cc787e3d0e
root disk. The embedded image is linked into the kernel in the .mfs section. Add rules and variables to kern.pre.mk and kern.post.mk that handle the linking of the image. First objcopy is used to generate an object file. Then, the object file is linked into the kernel. Submitted by: Steve Kiernan <stevek@juniper.net> Reviewed by: brooks@ Obtained from: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D2903
149 lines
4.8 KiB
Makefile
149 lines
4.8 KiB
Makefile
# Makefile.arm -- with config changes.
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# Copyright 1990 W. Jolitz
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# from: @(#)Makefile.i386 7.1 5/10/91
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# $FreeBSD$
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#
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# Makefile for FreeBSD
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#
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# This makefile is constructed from a machine description:
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# config machineid
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# Most changes should be made in the machine description
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# /sys/arm/conf/``machineid''
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# after which you should do
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# config machineid
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# Generic makefile changes should be made in
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# /sys/conf/Makefile.arm
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# after which config should be rerun for all machines.
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#
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# Which version of config(8) is required.
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%VERSREQ= 600013
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STD8X16FONT?= iso
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.if !defined(S)
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.if exists(./@/.)
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S= ./@
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.else
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S= ../../..
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.endif
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.endif
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.include "$S/conf/kern.pre.mk"
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INCLUDES+= -I$S/contrib/libfdt -I$S/gnu/dts/include
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SYSTEM_LD:= ${SYSTEM_LD:$S/conf/ldscript.$M=ldscript.$M}
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SYSTEM_DEP:= ${SYSTEM_DEP:$S/conf/ldscript.$M=ldscript.$M}
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.if !defined(DEBUG) && !defined(PROFLEVEL)
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STRIP_FLAGS = -S
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.endif
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# We don't support gcc's thump interwork stuff, so disable it
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CFLAGS.gcc += -mno-thumb-interwork
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# We generally don't want fpu instructions in the kernel.
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CFLAGS.clang += -mfpu=none
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.if !empty(DDB_ENABLED)
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CFLAGS += -funwind-tables
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.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 30500
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# clang < 3.5.0 requires us to tell it to emit assembly with unwind information
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CFLAGS += -mllvm -arm-enable-ehabi
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.endif
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.endif
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# hack because genassym.c includes sys/bus.h which includes these.
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genassym.o: bus_if.h device_if.h
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SYSTEM_LD_ = ${LD} -Bdynamic -T ldscript.$M.noheader ${_LDFLAGS} \
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-warn-common -export-dynamic -dynamic-linker /red/herring -o \
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${FULLKERNEL}.noheader -X ${SYSTEM_OBJS} vers.o
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SYSTEM_LD_TAIL +=;sed s/" + SIZEOF_HEADERS"// ldscript.$M\
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>ldscript.$M.noheader; \
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${SYSTEM_LD_}; \
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${OBJCOPY} -S -O binary ${FULLKERNEL}.noheader \
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${KERNEL_KO}.bin; \
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rm ${FULLKERNEL}.noheader
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FILES_CPU_FUNC = \
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$S/$M/$M/cpufunc_asm_arm9.S \
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$S/$M/$M/cpufunc_asm_arm10.S \
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$S/$M/$M/cpufunc_asm_xscale.S $S/$M/$M/cpufunc_asm.S \
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$S/$M/$M/cpufunc_asm_xscale_c3.S $S/$M/$M/cpufunc_asm_armv5_ec.S \
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$S/$M/$M/cpufunc_asm_fa526.S $S/$M/$M/cpufunc_asm_sheeva.S \
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$S/$M/$M/cpufunc_asm_pj4b.S $S/$M/$M/cpufunc_asm_armv6.S \
