# $NetBSD: Makefile.bootprogs,v 1.6 2022/05/28 22:16:43 andvar Exp $

NOSSP=yes
NOPIE=yes

.include <bsd.own.mk>
.include <bsd.klinks.mk>

S=	${.CURDIR}/../../../../..
COMMON=	${.CURDIR}/../common

.PATH:	${COMMON}

.if ${MACHINE_ARCH:M*64*}
.	if ${MACHINE_ARCH:M*eb}
LDABI=	-melf32btsmipn32
.	else
LDABI=	-melf32ltsmipn32
.	endif
CPUFLAGS+=	-mabi=n32
.endif

STRIPFLAG=
BINMODE= 444

# XXX SHOULD NOT NEED TO DEFINE THESE!
LIBCRT0=
LIBCRTI=
LIBC=
LIBCRTBEGIN=
LIBCRTEND=

STRIP?=	strip

CHECKSIZE_CMD=	SIZE=${SIZE} ${HOST_SH} ${COMMON}/checksize.sh

AFLAGS+=	-DASSEMBLER -D_LOCORE -mno-abicalls -mips64 -msoft-float
# -I${.CURDIR}/../.. done by Makefile.inc
CPPFLAGS+=	-nostdinc -I${.OBJDIR} -D_STANDALONE -I${S}
CFLAGS=		-Os -g -ffreestanding -mno-abicalls -msoft-float -G 0
CFLAGS+=	-mips64
CFLAGS+=	-Werror ${CWARNFLAGS}

NETBSD_VERS!=${HOST_SH} ${S}/conf/osrelease.sh
CPPFLAGS+= -DNETBSD_VERS='"${NETBSD_VERS}"'

CWARNFLAGS+=	-Wno-main 
CWARNFLAGS+=	-Wall -Wmissing-prototypes -Wstrict-prototypes -Wpointer-arith
CWARNFLAGS+=	-Wno-pointer-sign

VERSIONFLAGS+=-n
.include "${S}/conf/newvers_stand.mk"

# 
# Refer to CFE documentation for a description of these regions.
# 

REGION1_START=		0x20000000		# "Region 1 start"
REGION1_SIZE!=		expr 256 \* 1024	# 256k

LDSCRIPT=		${COMMON}/boot.ldscript

# our memory lauout:

#	'unified' boot loaders (e.g. netboot) can consume all of region
#	1 for their text+data, or text+data+bss.

UNIFIED_LOAD_ADDRESS=	${REGION1_START}
UNIFIED_MAX_LOAD!=	expr ${REGION1_SIZE}
UNIFIED_MAX_TOTAL!=	expr ${REGION1_SIZE}

#UNIFIED_HEAP_START=	right after secondary bss
UNIFIED_HEAP_LIMIT=	(${REGION1_START} + ${REGION1_SIZE})

#	two-stage boot loaders must share region 1.  The first stage
#	loads into the lowest portion, and uses the highest portion
#	for its heap.  The second stage loads in between the primary image
#	and the heap, and can reuse the memory after it (i.e. the primary's
#	heap) for its own heap.

PRIMARY_LOAD_ADDRESS=	${REGION1_START}
#PRIMARY_MAX_LOAD=	booter dependent, no more than ${PRIMARY_MAX_TOTAL}
PRIMARY_MAX_TOTAL!=	expr 16 \* 1024

# XXX SECONDARY_LOAD_ADDRESS should be
# XXX (${PRIMARY_LOAD_ADDRESS} + ${PRIMARY_MAX_TOTAL}) bt there's no easy
# XXX way to do that calculation and 'ld' wants a single number.
SECONDARY_LOAD_ADDRESS=	0x20004000	# XXX
SECONDARY_MAX_LOAD!=	expr 112 \* 1024
SECONDARY_MAX_TOTAL!=	expr ${REGION1_SIZE} - ${PRIMARY_MAX_TOTAL}

PRIMARY_HEAP_START=	(${SECONDARY_LOAD_ADDRESS} + ${SECONDARY_MAX_LOAD})
PRIMARY_HEAP_LIMIT=	(${REGION1_START} + ${REGION1_SIZE})

#SECONDARY_HEAP_START=	right after secondary bss
SECONDARY_HEAP_LIMIT=	(${REGION1_START} + ${REGION1_SIZE})

#	standalone programs are like kernels.  They load at
#	0xfffffc0000300000 and can use the rest of memory.

STANDPROG_LOAD_ADDRESS=	0xfffffc0000300000


FILE_FORMAT_CPPFLAGS=	-DBOOT_ELF

UNIFIED_CPPFLAGS=	-DUNIFIED_BOOTBLOCK \
			-DHEAP_LIMIT="${UNIFIED_HEAP_LIMIT}" \
			${FILE_FORMAT_CPPFLAGS}

PRIMARY_CPPFLAGS=	-DPRIMARY_BOOTBLOCK \
			-DSECONDARY_LOAD_ADDRESS="${SECONDARY_LOAD_ADDRESS}" \
			-DSECONDARY_MAX_LOAD="${SECONDARY_MAX_LOAD}" \
			-DHEAP_LIMIT="${PRIMARY_HEAP_LIMIT}" \
			-DHEAP_START="${PRIMARY_HEAP_START}"

SECONDARY_CPPFLAGS=	-DSECONDARY_BOOTBLOCK \
			-DHEAP_LIMIT="${SECONDARY_HEAP_LIMIT}" \
			${FILE_FORMAT_CPPFLAGS}

STANDPROG_CPPFLAGS=	-DSTANDALONE_PROGRAM

.include <bsd.prog.mk>

### find out what to use for libkern
KERN_AS=	library
.include "${S}/lib/libkern/Makefile.inc"
LIBKERN=	${KERNLIB}

### find out what to use for libz
Z_AS=		library
.include "${S}/lib/libz/Makefile.inc"
LIBZ=		${ZLIB}

### find out what to use for libsa
SA_AS=		library
SAMISCMAKEFLAGS+="SA_USE_LOADFILE=yes"
.include "${S}/lib/libsa/Makefile.inc"
LIBSA=		${SALIB}

/usr/lib/crt0.o:
	true

/usr/lib/crtbegin.o:
	true

/usr/lib/crtend.o:
	true

cleandir: .WAIT cleandirlocal
cleandirlocal:
	-rm -rf lib