xref: /netbsd-src/sys/arch/i386/stand/boot/Makefile.boot (revision f937c412f371bc14cc109a4768482c4850abc7a5) 
1# $NetBSD: Makefile.boot,v 1.76 2023/06/03 08:52:56 lukem Exp $
2
3S=	${.CURDIR}/../../../../..
4
5NOMAN=
6NOLIBCSANITIZER=
7NOSANITIZER=
8NOPIE=
9PROG?= boot
10NEWVERSWHAT?= "BIOS Boot"
11
12AFLAGS.biosboot.S= ${${ACTIVE_CC} == "clang":?-no-integrated-as:}
13
14SOURCES?= biosboot.S boot2.c conf.c devopen.c exec.c \
15	  exec_multiboot1.c exec_multiboot2.c
16SRCS= ${SOURCES}
17
18.include <bsd.init.mk>
19
20STRIPFLAG=	# nothing
21
22LIBCRT0=	# nothing
23LIBCRTI=	# nothing
24LIBCRTBEGIN=	# nothing
25LIBCRTEND=	# nothing
26LIBC=		# nothing
27
28BINDIR=/usr/mdec
29BINMODE=444
30
31.PATH:	${.CURDIR}/.. ${.CURDIR}/../../lib
32
33LDFLAGS+= -nostdlib -Wl,-N -Wl,-e,boot_start
34CPPFLAGS+= -I ${.CURDIR}/..  -I ${.CURDIR}/../../lib -I ${S}/lib/libsa
35CPPFLAGS+= -I ${.OBJDIR}
36# Make sure we override any optimization options specified by the user
37COPTS=  -Os
38
39.if ${MACHINE_ARCH} == "x86_64"
40LDFLAGS+=  -Wl,-m,elf_i386
41AFLAGS+=   -m32
42CPUFLAGS=  -m32
43LIBKERN_ARCH=i386
44KERNMISCMAKEFLAGS="LIBKERN_ARCH=i386"
45.else
46CPUFLAGS=  -march=i386 -mtune=i386
47.endif
48
49CFLAGS+=   -mno-sse -mno-sse2 -mno-sse3
50
51COPTS+=    -ffreestanding
52CFLAGS+= -Wall -Wmissing-prototypes -Wstrict-prototypes
53CPPFLAGS+= -nostdinc -D_STANDALONE
54CPPFLAGS+= -I$S
55
56.if ${KERNEL_DIR:Uno} == "yes"
57CPPFLAGS+= -DKERNEL_DIR
58.endif
59
60CPPFLAGS+= -DSUPPORT_PS2
61CPPFLAGS+= -DDIRECT_SERIAL
62CPPFLAGS+= -DSUPPORT_SERIAL=boot_params.bp_consdev
63
64CPPFLAGS+= -DCONSPEED=boot_params.bp_conspeed
65CPPFLAGS+= -DCONSADDR=boot_params.bp_consaddr
66CPPFLAGS+= -DCONSOLE_KEYMAP=boot_params.bp_keymap
67
68CPPFLAGS+= -DSUPPORT_CD9660
69CPPFLAGS+= -DSUPPORT_USTARFS
70CPPFLAGS+= -DSUPPORT_DOSFS
71CPPFLAGS+= -DSUPPORT_EXT2FS
72#CPPFLAGS+= -DSUPPORT_MINIXFS3
73CPPFLAGS+= -DPASS_BIOSGEOM
74CPPFLAGS+= -DPASS_MEMMAP
75#CPPFLAGS+= -DBOOTPASSWD
76CPPFLAGS+= -DEPIA_HACK
77#CPPFLAGS+= -DDEBUG_MEMSIZE
78#CPPFLAGS+= -DBOOT_MSG_COM0
79CPPFLAGS+= -DLIBSA_ENABLE_LS_OP
80
81# The biosboot code is linked to 'virtual' address of zero and is
82# loaded at physical address 0x10000.