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$S/$M/$M/cpufunc_asm_armv7.S
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.if defined(KERNPHYSADDR)
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KERNEL_EXTRA=trampoline
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KERNEL_EXTRA_INSTALL=kernel.gz.tramp
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trampoline: ${KERNEL_KO}.tramp
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${KERNEL_KO}.tramp: ${KERNEL_KO} $S/$M/$M/inckern.S $S/$M/$M/elf_trampoline.c
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echo "#define KERNNAME \"${KERNEL_KO}.tmp\"" >opt_kernname.h
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sed s/${KERNVIRTADDR}/${KERNPHYSADDR}/ ldscript.$M > ldscript.$M.tramp
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sed s/" + SIZEOF_HEADERS"// ldscript.$M.tramp > \
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ldscript.$M.tramp.noheader
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echo "#include <machine/asm.h>" >tmphack.S
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echo "ENTRY(_start)" >>tmphack.S
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echo "bl _startC" >>tmphack.S
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${OBJCOPY} --strip-symbol '$$d' --strip-symbol '$$a' \
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-g --strip-symbol '$$t' ${FULLKERNEL} ${KERNEL_KO}.tmp
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eval $$(stat -s ${KERNEL_KO}.tmp) && \
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echo "#define KERNSIZE $$st_size" >>opt_kernname.h
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${CC} -O -nostdlib -I. -I$S -Xlinker -T -Xlinker ldscript.$M.tramp \
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tmphack.S $S/$M/$M/elf_trampoline.c $S/$M/$M/inckern.S \
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${FILES_CPU_FUNC} -o ${KERNEL_KO}.tramp
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${CC} -O -nostdlib -I. -I$S -Xlinker -T -Xlinker \
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ldscript.$M.tramp.noheader \
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tmphack.S $S/$M/$M/elf_trampoline.c $S/$M/$M/inckern.S \
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${FILES_CPU_FUNC} -o ${KERNEL_KO}.tramp.noheader
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${OBJCOPY} -S -O binary ${KERNEL_KO}.tramp.noheader \
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${KERNEL_KO}.tramp.bin
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${OBJCOPY} ${STRIP_FLAGS} ${KERNEL_KO}.tmp
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echo "#define KERNNAME \"${KERNEL_KO}.tmp.gz\"" >opt_kernname.h
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eval $$(stat -s ${KERNEL_KO}.tmp) && \
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echo "#define KERNSIZE $$st_size" >>opt_kernname.h
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gzip -f9 ${KERNEL_KO}.tmp
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eval $$(stat -s ${KERNEL_KO}.tmp.gz) && \
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echo "#define KERNCOMPSIZE $$st_size" >>opt_kernname.h
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${CC} -O2 -ffreestanding -DKZIP -I. -I$S -c $S/kern/inflate.c -o \
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inflate-tramp.o
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${CC} -O -nostdlib -I. -I$S -Xlinker -T -Xlinker ldscript.$M.tramp \
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-DKZIP tmphack.S $S/$M/$M/elf_trampoline.c inflate-tramp.o \
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$S/$M/$M/inckern.S ${FILES_CPU_FUNC} -o ${KERNEL_KO}.gz.tramp
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${CC} -O -nostdlib -I. -I$S -Xlinker -T -Xlinker \
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ldscript.$M.tramp.noheader \
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-DKZIP tmphack.S $S/$M/$M/elf_trampoline.c inflate-tramp.o \
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$S/$M/$M/inckern.S ${FILES_CPU_FUNC} -o ${KERNEL_KO}.tramp.noheader
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${OBJCOPY} -S -O binary ${KERNEL_KO}.tramp.noheader \
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${KERNEL_KO}.gz.tramp.bin
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rm ${KERNEL_KO}.tmp.gz ${KERNEL_KO}.tramp.noheader opt_kernname.h \
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inflate-tramp.o tmphack.S
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.endif
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%BEFORE_DEPEND
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%OBJS
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%FILES.c
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%FILES.s
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%FILES.m
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%CLEAN
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CLEAN+= ldscript.$M ${KERNEL_KO}.bin ldscript.$M.noheader
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CLEAN+= ${KERNEL_KO}.tramp ${KERNEL_KO}.tramp.bin ldscript.$M.tramp \
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ldscript.$M.tramp.noheader ${KERNEL_KO}.gz.tramp \
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${KERNEL_KO}.gz.tramp.bin
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ldscript.$M: $S/conf/ldscript.$M
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cat $S/conf/ldscript.$M|sed s/KERNPHYSADDR/${KERNPHYSADDR}/g| \
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sed s/KERNVIRTADDR/${KERNVIRTADDR}/g > ldscript.$M
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%RULES
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.include "$S/conf/kern.post.mk"
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