1# Makefile.arm -- with config changes. 2# Copyright 1990 W. Jolitz 3# from: @(#)Makefile.i386 7.1 5/10/91 4# $FreeBSD$ 5# 6# Makefile for FreeBSD 7# 8# This makefile is constructed from a machine description: 9# config machineid 10# Most changes should be made in the machine description 11# /sys/arm/conf/``machineid'' 12# after which you should do 13# config machineid 14# Generic makefile changes should be made in 15# /sys/conf/Makefile.arm 16# after which config should be rerun for all machines. 17# 18 19# Which version of config(8) is required. 20%VERSREQ= 600013 21 22STD8X16FONT?= iso 23 24.if !defined(S) 25.if exists(./@/.) 26S= ./@ 27.else 28S= ../../.. 29.endif 30.endif 31.include "$S/conf/kern.pre.mk" 32 33INCLUDES+= -I$S/contrib/libfdt -I$S/gnu/dts/include 34 35.if !defined(DEBUG) && !defined(PROFLEVEL) 36STRIP_FLAGS = -S 37.endif 38 39# We don't support gcc's thump interwork stuff, so disable it 40CFLAGS.gcc += -mno-thumb-interwork 41 42# We generally don't want fpu instructions in the kernel. 43CFLAGS.clang += -mfpu=none 44 45.if !empty(DDB_ENABLED) 46CFLAGS += -funwind-tables 47.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 30500 48# clang < 3.5.0 requires us to tell it to emit assembly with unwind information 49CFLAGS += -mllvm -arm-enable-ehabi 50.endif 51.endif 52 53# "makeoptions KERNVIRTADDR=" is now optional, supply the default value. 54.if empty(KERNVIRTADDR) 55KERNVIRTADDR= 0xc0000000 56.endif 57 58# Use a custom SYSTEM_LD command to generate the elf kernel, so we can 59# set the text segment start address, and also strip the "arm mapping 60# symbols" which have names like $a.0 and $d.2; see the document 61# "ELF for the ARM architecture" for more info on the mapping symbols. 62SYSTEM_LD= \ 63 ${SYSTEM_LD_BASECMD} \ 64 --defsym='text_start=kernbase + SIZEOF_HEADERS' \ 65 -o ${.TARGET} ${SYSTEM_OBJS} vers.o; \ 66 $(OBJCOPY) \ 67 --wildcard \ 68 --strip-symbol='$$[adt]*' \ 69 ${.TARGET} 70 71# Generate the .bin (no elf headers) kernel as an extra build output. 72# We must relink to generate the .bin kernel, because without headers the 73# location of everything changes. We also strip the ARM marker symbols. 74KERNEL_EXTRA+= ${KERNEL_KO}.bin 75KERNEL_EXTRA_INSTALL+= ${KERNEL_KO}.bin 76 77${KERNEL_KO}.bin: ${SYSTEM_DEP} vers.o 78 @echo "linking ${.TARGET}" 79 @${SYSTEM_LD_BASECMD} \ 80 --defsym='text_start=kernbase' \ 81 -o ${.TARGET} ${SYSTEM_OBJS} vers.o 82 ${SIZE} ${.TARGET} 83 @${OBJCOPY} \ 84 --wildcard \ 85 --strip-symbol='$$[adt]*' \ 86 --output-target=binary \ 87 ${.TARGET} 88 @chmod 755 ${.TARGET} 89 90# hack because genassym.c includes sys/bus.h which includes these. 91genassym.o: bus_if.h device_if.h 92 93%BEFORE_DEPEND 94 95%OBJS 96 97%FILES.c 98 99%FILES.s 100 101%FILES.m 102 103%CLEAN 104 105CLEAN+= ${KERNEL_KO}.bin 106 107%RULES 108 109.include "$S/conf/kern.post.mk" 110