83# XXX The heap values should be determined from _end.
84SAMISCCPPFLAGS+= -DHEAP_START=0x40000 -DHEAP_LIMIT=0x70000
85SAMISCCPPFLAGS+= -DLIBSA_PRINTF_LONGLONG_SUPPORT
86SAMISCMAKEFLAGS+= SA_USE_CREAD=yes	# Read compressed kernels
87SAMISCMAKEFLAGS+= SA_INCLUDE_NET=no	# Netboot via TFTP, NFS
88
89CPPFLAGS+=	-Wno-pointer-sign
90
91# CPPFLAGS+= -DBOOTXX_RAID1_SUPPORT
92
93I386_STAND_DIR?= $S/arch/i386/stand
94
95### find out what to use for libi386
96I386DIR= ${I386_STAND_DIR}/lib
97.include "${I386DIR}/Makefile.inc"
98LIBI386= ${I386LIB}
99
100### find out what to use for libsa
101SA_AS= library
102SAMISCMAKEFLAGS+="SA_USE_LOADFILE=yes"
103SAMISCMAKEFLAGS+="SA_ENABLE_LS_OP=yes"
104.include "${S}/lib/libsa/Makefile.inc"
105LIBSA= ${SALIB}
106
107### find out what to use for libkern
108KERN_AS= library
109.include "${S}/lib/libkern/Makefile.inc"
110LIBKERN= ${KERNLIB}
111
112### find out what to use for libz
113Z_AS= library
114.include "${S}/lib/libz/Makefile.inc"
115LIBZ= ${ZLIB}
116
117LDSCRIPT ?= $S/arch/i386/conf/stand.ldscript
118
119cleandir distclean: .WAIT cleanlibdir
120
121cleanlibdir:
122	-rm -rf lib
123
124LIBLIST= ${LIBI386} ${LIBSA} ${LIBZ} ${LIBKERN} ${LIBI386} ${LIBSA}
125# LIBLIST= ${LIBSA} ${LIBKERN} ${LIBI386} ${LIBSA} ${LIBZ} ${LIBKERN}
126
127CLEANFILES+= ${PROG}.tmp ${PROG}.map ${PROG}.sym
128
129VERSIONMACHINE=x86
130.include "${S}/conf/newvers_stand.mk"
131
132# Anything that calls 'real_to_prot' must have a %pc < 0x10000.
133# We link the program, find the callers (all in libi386), then
134# explicitly pull in the required objects before any other library code.
135${PROG}: ${OBJS} ${LIBLIST} ${LDSCRIPT} ${.CURDIR}/../Makefile.boot
136	${_MKTARGET_LINK}
137	bb="$$( ${CC} -o ${PROG}.sym ${LDFLAGS} -Wl,-Ttext,0 -Wl,-cref \
138	    ${OBJS} ${LIBLIST} | ( \
139		while read symbol file; do \
140			[ -z "$$file" ] && continue; \
141			[ "$$symbol" = real_to_prot ] && break; \
142		done; \
143		while \
144			oifs="$$IFS"; \
145			IFS='()'; \
146			set -- $$file; \
147			IFS="$$oifs"; \
148			[ -n "$$2" ] && echo "${I386DST}/$$2"; \
149			read file rest && [ -z "$$rest" ]; \
150		do :; \
151		done; \
152	) )"; \
153	${CC} -o ${PROG}.sym ${LDFLAGS} -Wl,-Ttext,0 -T ${LDSCRIPT} \
154		-Wl,-Map,${PROG}.map -Wl,-cref ${OBJS} $$bb ${LIBLIST}
155	${OBJCOPY} -O binary ${PROG}.sym ${PROG}
156
157CWARNFLAGS.gcc+=	${CC_WNO_ADDRESS_OF_PACKED_MEMBER}
158
159.include <bsd.prog.mk>
160KLINK_MACHINE=	i386
161.include <bsd.klinks.mk>
162