1# $FreeBSD$ 2 3HAVE_ZFS= ${MK_LOADER_ZFS} 4 5LOADER_NET_SUPPORT?= yes 6LOADER_NFS_SUPPORT?= yes 7LOADER_TFTP_SUPPORT?= yes 8LOADER_CD9660_SUPPORT?= yes 9LOADER_EXT2FS_SUPPORT?= yes 10LOADER_MSDOS_SUPPORT?= yes 11LOADER_UFS_SUPPORT?= yes 12LOADER_GZIP_SUPPORT?= yes 13LOADER_BZIP2_SUPPORT?= yes 14 15.include <bsd.init.mk> 16 17LOADER?= loader_${LOADER_INTERP} 18PROG= ${LOADER}.sym 19INTERNALPROG= 20NEWVERSWHAT?= "bootstrap loader" x86 21VERSION_FILE= ${.CURDIR}/../loader/version 22# 23# There's 640k - 40k maximum space, less however much memory the BIOS uses. A 24# non-random survey suggests that 20k-25k is a good value for 'most' machines. 25# We also need to subtract maximum stack usage (20-25k). 26# 27# So 640k - 40k - 25k - 25k = 550k = 563,200 bytes, but use 550,000 below for 28# some extra buffer for more complex setups and/or wider BIOS lomem variation. 29# 30# Some systems use more stack or have BIOS reserve more RAM (or both), and will 31# need to set this lower in /etc/src.conf if the above buffer is too small. 32# 33# sudo dd if=/dev/mem bs=1 iseek=0x413 count=2 | hd -d 34# 35# will tell you how many kiB of lomem are available. 36# 37LOADERSIZE?= 550000 # Largest known safe size for loader.bin 38 39.PATH: ${BOOTSRC}/i386/loader 40 41# architecture-specific loader code 42SRCS= main.c conf.c vers.c chain.c gfx_fb.c 8x16.c 43 44CFLAGS.gfx_fb.c += -I${.CURDIR}/../libi386 45CFLAGS.gfx_fb.c += -I$(SRCTOP)/sys/teken 46CFLAGS.gfx_fb.c += -I${SRCTOP}/sys/cddl/contrib/opensolaris/common/lz4 47CFLAGS.gfx_fb.c += -I${SRCTOP}/contrib/pnglite 48CFLAGS.gfx_fb.c += -DHAVE_MEMCPY -I${SRCTOP}/sys/contrib/zlib 49 50# Include bcache code. 51HAVE_BCACHE= yes 52 53# Enable PnP and ISA-PnP code. 54HAVE_PNP= yes 55HAVE_ISABUS= yes 56 57.if ${MK_LOADER_ZFS} == "yes" 58CFLAGS.main.c+= -I${SYSDIR}/contrib/openzfs/include 59CFLAGS.main.c+= -I${SYSDIR}/contrib/openzfs/include/os/freebsd/zfs 60.endif 61 62.if exists(${.CURDIR}/help.i386) 63HELP_FILES= ${.CURDIR}/help.i386 64.endif 65HELP_FILENAME= loader.help.bios 66 67# Always add MI sources 68.include "${BOOTSRC}/loader.mk" 69 70CLEANFILES+= ${LOADER} ${LOADER}.bin 8x16.c 71 72ORG= 0x0 73 74CFLAGS+= -Wall 75LDFLAGS+= -static ${LDFLAGS_ORG} -Wl,--gc-sections 76.if ${LINKER_TYPE} == "lld" && ${LINKER_VERSION} >= 130000 77# lld 13 and higher default to garbage collecting start/stop symbols, 78# completely ruining our linker sets. For now, work around it by 79# disabling this un-feature. 80LDFLAGS+= -Wl,-z,nostart-stop-gc 81.endif 82 83# i386 standalone support library 84LIBI386= ${BOOTOBJ}/i386/libi386/libi386.a 85CFLAGS+= -I${BOOTSRC}/i386 86 87# Debug me! 88#CFLAGS+= -g 89#LDFLAGS+= -g 90 918x16.c: ${SRCTOP}/contrib/terminus/ter-u16b.bdf 92 vtfontcvt -f compressed-source -o ${.TARGET} ${.ALLSRC} 93 94 95${LOADER}: ${LOADER}.bin ${BTXLDR} ${BTXKERN} 96 btxld -v -f aout -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \ 97 -b ${BTXKERN} ${LOADER}.bin 98 99${LOADER}.bin: ${LOADER}.sym 100 ${STRIPBIN} -R .comment -R .note -o ${.TARGET} ${.ALLSRC} 101 @set -- `ls -l ${.TARGET}` ; x=$$((${LOADERSIZE}-$$5)); \ 102 echo "$$x bytes available"; test $$x -ge 0 103 104.if ${MK_LOADER_ZFS} == "yes" && ${LOADER_INTERP} == ${LOADER_DEFAULT_INTERP} 105LINKS+= ${BINDIR}/${LOADER} ${BINDIR}/zfsloader 106.endif 107.if ${LOADER_INTERP} == ${LOADER_DEFAULT_INTERP} 108LINKS+= ${BINDIR}/${LOADER} ${BINDIR}/loader 109.endif 110FILES+= ${LOADER} 111FILESMODE_${LOADER}= ${BINMODE} -b 112 113# Note: crt0.o needs to be first for pxeboot(8) to work. It assumes that the 114# startup code is located at the start of the loader and will jump 115# there. Although btx is more flexible than this, the emulated boot2 environment 116# that pxeldr provides has none of that flexibility assumes an entry point of 117# 0. In addition, pxeldr and cdboot assume that it is loading an a.out file. 118# 119# We must add it to the LDFLAGS instead of the OBJS because the former won't try 120# to clean it. When it is in OBJS, this cleaning can lead to races where 121# btxcrt.o is rebuilt, but boot2 isn't, leading to errors at installation time. 122# LDFLAGS does not have this baggage and will be included first in the list of 123# files. 124LDFLAGS+= ${BTXCRT} 125 126DPADD= ${LDR_INTERP32} ${LIBI386} ${LIBSA32} 127LDADD= ${LDR_INTERP32} ${LIBI386} ${LIBSA32} 128 129.if ${MACHINE_CPUARCH} == "amd64" 130CFLAGS+= -DLOADER_PREFER_AMD64 131.endif 132 133.include <bsd.prog.mk> 134