIME_PM -DCONFIG_80286_SUPPORT --sec-prefix=.rt.pm_legacy 
rt_rm_flags = -DRUNTIME_RM -DCONFIG_80286_SUPPORT --sec-prefix=.rt.rm_legacy 

bios_clfags = -I${top_srcdir} --freestanding
bios_casflags = -D__ASSEMBLY__ -I${top_srcdir}

if BUILD_BIOS

rom_DATA = \
	mb_ibm_at_bios.rom-0 \
	mb_ibm_at_bios.rom-1 \
	mb_ibm_at_bios.rom-2 \
	mb_ibm_at_bios.rom-3
noinst_PROGRAMS = bios.elf1
noinst_DATA = bios.elf bios.dis16 bios.dis32

# C sources for realmode part
C_sources = ../bios/main.c ../bios/disk.c ../bios/kbd.c ../bios/mem.c ../bios/traps.c ../bios/video.c \
		../bios/boot.c setup.c ../bios/serial.c \
		../bios/parallel.c ../bios/shutcode.c ../bios/hwconfig.c ../bios/in.c ../bios/assert.c \
		../bios/print.c ../bios/vsprintf.c ../bios/debug.c ../bios/main_init.c \
		../bios/fixme.c ../bios/chipset.c ../bios/cmos.c

# Assembler sources for gas
gas_sources = ../bios/head.S ../bios/post.S ../bios/entry.S ../bios/rtc.S \
		../bios/early_init.S ../bios/memcpy.S

all_sources = $(gas_sources) $(C_sources)
all_modules = $(gas_sources:.S=) $(C_sources:.c=)

CLEANFILES = \
	$(rom_DATA) \
	$(noinst_DATA) \
	logo.h \
	$(MAPFILE) \
	faum-dsdt.h \
	$(LINK_SCRIPT:.in=) \
	mb_ibm_at_bios.rom
	
BUILT_SOURCES = logo.h faum-dsdt.h
noinst_LIBRARIES = libinit_rm.a librt_pm.a librt_rm.a

libinit_rm_a_SOURCES = $(all_sources)
libinit_rm_a_CFLAGS = $(init_rm_flags) $(bios_clfags) 
libinit_rm_a_CCASFLAGS = $(init_rm_flags) $(bios_casflags) 

librt_pm_a_SOURCES = $(all_sources)
librt_pm_a_CFLAGS = $(rt_pm_flags) $(bios_clfags) 
librt_pm_a_CCASFLAGS =  $(rt_pm_flags) $(bios_casflags) 

librt_rm_a_SOURCES = $(all_sources)
librt_rm_a_CFLAGS = $(rt_rm_flags) $(bios_clfags) 
librt_rm_a_CCASFLAGS =  $(rt_rm_flags) $(bios_casflags) 

bios_elf1_SOURCES = 
bios_elf1_CFLAGS = $(bios_cflags)
bios_elf1_CCASFLAGS = $(bios_casflags)
bios_elf1_LDFLAGS = -Xlinker --whole-archive  \
	-T ${srcdir}/$(LINK_SCRIPT:.in=) -static -nostdlib \
	-Xlinker -Map -Xlinker $(MAPFILE) -Xlinker --cref
bios_elf1_DEPENDENCIES = ${srcdir}/$(LINK_SCRIPT:.in=) \
	libinit_rm.a \
	librt_rm.a librt_pm.a \
	$(libfaucc)

bios_elf1_LDADD = \
	libinit_rm.a \
	librt_rm.a librt_pm.a \
	$(libfaucc)



$(LINK_SCRIPT:.in=): $(LINK_SCRIPT) $(LDSCRIPT_PATCHER) \
		libinit_rm.a \
		librt_rm.a librt_pm.a \
		$(libfaucc)


##	Preprocess ld-script	
	cpp -I../bios -P $<  > $(<:.in=.patched) 
## 	Patch ld-script
	$(LDSCRIPT_PATCHER) $(<:.in=.patched) $(<:.in=) \
		libinit_rm.a \
		librt_rm.a librt_pm.a \
		$(libfaucc)

	rm $(<:.in=.patched)

check-local:
	if grep -q 'switch\W*(.*)' *.c; then exit 1; fi
	if test -z "`$(OBJDUMP) -h bios.elf | grep '\.bss[[:blank:]]\+0\+[[:blank:]]\+'`"; then  \
		echo -e 'BIOS contains bss data\n'; exit 1; fi

bios.elf: bios.elf1$(EXEEXT)
##	set section flags
##	$(OBJCOPY) --set-section-flags .text.reset=contents,alloc,load,readonly,code $< $@
	cp $< $@

bios.dis16 bios.dis32: bios.elf
if HAVE_OBJDUMP
	$(OBJDUMP) -D -r --disassembler-options=att,i8086 $< > bios.dis16
	$(OBJDUMP) -D -r --disassembler-options=att       $< > bios.dis32
endif

mb_ibm_at_bios.rom: bios.elf
	$(OBJCOPY) -O binary $< bios.text
	$(bin2bios) bios.text > $@
	rm bios.text

mb_ibm_at_bios.rom-0 mb_ibm_at_bios.rom-1 mb_ibm_at_bios.rom-2 mb_ibm_at_bios.rom-3: mb_ibm_at_bios.rom
	$(splitbios) 1 2 32768 mb_ibm_at_bios.rom

logo.h: $(xpm2logo) ../../../lib/logo.epa
	$(xpm2logo) < ../../../lib/logo.epa > $@

debug:
	echo $(all_modules);

if HAVE_IASL
faum-dsdt.h: ../bios/faum-dsdt.asl
	$(IASL) -p faum-dsdt -on -tc $<
	$(RM) faum-dsdt.aml
	mv faum-dsdt.hex $@
else
faum-dsdt.h: ../bios/faum-dsdt.h.shipped
	cp $< $@
endif

# arg, automake does not generate dependencies for .S files yet :(

entry_deps = ../bios/entry.S ../bios/libsys.h ../bios/build_config.h
head_deps = ../bios/head.S ../bios/libsys.h ../bios/build_config.h
post_deps = ../bios/post.S ../bios/libsys.h ../bios/build_config.h
reset_deps = ../bios/reset.S ../bios/libsys.h ../bios/build_config.h

libinit_rm_a-entry.$(OBJEXT): $(entry_deps)
libinit_rm_a-head.$(OBJEXT): $(head_deps)
libinit_rm_a-post.$(OBJEXT): $(post_deps)
libinit_rm_a-reset.$(OBJEXT): $(reset_deps) 

librt_pm_a-entry.$(OBJEXT): $(entry_deps)
librt_pm_a-head.$(OBJEXT): $(head_deps)
librt_pm_a-post.$(OBJEXT): $(post_deps)
librt_pm_a-reset.$(OBJEXT): $(reset_deps) 

librt_rm_a-entry.$(OBJEXT): $(entry_deps)
librt_rm_a-head.$(OBJEXT): $(head_deps)
librt_rm_a-post.$(OBJEXT): $(post_deps)
librt_rm_a-reset.$(OBJEXT): $(reset_deps) 

endif