# $NetBSD: Makefile.bootprogs,v 1.9 1999/04/02 07:55:06 ross Exp $

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

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

MKMAN=	no
STRIPFLAG=
BINMODE= 444

STRIP?=	strip

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

.PHONY: machine-links
beforedepend: machine-links
# ${MACHINE} then ${MACHINE_ARCH}
machine-links:
	-rm -f machine && \
	    ln -s $S/arch/alpha/include machine
	-rm -f alpha && \
	    ln -s $S/arch/alpha/include alpha
CLEANFILES+=machine alpha

all: machine-links ${PROG}

AFLAGS += -DASSEMBLER
#CPPFLAGS+= -nostdinc -I${.OBJDIR}
CPPFLAGS+= -I${.OBJDIR}
CPPFLAGS += -D_STANDALONE -I${.CURDIR}/../.. -I${S}
CFLAGS = ${CWARNFLAGS} -Os -mno-fp-regs -g

# 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 higest 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})

FILE_FORMAT_CPPFLAGS=	-DALPHA_BOOT_ECOFF -DALPHA_BOOT_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}

.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
.include "${S}/lib/libsa/Makefile.inc"
LIBSA=		${SALIB}