hypervisor/Makefile

   1 #
   2 # Jailhouse, a Linux-based partitioning hypervisor
   3 #
   4 # Copyright (c) Siemens AG, 2013
   5 # Copyright (c) Valentine Sinitsyn, 2014
   6 #
   7 # Authors:
   8 #  Jan Kiszka <jan.kiszka@siemens.com>
   9 #  Valentine Sinitsyn <valentine.sinitsyn@gmail.com>
  10 #
  11 # This work is licensed under the terms of the GNU GPL, version 2.  See
  12 # the COPYING file in the top-level directory.
  13 #
  14
  15 LINUXINCLUDE := -I$(src)/arch/$(SRCARCH)/include -I$(src)/include
  16 KBUILD_CFLAGS := -g -Os -Wall -Wstrict-prototypes -Wtype-limits \
  17                  -Wmissing-declarations -Wmissing-prototypes \
  18                  -fno-strict-aliasing -fno-pic -fno-common \
  19                  -fno-stack-protector -fno-builtin-ffsl
  20
  21 ifeq ($(SRCARCH),x86)
  22 KBUILD_CFLAGS += -mcmodel=kernel
  23 KBUILD_CPPFLAGS += -m64
  24 BUILD_VARIANTS := amd intel
  25 endif
  26
  27 ifneq ($(wildcard $(obj)/include/jailhouse/config.h),)
  28 KBUILD_CFLAGS += -include $(obj)/include/jailhouse/config.h
  29 endif
  30
  31 CORE_OBJECTS = setup.o printk.o paging.o control.o lib.o
  32
  33 define filechk_version
  34         $(src)/../scripts/gen_version_h $(src)/..
  35 endef
  36
  37 clean-files := $(obj)/include/jailhouse/version.h
  38
  39 # This derives from the Linux kernel's asm-offsets.h generation infrastructure
  40
  41 define sed-y
  42         "/^=>/{s:=>#\(.*\):/* \1 */:; \
  43         s:^=>\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
  44         s:^=>\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
  45         s:=>::; p;}"
  46 endef
  47
  48 quiet_cmd_defines = GEN     $@
  49 define cmd_defines
  50         (set -e; \
  51          echo "#ifndef _GENERATED_ASM_DEFINES_H"; \
  52          echo "#define _GENERATED_ASM_DEFINES_H"; \
  53          echo "/*"; \
  54          echo " * This file is autogenerated. If you need to change it,"; \
  55          echo " * edit arch/$(SRCARCH)/asm-defines.c instead."; \
  56          echo " *"; \
  57          echo " * ALL MANUAL CHANGES TO THIS FILE WILL BE LOST!"; \
  58          echo " */"; \
  59          echo ""; \
  60          sed -ne $(sed-y) $<; \
  61          echo ""; \
  62          echo "#endif" ) > $@
  63 endef
  64
  65 defines-file := include/generated/asm-defines.h
  66
  67 targets := $(defines-file)
  68
  69 $(obj)/arch/$(SRCARCH)/asm-defines.s: $(src)/arch/$(SRCARCH)/asm-defines.c
  70         $(call if_changed_dep,cc_s_c)
  71
  72 $(obj)/$(defines-file): $(obj)/arch/$(SRCARCH)/asm-defines.s
  73         $(Q)mkdir -p $(dir $@)
  74         $(call cmd,defines)
  75
  76 $(obj)/include/jailhouse/version.h: $(src)/Makefile FORCE
  77         $(call filechk,version)
  78
  79 $(foreach co,$(CORE_OBJECTS),\
  80         $(eval $(obj)/$(co): $(obj)/$(defines-file)))
  81
  82 $(obj)/setup.o: $(obj)/include/jailhouse/version.h
  83
  84 arch-builtin: $(obj)/$(defines-file) FORCE
  85         $(Q)$(MAKE) $(build)=$(obj)/arch/$(SRCARCH)
  86
  87 always :=
  88
  89 define BUILD_JAILHOUSE_template
  90 always += jailhouse$(1).bin
  91
  92 hypervisor$(1)-y := $$(CORE_OBJECTS) arch/$$(SRCARCH)/built-in$(1).o \
  93         hypervisor.lds
  94 targets += $$(hypervisor$(1)-y)
  95
  96 # Need fake recipe here so make will consider this a volatile target
  97 $$(obj)/arch/$$(SRCARCH)/built-in$(1).o: arch-builtin
  98         @
  99
 100 HYPERVISOR$(1)_OBJS = $$(addprefix $$(obj)/,$$(hypervisor$(1)-y))
 101
 102 LDFLAGS_hypervisor$(1).o := -T
 103
 104 targets += hypervisor$(1).o
 105 $$(obj)/hypervisor$(1).o: $$(src)/hypervisor.lds $$(HYPERVISOR$(1)_OBJS)
 106         $$(call if_changed,ld)
 107
 108 OBJCOPYFLAGS_jailhouse$(1).bin := -O binary -R .eh_frame
 109
 110 targets += jailhouse$(1).bin
 111 $$(obj)/jailhouse$(1).bin: $$(obj)/hypervisor$(1).o
 112         $$(call if_changed,objcopy)
 113 endef
 114
 115 ifneq ($(BUILD_VARIANTS),)
 116 $(foreach variant,$(BUILD_VARIANTS),\
 117         $(eval $(call BUILD_JAILHOUSE_template,-$(variant))))
 118 else
 119 $(eval $(call BUILD_JAILHOUSE_template,))
 120 endif
 121
 122 .PHONY: arch-builtin