# $NetBSD: Makefile.bootprogs,v 1.37 2022/05/28 22:16:43 andvar Exp $

NOMAN=			# defined

.include <bsd.own.mk>

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

.PATH:	${.CURDIR}/../common

BINMODE= 444

STRIP?=	strip

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

CHECKSIZE_CMD=	SIZE=${SIZE} ${HOST_SH} ${.CURDIR}/../common/checksize.sh

realall: ${PROG}

AFLAGS+=	-DASSEMBLER
# -I${.CURDIR}/../.. done by Makefile.inc
CPPFLAGS+=	-nostdinc -I${.OBJDIR} -D_STANDALONE -I${S}
CFLAGS=		-ffreestanding -mno-fp-regs -g

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

CWARNFLAGS+=	-Wall -Wmissing-prototypes -Wstrict-prototypes -Wpointer-arith
CFLAGS+=	-Werror ${CWARNFLAGS}

.include "${S}/conf/newvers_stand.mk"


# For descriptions of regions available to bootstrap programs, see
# section 3.4.1.2 (pp. III 3-14 - III 3-18) of the second edition of
# the Alpha AXP Architecture Reference Manual.

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

# 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
#	0xfffffc0000800000 and can use the rest of memory.

STANDPROG_LOAD_ADDRESS=	0xfffffc0000800000


FILE_FORMAT_CPPFLAGS=	-DBOOT_ECOFF -DBOOT_ELF64

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>
.include <bsd.klinks.mk>

STRIPFLAG=	# override values in ${MAKECONF}
COPTS+=-Os	# override -O supplied by user

### 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}